Exercise 1

2024-04-30 00:53:02 +02:00
parent abb1a148ff
commit 0a6792b765
54 changed files with 16 additions and 0 deletions
--- a/Records.csv
+++ b/Records.csv
--- a/ex1/README.md
+++ b/ex1/README.md
@@ -0,0 +1,19 @@
+# README
+
+## About
+
+This is the official Wails Vanilla template.
+
+You can configure the project by editing `wails.json`. More information about the project settings can be found
+here: https://wails.io/docs/reference/project-config
+
+## Live Development
+
+To run in live development mode, run `wails dev` in the project directory. This will run a Vite development
+server that will provide very fast hot reload of your frontend changes. If you want to develop in a browser
+and have access to your Go methods, there is also a dev server that runs on http://localhost:34115. Connect
+to this in your browser, and you can call your Go code from devtools.
+
+## Building
+
+To build a redistributable, production mode package, use `wails build`.
--- a/ex1/Records.proto
+++ b/ex1/Records.proto
@@ -0,0 +1,113 @@
+syntax = "proto3";
+
+option go_package = "proto/";
+
+enum Gender {
+    MALE = 0;
+    FEMALE = 1;
+}
+
+enum Quarter {
+    Q1 = 0;
+    Q2 = 1;
+    Q3 = 2;
+    Q4 = 3;
+}
+
+enum Half {
+    FIRST_HALF = 0;
+    SECOND_HALF = 1;
+}
+
+enum Month {
+    JANUARY = 0;
+    FEBRUARY = 1;
+    MARCH = 2;
+    APRIL = 3;
+    MAY = 4;
+    JUNE = 5;
+    JULY = 6;
+    AUGUST = 7;
+    SEPTEMBER = 8;
+    OCTOBER = 9;
+    NOVEMBER = 10;
+    DECEMBER = 11;
+}
+
+enum MonthShort {
+    JAN = 0;
+    FEB = 1;
+    MAR = 2;
+    APR = 3;
+    MAY_SHORT = 4;
+    JUN = 5;
+    JUL = 6;
+    AUG = 7;
+    SEP = 8;
+    OCT = 9;
+    NOV = 10;
+    DEC = 11;
+}
+
+enum WeekDay {
+    SUNDAY = 0;
+    MONDAY = 1;
+    TUESDAY = 2;
+    WEDNESDAY = 3;
+    THURSDAY = 4;
+    FRIDAY = 5;
+    SATURDAY = 6;
+}
+
+enum WeekDayShort {
+    SUN = 0;
+    MON = 1;
+    TUE = 2;
+    WED = 3;
+    THU = 4;
+    FRI = 5;
+    SAT = 6;
+}
+
+message Employee {
+    uint32 emp_id = 1;
+    string name_prefix = 2;
+    string first_name = 3;
+    string middle_initial = 4;
+    string last_name = 5;
+    Gender gender = 6;
+    string email = 7;
+    string fathers_name = 8;
+    string mothers_name = 9;
+    string mothers_maiden_name = 10;
+    string birthdate = 11;
+    string birth_time = 12;
+    uint32 weight_kg = 13;
+    string joining_date = 14;
+    Quarter joining_quarter = 15;
+    Half joining_half = 16;
+    uint32 joining_year = 17;
+    uint32 joining_month = 18;
+    Month joining_month_name = 19;
+    MonthShort joining_month_name_short = 20;
+    uint32 joining_month_day = 21;
+    WeekDay joining_week_day = 22;
+    WeekDayShort joining_week_day_short = 23;
+    float years_of_service = 24;
+    uint32 salary = 25;
+    string latest_hike_percentage = 26;
+    string ssn = 27;
+    string phone_number = 28;
+    string place_name = 29;
+    string county = 30;
+    string city = 31;
+    string state = 32;
+    uint32 zip = 33;
+    string region = 34;
+    string username = 35;
+    string password = 36;
+}
+
+message EmployeeList {
+    repeated Employee employees = 1;
+}
--- a/ex1/app.go
+++ b/ex1/app.go
@@ -0,0 +1,90 @@
+package main
+
+import (
+	"context"
+
+	"git.cems.dev/cdricms/bdooc/proto"
+	"github.com/wailsapp/wails/v2/pkg/runtime"
+)
+
+// App struct
+type App struct {
+	ctx       context.Context
+	employees *proto.EmployeeList // Caching purposes
+}
+
+// NewApp creates a new App application struct
+func NewApp() *App {
+	return &App{}
+}
+
+// startup is called when the app starts. The context is saved
+// so we can call the runtime methods
+func (a *App) startup(ctx context.Context) {
+	a.ctx = ctx
+}
+
+func (a *App) GetEmployees(path string, limit, page uint, column, query *string) ([]*proto.Employee, error) {
+	if a.employees == nil {
+		e, err := proto.LoadFromFile(path)
+		if err != nil {
+			return nil, err
+		}
+		a.employees = e
+	}
+
+	if column != nil && query != nil {
+		e, err := a.employees.QueryEmployeesByColumn(proto.EmployeeField(proto.SnakeCaseToPascalCase(*column)), *query)
+		if err != nil {
+			return nil, err
+		}
+		if uint(len(e)) < page*limit+limit {
+			return e[page*limit:], nil
+		}
+		return e[page*limit : page*limit+limit], nil
+	}
+
+	if uint(len(a.employees.Employees)) < page*limit+limit {
+		return a.employees.Employees[page*limit:], nil
+	}
+	return a.employees.Employees[page*limit : page*limit+limit], nil
+}
+
+func (a *App) GetProtoPath() string {
+	return a.OpenPath([]runtime.FileFilter{{
+		DisplayName: "Proto binary file",
+		Pattern:     "*.bin",
+	}})
+}
+
+func (a *App) OpenPath(filters []runtime.FileFilter) string {
+	path, err := runtime.OpenFileDialog(a.ctx, runtime.OpenDialogOptions{
+		Filters: filters,
+	})
+
+	if err != nil {
+		panic(err)
+	}
+
+	return path
+}
+
+type FunctionAgg string
+
+const (
+	AVG = FunctionAgg("AVG")
+	SUM = FunctionAgg("SUM")
+)
+
+func (a *App) AggregateByColumn(groupBy proto.EmployeeField, on proto.EmployeeField, function FunctionAgg) map[string]float64 {
+	return proto.AggregateByColumn(a.employees, proto.EmployeeField(proto.SnakeCaseToPascalCase(string(groupBy))), func(ep proto.EmployeePList) float64 {
+		switch function {
+		case AVG:
+			return proto.Average(ep, proto.EmployeeField(proto.SnakeCaseToPascalCase(string(on))))
+		case SUM:
+			return proto.Sum(ep, proto.EmployeeField(proto.SnakeCaseToPascalCase(string(on))))
+		}
+
+		return 0.0
+	})
+}
--- a/ex1/build/README.md
+++ b/ex1/build/README.md
@@ -0,0 +1,35 @@
+# Build Directory
+
+The build directory is used to house all the build files and assets for your application. 
+
+The structure is:
+
+* bin - Output directory
+* darwin - macOS specific files
+* windows - Windows specific files
+
+## Mac
+
+The `darwin` directory holds files specific to Mac builds.
+These may be customised and used as part of the build. To return these files to the default state, simply delete them
+and
+build with `wails build`.
+
+The directory contains the following files:
+
+- `Info.plist` - the main plist file used for Mac builds. It is used when building using `wails build`.
+- `Info.dev.plist` - same as the main plist file but used when building using `wails dev`.
+
+## Windows
+
+The `windows` directory contains the manifest and rc files used when building with `wails build`.
+These may be customised for your application. To return these files to the default state, simply delete them and
+build with `wails build`.
+
+- `icon.ico` - The icon used for the application. This is used when building using `wails build`. If you wish to
+  use a different icon, simply replace this file with your own. If it is missing, a new `icon.ico` file
+  will be created using the `appicon.png` file in the build directory.
+- `installer/*` - The files used to create the Windows installer. These are used when building using `wails build`.
+- `info.json` - Application details used for Windows builds. The data here will be used by the Windows installer,
+  as well as the application itself (right click the exe -> properties -> details)
+- `wails.exe.manifest` - The main application manifest file.
--- a/ex1/build/appicon.png
+++ b/ex1/build/appicon.png
--- a/ex1/build/darwin/Info.dev.plist
+++ b/ex1/build/darwin/Info.dev.plist
@@ -0,0 +1,68 @@
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+    <dict>
+        <key>CFBundlePackageType</key>
+        <string>APPL</string>
+        <key>CFBundleName</key>
+        <string>{{.Info.ProductName}}</string>
+        <key>CFBundleExecutable</key>
+        <string>{{.Name}}</string>
+        <key>CFBundleIdentifier</key>
+        <string>com.wails.{{.Name}}</string>
+        <key>CFBundleVersion</key>
+        <string>{{.Info.ProductVersion}}</string>
+        <key>CFBundleGetInfoString</key>
+        <string>{{.Info.Comments}}</string>
+        <key>CFBundleShortVersionString</key>
+        <string>{{.Info.ProductVersion}}</string>
+        <key>CFBundleIconFile</key>
+        <string>iconfile</string>
+        <key>LSMinimumSystemVersion</key>
+        <string>10.13.0</string>
+        <key>NSHighResolutionCapable</key>
+        <string>true</string>
+        <key>NSHumanReadableCopyright</key>
+        <string>{{.Info.Copyright}}</string>
+        {{if .Info.FileAssociations}}
+        <key>CFBundleDocumentTypes</key>
+        <array>
+          {{range .Info.FileAssociations}}
+          <dict>
+            <key>CFBundleTypeExtensions</key>
+            <array>
+              <string>{{.Ext}}</string>
+            </array>
+            <key>CFBundleTypeName</key>
+            <string>{{.Name}}</string>
+            <key>CFBundleTypeRole</key>
+            <string>{{.Role}}</string>
+            <key>CFBundleTypeIconFile</key>
+            <string>{{.IconName}}</string>
+          </dict>
+          {{end}}
+        </array>
+        {{end}}
+        {{if .Info.Protocols}}
+        <key>CFBundleURLTypes</key>
+        <array>
+          {{range .Info.Protocols}}
+            <dict>
+                <key>CFBundleURLName</key>
+                <string>com.wails.{{.Scheme}}</string>
+                <key>CFBundleURLSchemes</key>
+                <array>
+                    <string>{{.Scheme}}</string>
+                </array>
+                <key>CFBundleTypeRole</key>
+                <string>{{.Role}}</string>
+            </dict>
+          {{end}}
+        </array>
+        {{end}}
+        <key>NSAppTransportSecurity</key>
+        <dict>
+            <key>NSAllowsLocalNetworking</key>
+            <true/>
+        </dict>
+    </dict>
+</plist>
--- a/ex1/build/darwin/Info.plist
+++ b/ex1/build/darwin/Info.plist
@@ -0,0 +1,63 @@
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+    <dict>
+        <key>CFBundlePackageType</key>
+        <string>APPL</string>
+        <key>CFBundleName</key>
+        <string>{{.Info.ProductName}}</string>
+        <key>CFBundleExecutable</key>
+        <string>{{.Name}}</string>
+        <key>CFBundleIdentifier</key>
+        <string>com.wails.{{.Name}}</string>
+        <key>CFBundleVersion</key>
+        <string>{{.Info.ProductVersion}}</string>
+        <key>CFBundleGetInfoString</key>
+        <string>{{.Info.Comments}}</string>
+        <key>CFBundleShortVersionString</key>
+        <string>{{.Info.ProductVersion}}</string>
+        <key>CFBundleIconFile</key>
+        <string>iconfile</string>
+        <key>LSMinimumSystemVersion</key>
+        <string>10.13.0</string>
+        <key>NSHighResolutionCapable</key>
+        <string>true</string>
+        <key>NSHumanReadableCopyright</key>
+        <string>{{.Info.Copyright}}</string>
+        {{if .Info.FileAssociations}}
+        <key>CFBundleDocumentTypes</key>
+        <array>
+          {{range .Info.FileAssociations}}
+          <dict>
+            <key>CFBundleTypeExtensions</key>
+            <array>
+              <string>{{.Ext}}</string>
+            </array>
+            <key>CFBundleTypeName</key>
+            <string>{{.Name}}</string>
+            <key>CFBundleTypeRole</key>
+            <string>{{.Role}}</string>
+            <key>CFBundleTypeIconFile</key>
+            <string>{{.IconName}}</string>
+          </dict>
+          {{end}}
+        </array>
+        {{end}}
+        {{if .Info.Protocols}}
+        <key>CFBundleURLTypes</key>
+        <array>
+          {{range .Info.Protocols}}
+            <dict>
+                <key>CFBundleURLName</key>
+                <string>com.wails.{{.Scheme}}</string>
+                <key>CFBundleURLSchemes</key>
+                <array>
+                    <string>{{.Scheme}}</string>
+                </array>
+                <key>CFBundleTypeRole</key>
+                <string>{{.Role}}</string>
+            </dict>
+          {{end}}
+        </array>
+        {{end}}
+    </dict>
+</plist>
--- a/ex1/build/windows/icon.ico
+++ b/ex1/build/windows/icon.ico
--- a/ex1/build/windows/info.json
+++ b/ex1/build/windows/info.json
@@ -0,0 +1,15 @@
+{
+	"fixed": {
+		"file_version": "{{.Info.ProductVersion}}"
+	},
+	"info": {
+		"0000": {
+			"ProductVersion": "{{.Info.ProductVersion}}",
+			"CompanyName": "{{.Info.CompanyName}}",
+			"FileDescription": "{{.Info.ProductName}}",
+			"LegalCopyright": "{{.Info.Copyright}}",
+			"ProductName": "{{.Info.ProductName}}",
+			"Comments": "{{.Info.Comments}}"
+		}
+	}
+}
--- a/ex1/build/windows/installer/project.nsi
+++ b/ex1/build/windows/installer/project.nsi
@@ -0,0 +1,114 @@
+Unicode true
+
+####
+## Please note: Template replacements don't work in this file. They are provided with default defines like
+## mentioned underneath.
+## If the keyword is not defined, "wails_tools.nsh" will populate them with the values from ProjectInfo.
+## If they are defined here, "wails_tools.nsh" will not touch them. This allows to use this project.nsi manually
+## from outside of Wails for debugging and development of the installer.
+##
+## For development first make a wails nsis build to populate the "wails_tools.nsh":
+## > wails build --target windows/amd64 --nsis
+## Then you can call makensis on this file with specifying the path to your binary:
+## For a AMD64 only installer:
+## > makensis -DARG_WAILS_AMD64_BINARY=..\..\bin\app.exe
+## For a ARM64 only installer:
+## > makensis -DARG_WAILS_ARM64_BINARY=..\..\bin\app.exe
+## For a installer with both architectures:
+## > makensis -DARG_WAILS_AMD64_BINARY=..\..\bin\app-amd64.exe -DARG_WAILS_ARM64_BINARY=..\..\bin\app-arm64.exe
+####
+## The following information is taken from the ProjectInfo file, but they can be overwritten here.
+####
+## !define INFO_PROJECTNAME    "MyProject" # Default "{{.Name}}"
+## !define INFO_COMPANYNAME    "MyCompany" # Default "{{.Info.CompanyName}}"
+## !define INFO_PRODUCTNAME    "MyProduct" # Default "{{.Info.ProductName}}"
+## !define INFO_PRODUCTVERSION "1.0.0"     # Default "{{.Info.ProductVersion}}"
+## !define INFO_COPYRIGHT      "Copyright" # Default "{{.Info.Copyright}}"
+###
+## !define PRODUCT_EXECUTABLE  "Application.exe"      # Default "${INFO_PROJECTNAME}.exe"
+## !define UNINST_KEY_NAME     "UninstKeyInRegistry"  # Default "${INFO_COMPANYNAME}${INFO_PRODUCTNAME}"
+####
+## !define REQUEST_EXECUTION_LEVEL "admin"            # Default "admin"  see also https://nsis.sourceforge.io/Docs/Chapter4.html
+####
+## Include the wails tools
+####
+!include "wails_tools.nsh"
+
+# The version information for this two must consist of 4 parts
+VIProductVersion "${INFO_PRODUCTVERSION}.0"
+VIFileVersion    "${INFO_PRODUCTVERSION}.0"
+
+VIAddVersionKey "CompanyName"     "${INFO_COMPANYNAME}"
+VIAddVersionKey "FileDescription" "${INFO_PRODUCTNAME} Installer"
+VIAddVersionKey "ProductVersion"  "${INFO_PRODUCTVERSION}"
+VIAddVersionKey "FileVersion"     "${INFO_PRODUCTVERSION}"
+VIAddVersionKey "LegalCopyright"  "${INFO_COPYRIGHT}"
+VIAddVersionKey "ProductName"     "${INFO_PRODUCTNAME}"
+
+# Enable HiDPI support. https://nsis.sourceforge.io/Reference/ManifestDPIAware
+ManifestDPIAware true
+
+!include "MUI.nsh"
+
+!define MUI_ICON "..\icon.ico"
+!define MUI_UNICON "..\icon.ico"
+# !define MUI_WELCOMEFINISHPAGE_BITMAP "resources\leftimage.bmp" #Include this to add a bitmap on the left side of the Welcome Page. Must be a size of 164x314
+!define MUI_FINISHPAGE_NOAUTOCLOSE # Wait on the INSTFILES page so the user can take a look into the details of the installation steps
+!define MUI_ABORTWARNING # This will warn the user if they exit from the installer.
+
+!insertmacro MUI_PAGE_WELCOME # Welcome to the installer page.
+# !insertmacro MUI_PAGE_LICENSE "resources\eula.txt" # Adds a EULA page to the installer
+!insertmacro MUI_PAGE_DIRECTORY # In which folder install page.
+!insertmacro MUI_PAGE_INSTFILES # Installing page.
+!insertmacro MUI_PAGE_FINISH # Finished installation page.
+
+!insertmacro MUI_UNPAGE_INSTFILES # Uinstalling page
+
+!insertmacro MUI_LANGUAGE "English" # Set the Language of the installer
+
+## The following two statements can be used to sign the installer and the uninstaller. The path to the binaries are provided in %1
+#!uninstfinalize 'signtool --file "%1"'
+#!finalize 'signtool --file "%1"'
+
+Name "${INFO_PRODUCTNAME}"
+OutFile "..\..\bin\${INFO_PROJECTNAME}-${ARCH}-installer.exe" # Name of the installer's file.
+InstallDir "$PROGRAMFILES64\${INFO_COMPANYNAME}\${INFO_PRODUCTNAME}" # Default installing folder ($PROGRAMFILES is Program Files folder).
+ShowInstDetails show # This will always show the installation details.
+
+Function .onInit
+   !insertmacro wails.checkArchitecture
+FunctionEnd
+
+Section
+    !insertmacro wails.setShellContext
+
+    !insertmacro wails.webview2runtime
+
+    SetOutPath $INSTDIR
+
+    !insertmacro wails.files
+
+    CreateShortcut "$SMPROGRAMS\${INFO_PRODUCTNAME}.lnk" "$INSTDIR\${PRODUCT_EXECUTABLE}"
+    CreateShortCut "$DESKTOP\${INFO_PRODUCTNAME}.lnk" "$INSTDIR\${PRODUCT_EXECUTABLE}"
+
+    !insertmacro wails.associateFiles
+    !insertmacro wails.associateCustomProtocols
+
+    !insertmacro wails.writeUninstaller
+SectionEnd
+
+Section "uninstall"
+    !insertmacro wails.setShellContext
+
+    RMDir /r "$AppData\${PRODUCT_EXECUTABLE}" # Remove the WebView2 DataPath
+
+    RMDir /r $INSTDIR
+
+    Delete "$SMPROGRAMS\${INFO_PRODUCTNAME}.lnk"
+    Delete "$DESKTOP\${INFO_PRODUCTNAME}.lnk"
+
+    !insertmacro wails.unassociateFiles
+    !insertmacro wails.unassociateCustomProtocols
+
+    !insertmacro wails.deleteUninstaller
+SectionEnd
--- a/ex1/build/windows/installer/wails_tools.nsh
+++ b/ex1/build/windows/installer/wails_tools.nsh
@@ -0,0 +1,249 @@
+# DO NOT EDIT - Generated automatically by `wails build`
+
+!include "x64.nsh"
+!include "WinVer.nsh"
+!include "FileFunc.nsh"
+
+!ifndef INFO_PROJECTNAME
+    !define INFO_PROJECTNAME "{{.Name}}"
+!endif
+!ifndef INFO_COMPANYNAME
+    !define INFO_COMPANYNAME "{{.Info.CompanyName}}"
+!endif
+!ifndef INFO_PRODUCTNAME
+    !define INFO_PRODUCTNAME "{{.Info.ProductName}}"
+!endif
+!ifndef INFO_PRODUCTVERSION
+    !define INFO_PRODUCTVERSION "{{.Info.ProductVersion}}"
+!endif
+!ifndef INFO_COPYRIGHT
+    !define INFO_COPYRIGHT "{{.Info.Copyright}}"
+!endif
+!ifndef PRODUCT_EXECUTABLE
+    !define PRODUCT_EXECUTABLE "${INFO_PROJECTNAME}.exe"
+!endif
+!ifndef UNINST_KEY_NAME
+    !define UNINST_KEY_NAME "${INFO_COMPANYNAME}${INFO_PRODUCTNAME}"
+!endif
+!define UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\${UNINST_KEY_NAME}"
+
+!ifndef REQUEST_EXECUTION_LEVEL
+    !define REQUEST_EXECUTION_LEVEL "admin"
+!endif
+
+RequestExecutionLevel "${REQUEST_EXECUTION_LEVEL}"
+
+!ifdef ARG_WAILS_AMD64_BINARY
+    !define SUPPORTS_AMD64
+!endif
+
+!ifdef ARG_WAILS_ARM64_BINARY
+    !define SUPPORTS_ARM64
+!endif
+
+!ifdef SUPPORTS_AMD64
+    !ifdef SUPPORTS_ARM64
+        !define ARCH "amd64_arm64"
+    !else
+        !define ARCH "amd64"
+    !endif
+!else
+    !ifdef SUPPORTS_ARM64
+        !define ARCH "arm64"
+    !else
+        !error "Wails: Undefined ARCH, please provide at least one of ARG_WAILS_AMD64_BINARY or ARG_WAILS_ARM64_BINARY"
+    !endif
+!endif
+
+!macro wails.checkArchitecture
+    !ifndef WAILS_WIN10_REQUIRED
+        !define WAILS_WIN10_REQUIRED "This product is only supported on Windows 10 (Server 2016) and later."
+    !endif
+
+    !ifndef WAILS_ARCHITECTURE_NOT_SUPPORTED
+        !define WAILS_ARCHITECTURE_NOT_SUPPORTED "This product can't be installed on the current Windows architecture. Supports: ${ARCH}"
+    !endif
+
+    ${If} ${AtLeastWin10}
+        !ifdef SUPPORTS_AMD64
+            ${if} ${IsNativeAMD64}
+                Goto ok
+            ${EndIf}
+        !endif
+
+        !ifdef SUPPORTS_ARM64
+            ${if} ${IsNativeARM64}
+                Goto ok
+            ${EndIf}
+        !endif
+
+        IfSilent silentArch notSilentArch
+        silentArch:
+            SetErrorLevel 65
+            Abort
+        notSilentArch:
+            MessageBox MB_OK "${WAILS_ARCHITECTURE_NOT_SUPPORTED}"
+            Quit
+    ${else}
+        IfSilent silentWin notSilentWin
+        silentWin:
+            SetErrorLevel 64
+            Abort
+        notSilentWin:
+            MessageBox MB_OK "${WAILS_WIN10_REQUIRED}"
+            Quit
+    ${EndIf}
+
+    ok:
+!macroend
+
+!macro wails.files
+    !ifdef SUPPORTS_AMD64
+        ${if} ${IsNativeAMD64}
+            File "/oname=${PRODUCT_EXECUTABLE}" "${ARG_WAILS_AMD64_BINARY}"
+        ${EndIf}
+    !endif
+
+    !ifdef SUPPORTS_ARM64
+        ${if} ${IsNativeARM64}
+            File "/oname=${PRODUCT_EXECUTABLE}" "${ARG_WAILS_ARM64_BINARY}"
+        ${EndIf}
+    !endif
+!macroend
+
+!macro wails.writeUninstaller
+    WriteUninstaller "$INSTDIR\uninstall.exe"
+
+    SetRegView 64
+    WriteRegStr HKLM "${UNINST_KEY}" "Publisher" "${INFO_COMPANYNAME}"
+    WriteRegStr HKLM "${UNINST_KEY}" "DisplayName" "${INFO_PRODUCTNAME}"
+    WriteRegStr HKLM "${UNINST_KEY}" "DisplayVersion" "${INFO_PRODUCTVERSION}"
+    WriteRegStr HKLM "${UNINST_KEY}" "DisplayIcon" "$INSTDIR\${PRODUCT_EXECUTABLE}"
+    WriteRegStr HKLM "${UNINST_KEY}" "UninstallString" "$\"$INSTDIR\uninstall.exe$\""
+    WriteRegStr HKLM "${UNINST_KEY}" "QuietUninstallString" "$\"$INSTDIR\uninstall.exe$\" /S"
+
+    ${GetSize} "$INSTDIR" "/S=0K" $0 $1 $2
+    IntFmt $0 "0x%08X" $0
+    WriteRegDWORD HKLM "${UNINST_KEY}" "EstimatedSize" "$0"
+!macroend
+
+!macro wails.deleteUninstaller
+    Delete "$INSTDIR\uninstall.exe"
+
+    SetRegView 64
+    DeleteRegKey HKLM "${UNINST_KEY}"
+!macroend
+
+!macro wails.setShellContext
+    ${If} ${REQUEST_EXECUTION_LEVEL} == "admin"
+        SetShellVarContext all
+    ${else}
+        SetShellVarContext current
+    ${EndIf}
+!macroend
+
+# Install webview2 by launching the bootstrapper
+# See https://docs.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution#online-only-deployment
+!macro wails.webview2runtime
+    !ifndef WAILS_INSTALL_WEBVIEW_DETAILPRINT
+        !define WAILS_INSTALL_WEBVIEW_DETAILPRINT "Installing: WebView2 Runtime"
+    !endif
+
+    SetRegView 64
+	# If the admin key exists and is not empty then webview2 is already installed
+	ReadRegStr $0 HKLM "SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}" "pv"
+    ${If} $0 != ""
+        Goto ok
+    ${EndIf}
+
+    ${If} ${REQUEST_EXECUTION_LEVEL} == "user"
+        # If the installer is run in user level, check the user specific key exists and is not empty then webview2 is already installed
+	    ReadRegStr $0 HKCU "Software\Microsoft\EdgeUpdate\Clients{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}" "pv"
+        ${If} $0 != ""
+            Goto ok
+        ${EndIf}
+     ${EndIf}
+
+	SetDetailsPrint both
+    DetailPrint "${WAILS_INSTALL_WEBVIEW_DETAILPRINT}"
+    SetDetailsPrint listonly
+
+    InitPluginsDir
+    CreateDirectory "$pluginsdir\webview2bootstrapper"
+    SetOutPath "$pluginsdir\webview2bootstrapper"
+    File "tmp\MicrosoftEdgeWebview2Setup.exe"
+    ExecWait '"$pluginsdir\webview2bootstrapper\MicrosoftEdgeWebview2Setup.exe" /silent /install'
+
+    SetDetailsPrint both
+    ok:
+!macroend
+
+# Copy of APP_ASSOCIATE and APP_UNASSOCIATE macros from here https://gist.github.com/nikku/281d0ef126dbc215dd58bfd5b3a5cd5b
+!macro APP_ASSOCIATE EXT FILECLASS DESCRIPTION ICON COMMANDTEXT COMMAND
+  ; Backup the previously associated file class
+  ReadRegStr $R0 SHELL_CONTEXT "Software\Classes\.${EXT}" ""
+  WriteRegStr SHELL_CONTEXT "Software\Classes\.${EXT}" "${FILECLASS}_backup" "$R0"
+
+  WriteRegStr SHELL_CONTEXT "Software\Classes\.${EXT}" "" "${FILECLASS}"
+
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${FILECLASS}" "" `${DESCRIPTION}`
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${FILECLASS}\DefaultIcon" "" `${ICON}`
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${FILECLASS}\shell" "" "open"
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${FILECLASS}\shell\open" "" `${COMMANDTEXT}`
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${FILECLASS}\shell\open\command" "" `${COMMAND}`
+!macroend
+
+!macro APP_UNASSOCIATE EXT FILECLASS
+  ; Backup the previously associated file class
+  ReadRegStr $R0 SHELL_CONTEXT "Software\Classes\.${EXT}" `${FILECLASS}_backup`
+  WriteRegStr SHELL_CONTEXT "Software\Classes\.${EXT}" "" "$R0"
+
+  DeleteRegKey SHELL_CONTEXT `Software\Classes\${FILECLASS}`
+!macroend
+
+!macro wails.associateFiles
+    ; Create file associations
+    {{range .Info.FileAssociations}}
+      !insertmacro APP_ASSOCIATE "{{.Ext}}" "{{.Name}}" "{{.Description}}" "$INSTDIR\{{.IconName}}.ico" "Open with ${INFO_PRODUCTNAME}" "$INSTDIR\${PRODUCT_EXECUTABLE} $\"%1$\""
+
+      File "..\{{.IconName}}.ico"
+    {{end}}
+!macroend
+
+!macro wails.unassociateFiles
+    ; Delete app associations
+    {{range .Info.FileAssociations}}
+      !insertmacro APP_UNASSOCIATE "{{.Ext}}" "{{.Name}}"
+
+      Delete "$INSTDIR\{{.IconName}}.ico"
+    {{end}}
+!macroend
+
+!macro CUSTOM_PROTOCOL_ASSOCIATE PROTOCOL DESCRIPTION ICON COMMAND
+  DeleteRegKey SHELL_CONTEXT "Software\Classes\${PROTOCOL}"
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${PROTOCOL}" "" "${DESCRIPTION}"
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${PROTOCOL}" "URL Protocol" ""
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${PROTOCOL}\DefaultIcon" "" "${ICON}"
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${PROTOCOL}\shell" "" ""
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${PROTOCOL}\shell\open" "" ""
+  WriteRegStr SHELL_CONTEXT "Software\Classes\${PROTOCOL}\shell\open\command" "" "${COMMAND}"
+!macroend
+
+!macro CUSTOM_PROTOCOL_UNASSOCIATE PROTOCOL
+  DeleteRegKey SHELL_CONTEXT "Software\Classes\${PROTOCOL}"
+!macroend
+
+!macro wails.associateCustomProtocols
+    ; Create custom protocols associations
+    {{range .Info.Protocols}}
+      !insertmacro CUSTOM_PROTOCOL_ASSOCIATE "{{.Scheme}}" "{{.Description}}" "$INSTDIR\${PRODUCT_EXECUTABLE},0" "$INSTDIR\${PRODUCT_EXECUTABLE} $\"%1$\""
+
+    {{end}}
+!macroend
+
+!macro wails.unassociateCustomProtocols
+    ; Delete app custom protocol associations
+    {{range .Info.Protocols}}
+      !insertmacro CUSTOM_PROTOCOL_UNASSOCIATE "{{.Scheme}}"
+    {{end}}
+!macroend
--- a/ex1/build/windows/wails.exe.manifest
+++ b/ex1/build/windows/wails.exe.manifest
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
+    <assemblyIdentity type="win32" name="com.wails.{{.Name}}" version="{{.Info.ProductVersion}}.0" processorArchitecture="*"/>
+    <dependency>
+        <dependentAssembly>
+            <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/>
+        </dependentAssembly>
+    </dependency>
+    <asmv3:application>
+        <asmv3:windowsSettings>
+            <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true/pm</dpiAware> <!-- fallback for Windows 7 and 8 -->
+            <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">permonitorv2,permonitor</dpiAwareness> <!-- falls back to per-monitor if per-monitor v2 is not supported -->
+        </asmv3:windowsSettings>
+    </asmv3:application>
+</assembly>
--- a/ex1/employee_data.bin
+++ b/ex1/employee_data.bin
--- a/ex1/employee_data.json
+++ b/ex1/employee_data.json
--- a/ex1/frontend/.vscode/extensions.json
+++ b/ex1/frontend/.vscode/extensions.json
@@ -0,0 +1,5 @@
+{
+  "recommendations": [
+    "svelte.svelte-vscode"
+  ]
+}
--- a/ex1/frontend/README.md
+++ b/ex1/frontend/README.md
@@ -0,0 +1,65 @@
+# Svelte + TS + Vite
+
+This template should help get you started developing with Svelte and TypeScript in Vite.
+
+## Recommended IDE Setup
+
+[VS Code](https://code.visualstudio.com/)
+
+ [Svelte](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode).
+
+## Need an official Svelte framework?
+
+Check out [SvelteKit](https://github.com/sveltejs/kit#readme), which is also powered by Vite. Deploy anywhere with its
+serverless-first approach and adapt to various platforms, with out of the box support for TypeScript, SCSS, and Less,
+and easily-added support for mdsvex, GraphQL, PostCSS, Tailwind CSS, and more.
+
+## Technical considerations
+
+**Why use this over SvelteKit?**
+
+- It brings its own routing solution which might not be preferable for some users.
+- It is first and foremost a framework that just happens to use Vite under the hood, not a Vite app.
+  `vite dev` and `vite build` wouldn't work in a SvelteKit environment, for example.
+
+This template contains as little as possible to get started with Vite + TypeScript + Svelte, while taking into account
+the developer experience with regards to HMR and intellisense. It demonstrates capabilities on par with the
+other `create-vite` templates and is a good starting point for beginners dipping their toes into a Vite + Svelte
+project.
+
+Should you later need the extended capabilities and extensibility provided by SvelteKit, the template has been
+structured similarly to SvelteKit so that it is easy to migrate.
+
+**Why `global.d.ts` instead of `compilerOptions.types` inside `jsconfig.json` or `tsconfig.json`?**
+
+Setting `compilerOptions.types` shuts out all other types not explicitly listed in the configuration. Using triple-slash
+references keeps the default TypeScript setting of accepting type information from the entire workspace, while also
+adding `svelte` and `vite/client` type information.
+
+**Why include `.vscode/extensions.json`?**
+
+Other templates indirectly recommend extensions via the README, but this file allows VS Code to prompt the user to
+install the recommended extension upon opening the project.
+
+**Why enable `allowJs` in the TS template?**
+
+While `allowJs: false` would indeed prevent the use of `.js` files in the project, it does not prevent the use of
+JavaScript syntax in `.svelte` files. In addition, it would force `checkJs: false`, bringing the worst of both worlds:
+not being able to guarantee the entire codebase is TypeScript, and also having worse typechecking for the existing
+JavaScript. In addition, there are valid use cases in which a mixed codebase may be relevant.
+
+**Why is HMR not preserving my local component state?**
+
+HMR state preservation comes with a number of gotchas! It has been disabled by default in both `svelte-hmr`
+and `@sveltejs/vite-plugin-svelte` due to its often surprising behavior. You can read the
+details [here](https://github.com/rixo/svelte-hmr#svelte-hmr).
+
+If you have state that's important to retain within a component, consider creating an external store which would not be
+replaced by HMR.
+
+```ts
+// store.ts
+// An extremely simple external store
+import { writable } from 'svelte/store'
+export default writable(0)
+```
--- a/ex1/frontend/dist/assets/index.9b35c904.css
+++ b/ex1/frontend/dist/assets/index.9b35c904.css
@@ -0,0 +1 @@
+html{background-color:#1b2636;text-align:center;color:#fff}body{margin:0;color:#fff;font-family:Nunito,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}@font-face{font-family:Nunito;font-style:normal;font-weight:400;src:local(""),url(/assets/nunito-v16-latin-regular.06f3af3f.woff2) format("woff2")}#app{height:100vh;text-align:center}table.svelte-1bs0eb4{width:100%;border-collapse:collapse;margin-bottom:20px}th.svelte-1bs0eb4,td.svelte-1bs0eb4{border:1px solid #ddd;padding:12px;text-align:left}th.svelte-1bs0eb4{background-color:#000}tr.svelte-1bs0eb4:nth-child(even){background-color:#343434}tr.svelte-1bs0eb4:hover{background-color:#110909}.backdrop.svelte-rr3arx{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center}.dialog.svelte-rr3arx{background-color:#fff;padding:20px;border-radius:8px;max-height:300px;overflow-y:auto}table.svelte-xmvjp8{width:100%;border-collapse:collapse;margin-bottom:20px}th.svelte-xmvjp8,td.svelte-xmvjp8{border:1px solid #ddd;padding:12px;text-align:left}th.svelte-xmvjp8{background-color:#fff}tr.svelte-xmvjp8:nth-child(even){background-color:#343434;color:#fff}tr.svelte-xmvjp8:hover{background-color:#110909;color:#fff}
--- a/ex1/frontend/dist/assets/index.b19f2494.js
+++ b/ex1/frontend/dist/assets/index.b19f2494.js
--- a/ex1/frontend/dist/assets/nunito-v16-latin-regular.06f3af3f.woff2
+++ b/ex1/frontend/dist/assets/nunito-v16-latin-regular.06f3af3f.woff2
--- a/ex1/frontend/dist/index.html
+++ b/ex1/frontend/dist/index.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+    <title>bdooc</title>
+  <script type="module" crossorigin src="/assets/index.b19f2494.js"></script>
+  <link rel="stylesheet" href="/assets/index.9b35c904.css">
+</head>
+<body>
+<div id="app"></div>
+
+</body>
+</html>
--- a/ex1/frontend/index.html
+++ b/ex1/frontend/index.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <meta content="width=device-width, initial-scale=1.0" name="viewport"/>
+    <title>bdooc</title>
+</head>
+<body>
+<div id="app"></div>
+<script src="./src/main.ts" type="module"></script>
+</body>
+</html>
--- a/ex1/frontend/package-lock.json
+++ b/ex1/frontend/package-lock.json
--- a/ex1/frontend/package.json
+++ b/ex1/frontend/package.json
@@ -0,0 +1,22 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check": "svelte-check --tsconfig ./tsconfig.json"
+  },
+  "devDependencies": {
+    "@sveltejs/vite-plugin-svelte": "^1.0.1",
+    "@tsconfig/svelte": "^3.0.0",
+    "svelte": "^3.49.0",
+    "svelte-check": "^2.8.0",
+    "svelte-preprocess": "^4.10.7",
+    "tslib": "^2.4.0",
+    "typescript": "^4.6.4",
+    "vite": "^3.0.7"
+  }
+}
--- a/ex1/frontend/package.json.md5
+++ b/ex1/frontend/package.json.md5
@@ -0,0 +1 @@
+ad9da3c17151b053a4d2fda8e3578901
--- a/ex1/frontend/src/Aggregation.svelte
+++ b/ex1/frontend/src/Aggregation.svelte
@@ -0,0 +1,109 @@
+<script lang="ts">
+  import Modal from "./Modal.svelte";
+  import { AggregateByColumn } from "../wailsjs/go/main/App.js";
+  export let isOpen: boolean;
+  export let keys: string[];
+
+  let group: string | null = null;
+  let onColumn: string | null = null;
+  let func: string | null = null;
+
+  let promise: ReturnType<typeof AggregateByColumn>;
+
+  async function Aggregate() {
+    if (!group || !onColumn || !func) return;
+    try {
+      const res = await AggregateByColumn(group, onColumn, func);
+      return res;
+    } catch (error) {
+      throw error.message;
+    }
+  }
+</script>
+
+<Modal
+  {isOpen}
+  onClose={() => {
+    isOpen = false;
+  }}
+>
+  <section>
+    <p>Aggregation</p>
+    <div>
+      <label for="group">Group by: </label>
+      <select bind:value={group} name="group" id="">
+        {#each keys as key}
+          <option value={key}>{key}</option>
+        {/each}
+      </select>
+    </div>
+    <div>
+      <label for="on-column">On: </label>
+      <select bind:value={onColumn} name="on-column" id="">
+        {#each keys as key}
+          <option value={key}>{key}</option>
+        {/each}
+      </select>
+      <label for="function">Using: </label>
+      <select bind:value={func} name="function" id="">
+        <option value="AVG">Average</option>
+        <option value="SUM">SUM</option>
+      </select>
+    </div>
+    <button type="button" on:click={() => (promise = Aggregate())}
+      >Aggregate</button
+    >
+  </section>
+  {#if promise}
+    <section>
+      {#await promise}
+        <p>Loading...</p>
+      {:then res}
+        <table class="agg-table">
+          <tr>
+            <th>{group}</th>
+            <th>{func} of {onColumn}</th>
+          </tr>
+          {#each Object.entries(res) as [key, value]}
+            <tr>
+              <td>{key}</td>
+              <td>{value}</td>
+            </tr>
+          {/each}
+        </table>
+      {:catch error}
+        <p>{error}</p>
+      {/await}
+    </section>
+  {/if}
+</Modal>
+
+<style>
+
+  table {
+    width: 100%;
+    border-collapse: collapse;
+    margin-bottom: 20px;
+  }
+
+  th,
+  td {
+    border: 1px solid #ddd;
+    padding: 12px;
+    text-align: left;
+  }
+
+  th {
+    background-color: #FFFFFF;
+  }
+
+  tr:nth-child(even) {
+    background-color: #343434;
+    color: #FFFFFF;
+  }
+
+  tr:hover {
+    background-color: #110909;
+    color: #FFFFFF;
+  }
+</style>
--- a/ex1/frontend/src/App.svelte
+++ b/ex1/frontend/src/App.svelte
@@ -0,0 +1,46 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import * as rt from "../wailsjs/runtime/runtime";
+
+  import Table from "./Table.svelte";
+  import { proto } from "../wailsjs/go/models";
+  import Aggregation from "./Aggregation.svelte";
+
+  let path: string;
+  let page = 0;
+
+  let isAggregate = false;
+
+  let limitReached: boolean;
+
+  $: console.log(limitReached);
+
+  const keys: string[] = Object.keys(new proto.Employee());
+
+  onMount(async () => {
+    rt.EventsOn("proto-opened", (_path: string) => {
+      path = _path;
+    });
+
+    rt.EventsOn("csv-converted", (_path: string) => {
+      console.log(_path);
+    });
+
+    rt.EventsOn("aggregation", () => {
+      isAggregate = true;
+    });
+  });
+</script>
+
+<main>
+  {#if path}
+    <Table {path} bind:page bind:limitReached />
+    <button disabled={page < 1} on:click={() => page--}>Prev</button>
+    <span>{page + 1}</span>
+    <button disabled={limitReached} on:click={() => page++}>Next</button>
+    <Aggregation bind:isOpen={isAggregate} {keys} />
+  {/if}
+</main>
+
+<style>
+</style>
--- a/ex1/frontend/src/Modal.svelte
+++ b/ex1/frontend/src/Modal.svelte
@@ -0,0 +1,35 @@
+<script lang="ts">
+  export let isOpen: boolean;
+  export let onClose: () => void;
+</script>
+
+{#if isOpen}
+  <dialog class="backdrop" open={isOpen}>
+    <div class="dialog">
+      <slot />
+      <button on:click={() => onClose()}>Close</button>
+    </div>
+  </dialog>
+{/if}
+
+<style>
+  .backdrop {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.5);
+    display: flex;
+    justify-content: center;
+    align-items: center;
+  }
+
+  .dialog {
+    background-color: white;
+    padding: 20px;
+    border-radius: 8px;
+    max-height: 300px;
+    overflow-y: auto;
+  }
+</style>
--- a/ex1/frontend/src/Table.svelte
+++ b/ex1/frontend/src/Table.svelte
@@ -0,0 +1,103 @@
+<script lang="ts">
+  import { GetEmployees } from "../wailsjs/go/main/App.js";
+
+  export let path: string;
+  export let page: number;
+  let limit: number = 10;
+  export let limitReached: boolean;
+
+  let _column: string | null = null;
+  let _query: string | null = null;
+  let column: string | null = null;
+  let query: string | null = null;
+
+  async function listEmployees(
+    path: string,
+    limit: number,
+    page: number,
+    column?: string,
+    query?: string,
+  ) {
+    try {
+      const employees = await GetEmployees(path, limit, page, column, query);
+      limitReached = employees.length < limit;
+      return employees;
+    } catch (error) {
+      throw error.message;
+    }
+  }
+</script>
+
+<section>
+  {#await listEmployees(path, limit, page, column, query)}
+    <p>Loading...</p>
+  {:then employees}
+    <div>
+      <select
+        name="query"
+        on:change={({ currentTarget }) => (_column = currentTarget.value)}
+      >
+        {#each Object.keys(employees[0]) as key}
+          <option value={key}>{key}</option>
+        {/each}
+      </select>
+      <input placeholder="Query" type="text" bind:value={_query} />
+      <button
+        type="button"
+        on:click={() => {
+          page = 0;
+          column = _column;
+          query = _query;
+        }}>Search</button
+      >
+      <button type="button" on:click={() => {
+        query = ""
+        column = null
+        page = 0
+      }}>Reset</button>
+    </div>
+    <table>
+      <tr>
+        {#each Object.keys(employees[0]) as key}
+          <th>{key}</th>
+        {/each}
+      </tr>
+      {#each employees as employee}
+        <tr>
+          {#each Object.values(employee) as value}
+            <td>{value}</td>
+          {/each}
+        </tr>
+      {/each}
+    </table>
+  {:catch error}
+    <p>{error}</p>
+  {/await}
+</section>
+
+<style>
+  table {
+    width: 100%;
+    border-collapse: collapse;
+    margin-bottom: 20px;
+  }
+
+  th,
+  td {
+    border: 1px solid #ddd;
+    padding: 12px;
+    text-align: left;
+  }
+
+  th {
+    background-color: #000000;
+  }
+
+  tr:nth-child(even) {
+    background-color: #343434;
+  }
+
+  tr:hover {
+    background-color: #110909;
+  }
+</style>
--- a/ex1/frontend/src/assets/fonts/OFL.txt
+++ b/ex1/frontend/src/assets/fonts/OFL.txt
@@ -0,0 +1,93 @@
+Copyright 2016 The Nunito Project Authors (contact@sansoxygen.com),
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.
--- a/ex1/frontend/src/assets/fonts/nunito-v16-latin-regular.woff2
+++ b/ex1/frontend/src/assets/fonts/nunito-v16-latin-regular.woff2
--- a/ex1/frontend/src/assets/images/logo-universal.png
+++ b/ex1/frontend/src/assets/images/logo-universal.png
--- a/ex1/frontend/src/main.ts
+++ b/ex1/frontend/src/main.ts
@@ -0,0 +1,8 @@
+import './style.css'
+import App from './App.svelte'
+
+const app = new App({
+  target: document.getElementById('app')
+})
+
+export default app
--- a/ex1/frontend/src/style.css
+++ b/ex1/frontend/src/style.css
@@ -0,0 +1,26 @@
+html {
+    background-color: rgba(27, 38, 54, 1);
+    text-align: center;
+    color: white;
+}
+
+body {
+    margin: 0;
+    color: white;
+    font-family: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
+    "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
+    sans-serif;
+}
+
+@font-face {
+    font-family: "Nunito";
+    font-style: normal;
+    font-weight: 400;
+    src: local(""),
+    url("assets/fonts/nunito-v16-latin-regular.woff2") format("woff2");
+}
+
+#app {
+    height: 100vh;
+    text-align: center;
+}
--- a/ex1/frontend/src/vite-env.d.ts
+++ b/ex1/frontend/src/vite-env.d.ts
@@ -0,0 +1,2 @@
+/// <reference types="svelte" />
+/// <reference types="vite/client" />
--- a/ex1/frontend/svelte.config.js
+++ b/ex1/frontend/svelte.config.js
@@ -0,0 +1,7 @@
+import sveltePreprocess from 'svelte-preprocess'
+
+export default {
+  // Consult https://github.com/sveltejs/svelte-preprocess
+  // for more information about preprocessors
+  preprocess: sveltePreprocess()
+}
--- a/ex1/frontend/tsconfig.json
+++ b/ex1/frontend/tsconfig.json
@@ -0,0 +1,30 @@
+{
+  "extends": "@tsconfig/svelte/tsconfig.json",
+  "compilerOptions": {
+    "target": "ESNext",
+    "useDefineForClassFields": true,
+    "module": "ESNext",
+    "resolveJsonModule": true,
+    "baseUrl": ".",
+    /**
+     * Typecheck JS in `.svelte` and `.js` files by default.
+     * Disable checkJs if you'd like to use dynamic types in JS.
+     * Note that setting allowJs false does not prevent the use
+     * of JS in `.svelte` files.
+     */
+    "allowJs": true,
+    "checkJs": true,
+    "isolatedModules": true
+  },
+  "include": [
+    "src/**/*.d.ts",
+    "src/**/*.ts",
+    "src/**/*.js",
+    "src/**/*.svelte"
+  ],
+  "references": [
+    {
+      "path": "./tsconfig.node.json"
+    }
+  ]
+}
--- a/ex1/frontend/tsconfig.node.json
+++ b/ex1/frontend/tsconfig.node.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "composite": true,
+    "module": "ESNext",
+    "moduleResolution": "Node"
+  },
+  "include": [
+    "vite.config.ts"
+  ]
+}
--- a/ex1/frontend/vite.config.ts
+++ b/ex1/frontend/vite.config.ts
@@ -0,0 +1,7 @@
+import {defineConfig} from 'vite'
+import {svelte} from '@sveltejs/vite-plugin-svelte'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [svelte()]
+})
--- a/ex1/frontend/wailsjs/go/main/App.d.ts
+++ b/ex1/frontend/wailsjs/go/main/App.d.ts
@@ -0,0 +1,13 @@
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+import {proto} from '../models';
+import {main} from '../models';
+import {frontend} from '../models';
+
+export function AggregateByColumn(arg1:proto.EmployeeField,arg2:proto.EmployeeField,arg3:main.FunctionAgg):Promise<{[key: string]: number}>;
+
+export function GetEmployees(arg1:string,arg2:number,arg3:number,arg4:any,arg5:any):Promise<Array<proto.Employee>>;
+
+export function GetProtoPath():Promise<string>;
+
+export function OpenPath(arg1:Array<frontend.FileFilter>):Promise<string>;
--- a/ex1/frontend/wailsjs/go/main/App.js
+++ b/ex1/frontend/wailsjs/go/main/App.js
@@ -0,0 +1,19 @@
+// @ts-check
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+
+export function AggregateByColumn(arg1, arg2, arg3) {
+  return window['go']['main']['App']['AggregateByColumn'](arg1, arg2, arg3);
+}
+
+export function GetEmployees(arg1, arg2, arg3, arg4, arg5) {
+  return window['go']['main']['App']['GetEmployees'](arg1, arg2, arg3, arg4, arg5);
+}
+
+export function GetProtoPath() {
+  return window['go']['main']['App']['GetProtoPath']();
+}
+
+export function OpenPath(arg1) {
+  return window['go']['main']['App']['OpenPath'](arg1);
+}
--- a/ex1/frontend/wailsjs/go/models.ts
+++ b/ex1/frontend/wailsjs/go/models.ts
@@ -0,0 +1,87 @@
+export namespace proto {
+	
+	export class Employee {
+	    emp_id?: number;
+	    name_prefix?: string;
+	    first_name?: string;
+	    middle_initial?: string;
+	    last_name?: string;
+	    gender?: number;
+	    email?: string;
+	    fathers_name?: string;
+	    mothers_name?: string;
+	    mothers_maiden_name?: string;
+	    birthdate?: string;
+	    birth_time?: string;
+	    weight_kg?: number;
+	    joining_date?: string;
+	    joining_quarter?: number;
+	    joining_half?: number;
+	    joining_year?: number;
+	    joining_month?: number;
+	    joining_month_name?: number;
+	    joining_month_name_short?: number;
+	    joining_month_day?: number;
+	    joining_week_day?: number;
+	    joining_week_day_short?: number;
+	    years_of_service?: number;
+	    salary?: number;
+	    latest_hike_percentage?: string;
+	    ssn?: string;
+	    phone_number?: string;
+	    place_name?: string;
+	    county?: string;
+	    city?: string;
+	    state?: string;
+	    zip?: number;
+	    region?: string;
+	    username?: string;
+	    password?: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new Employee(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.emp_id = source["emp_id"];
+	        this.name_prefix = source["name_prefix"];
+	        this.first_name = source["first_name"];
+	        this.middle_initial = source["middle_initial"];
+	        this.last_name = source["last_name"];
+	        this.gender = source["gender"];
+	        this.email = source["email"];
+	        this.fathers_name = source["fathers_name"];
+	        this.mothers_name = source["mothers_name"];
+	        this.mothers_maiden_name = source["mothers_maiden_name"];
+	        this.birthdate = source["birthdate"];
+	        this.birth_time = source["birth_time"];
+	        this.weight_kg = source["weight_kg"];
+	        this.joining_date = source["joining_date"];
+	        this.joining_quarter = source["joining_quarter"];
+	        this.joining_half = source["joining_half"];
+	        this.joining_year = source["joining_year"];
+	        this.joining_month = source["joining_month"];
+	        this.joining_month_name = source["joining_month_name"];
+	        this.joining_month_name_short = source["joining_month_name_short"];
+	        this.joining_month_day = source["joining_month_day"];
+	        this.joining_week_day = source["joining_week_day"];
+	        this.joining_week_day_short = source["joining_week_day_short"];
+	        this.years_of_service = source["years_of_service"];
+	        this.salary = source["salary"];
+	        this.latest_hike_percentage = source["latest_hike_percentage"];
+	        this.ssn = source["ssn"];
+	        this.phone_number = source["phone_number"];
+	        this.place_name = source["place_name"];
+	        this.county = source["county"];
+	        this.city = source["city"];
+	        this.state = source["state"];
+	        this.zip = source["zip"];
+	        this.region = source["region"];
+	        this.username = source["username"];
+	        this.password = source["password"];
+	    }
+	}
+
+}
+
--- a/ex1/frontend/wailsjs/runtime/package.json
+++ b/ex1/frontend/wailsjs/runtime/package.json
@@ -0,0 +1,24 @@
+{
+  "name": "@wailsapp/runtime",
+  "version": "2.0.0",
+  "description": "Wails Javascript runtime library",
+  "main": "runtime.js",
+  "types": "runtime.d.ts",
+  "scripts": {
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/wailsapp/wails.git"
+  },
+  "keywords": [
+    "Wails",
+    "Javascript",
+    "Go"
+  ],
+  "author": "Lea Anthony <lea.anthony@gmail.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/wailsapp/wails/issues"
+  },
+  "homepage": "https://github.com/wailsapp/wails#readme"
+}
--- a/ex1/frontend/wailsjs/runtime/runtime.d.ts
+++ b/ex1/frontend/wailsjs/runtime/runtime.d.ts
@@ -0,0 +1,235 @@
+/*
+ _       __      _ __
+| |     / /___ _(_) /____
+| | /| / / __ `/ / / ___/
+| |/ |/ / /_/ / / (__  )
+|__/|__/\__,_/_/_/____/
+The electron alternative for Go
+(c) Lea Anthony 2019-present
+*/
+
+export interface Position {
+    x: number;
+    y: number;
+}
+
+export interface Size {
+    w: number;
+    h: number;
+}
+
+export interface Screen {
+    isCurrent: boolean;
+    isPrimary: boolean;
+    width : number
+    height : number
+}
+
+// Environment information such as platform, buildtype, ...
+export interface EnvironmentInfo {
+    buildType: string;
+    platform: string;
+    arch: string;
+}
+
+// [EventsEmit](https://wails.io/docs/reference/runtime/events#eventsemit)
+// emits the given event. Optional data may be passed with the event.
+// This will trigger any event listeners.
+export function EventsEmit(eventName: string, ...data: any): void;
+
+// [EventsOn](https://wails.io/docs/reference/runtime/events#eventson) sets up a listener for the given event name.
+export function EventsOn(eventName: string, callback: (...data: any) => void): () => void;
+
+// [EventsOnMultiple](https://wails.io/docs/reference/runtime/events#eventsonmultiple)
+// sets up a listener for the given event name, but will only trigger a given number times.
+export function EventsOnMultiple(eventName: string, callback: (...data: any) => void, maxCallbacks: number): () => void;
+
+// [EventsOnce](https://wails.io/docs/reference/runtime/events#eventsonce)
+// sets up a listener for the given event name, but will only trigger once.
+export function EventsOnce(eventName: string, callback: (...data: any) => void): () => void;
+
+// [EventsOff](https://wails.io/docs/reference/runtime/events#eventsoff)
+// unregisters the listener for the given event name.
+export function EventsOff(eventName: string, ...additionalEventNames: string[]): void;
+
+// [EventsOffAll](https://wails.io/docs/reference/runtime/events#eventsoffall)
+// unregisters all listeners.
+export function EventsOffAll(): void;
+
+// [LogPrint](https://wails.io/docs/reference/runtime/log#logprint)
+// logs the given message as a raw message
+export function LogPrint(message: string): void;
+
+// [LogTrace](https://wails.io/docs/reference/runtime/log#logtrace)
+// logs the given message at the `trace` log level.
+export function LogTrace(message: string): void;
+
+// [LogDebug](https://wails.io/docs/reference/runtime/log#logdebug)
+// logs the given message at the `debug` log level.
+export function LogDebug(message: string): void;
+
+// [LogError](https://wails.io/docs/reference/runtime/log#logerror)
+// logs the given message at the `error` log level.
+export function LogError(message: string): void;
+
+// [LogFatal](https://wails.io/docs/reference/runtime/log#logfatal)
+// logs the given message at the `fatal` log level.
+// The application will quit after calling this method.
+export function LogFatal(message: string): void;
+
+// [LogInfo](https://wails.io/docs/reference/runtime/log#loginfo)
+// logs the given message at the `info` log level.
+export function LogInfo(message: string): void;
+
+// [LogWarning](https://wails.io/docs/reference/runtime/log#logwarning)
+// logs the given message at the `warning` log level.
+export function LogWarning(message: string): void;
+
+// [WindowReload](https://wails.io/docs/reference/runtime/window#windowreload)
+// Forces a reload by the main application as well as connected browsers.
+export function WindowReload(): void;
+
+// [WindowReloadApp](https://wails.io/docs/reference/runtime/window#windowreloadapp)
+// Reloads the application frontend.
+export function WindowReloadApp(): void;
+
+// [WindowSetAlwaysOnTop](https://wails.io/docs/reference/runtime/window#windowsetalwaysontop)
+// Sets the window AlwaysOnTop or not on top.
+export function WindowSetAlwaysOnTop(b: boolean): void;
+
+// [WindowSetSystemDefaultTheme](https://wails.io/docs/next/reference/runtime/window#windowsetsystemdefaulttheme)
+// *Windows only*
+// Sets window theme to system default (dark/light).
+export function WindowSetSystemDefaultTheme(): void;
+
+// [WindowSetLightTheme](https://wails.io/docs/next/reference/runtime/window#windowsetlighttheme)
+// *Windows only*
+// Sets window to light theme.
+export function WindowSetLightTheme(): void;
+
+// [WindowSetDarkTheme](https://wails.io/docs/next/reference/runtime/window#windowsetdarktheme)
+// *Windows only*
+// Sets window to dark theme.
+export function WindowSetDarkTheme(): void;
+
+// [WindowCenter](https://wails.io/docs/reference/runtime/window#windowcenter)
+// Centers the window on the monitor the window is currently on.
+export function WindowCenter(): void;
+
+// [WindowSetTitle](https://wails.io/docs/reference/runtime/window#windowsettitle)
+// Sets the text in the window title bar.
+export function WindowSetTitle(title: string): void;
+
+// [WindowFullscreen](https://wails.io/docs/reference/runtime/window#windowfullscreen)
+// Makes the window full screen.
+export function WindowFullscreen(): void;
+
+// [WindowUnfullscreen](https://wails.io/docs/reference/runtime/window#windowunfullscreen)
+// Restores the previous window dimensions and position prior to full screen.
+export function WindowUnfullscreen(): void;
+
+// [WindowIsFullscreen](https://wails.io/docs/reference/runtime/window#windowisfullscreen)
+// Returns the state of the window, i.e. whether the window is in full screen mode or not.
+export function WindowIsFullscreen(): Promise<boolean>;
+
+// [WindowSetSize](https://wails.io/docs/reference/runtime/window#windowsetsize)
+// Sets the width and height of the window.
+export function WindowSetSize(width: number, height: number): Promise<Size>;
+
+// [WindowGetSize](https://wails.io/docs/reference/runtime/window#windowgetsize)
+// Gets the width and height of the window.
+export function WindowGetSize(): Promise<Size>;
+
+// [WindowSetMaxSize](https://wails.io/docs/reference/runtime/window#windowsetmaxsize)
+// Sets the maximum window size. Will resize the window if the window is currently larger than the given dimensions.
+// Setting a size of 0,0 will disable this constraint.
+export function WindowSetMaxSize(width: number, height: number): void;
+
+// [WindowSetMinSize](https://wails.io/docs/reference/runtime/window#windowsetminsize)
+// Sets the minimum window size. Will resize the window if the window is currently smaller than the given dimensions.
+// Setting a size of 0,0 will disable this constraint.
+export function WindowSetMinSize(width: number, height: number): void;
+
+// [WindowSetPosition](https://wails.io/docs/reference/runtime/window#windowsetposition)
+// Sets the window position relative to the monitor the window is currently on.
+export function WindowSetPosition(x: number, y: number): void;
+
+// [WindowGetPosition](https://wails.io/docs/reference/runtime/window#windowgetposition)
+// Gets the window position relative to the monitor the window is currently on.
+export function WindowGetPosition(): Promise<Position>;
+
+// [WindowHide](https://wails.io/docs/reference/runtime/window#windowhide)
+// Hides the window.
+export function WindowHide(): void;
+
+// [WindowShow](https://wails.io/docs/reference/runtime/window#windowshow)
+// Shows the window, if it is currently hidden.
+export function WindowShow(): void;
+
+// [WindowMaximise](https://wails.io/docs/reference/runtime/window#windowmaximise)
+// Maximises the window to fill the screen.
+export function WindowMaximise(): void;
+
+// [WindowToggleMaximise](https://wails.io/docs/reference/runtime/window#windowtogglemaximise)
+// Toggles between Maximised and UnMaximised.
+export function WindowToggleMaximise(): void;
+
+// [WindowUnmaximise](https://wails.io/docs/reference/runtime/window#windowunmaximise)
+// Restores the window to the dimensions and position prior to maximising.
+export function WindowUnmaximise(): void;
+
+// [WindowIsMaximised](https://wails.io/docs/reference/runtime/window#windowismaximised)
+// Returns the state of the window, i.e. whether the window is maximised or not.
+export function WindowIsMaximised(): Promise<boolean>;
+
+// [WindowMinimise](https://wails.io/docs/reference/runtime/window#windowminimise)
+// Minimises the window.
+export function WindowMinimise(): void;
+
+// [WindowUnminimise](https://wails.io/docs/reference/runtime/window#windowunminimise)
+// Restores the window to the dimensions and position prior to minimising.
+export function WindowUnminimise(): void;
+
+// [WindowIsMinimised](https://wails.io/docs/reference/runtime/window#windowisminimised)
+// Returns the state of the window, i.e. whether the window is minimised or not.
+export function WindowIsMinimised(): Promise<boolean>;
+
+// [WindowIsNormal](https://wails.io/docs/reference/runtime/window#windowisnormal)
+// Returns the state of the window, i.e. whether the window is normal or not.
+export function WindowIsNormal(): Promise<boolean>;
+
+// [WindowSetBackgroundColour](https://wails.io/docs/reference/runtime/window#windowsetbackgroundcolour)
+// Sets the background colour of the window to the given RGBA colour definition. This colour will show through for all transparent pixels.
+export function WindowSetBackgroundColour(R: number, G: number, B: number, A: number): void;
+
+// [ScreenGetAll](https://wails.io/docs/reference/runtime/window#screengetall)
+// Gets the all screens. Call this anew each time you want to refresh data from the underlying windowing system.
+export function ScreenGetAll(): Promise<Screen[]>;
+
+// [BrowserOpenURL](https://wails.io/docs/reference/runtime/browser#browseropenurl)
+// Opens the given URL in the system browser.
+export function BrowserOpenURL(url: string): void;
+
+// [Environment](https://wails.io/docs/reference/runtime/intro#environment)
+// Returns information about the environment
+export function Environment(): Promise<EnvironmentInfo>;
+
+// [Quit](https://wails.io/docs/reference/runtime/intro#quit)
+// Quits the application.
+export function Quit(): void;
+
+// [Hide](https://wails.io/docs/reference/runtime/intro#hide)
+// Hides the application.
+export function Hide(): void;
+
+// [Show](https://wails.io/docs/reference/runtime/intro#show)
+// Shows the application.
+export function Show(): void;
+
+// [ClipboardGetText](https://wails.io/docs/reference/runtime/clipboard#clipboardgettext)
+// Returns the current text stored on clipboard
+export function ClipboardGetText(): Promise<string>;
+
+// [ClipboardSetText](https://wails.io/docs/reference/runtime/clipboard#clipboardsettext)
+// Sets a text on the clipboard
+export function ClipboardSetText(text: string): Promise<boolean>;
--- a/ex1/frontend/wailsjs/runtime/runtime.js
+++ b/ex1/frontend/wailsjs/runtime/runtime.js
@@ -0,0 +1,202 @@
+/*
+ _       __      _ __
+| |     / /___ _(_) /____
+| | /| / / __ `/ / / ___/
+| |/ |/ / /_/ / / (__  )
+|__/|__/\__,_/_/_/____/
+The electron alternative for Go
+(c) Lea Anthony 2019-present
+*/
+
+export function LogPrint(message) {
+    window.runtime.LogPrint(message);
+}
+
+export function LogTrace(message) {
+    window.runtime.LogTrace(message);
+}
+
+export function LogDebug(message) {
+    window.runtime.LogDebug(message);
+}
+
+export function LogInfo(message) {
+    window.runtime.LogInfo(message);
+}
+
+export function LogWarning(message) {
+    window.runtime.LogWarning(message);
+}
+
+export function LogError(message) {
+    window.runtime.LogError(message);
+}
+
+export function LogFatal(message) {
+    window.runtime.LogFatal(message);
+}
+
+export function EventsOnMultiple(eventName, callback, maxCallbacks) {
+    return window.runtime.EventsOnMultiple(eventName, callback, maxCallbacks);
+}
+
+export function EventsOn(eventName, callback) {
+    return EventsOnMultiple(eventName, callback, -1);
+}
+
+export function EventsOff(eventName, ...additionalEventNames) {
+    return window.runtime.EventsOff(eventName, ...additionalEventNames);
+}
+
+export function EventsOnce(eventName, callback) {
+    return EventsOnMultiple(eventName, callback, 1);
+}
+
+export function EventsEmit(eventName) {
+    let args = [eventName].slice.call(arguments);
+    return window.runtime.EventsEmit.apply(null, args);
+}
+
+export function WindowReload() {
+    window.runtime.WindowReload();
+}
+
+export function WindowReloadApp() {
+    window.runtime.WindowReloadApp();
+}
+
+export function WindowSetAlwaysOnTop(b) {
+    window.runtime.WindowSetAlwaysOnTop(b);
+}
+
+export function WindowSetSystemDefaultTheme() {
+    window.runtime.WindowSetSystemDefaultTheme();
+}
+
+export function WindowSetLightTheme() {
+    window.runtime.WindowSetLightTheme();
+}
+
+export function WindowSetDarkTheme() {
+    window.runtime.WindowSetDarkTheme();
+}
+
+export function WindowCenter() {
+    window.runtime.WindowCenter();
+}
+
+export function WindowSetTitle(title) {
+    window.runtime.WindowSetTitle(title);
+}
+
+export function WindowFullscreen() {
+    window.runtime.WindowFullscreen();
+}
+
+export function WindowUnfullscreen() {
+    window.runtime.WindowUnfullscreen();
+}
+
+export function WindowIsFullscreen() {
+    return window.runtime.WindowIsFullscreen();
+}
+
+export function WindowGetSize() {
+    return window.runtime.WindowGetSize();
+}
+
+export function WindowSetSize(width, height) {
+    window.runtime.WindowSetSize(width, height);
+}
+
+export function WindowSetMaxSize(width, height) {
+    window.runtime.WindowSetMaxSize(width, height);
+}
+
+export function WindowSetMinSize(width, height) {
+    window.runtime.WindowSetMinSize(width, height);
+}
+
+export function WindowSetPosition(x, y) {
+    window.runtime.WindowSetPosition(x, y);
+}
+
+export function WindowGetPosition() {
+    return window.runtime.WindowGetPosition();
+}
+
+export function WindowHide() {
+    window.runtime.WindowHide();
+}
+
+export function WindowShow() {
+    window.runtime.WindowShow();
+}
+
+export function WindowMaximise() {
+    window.runtime.WindowMaximise();
+}
+
+export function WindowToggleMaximise() {
+    window.runtime.WindowToggleMaximise();
+}
+
+export function WindowUnmaximise() {
+    window.runtime.WindowUnmaximise();
+}
+
+export function WindowIsMaximised() {
+    return window.runtime.WindowIsMaximised();
+}
+
+export function WindowMinimise() {
+    window.runtime.WindowMinimise();
+}
+
+export function WindowUnminimise() {
+    window.runtime.WindowUnminimise();
+}
+
+export function WindowSetBackgroundColour(R, G, B, A) {
+    window.runtime.WindowSetBackgroundColour(R, G, B, A);
+}
+
+export function ScreenGetAll() {
+    return window.runtime.ScreenGetAll();
+}
+
+export function WindowIsMinimised() {
+    return window.runtime.WindowIsMinimised();
+}
+
+export function WindowIsNormal() {
+    return window.runtime.WindowIsNormal();
+}
+
+export function BrowserOpenURL(url) {
+    window.runtime.BrowserOpenURL(url);
+}
+
+export function Environment() {
+    return window.runtime.Environment();
+}
+
+export function Quit() {
+    window.runtime.Quit();
+}
+
+export function Hide() {
+    window.runtime.Hide();
+}
+
+export function Show() {
+    window.runtime.Show();
+}
+
+export function ClipboardGetText() {
+    return window.runtime.ClipboardGetText();
+}
+
+export function ClipboardSetText(text) {
+    return window.runtime.ClipboardSetText(text);
+}
--- a/ex1/go.mod
+++ b/ex1/go.mod
@@ -0,0 +1,36 @@
+module git.cems.dev/cdricms/bdooc
+
+go 1.22.2
+
+require github.com/wailsapp/wails/v2 v2.8.1
+
+require (
+	github.com/bep/debounce v1.2.1 // indirect
+	github.com/go-ole/go-ole v1.2.6 // indirect
+	github.com/godbus/dbus/v5 v5.1.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
+	github.com/labstack/echo/v4 v4.10.2 // indirect
+	github.com/labstack/gommon v0.4.0 // indirect
+	github.com/leaanthony/go-ansi-parser v1.6.0 // indirect
+	github.com/leaanthony/gosod v1.0.3 // indirect
+	github.com/leaanthony/slicer v1.6.0 // indirect
+	github.com/leaanthony/u v1.1.1 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/rivo/uniseg v0.4.4 // indirect
+	github.com/samber/lo v1.38.1 // indirect
+	github.com/tkrajina/go-reflector v0.5.6 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasttemplate v1.2.2 // indirect
+	github.com/wailsapp/go-webview2 v1.0.10 // indirect
+	github.com/wailsapp/mimetype v1.4.1 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
+	golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1 // indirect
+	golang.org/x/net v0.20.0 // indirect
+	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.33.0 // direct
+)
--- a/ex1/go.sum
+++ b/ex1/go.sum
@@ -0,0 +1,98 @@
+github.com/bep/debounce v1.2.1 h1:v67fRdBA9UQu2NhLFXrSg0Brw7CexQekrBwDMM8bzeY=
+github.com/bep/debounce v1.2.1/go.mod h1:H8yggRPQKLUhUoqrJC1bO2xNya7vanpDl7xR3ISbCJ0=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY=
+github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
+github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
+github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e h1:Q3+PugElBCf4PFpxhErSzU3/PY5sFL5Z6rfv4AbGAck=
+github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e/go.mod h1:alcuEEnZsY1WQsagKhZDsoPCRoOijYqhZvPwLG0kzVs=
+github.com/labstack/echo/v4 v4.10.2 h1:n1jAhnq/elIFTHr1EYpiYtyKgx4RW9ccVgkqByZaN2M=
+github.com/labstack/echo/v4 v4.10.2/go.mod h1:OEyqf2//K1DFdE57vw2DRgWY0M7s65IVQO2FzvI4J5k=
+github.com/labstack/gommon v0.4.0 h1:y7cvthEAEbU0yHOf4axH8ZG2NH8knB9iNSoTO8dyIk8=
+github.com/labstack/gommon v0.4.0/go.mod h1:uW6kP17uPlLJsD3ijUYn3/M5bAxtlZhMI6m3MFxTMTM=
+github.com/leaanthony/debme v1.2.1 h1:9Tgwf+kjcrbMQ4WnPcEIUcQuIZYqdWftzZkBr+i/oOc=
+github.com/leaanthony/debme v1.2.1/go.mod h1:3V+sCm5tYAgQymvSOfYQ5Xx2JCr+OXiD9Jkw3otUjiA=
+github.com/leaanthony/go-ansi-parser v1.6.0 h1:T8TuMhFB6TUMIUm0oRrSbgJudTFw9csT3ZK09w0t4Pg=
+github.com/leaanthony/go-ansi-parser v1.6.0/go.mod h1:+vva/2y4alzVmmIEpk9QDhA7vLC5zKDTRwfZGOp3IWU=
+github.com/leaanthony/gosod v1.0.3 h1:Fnt+/B6NjQOVuCWOKYRREZnjGyvg+mEhd1nkkA04aTQ=
+github.com/leaanthony/gosod v1.0.3/go.mod h1:BJ2J+oHsQIyIQpnLPjnqFGTMnOZXDbvWtRCSG7jGxs4=
+github.com/leaanthony/slicer v1.5.0/go.mod h1:FwrApmf8gOrpzEWM2J/9Lh79tyq8KTX5AzRtwV7m4AY=
+github.com/leaanthony/slicer v1.6.0 h1:1RFP5uiPJvT93TAHi+ipd3NACobkW53yUiBqZheE/Js=
+github.com/leaanthony/slicer v1.6.0/go.mod h1:o/Iz29g7LN0GqH3aMjWAe90381nyZlDNquK+mtH2Fj8=
+github.com/leaanthony/u v1.1.1 h1:TUFjwDGlNX+WuwVEzDqQwC2lOv0P4uhTQw7CMFdiK7M=
+github.com/leaanthony/u v1.1.1/go.mod h1:9+o6hejoRljvZ3BzdYlVL0JYCwtnAsVuN9pVTQcaRfI=
+github.com/matryer/is v1.4.0 h1:sosSmIWwkYITGrxZ25ULNDeKiMNzFSr4V/eqBQP0PeE=
+github.com/matryer/is v1.4.0/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=
+github.com/mattn/go-colorable v0.1.11/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 h1:KoWmjvw+nsYOo29YJK9vDA65RGE3NrOnUtO7a+RF9HU=
+github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8/go.mod h1:HKlIX3XHQyzLZPlr7++PzdhaXEj94dEiJgZDTsxEqUI=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
+github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/samber/lo v1.38.1 h1:j2XEAqXKb09Am4ebOg31SpvzUTTs6EN3VfgeLUhPdXM=
+github.com/samber/lo v1.38.1/go.mod h1:+m/ZKRl6ClXCE2Lgf3MsQlWfh4bn1bz6CXEOxnEXnEA=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/tkrajina/go-reflector v0.5.6 h1:hKQ0gyocG7vgMD2M3dRlYN6WBBOmdoOzJ6njQSepKdE=
+github.com/tkrajina/go-reflector v0.5.6/go.mod h1:ECbqLgccecY5kPmPmXg1MrHW585yMcDkVl6IvJe64T4=
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+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
+golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/ex1/main.go
+++ b/ex1/main.go
@@ -0,0 +1,98 @@
+package main
+
+import (
+	"embed"
+	"encoding/csv"
+	"os"
+
+	"git.cems.dev/cdricms/bdooc/parsing"
+	p "git.cems.dev/cdricms/bdooc/proto"
+	"github.com/wailsapp/wails/v2"
+	"github.com/wailsapp/wails/v2/pkg/menu"
+	"github.com/wailsapp/wails/v2/pkg/menu/keys"
+	"github.com/wailsapp/wails/v2/pkg/options"
+	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
+	"github.com/wailsapp/wails/v2/pkg/runtime"
+)
+
+//go:embed all:frontend/dist
+var assets embed.FS
+
+func main() {
+	// Create an instance of the app structure
+	app := NewApp()
+  appMenu := menu.NewMenu()
+  fileMenu := appMenu.AddSubmenu("File")
+  fileMenu.AddText("Open proto file", keys.CmdOrCtrl("o"), func(_ *menu.CallbackData) {
+    path := app.GetProtoPath()
+    runtime.EventsEmit(app.ctx, "proto-opened", path)
+  })
+
+  fileMenu.AddText("Convert CSV to Proto", keys.CmdOrCtrl("k"), func(_ *menu.CallbackData) {
+    path := app.OpenPath([]runtime.FileFilter{{
+      DisplayName: "CSV file",
+      Pattern: "*.csv",      
+    }}) 
+
+    employeesProtoChan := make(chan *p.EmployeeList)
+
+    go func() {
+      // Parse CSV to Go Struct
+      file, err := os.Open(path)
+      if err != nil {
+        panic(err)
+      }
+      defer file.Close()
+      reader := csv.NewReader(file) 
+      employees, err := parsing.UnmarshalEmployees(reader)
+      if err != nil {
+        panic(err)
+      }
+      // Convert CSV's Go struct to Proto
+      employeesProto := parsing.MapToProto(employees)
+      employeesProtoChan <- employeesProto
+    }()
+
+    // Get the filepath from the user.
+    filePath, err := runtime.SaveFileDialog(app.ctx, runtime.SaveDialogOptions{
+      Title: "Destination for Proto file.",
+      Filters: []runtime.FileFilter{{
+        DisplayName: "Proto binary file",
+        Pattern: "*.bin",
+      }},
+    })
+    if err != nil {
+      panic(err)
+    }
+    // Await the conversion
+    employeesProto := <-employeesProtoChan
+    // Save
+    employeesProto.SaveToFile(filePath)
+    runtime.EventsEmit(app.ctx, "csv-converted", filePath)
+  })
+
+  analysisMenu :=appMenu.AddSubmenu("Analysis")
+  analysisMenu.AddText("Aggregation", keys.CmdOrCtrl("a"), func(_ *menu.CallbackData) {
+    runtime.EventsEmit(app.ctx, "aggregation")
+  })
+
+	// Create application with options
+	err := wails.Run(&options.App{
+		Title:  "bdooc-t",
+		Width:  1024,
+		Height: 768,
+		AssetServer: &assetserver.Options{
+			Assets: assets,
+		},
+    Menu: appMenu,
+		BackgroundColour: &options.RGBA{R: 27, G: 38, B: 54, A: 1},
+		OnStartup:        app.startup,
+		Bind: []interface{}{
+			app,
+		},
+	})
+
+	if err != nil {
+		println("Error:", err.Error())
+	}
+}
--- a/ex1/parsing/parsing.go
+++ b/ex1/parsing/parsing.go
@@ -0,0 +1,190 @@
+package parsing
+
+import (
+	"encoding/csv"
+	"errors"
+	"reflect"
+	"strconv"
+  "git.cems.dev/cdricms/bdooc/proto"
+)
+
+func UnmarshalEmployees(reader *csv.Reader) ([]Employee, error) {
+	reader.Comma = ','
+	headers, err := reader.Read()
+	if err != nil {
+		return nil, errors.New("Couldn't read the headers.")
+	}
+
+	e := Employee{}
+	refet := reflect.TypeOf(e)
+	tagMap := make(map[string]int)
+	headersLength := len(headers)
+	numFields := refet.NumField()
+	for i := 0; i < numFields && i < headersLength; i++ {
+		field := refet.Field(i)
+		if field.Tag.Get("csv") == headers[i] {
+			tagMap[field.Name] = i
+		}
+	}
+
+	var employees []Employee
+	for {
+		record, err := reader.Read()
+		if err != nil {
+			break
+		}
+
+		employee := Employee{}
+		reflectionValue := reflect.ValueOf(&employee).Elem()
+
+		for fieldName, index := range tagMap {
+			field := reflectionValue.FieldByName(fieldName)
+			if field.IsValid() {
+				switch field.Type().Name() {
+				case "string":
+					field.SetString(record[index])
+				case "uint8":
+					if intValue, err := strconv.ParseUint(record[index], 10, 8); err == nil {
+						field.SetUint(intValue)
+					}
+				case "uint16":
+					if intValue, err := strconv.ParseUint(record[index], 10, 16); err == nil {
+						field.SetUint(intValue)
+					}
+				case "uint32":
+					if intValue, err := strconv.ParseUint(record[index], 10, 32); err == nil {
+						field.SetUint(intValue)
+					}
+				case "float32":
+					if floatValue, err := strconv.ParseFloat(record[index], 32); err == nil {
+						field.SetFloat(floatValue)
+					}
+				case "Gender":
+					field.Set(reflect.ValueOf(Gender(rune(record[index][0]))))
+				case "Quarter":
+					field.Set(reflect.ValueOf(Quarter(string(record[index]))))
+				case "Half":
+					field.Set(reflect.ValueOf(Half(string(record[index]))))
+				case "Month":
+					field.Set(reflect.ValueOf(Month(string(record[index]))))
+				case "MonthShort":
+					field.Set(reflect.ValueOf(MonthShort(string(record[index]))))
+				case "WeekDay":
+					field.Set(reflect.ValueOf(WeekDay(string(record[index]))))
+				case "WeekDayShort":
+					field.Set(reflect.ValueOf(WeekDayShort(string(record[index]))))
+				}
+			}
+		}
+		employees = append(employees, employee)
+	}
+
+	return employees, nil
+}
+
+func (e Employee) MapToProto() *proto.Employee {
+  
+  employee := &proto.Employee{}
+
+  employee.EmpId = e.EmpID
+  employee.NamePrefix = e.NamePrefix
+  employee.FirstName = e.FirstName
+  employee.MiddleInitial = e.MiddleInitial
+  employee.LastName = e.LastName
+  employee.Gender = proto.Gender(e.Gender)
+  employee.Email = e.Email
+  employee.FathersName = e.FathersName
+  employee.MothersName = e.MothersName
+  employee.MothersMaidenName = e.MothersMaidenName
+  employee.Birthdate = e.Birthdate
+  employee.BirthTime = e.BirthTime
+  employee.WeightKg = uint32(e.WeightKg)
+  employee.JoiningDate = e.JoiningDate
+  employee.JoiningQuarter = proto.Quarter(e.JoiningQuarter.Uint8())
+  employee.JoiningHalf = proto.Half(e.JoiningHalf.Uint8())
+  employee.JoiningYear = uint32(e.JoiningYear)
+  employee.JoiningMonth = uint32(e.JoiningMonth)
+  employee.JoiningMonthName = proto.Month(e.JoiningMonthName.Uint8())
+  employee.JoiningMonthNameShort = proto.MonthShort(e.JoiningMonthNameShort.Uint8())
+  employee.JoiningMonthDay = uint32(e.JoiningMonthDay)
+  employee.JoiningWeekDay = proto.WeekDay(e.JoiningWeekDay.Uint8())
+  employee.JoiningWeekDayShort = proto.WeekDayShort(e.JoiningWeekDayShort.Uint8())
+  employee.YearsOfService = float32(e.YearsOfService)
+  employee.Salary = uint32(e.Salary)
+  employee.LatestHikePercentage = e.LatestHikePercentage
+  employee.Ssn = e.SSN
+  employee.PhoneNumber = e.PhoneNumber
+  employee.PlaceName = e.PlaceName
+  employee.County = e.County
+  employee.City = e.City
+  employee.State = e.State
+  employee.Zip = uint32(e.Zip)
+  employee.Region = e.Region
+  employee.Username = e.Username
+  employee.Password = e.Password
+
+  return employee
+}
+
+func MapToProto(es []Employee) *proto.EmployeeList {
+
+  employeeList := &proto.EmployeeList{}
+
+  for _, employee := range es {
+    employeeList.Employees = append(employeeList.Employees, employee.MapToProto())
+  }
+
+  return employeeList
+}
+
+func MapFromProto(e *proto.Employee) Employee {
+  employee := Employee{}
+  employee.EmpID = e.EmpId
+  employee.NamePrefix = e.NamePrefix
+  employee.FirstName = e.FirstName
+  employee.MiddleInitial = e.MiddleInitial
+  employee.LastName = e.LastName
+  employee.Gender = Gender(e.Gender)
+  employee.Email = e.Email
+  employee.FathersName = e.FathersName
+  employee.MothersName = e.MothersName
+  employee.MothersMaidenName = e.MothersMaidenName
+  employee.Birthdate = e.Birthdate
+  employee.BirthTime = e.BirthTime
+  employee.WeightKg = uint16(e.WeightKg)
+  employee.JoiningDate = e.JoiningDate
+  employee.JoiningQuarter = Quarter(e.JoiningQuarter.String())
+  employee.JoiningHalf = Half(e.JoiningHalf.String())
+  employee.JoiningYear = uint16(e.JoiningYear)
+  employee.JoiningMonth = uint8(e.JoiningMonth)
+  employee.JoiningMonthName = Month(e.JoiningMonthName.String())
+  employee.JoiningMonthNameShort = MonthShort(e.JoiningMonthNameShort.String())
+  employee.JoiningMonthDay = uint8(e.JoiningMonthDay)
+  employee.JoiningWeekDay = WeekDay(e.JoiningWeekDay.String())
+  employee.JoiningWeekDayShort = WeekDayShort(e.JoiningWeekDayShort.String())
+  employee.YearsOfService = float32(e.YearsOfService)
+  employee.Salary = uint32(e.Salary)
+  employee.LatestHikePercentage = e.LatestHikePercentage
+  employee.SSN = e.Ssn
+  employee.PhoneNumber = e.PhoneNumber
+  employee.PlaceName = e.PlaceName
+  employee.County = e.County
+  employee.City = e.City
+  employee.State = e.State
+  employee.Zip = uint32(e.Zip)
+  employee.Region = e.Region
+  employee.Username = e.Username
+  employee.Password = e.Password
+  return employee
+}
+
+func MapFromProtoList(el *proto.EmployeeList) []Employee {
+
+  employees := []Employee{}
+
+  for _, pemployee := range el.GetEmployees() {
+    employees = append(employees, MapFromProto(pemployee))
+  }
+
+  return employees
+}
--- a/ex1/parsing/types.go
+++ b/ex1/parsing/types.go
@@ -0,0 +1,250 @@
+package parsing
+
+type Gender rune
+
+const (
+	Male   Gender = 'M'
+	Female Gender = 'F'
+)
+
+type Quarter string
+
+const (
+	QuarterOne   Quarter = "Q1"
+	QuarterTwo   Quarter = "Q2"
+	QuarterThree Quarter = "Q3"
+	QuarterFour  Quarter = "Q4"
+)
+
+func (x Quarter) Uint8() uint8 {
+  switch x {
+  case QuarterOne:
+    return 1
+  case QuarterTwo:
+    return 2
+  case QuarterThree:
+    return 3
+  case QuarterFour:
+    return 4
+  }
+  return 0
+}
+
+type Half string
+
+const (
+	HalfOne Half = "H1"
+	HalfTwo Half = "H2"
+)
+
+func (x Half) Uint8() uint8 {
+  switch x {
+  case HalfOne:
+    return 1
+  case HalfTwo:
+    return 2
+  }
+  return 0
+}
+
+type Month string
+
+const (
+	January   Month = "January"
+	February  Month = "February"
+	March     Month = "March"
+	April     Month = "April"
+	May       Month = "May"
+	June      Month = "June"
+	July      Month = "July"
+	August    Month = "August"
+	September Month = "September"
+	October   Month = "October"
+	November  Month = "November"
+	December  Month = "December"
+)
+
+func (x Month) Uint8() uint8 {
+	switch x {
+	case January:
+		return 1
+	case February:
+		return 2
+	case March:
+		return 3
+	case April:
+		return 4
+	case May:
+		return 5
+	case June:
+		return 6
+	case July:
+		return 7
+	case August:
+		return 8
+	case September:
+		return 9
+	case October:
+		return 10
+	case November:
+		return 11
+	case December:
+		return 12
+	default:
+		return 0
+	}
+}
+
+type MonthShort string
+
+const (
+	Jan      MonthShort = "Jan"
+	Feb      MonthShort = "Feb"
+	Mar      MonthShort = "Mar"
+	Apr      MonthShort = "Apr"
+	MayShort MonthShort = "May"
+	Jun      MonthShort = "Jun"
+	Jul      MonthShort = "Jul"
+	Aug      MonthShort = "Aug"
+	Sep      MonthShort = "Sep"
+	Oct      MonthShort = "Oct"
+	Nov      MonthShort = "Nov"
+	Dec      MonthShort = "Dec"
+)
+
+func (x MonthShort) Uint8() uint8 {
+  switch x {
+  case Jan:
+    return 1
+  case Feb:
+    return 2
+  case Mar:
+    return 3
+  case Apr:
+    return 4
+  case MayShort:
+    return 5
+  case Jun:
+    return 6
+  case Jul:
+    return 7
+  case Aug:
+    return 8
+  case Sep:
+    return 9
+  case Oct:
+    return 10
+  case Nov:
+    return 11
+  case Dec:
+    return 12
+  }
+  return 0
+}
+
+type WeekDay string
+
+const (
+	Monday    WeekDay = "Monday"
+	Tuesday   WeekDay = "Tuesday"
+	Wednesday WeekDay = "Wednesday"
+	Thursday  WeekDay = "Thursday"
+	Friday    WeekDay = "Friday"
+	Saturday  WeekDay = "Saturday"
+	Sunday    WeekDay = "Sunday"
+)
+
+func (x WeekDay) Uint8() uint8 {
+  switch x {
+  case Monday:
+    return 1
+  case Tuesday:
+    return 2
+  case Wednesday:
+    return 3
+  case Thursday:
+    return 4
+  case Friday:
+    return 5
+  case Saturday:
+    return 6
+  case Sunday:
+    return 7
+  }
+  return 0
+}
+
+type WeekDayShort string
+
+const (
+	Mon WeekDayShort = "Mon"
+	Tue WeekDayShort = "Tue"
+	Wed WeekDayShort = "Wed"
+	Thu WeekDayShort = "Thu"
+	Fri WeekDayShort = "Fri"
+	Sat WeekDayShort = "Sat"
+	Sun WeekDayShort = "Sun"
+)
+
+func (x WeekDayShort) Uint8() uint8 {
+  switch x {
+  case Mon:
+    return 1
+  case Tue:
+    return 2
+  case Wed:
+    return 3
+  case Thu:
+    return 4
+  case Fri:
+    return 5
+  case Sat:
+    return 6
+  case Sun:
+    return 7
+  }
+  return 0
+}
+
+
+type Employee struct {
+	EmpID                 uint32       `csv:"Emp ID"`
+	NamePrefix            string       `csv:"Name Prefix"`
+	FirstName             string       `csv:"First Name"`
+	MiddleInitial         string       `csv:"Middle Initial"`
+	LastName              string       `csv:"Last Name"`
+	Gender                Gender       `csv:"Gender"`
+	Email                 string       `csv:"E Mail"`
+	FathersName           string       `csv:"Father's Name"`
+	MothersName           string       `csv:"Mothers's Name"`
+	MothersMaidenName     string       `csv:"Mother's Maiden Name"`
+	Birthdate             string       `csv:"Date of Birth"`
+	BirthTime             string       `csv:"Time of Birth"`
+	WeightKg              uint16       `csv:"Weight in Kgs."`
+	JoiningDate           string       `csv:"Date of Joining"`
+	JoiningQuarter        Quarter      `csv:"Quarter of Joining"`
+	JoiningHalf           Half         `csv:"Half of Joining"`
+	JoiningYear           uint16       `csv:"Year of Joining"`
+	JoiningMonth          uint8        `csv:"Month of Joining"`
+	JoiningMonthName      Month        `csv:"Month Name of Joining"`
+	JoiningMonthNameShort MonthShort   `csv:"Short Month"`
+	JoiningMonthDay       uint8        `csv:"Day of Joining"`
+	JoiningWeekDay        WeekDay      `csv:"DOW of Joining"`
+	JoiningWeekDayShort   WeekDayShort `csv:"Short DOW"`
+	YearsOfService        float32      `csv:"Age in Company (Years)"`
+	Salary                uint32       `csv:"Salary"`
+	LatestHikePercentage  string       `csv:"Last % Hike"`
+	SSN                   string       `csv:"SSN"`
+	PhoneNumber           string       `csv:"Phone No."`
+	PlaceName             string       `csv:"Place Name"`
+	County                string       `csv:"County"`
+	City                  string       `csv:"City"`
+	State                 string       `csv:"State"`
+	Zip                   uint32       `csv:"Zip"`
+	Region                string       `csv:"Region"`
+	Username              string       `csv:"User Name"`
+	Password              string       `csv:"Password"`
+	// Empty slot
+	// Empty slot
+	// Empty slot
+}
--- a/ex1/proto/Records.pb.go
+++ b/ex1/proto/Records.pb.go
--- a/ex1/proto/io.go
+++ b/ex1/proto/io.go
@@ -0,0 +1,51 @@
+package proto
+
+import (
+  "os"
+  "google.golang.org/protobuf/proto"
+  // "git.cems.dev/cdricms/bdooc/parsing"
+)
+
+func SaveToFile(data []uint8, filename string) error {
+  EmployeeList := &EmployeeList{}
+  err := proto.Unmarshal(data, EmployeeList)
+  if err != nil {
+    return err
+  }
+  return EmployeeList.SaveToFile(filename)
+}
+
+func (el *EmployeeList) SaveToFile(filename string) error {
+  data, err := proto.Marshal(el)
+  if err != nil {
+    return err
+  }
+  file, err := os.Create(filename)
+  if err != nil {
+    return err
+  }
+  defer file.Close()
+  _, err = file.Write(data)
+  if err != nil {
+    return err
+  }
+  return nil
+}
+
+func LoadFromFile(filename string) (*EmployeeList, error) {
+  file, err := os.Open(filename)
+  if err != nil {
+    return nil, err
+  }
+  defer file.Close()
+  data, err := os.ReadFile(filename)
+  if err != nil {
+    return nil, err
+  }
+  el := &EmployeeList{}
+  err = proto.Unmarshal(data, el)
+  if err != nil {
+    return nil, err
+  }
+  return el, nil
+}
--- a/ex1/proto/queries.go
+++ b/ex1/proto/queries.go
@@ -0,0 +1,255 @@
+package proto
+
+import (
+	"fmt"
+	"math"
+	"reflect"
+	"strings"
+)
+
+func GetMax[T float64 | float32 | int | uint | int8 | uint8 | int16 | uint16 | int32 | uint32 | int64 | uint64](a, b T) T {
+  if a > b {
+    return a
+  }
+  return b
+}
+
+func GetMin[T float64 | float32 | int | uint | int8 | uint8 | int16 | uint16 | int32 | uint32 | int64 | uint64](a, b T) T {
+  if a < b {
+    return a
+  }
+  return b
+}
+
+
+type EmployeeField string
+
+const (
+	FieldEmpID                 EmployeeField = "EmpId"
+	FieldNamePrefix                          = "NamePrefix"
+	FieldFirstName                           = "FirstName"
+	FieldMiddleInitial                       = "MiddleInitial"
+	FieldLastName                            = "LastName"
+	FieldGender                              = "Gender"
+	FieldEmail                               = "Email"
+	FieldFathersName                         = "FathersName"
+	FieldMothersName                         = "MothersName"
+	FieldMothersMaidenName                   = "MothersMaidenName"
+	FieldBirthdate                           = "Birthdate"
+	FieldBirthTime                           = "BirthTime"
+	FieldWeightKg                            = "WeightKg"
+	FieldJoiningDate                         = "JoiningDate"
+	FieldJoiningQuarter                      = "JoiningQuarter"
+	FieldJoiningHalf                         = "JoiningHalf"
+	FieldJoiningYear                         = "JoiningYear"
+	FieldJoiningMonth                        = "JoiningMonth"
+	FieldJoiningMonthName                    = "JoiningMonthName"
+	FieldJoiningMonthNameShort               = "JoiningMonthNameShort"
+	FieldJoiningMonthDay                     = "JoiningMonthDay"
+	FieldJoiningWeekDay                      = "JoiningWeekDay"
+	FieldJoiningWeekDayShort                 = "JoiningWeekDayShort"
+	FieldYearsOfService                      = "YearsOfService"
+	FieldSalary                              = "Salary"
+	FieldLatestHikePercentage                = "LatestHikePercentage"
+	FieldSsn                                 = "Ssn"
+	FieldPhoneNumber                         = "PhoneNumber"
+	FieldPlaceName                           = "PlaceName"
+	FieldCounty                              = "County"
+	FieldCity                                = "City"
+	FieldState                               = "State"
+	FieldZip                                 = "Zip"
+	FieldRegion                              = "Region"
+	FieldUsername                            = "Username"
+	FieldPassword                            = "Password"
+)
+
+func SnakeCaseToPascalCase(s string) string {
+  words := strings.Split(s, "_")
+  for i, word := range words {
+    words[i] = strings.ToUpper(word[0:1]) + strings.ToLower(word[1:])
+  }
+  return strings.Join(words, "")
+}
+
+
+func (e *Employee) Copy() Employee {
+	return Employee{
+		EmpId:                 e.GetEmpId(),
+		NamePrefix:            e.GetNamePrefix(),
+		FirstName:             e.GetFirstName(),
+		MiddleInitial:         e.GetMiddleInitial(),
+		LastName:              e.GetLastName(),
+		Gender:                e.GetGender(),
+		Email:                 e.GetEmail(),
+		FathersName:           e.GetFathersName(),
+		MothersName:           e.GetMothersName(),
+		MothersMaidenName:     e.GetMothersMaidenName(),
+		Birthdate:             e.GetBirthdate(),
+		BirthTime:             e.GetBirthTime(),
+		WeightKg:              e.GetWeightKg(),
+		JoiningDate:           e.GetJoiningDate(),
+		JoiningQuarter:        e.GetJoiningQuarter(),
+		JoiningHalf:           e.GetJoiningHalf(),
+		JoiningYear:           e.GetJoiningYear(),
+		JoiningMonth:          e.GetJoiningMonth(),
+		JoiningMonthName:      e.GetJoiningMonthName(),
+		JoiningMonthNameShort: e.GetJoiningMonthNameShort(),
+		JoiningMonthDay:       e.GetJoiningMonthDay(),
+		JoiningWeekDay:        e.GetJoiningWeekDay(),
+		JoiningWeekDayShort:   e.GetJoiningWeekDayShort(),
+		YearsOfService:        e.GetYearsOfService(),
+		Salary:                e.GetSalary(),
+		LatestHikePercentage:  e.GetLatestHikePercentage(),
+		Ssn:                   e.GetSsn(),
+		PhoneNumber:           e.GetPhoneNumber(),
+		PlaceName:             e.GetPlaceName(),
+		County:                e.GetCounty(),
+		City:                  e.GetCity(),
+		State:                 e.GetState(),
+		Zip:                   e.GetZip(),
+		Region:                e.GetRegion(),
+		Username:              e.GetUsername(),
+		Password:              e.GetPassword(),
+	}
+}
+
+func (el *EmployeeList) QueryEmployeesByColumn(column EmployeeField, query string) ([]*Employee, error) {
+	employees := make([]*Employee, 0)
+
+	for _, employee := range el.GetEmployees() {
+		value := reflect.ValueOf(employee).Elem().FieldByName(string(column))
+		if fmt.Sprintf("%v", value) == query {
+			employees = append(employees, employee)
+		}
+	}
+
+	return employees, nil
+}
+
+type Groups map[string][]*Employee
+
+func (el *EmployeeList) GroupByColumn(column EmployeeField) Groups {
+
+	groups := make(map[string][]*Employee)
+	for _, employee := range el.GetEmployees() {
+		value := reflect.ValueOf(employee).Elem().FieldByName(string(column))
+		formattedValue := fmt.Sprintf("%v", value)
+		groups[formattedValue] = append(groups[formattedValue], employee)
+	}
+
+	return groups
+}
+
+type FilterFunction func(*Employee) bool
+
+func (grps Groups) HavingByColumn(cb FilterFunction) Groups {
+
+	newGrps := make(map[string][]*Employee)
+
+	for groupName, group := range grps {
+		for _, employee := range group {
+			if cb(employee) {
+				newGrps[groupName] = append(newGrps[groupName], employee)
+			}
+		}
+	}
+
+	return newGrps
+}
+
+func ForEachGroup[T any](grps Groups, cb func(ep EmployeePList) T) map[string]T {
+  g := make(map[string]T)
+  for groupName, group := range grps {
+    g[groupName] = cb(group)
+  }
+
+  return g
+} 
+
+func AggregateByColumn[T any](el *EmployeeList, column EmployeeField, cb func(ep EmployeePList) T) map[string]T {
+
+  grps := el.GroupByColumn(column)
+  res := ForEachGroup(grps, cb) 
+
+  return res
+}
+
+type EmployeePList []*Employee
+
+func Sum(ep EmployeePList, column EmployeeField) float64 {
+	sum := 0.0
+
+	_, fieldFound := reflect.TypeOf(Employee{}).FieldByName(string(column))
+	if !fieldFound {
+		return sum
+	}
+
+	for _, employee := range ep {
+    value := reflect.ValueOf(employee).Elem().FieldByName(string(column))
+    switch value.Kind() {
+    case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+      sum += float64(value.Int())
+    case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+      sum += float64(value.Uint())
+    case reflect.Float64, reflect.Float32:
+      sum += value.Float()
+    default:
+      return sum
+    }
+	}
+  return sum 
+}
+
+func Average(ep EmployeePList, column EmployeeField) float64 {
+	return Sum(ep, column) / float64(len(ep))
+}
+
+func Max(ep EmployeePList, column EmployeeField) float64 {
+  max := 0.0
+  
+	_, fieldFound := reflect.TypeOf(Employee{}).FieldByName(string(column))
+	if !fieldFound {
+		return max
+	}
+
+	for _, employee := range ep {
+    value := reflect.ValueOf(employee).Elem().FieldByName(string(column))
+    switch value.Kind() {
+    case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+      max = GetMax(max, float64(value.Int()))
+    case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+      max = GetMax(max, float64(value.Uint()))
+    case reflect.Float64, reflect.Float32:
+      max = GetMax(max, value.Float())
+    default:
+      return max
+    }
+	}
+
+  return max
+}
+
+func Min(ep EmployeePList, column EmployeeField) float64 {
+  min := math.MaxFloat64
+  
+  _, fieldFound := reflect.TypeOf(Employee{}).FieldByName(string(column))
+  if !fieldFound {
+    return min
+  }
+
+	for _, employee := range ep {
+    value := reflect.ValueOf(employee).Elem().FieldByName(string(column))
+    switch value.Kind() {
+    case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+      min = GetMin(min, float64(value.Int()))
+    case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+      min = GetMin(min, float64(value.Uint()))
+    case reflect.Float64, reflect.Float32:
+      min = GetMin(min, value.Float())
+    default:
+      return min
+    }
+	}
+
+  return min
+}
--- a/ex1/wails.json
+++ b/ex1/wails.json
@@ -0,0 +1,13 @@
+{
+  "$schema": "https://wails.io/schemas/config.v2.json",
+  "name": "bdooc-t",
+  "outputfilename": "bdooc-t",
+  "frontend:install": "npm install",
+  "frontend:build": "npm run build",
+  "frontend:dev:watcher": "npm run dev",
+  "frontend:dev:serverUrl": "auto",
+  "author": {
+    "name": "cdricms",
+    "email": "36056008+cdricms@users.noreply.github.com"
+  }
+}
				`@@ -0,0 +1 @@`
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