Reorganized API + added db migrations

Read the README file for more informations

backend/api/media/verify.go

@@ -0,0 +1,62 @@
+package media
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"path/filepath"
+
+	"fr.latosa-escrima/api/core"
+	"fr.latosa-escrima/utils"
+)
+
+const MAX_SIZE_BYTES = 10 * 1024 * 1024
+
+type FileArgs struct {
+	Name     string `json:"name"`
+	Type     string `json:"type"`
+	SizeByte int64  `json:"size"`
+}
+
+func HandleVerify(w http.ResponseWriter, r *http.Request) {
+	body, err := io.ReadAll(r.Body)
+	if err != nil {
+		core.JSONError{
+			Status:  core.Error,
+			Message: err.Error(),
+		}.Respond(w, http.StatusInternalServerError)
+		return
+	}
+
+	var file FileArgs
+	err = json.Unmarshal(body, &file)
+	if err != nil {
+		core.JSONError{
+			Status:  core.Error,
+			Message: err.Error(),
+		}.Respond(w, http.StatusInternalServerError)
+		return
+	}
+
+	if utils.DoesPathExist(filepath.Join("media", file.Name)) {
+		core.JSONError{
+			Status:  core.Error,
+			Message: "File already exists.",
+		}.Respond(w, http.StatusInternalServerError)
+		return
+	}
+
+	if file.SizeByte > MAX_SIZE_BYTES {
+		core.JSONError{
+			Status:  core.Error,
+			Message: "File is too big.",
+		}.Respond(w, http.StatusRequestEntityTooLarge)
+		return
+	}
+
+	core.JSONSuccess{
+		Status:  core.Success,
+		Message: "File can be uploaded.",
+	}.Respond(w, http.StatusOK)
+
+}