Blogs listing + Categories

backend/api/blogs/blogs.go

@@ -10,11 +10,17 @@ import (
 )
 
 func HandleGetBlogs(w http.ResponseWriter, r *http.Request) {
+	category := r.URL.Query().Get("category")
 	var blog []models.Blog
-	count, err := core.DB.NewSelect().
+	q := core.DB.NewSelect().
 		Model(&blog).
-		Relation("Author").
-		ScanAndCount(context.Background())
+		Relation("Author")
+
+	if len(category) > 0 {
+		q.Where("category = ?", category)
+	}
+
+	count, err := q.ScanAndCount(context.Background())
 	if err != nil {
 		core.JSONError{
 			Status:  core.Error,

backend/api/blogs/categories.go

@@ -0,0 +1,41 @@
+package blogs
+
+import (
+	"context"
+	"net/http"
+
+	"fr.latosa-escrima/core"
+	"fr.latosa-escrima/core/models"
+)
+
+func HandleCategories(w http.ResponseWriter, r *http.Request) {
+	var categories []struct {
+		Category string `json:"category"`
+		Count    int    `json:"count"`
+	}
+	err := core.DB.NewSelect().
+		Model((*models.Blog)(nil)).
+		Column("category").
+		ColumnExpr("COUNT(*) AS count").
+		Where("category IS NOT NULL AND category != ''").
+		Group("category").
+		// Count the occurrences of each distinct category
+		Having("COUNT(category) > 0").
+		// Sort the results by the count in descending order
+		Order("count DESC").
+		Scan(context.Background(), &categories)
+
+	if err != nil {
+		core.JSONError{
+			Status:  core.Error,
+			Message: err.Error(),
+		}.Respond(w, http.StatusInternalServerError)
+		return
+	}
+
+	core.JSONSuccess{
+		Status:  core.Success,
+		Message: "Categories found.",
+		Data:    categories,
+	}.Respond(w, http.StatusOK)
+}