better hierarchy and better way to make a CRUD

handler/http/handler.go

@@ -0,0 +1,98 @@
+package handler
+
+import (
+	"blog/driver"
+	models "blog/models"
+	repository "blog/repository"
+	post "blog/repository/post"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi"
+)
+
+// NewPostHandler ...
+func NewPostHandler(db *driver.DB) *Post {
+	return &Post{
+		repo: post.NewSQLPostRepo(db.SQL),
+	}
+}
+
+// Post ...
+type Post struct {
+	repo repository.PostRepo
+}
+
+// Fetch ...
+func (p *Post) Fetch(w http.ResponseWriter, r *http.Request) {
+	payload, _ := p.repo.Fetch(r.Context(), 25)
+
+	respondwithJSON(w, http.StatusOK, payload)
+}
+
+// Create a new post
+func (p *Post) Create(w http.ResponseWriter, r *http.Request) {
+	post := models.Post{}
+	json.NewDecoder(r.Body).Decode(&post)
+
+	newID, err := p.repo.Create(r.Context(), &post)
+	fmt.Println(newID)
+	if err != nil {
+		respondWithError(w, http.StatusInternalServerError, "Server Error")
+	}
+	respondwithJSON(w, http.StatusCreated, map[string]string{"message": "Successfully Created"})
+}
+
+// Update a post by id
+func (p *Post) Update(w http.ResponseWriter, r *http.Request) {
+	id, _ := strconv.Atoi(chi.URLParam(r, "id"))
+	data := models.Post{ID: int(id)}
+	json.NewDecoder(r.Body).Decode(&data)
+	payload, err := p.repo.Update(r.Context(), &data)
+
+	if err != nil {
+		respondWithError(w, http.StatusInternalServerError, "Server Error")
+	}
+
+	respondwithJSON(w, http.StatusOK, payload)
+}
+
+// GetByID returns a post details
+func (p *Post) GetByID(w http.ResponseWriter, r *http.Request) {
+	id, _ := strconv.Atoi(chi.URLParam(r, "id"))
+	payload, err := p.repo.GetByID(r.Context(), int64(id))
+
+	if err != nil {
+		respondWithError(w, http.StatusNoContent, "Content not found")
+	}
+
+	respondwithJSON(w, http.StatusOK, payload)
+}
+
+// Delete a post
+func (p *Post) Delete(w http.ResponseWriter, r *http.Request) {
+	id, _ := strconv.Atoi(chi.URLParam(r, "id"))
+	_, err := p.repo.Delete(r.Context(), int64(id))
+
+	if err != nil {
+		respondWithError(w, http.StatusInternalServerError, "Server Error")
+	}
+
+	respondwithJSON(w, http.StatusMovedPermanently, map[string]string{"message": "Delete Successfully"})
+}
+
+// respondwithJSON write json response format
+func respondwithJSON(w http.ResponseWriter, code int, payload interface{}) {
+	response, _ := json.Marshal(payload)
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	w.Write(response)
+}
+
+// respondwithError return error message
+func respondWithError(w http.ResponseWriter, code int, msg string) {
+	respondwithJSON(w, code, map[string]string{"message": msg})
+}