refac: separated api content into sub-packages & renamed usecases

api/controllers/post/post.go

@@ -0,0 +1,99 @@
+package post
+
+import (
+	"GoCMS/api"
+	"GoCMS/api/controllers/auth"
+	"GoCMS/domain/post"
+	"GoCMS/useCases"
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+)
+
+type PostPost struct {
+	Title string `json:"title" validate:"required,min=3,max=50"`
+	Body  string `json:"body" validate:"required,max=10000"`
+}
+
+const IdUint32ErrorMessage = "The server expects the ID to be in the format of an unsigned 32-bit integer (uint32)."
+
+func getPost(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseUint(chi.URLParam(r, "id"), 10, 32)
+	if err != nil {
+		http.Error(w, IdUint32ErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	localPost, err := api.Container.GetPostUseCase.GetPost(uint32(id))
+	if err != nil || !localPost.IsOnline {
+		http.Error(w, "The requested resource, identified by its unique ID, could not be found on the server.", http.StatusNotFound)
+		return
+	}
+
+	postJson, _ := json.Marshal(localPost)
+	_, _ = w.Write(postJson)
+}
+
+func postPost(w http.ResponseWriter, r *http.Request) {
+	var localPost PostPost
+	err := json.NewDecoder(r.Body).Decode(&localPost)
+	if err != nil {
+		http.Error(w, auth.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	err = api.Validate.Struct(localPost)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	createdPost, err := api.Container.CreatePostUseCase.CreatePost(useCases.CreatePostCommand{
+		Title: localPost.Title,
+		Body:  localPost.Body,
+	})
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	postJson, _ := json.Marshal(createdPost)
+
+	_, _ = w.Write(postJson)
+}
+
+func listPosts(w http.ResponseWriter, _ *http.Request) {
+	posts := api.Container.ListPostsUseCase.ListPosts()
+	onlinePosts := make([]post.Post, 0)
+	for _, localPost := range posts {
+		if localPost.IsOnline {
+			onlinePosts = append(onlinePosts, localPost)
+		}
+	}
+	postsJson, _ := json.Marshal(onlinePosts)
+	_, _ = w.Write(postsJson)
+}
+
+func deletePost(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseUint(chi.URLParam(r, "id"), 10, 32)
+	if err != nil {
+		http.Error(w, IdUint32ErrorMessage, http.StatusBadRequest)
+	}
+
+	err = api.Container.DeletePostUseCase.DeletePost(uint32(id))
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusNotFound)
+	}
+
+	_, _ = w.Write([]byte("post deleted"))
+}
+
+func NewPostRouter() http.Handler {
+	r := chi.NewRouter()
+	r.Get("/{id}", getPost)
+	r.Post("/", postPost)
+	r.Get("/", listPosts)
+	r.Delete("/{id}", deletePost)
+	return r
+}