Exemplo n.º 1
0
func getApiPostAuthorsHandler(w http.ResponseWriter,
	r *http.Request,
	params map[string]string) {
	userName := authentication.GetUserName(r)
	if userName != "" {
		post_id := params["id"]
		postId, err := strconv.ParseInt(post_id, 10, 64)
		if err != nil || postId < 1 {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		var authors []structure.User
		authors, err = database.RetrieveAuthors(postId)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		json, err := json.Marshal(usersToJson(authors))
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		w.Header().Set("Content-Type", "application/json")
		w.Write(json)
		return
	} else {
		http.Error(w, "Not logged in!", http.StatusInternalServerError)
		return
	}
}
Exemplo n.º 2
0
// API function to add and remove post authors
func putApiPostAuthorsHandler(w http.ResponseWriter,
	r *http.Request,
	params map[string]string) {
	userName := authentication.GetUserName(r)
	if userName != "" {
		userId, err := getUserId(userName)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		userRole, err := getUserRole(userName)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		post_id := params["id"]
		postId, err := strconv.ParseInt(post_id, 10, 64)
		if err != nil || postId < 1 {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		// Check the post for existence (there's no foreign key constraint)
		post, err := database.RetrievePostById(postId)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		// Allow this action only to the main author
		if post.Author.Id != userId && userRole != 4 {
			http.Error(w, "Not your post", http.StatusInternalServerError)
			return
		}
		decoder := json.NewDecoder(r.Body)
		var json JsonChangePostAuthors
		err = decoder.Decode(&json)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		delete_author_ids := json.Delete
		add_author_ids := json.Add
		var existing_authors []structure.User
		existing_authors, err = database.RetrieveAuthors(postId)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		// Delete users
		for _, author_id := range delete_author_ids {
			err = database.DeletePostAuthor(postId, author_id)
			// Don't even check for errors
		}
		// Filter out ones who is already listed as author
		for _, author_id := range add_author_ids {
			author_exists := false
			for _, author := range existing_authors {
				if author.Id == author_id {
					author_exists = true
					break
				}
			}
			if !author_exists {
				_, err = database.RetrieveUser(author_id)
				if err == nil { // Verify that this user exists in DB
					// and save him
					_ = database.InsertPostAuthor(int(postId), author_id)
				}
			}
		}
		w.WriteHeader(http.StatusOK)
		w.Write([]byte("Authors added!"))
		return
	} else {
		http.Error(w, "Not logged in!", http.StatusInternalServerError)
		return
	}
}