Add ability to delete posts

internal/database/handlers.go

@@ -242,14 +242,18 @@ func DeleteThread(db Queryer, threadId int) error {
 			return err
 		}
 
-		if err := os.Remove(path.Join(util.POST_MEDIA_FULL_PATH, pruneMediaFullPath)); err != nil {
-			if !errors.Is(err, fs.ErrNotExist) {
-				return err
+		if pruneMediaFullPath != "" {
+			if err := os.Remove(path.Join(util.POST_MEDIA_FULL_PATH, pruneMediaFullPath)); err != nil {
+				if !errors.Is(err, fs.ErrNotExist) {
+					return err
+				}
 			}
 		}
-		if err := os.Remove(path.Join(util.POST_MEDIA_THUMB_PATH, pruneMediaThumbPath)); err != nil {
-			if !errors.Is(err, fs.ErrNotExist) {
-				return err
+		if pruneMediaThumbPath != "" {
+			if err := os.Remove(path.Join(util.POST_MEDIA_THUMB_PATH, pruneMediaThumbPath)); err != nil {
+				if !errors.Is(err, fs.ErrNotExist) {
+					return err
+				}
 			}
 		}
 	}
@@ -265,6 +269,48 @@ func DeleteThread(db Queryer, threadId int) error {
 	return nil
 }
 
+func DeletePost(db *sql.DB, postId int) error {
+	// cleanup images
+	row := db.QueryRow(`
+		SELECT media_path, thumb_path
+		FROM posts
+		WHERE id = ?`, postId)
+
+	var (
+		pruneMediaThumbPath string
+		pruneMediaFullPath  string
+	)
+	if err := row.Scan(&pruneMediaFullPath, &pruneMediaThumbPath); err != nil {
+		return err
+	}
+
+	if pruneMediaFullPath != "" {
+		if err := os.Remove(path.Join(util.POST_MEDIA_FULL_PATH, pruneMediaFullPath)); err != nil {
+			if !errors.Is(err, fs.ErrNotExist) {
+				return err
+			}
+		}
+	}
+
+	if pruneMediaThumbPath != "" {
+		if err := os.Remove(path.Join(util.POST_MEDIA_THUMB_PATH, pruneMediaThumbPath)); err != nil {
+			if !errors.Is(err, fs.ErrNotExist) {
+				return err
+			}
+		}
+	}
+
+	// delete post
+	_, err := db.Exec(`
+		DELETE FROM posts 
+		WHERE id = ?`, postId)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func GetAdmin(db *sql.DB, username string) (Admin, error) {
 	row := db.QueryRow(`
 		SELECT username, password

internal/util/posts.go

@@ -30,7 +30,7 @@ const MAX_THREAD_COUNT = 50
 const MAX_BODY_LEN = 3000
 const MAX_SUBJECT_LEN = 50
 
-var SUPPORTED_IMAGE_MIME_TYPES = []string{"image/jpeg", "image/png", "image/gif", "image/webp"}
+var SUPPORTED_IMAGE_MIME_TYPES = []string{"image/jpeg", "image/png", "image/gif"}
 var SUPPORTED_VIDEO_MIME_TYPES = []string{"video/webm", "video/mp4", "video/ogg"}
 
 type PostMediaType int64