v2.0.6: Fix addWords handler - add user_id and improve error handling

- Added user_id to words insertion (was missing, causing 500 errors)
- Fixed default dictionary query (removed incorrect id=0 condition)
- Added dictionary ownership validation before inserting words
- Added comprehensive logging for debugging addWords operations

play-life-backend/main.go

@@ -861,12 +861,16 @@ func (a *App) addWordsHandler(w http.ResponseWriter, r *http.Request) {
 
 	var req WordsRequest
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		log.Printf("Error decoding addWords request: %v", err)
 		sendErrorWithCORS(w, err.Error(), http.StatusBadRequest)
 		return
 	}
 
+	log.Printf("addWords: user_id=%d, words_count=%d", userID, len(req.Words))
+
 	tx, err := a.DB.Begin()
 	if err != nil {
+		log.Printf("Error beginning transaction: %v", err)
 		sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -875,52 +879,84 @@ func (a *App) addWordsHandler(w http.ResponseWriter, r *http.Request) {
 	// Create default dictionary for user if needed
 	var defaultDictID int
 	err = tx.QueryRow(`
-		SELECT id FROM dictionaries WHERE user_id = $1 AND id = 0
-		UNION ALL
 		SELECT id FROM dictionaries WHERE user_id = $1 ORDER BY id LIMIT 1
 	`, userID).Scan(&defaultDictID)
 	if err == sql.ErrNoRows {
 		// Create default dictionary for user
+		log.Printf("Creating default dictionary for user_id=%d", userID)
 		err = tx.QueryRow(`
 			INSERT INTO dictionaries (name, user_id) VALUES ('Все слова', $1) RETURNING id
 		`, userID).Scan(&defaultDictID)
 		if err != nil {
+			log.Printf("Error creating default dictionary: %v", err)
 			sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
+		log.Printf("Created default dictionary id=%d for user_id=%d", defaultDictID, userID)
+	} else if err != nil {
+		log.Printf("Error finding default dictionary: %v", err)
+		sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
+		return
+	} else {
+		log.Printf("Using default dictionary id=%d for user_id=%d", defaultDictID, userID)
 	}
 
 	stmt, err := tx.Prepare(`
-		INSERT INTO words (name, translation, description, dictionary_id)
-		VALUES ($1, $2, $3, COALESCE($4, $5))
+		INSERT INTO words (name, translation, description, dictionary_id, user_id)
+		VALUES ($1, $2, $3, COALESCE($4, $5), $6)
 		RETURNING id
 	`)
 	if err != nil {
+		log.Printf("Error preparing insert statement: %v", err)
 		sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	defer stmt.Close()
 
 	var addedCount int
-	for _, wordReq := range req.Words {
+	for i, wordReq := range req.Words {
 		var id int
 		dictionaryID := defaultDictID
 		if wordReq.DictionaryID != nil {
 			dictionaryID = *wordReq.DictionaryID
+			// Проверяем, что словарь принадлежит пользователю
+			var dictUserID int
+			err := tx.QueryRow(`
+				SELECT user_id FROM dictionaries WHERE id = $1
+			`, dictionaryID).Scan(&dictUserID)
+			if err == sql.ErrNoRows {
+				log.Printf("Dictionary %d not found for word %d", dictionaryID, i)
+				sendErrorWithCORS(w, fmt.Sprintf("Dictionary %d not found", dictionaryID), http.StatusBadRequest)
+				return
+			} else if err != nil {
+				log.Printf("Error checking dictionary ownership: %v", err)
+				sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+			if dictUserID != userID {
+				log.Printf("Dictionary %d belongs to user %d, but request from user %d", dictionaryID, dictUserID, userID)
+				sendErrorWithCORS(w, fmt.Sprintf("Dictionary %d does not belong to user", dictionaryID), http.StatusForbidden)
+				return
+			}
 		}
-		err := stmt.QueryRow(wordReq.Name, wordReq.Translation, wordReq.Description, wordReq.DictionaryID, dictionaryID).Scan(&id)
+		err := stmt.QueryRow(wordReq.Name, wordReq.Translation, wordReq.Description, wordReq.DictionaryID, dictionaryID, userID).Scan(&id)
 		if err != nil {
+			log.Printf("Error inserting word %d (name='%s', dict_id=%d, user_id=%d): %v", i, wordReq.Name, dictionaryID, userID, err)
 			sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
 		addedCount++
+		log.Printf("Successfully added word id=%d: name='%s', dict_id=%d", id, wordReq.Name, dictionaryID)
 	}
 
 	if err := tx.Commit(); err != nil {
+		log.Printf("Error committing transaction: %v", err)
 		sendErrorWithCORS(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 
+	log.Printf("Successfully added %d words for user_id=%d", addedCount, userID)
+
 	setCORSHeaders(w)
 	w.Header().Set("Content-Type", "application/json")
 	json.NewEncoder(w).Encode(map[string]interface{}{