[Fix] 낱말 수정 api에서 userCategoryId만 사용하도록 수정

src/words/controllers/words.controller.js

@@ -97,7 +97,7 @@ export class WordsController {
       const updateDto = new UpdateWordDto({
         word: req.body.word,
         imageUrl: req.body.imageUrl,
-        categoryId: req.body.categoryId
+        userCategoryId: req.body.categoryId
       });
 
       // 유효성 검증
@@ -108,7 +108,7 @@ export class WordsController {
         cardId,
         updateDto.word,
         updateDto.imageUrl,
-        updateDto.categoryId
+        updateDto.userCategoryId
       );
 
       return res.success({ word: updatedWord }, '낱말 카드 수정 성공');

src/words/dto/words.dto.js

@@ -71,14 +71,14 @@ export class UpdateFavoriteDto {
  * PATCH /api/words/:cardId - Update Word Request DTO
  */
 export class UpdateWordDto {
-  constructor({ word, imageUrl, categoryId }) {
+  constructor({ word, imageUrl, userCategoryId }) {
     this.word = word;
     this.imageUrl = imageUrl;
-    this.categoryId = categoryId ? String(categoryId) : null;
+    this.userCategoryId = userCategoryId ? String(userCategoryId) : null;
   }
 
   validate() {
-    if (!this.word && !this.imageUrl && !this.categoryId) {
+    if (!this.word && !this.imageUrl && !this.userCategoryId) {
       throw new Error('word, imageUrl, categoryId 중 하나는 필수입니다');
     }
   }

src/words/repositories/words.repository.js

@@ -301,18 +301,20 @@ export class WordsRepository {
   }
 
   /**
-   * UserWord 업데이트 (customWord, customImageUrl, categoryId)
-   * @param {string} userWordId - UserWord.id
-   * @param {string|null} customWord
-   * @param {string|null} customImageUrl
-   * @param {string|null} categoryId
-   * @returns {Promise<Object>}
-   */
-  async updateUserWord(userWordId, customWord, customImageUrl, categoryId) {
+  * UserWord 업데이트 (customWord, customImageUrl, userCategoryId, displayOrder)
+  * @param {string} userWordId - UserWord.id
+  * @param {string|null} customWord
+  * @param {string|null} customImageUrl
+  * @param {string|null} userCategoryId
+  * @param {number|undefined} displayOrder
+  * @returns {Promise<Object>}
+  */
+  async updateUserWord(userWordId, customWord, customImageUrl, userCategoryId, displayOrder) {
     const data = {};
     if (customWord !== undefined) data.customWord = customWord;
     if (customImageUrl !== undefined) data.customImageUrl = customImageUrl;
-    if (categoryId !== undefined && categoryId !== null) data.categoryId = categoryId;
+    if (userCategoryId !== undefined && userCategoryId !== null) data.userCategoryId = userCategoryId;
+    if (displayOrder !== undefined) data.displayOrder = displayOrder;
 
     return await prisma.userWord.update({
       where: { id: userWordId },

src/words/routes/words.route.js

@@ -80,8 +80,6 @@ router.get('/', optionalAuthenticate, wordsController.getWords.bind(wordsControl
  *     summary: 개인 낱말 카드 추가
  *     description: 사용자가 직접 낱말 카드를 추가합니다. NLP로 품사를 자동 분석합니다.
  *     tags: [Words]
- *     security:
- *       - bearerAuth: []
  *     requestBody:
  *       required: true
  *       content:

src/words/services/words.service.js

@@ -224,13 +224,31 @@ export class WordsService {
    * @param {string|undefined} categoryId - 변경할 카테고리 ID
    * @returns {Promise<WordCardResponseDto>}
    */
-  async updateWord(userId, cardId, word, imageUrl, categoryId) {
+  async updateWord(userId, cardId, word, imageUrl, userCategoryId) {
     // 무조건 UserWord만 수정: 기본 Word 복사/생성 로직 제거
     const userWord = await wordsRepository.findUserWordById(cardId);
     if (!userWord) {
       throw new Error('존재하지 않는 UserWord입니다');
     }
-    const updatedUserWord = await wordsRepository.updateUserWord(cardId, word, imageUrl, categoryId);
+
+    let displayOrder = undefined;
+    // 카테고리 변경 시 displayOrder 맨 뒤로 이동 및 기존 카테고리 재정렬
+    if (userCategoryId && userWord.userCategoryId !== userCategoryId) {
+      // 1. 이동될 카테고리 맨 뒤로
+      displayOrder = await this.getNextDisplayOrder(userId, null, userCategoryId);
+
+      // 2. 기존 카테고리 displayOrder 재정렬
+      const prevCategoryId = userWord.userCategoryId;
+      if (prevCategoryId) {
+        const prevWords = await wordsRepository.findUserWords(userId, prevCategoryId, false, false);
+        // 이동된 단어 제외
+        const filtered = prevWords.filter(w => w.id !== cardId);
+        const updates = filtered.map((w, idx) => ({ userWordId: w.id, displayOrder: idx }));
+        await wordsRepository.bulkUpdateDisplayOrders(updates);
+      }
+    }
+
+    const updatedUserWord = await wordsRepository.updateUserWord(cardId, word, imageUrl, userCategoryId, displayOrder);
     return new WordCardResponseDto({
       cardId: updatedUserWord.id,
       categoryId: updatedUserWord.userCategoryId,