feat(回收站): 实现画板和元素的回收站功能

添加回收站相关API接口和前端界面，支持查看、恢复和永久删除功能
- 后端新增查询回收站、恢复和永久删除接口
- 前端添加回收站面板和相关操作按钮
- 修改删除提示信息为"移至回收站"

Author: mygithubname

backend/src/main/java/com/easydraw/controller/BoardController.java

@@ -68,6 +68,25 @@ public Map<String, Object> deleteBoard(@PathVariable String id) {
         return ResponseUtils.buildSuccessResponse(null);
     }
 
+    @GetMapping("/trash")
+    public Map<String, Object> getTrashBoards() {
+        UUID creatorId = this.getSecurityUUID();
+        List<BoardDto> boards = boardService.getTrashBoards(creatorId);
+        return ResponseUtils.buildSuccessResponse(boards);
+    }
+
+    @PostMapping("/{id}/restore")
+    public Map<String, Object> restoreBoard(@PathVariable String id) {
+        BoardDto boardDto = boardService.restoreBoard(id);
+        return ResponseUtils.buildSuccessResponse(boardDto);
+    }
+
+    @DeleteMapping("/{id}/permanent")
+    public Map<String, Object> permanentDeleteBoard(@PathVariable String id) {
+        boardService.permanentDeleteBoard(id);
+        return ResponseUtils.buildSuccessResponse(null);
+    }
+
     // 内部类，用于接收请求参数
     public static class BoardRequest {
         private String name;

backend/src/main/java/com/easydraw/repository/BoardRepository.java

@@ -14,4 +14,8 @@ public interface BoardRepository extends JpaRepository<Board, UUID> {
 
     Board findByIdAndIsDeletedFalse(UUID id);
 
+    List<Board> findByCreatorIdAndIsDeletedTrue(UUID creatorId);
+
+    Board findByIdAndIsDeletedTrue(UUID id);
+
 }

backend/src/main/java/com/easydraw/repository/ElementRepository.java

@@ -14,4 +14,8 @@ public interface ElementRepository extends JpaRepository<Element, UUID> {
 
     Element findByIdAndBoardIdAndIsDeletedFalse(UUID id, UUID boardId);
 
+    List<Element> findByBoardIdAndIsDeletedTrue(UUID boardId);
+
+    List<Element> findByBoardId(UUID boardId);
+
 }

backend/src/main/java/com/easydraw/service/BoardService.java

@@ -127,4 +127,62 @@ public void deleteBoard(String boardId) {
         elementHistoryRepository.deleteAll(histories);
     }
 
+    public List<BoardDto> getTrashBoards(UUID creatorId) {
+        List<Board> boards = boardRepository.findByCreatorIdAndIsDeletedTrue(creatorId);
+        return boards.stream()
+                .map(board -> new BoardDto(
+                        board.getId().toString(),
+                        board.getName(),
+                        board.getCategory(),
+                        board.getCreatedAt(),
+                        board.getUpdatedAt(),
+                        List.of()
+                ))
+                .collect(Collectors.toList());
+    }
+
+    public BoardDto restoreBoard(String boardId) {
+        Board board = boardRepository.findByIdAndIsDeletedTrue(UUID.fromString(boardId));
+        if (board == null) {
+            throw new RuntimeException("Board not found in trash");
+        }
+
+        board.setDeleted(false);
+        Board restoredBoard = boardRepository.save(board);
+
+        // 恢复画板下的所有组件
+        List<Element> elements = elementRepository.findByBoardIdAndIsDeletedTrue(UUID.fromString(boardId));
+        elements.forEach(element -> {
+            element.setDeleted(false);
+            elementRepository.save(element);
+        });
+
+        return new BoardDto(
+                restoredBoard.getId().toString(),
+                restoredBoard.getName(),
+                restoredBoard.getCategory(),
+                restoredBoard.getCreatedAt(),
+                restoredBoard.getUpdatedAt(),
+                List.of()
+        );
+    }
+
+    public void permanentDeleteBoard(String boardId) {
+        Board board = boardRepository.findByIdAndIsDeletedTrue(UUID.fromString(boardId));
+        if (board == null) {
+            throw new RuntimeException("Board not found in trash");
+        }
+
+        // 永久删除画板下的所有组件
+        List<Element> elements = elementRepository.findByBoardId(UUID.fromString(boardId));
+        elementRepository.deleteAll(elements);
+
+        // 永久删除画板相关的历史记录
+        List<ElementHistory> histories = elementHistoryRepository.findByBoardIdOrderByOperationAtDesc(UUID.fromString(boardId));
+        elementHistoryRepository.deleteAll(histories);
+
+        // 永久删除画板
+        boardRepository.delete(board);
+    }
+
 }

docs/index.html

@@ -5,7 +5,7 @@
     <link rel="icon" type="image/png" href="./favicon.png" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>EasyDraw</title>
-    <script type="module" crossorigin src="./assets/index-DDu4Zo5n.js"></script>
+    <script type="module" crossorigin src="./assets/index-uOZnOc04.js"></script>
     <link rel="modulepreload" crossorigin href="./assets/vue-DcXecXgS.js">
     <link rel="modulepreload" crossorigin href="./assets/element-C4pldAgc.js">
     <link rel="modulepreload" crossorigin href="./assets/lodash-CATZ7J7c.js">