feat: add batch-delete API endpoint, replace N+1 frontend calls

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/backend/routers/files.py

@@ -169,6 +169,34 @@ async def delete_file(
     return {"message": f"已删除 {filename}"}
 
 
+@router.post("/batch-delete")
+async def batch_delete_files(
+    req: BatchDeleteRequest,
+    current_user: dict = Depends(get_current_user),
+):
+    """Batch delete files from disk and clean up relation records."""
+    dir_map = {"input": _input_dir, "output": _output_dir, "result": _result_dir}
+    deleted = 0
+    errors = []
+    for item in req.files:
+        d = item.get("directory", "")
+        fname = item.get("filename", "")
+        if d not in dir_map or not fname:
+            errors.append(f"无效参数: {d}/{fname}")
+            continue
+        file_path = dir_map[d] / fname
+        try:
+            if file_path.exists():
+                size = file_path.stat().st_size
+                file_path.unlink()
+                deleted += 1
+                _record_file_action(fname, d, size, "delete", current_user.get("username"))
+            _cleanup_relation_for_deleted_file(d, fname)
+        except Exception as e:
+            errors.append(f"{fname}: {str(e)}")
+    return {"deleted": deleted, "errors": errors}
+
+
 @router.post("/clear/{directory}")
 async def clear_directory(
     directory: str,
@@ -224,6 +252,10 @@ class RelationDeleteRequest(BaseModel):
     ids: List[int]
 
 
+class BatchDeleteRequest(BaseModel):
+    files: list[dict]
+
+
 def _cleanup_relation_for_deleted_file(directory: str, filename: str):
     """Clean up relation table when a file is deleted."""
     import sqlite3

web/frontend/src/views/files/Images.vue

@@ -272,15 +272,15 @@ async function batchDownload() {
 async function batchDelete() {
   try {
     await ElMessageBox.confirm(`确定删除选中的 ${selected.value.length} 个文件？`, '确认')
-    for (const row of selected.value) {
+    const files = selected.value
-      if (row.input_image) {
+      .filter(r => r.input_image)
-        await api.delete(`/files/input/${encodeURIComponent(row.input_image)}`)
+      .map(r => ({ directory: 'input', filename: r.input_image }))
-      }
+    const res = await api.post('/files/batch-delete', { files })
-      if (row.id) {
+    if (res.data.errors?.length) {
-        await api.delete('/files/relations', { data: { ids: [row.id] } })
+      ElMessage.warning(`删除完成，${res.data.errors.length} 个文件失败`)
-      }
+    } else {
+      ElMessage.success('批量删除完成')
     }
-    ElMessage.success('批量删除完成')
     loadData()
   } catch (err: any) {
     if (err !== 'cancel') ElMessage.error('批量删除失败')

web/frontend/src/views/files/Orders.vue

@@ -223,15 +223,15 @@ async function batchDownload() {
 async function batchDelete() {
   try {
     await ElMessageBox.confirm(`确定删除选中的 ${selected.value.length} 个文件？`, '确认')
-    for (const row of selected.value) {
+    const files = selected.value
-      if (row.result_purchase) {
+      .filter(r => r.result_purchase)
-        await api.delete(`/files/result/${encodeURIComponent(row.result_purchase)}`)
+      .map(r => ({ directory: 'result', filename: r.result_purchase }))
-      }
+    const res = await api.post('/files/batch-delete', { files })
-      if (row.id) {
+    if (res.data.errors?.length) {
-        await api.delete('/files/relations', { data: { ids: [row.id] } })
+      ElMessage.warning(`删除完成，${res.data.errors.length} 个文件失败`)
-      }
+    } else {
+      ElMessage.success('批量删除完成')
     }
-    ElMessage.success('批量删除完成')
     loadData()
   } catch (err: any) {
     if (err !== 'cancel') ElMessage.error('批量删除失败')

web/frontend/src/views/files/Tables.vue

@@ -231,15 +231,15 @@ async function batchProcess() {
 async function batchDelete() {
   try {
     await ElMessageBox.confirm(`确定删除选中的 ${selected.value.length} 个文件？`, '确认')
-    for (const row of selected.value) {
+    const files = selected.value
-      if (row.output_excel) {
+      .filter(r => r.output_excel)
-        await api.delete(`/files/output/${encodeURIComponent(row.output_excel)}`)
+      .map(r => ({ directory: 'output', filename: r.output_excel }))
-      }
+    const res = await api.post('/files/batch-delete', { files })
-      if (row.id) {
+    if (res.data.errors?.length) {
-        await api.delete('/files/relations', { data: { ids: [row.id] } })
+      ElMessage.warning(`删除完成，${res.data.errors.length} 个文件失败`)
-      }
+    } else {
+      ElMessage.success('批量删除完成')
     }
-    ElMessage.success('批量删除完成')
     loadData()
   } catch (err: any) {
     if (err !== 'cancel') ElMessage.error('批量删除失败')