update: fix-02

backend/app/api/v1/images.py

@@ -1,5 +1,6 @@
 from uuid import UUID
 import asyncio
+from sqlalchemy import delete, select
 
 from fastapi import APIRouter, Depends, UploadFile, File, HTTPException
 from fastapi.responses import FileResponse
@@ -10,7 +11,13 @@ from app.core.database import get_db
 from app.models.evidence_image import EvidenceImage, SourceApp, PageType, OcrStatus
 from app.repositories.image_repo import ImageRepository
 from app.repositories.case_repo import CaseRepository
-from app.schemas.image import ImageOut, ImageDetailOut, OcrFieldCorrection, CaseOcrStartIn
+from app.schemas.image import (
+    ImageOut,
+    ImageDetailOut,
+    OcrFieldCorrection,
+    CaseOcrStartIn,
+    CaseImagesDeleteIn,
+)
 from app.utils.hash import sha256_file
 from app.utils.file_storage import save_upload
 
@@ -172,6 +179,12 @@ async def start_case_ocr(
         await db.commit()
     else:
         images = await repo.list_for_ocr(case_id, include_done=include_done)
+        # Mark queued images as processing immediately, including when OCR is
+        # triggered from workspace page, so UI can show progress right away.
+        for img in images:
+            img.ocr_status = OcrStatus.processing
+        await db.flush()
+        await db.commit()
 
     from app.workers.ocr_tasks import process_images_ocr_batch_async
 
@@ -190,3 +203,70 @@ async def start_case_ocr(
         "totalCandidates": len(images),
         "message": f"已提交 {submitted} 张截图的 OCR 任务",
     }
+
+
+@router.delete("/cases/{case_id}/images")
+async def delete_case_images(
+    case_id: UUID,
+    payload: CaseImagesDeleteIn,
+    db: AsyncSession = Depends(get_db),
+):
+    case_repo = CaseRepository(db)
+    case = await case_repo.get(case_id)
+    if not case:
+        raise HTTPException(404, "案件不存在")
+
+    if not payload.image_ids:
+        return {"caseId": str(case_id), "deleted": 0, "message": "未选择需要删除的截图"}
+
+    repo = ImageRepository(db)
+    images = await repo.list_by_ids_in_case(case_id, payload.image_ids)
+    if not images:
+        return {"caseId": str(case_id), "deleted": 0, "message": "未找到可删除的截图"}
+
+    from app.models.ocr_block import OcrBlock
+    from app.models.transaction import TransactionRecord
+    from app.models.assessment import FraudAssessment
+
+    deleted = 0
+    try:
+        for image in images:
+            # remove related OCR blocks and extracted transactions first
+            # assessments reference transaction_records.transaction_id, so they
+            # must be deleted before deleting transaction records.
+            await db.execute(
+                delete(FraudAssessment).where(
+                    FraudAssessment.transaction_id.in_(
+                        select(TransactionRecord.id).where(
+                            TransactionRecord.evidence_image_id == image.id
+                        )
+                    )
+                )
+            )
+            await db.execute(delete(OcrBlock).where(OcrBlock.image_id == image.id))
+            await db.execute(delete(TransactionRecord).where(TransactionRecord.evidence_image_id == image.id))
+            await repo.delete(image)
+            deleted += 1
+
+            # best-effort remove local files
+            for rel in [image.file_path, image.thumb_path]:
+                if rel:
+                    try:
+                        p = settings.upload_path / rel
+                        if p.exists():
+                            p.unlink()
+                    except Exception:
+                        pass
+
+        case.image_count = await repo.count_by_case(case_id)
+        await db.flush()
+        await db.commit()
+    except Exception as e:
+        await db.rollback()
+        raise
+
+    return {
+        "caseId": str(case_id),
+        "deleted": deleted,
+        "message": f"已删除 {deleted} 张截图",
+    }

backend/app/schemas/image.py

@@ -38,3 +38,7 @@ class OcrFieldCorrection(CamelModel):
 class CaseOcrStartIn(CamelModel):
     include_done: bool = False
     image_ids: list[UUID] = []
+
+
+class CaseImagesDeleteIn(CamelModel):
+    image_ids: list[UUID] = []