init

backend/app/services/file_service.py

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+import os
+import uuid
+import shutil
+from fastapi import UploadFile
+from app.config import settings
+
+
+class FileService:
+    """文件上传、存储、删除"""
+
+    def __init__(self):
+        os.makedirs(settings.UPLOAD_DIR, exist_ok=True)
+        os.makedirs(os.path.join(settings.UPLOAD_DIR, "transcripts"), exist_ok=True)
+        os.makedirs(os.path.join(settings.UPLOAD_DIR, "persons"), exist_ok=True)
+        os.makedirs(settings.EXPORT_DIR, exist_ok=True)
+
+    async def save_transcript(self, file: UploadFile) -> dict:
+        """保存上传的文字稿"""
+        file_id = str(uuid.uuid4())
+        ext = os.path.splitext(file.filename)[1]
+        save_name = f"{file_id}{ext}"
+        save_dir = os.path.join(settings.UPLOAD_DIR, "transcripts")
+        save_path = os.path.join(save_dir, save_name)
+
+        content = await file.read()
+        with open(save_path, "wb") as f:
+            f.write(content)
+
+        return {
+            "id": file_id,
+            "filename": file.filename,
+            "file_path": save_path,
+            "file_size": len(content),
+        }
+
+    async def save_person(self, file: UploadFile) -> dict:
+        """保存上传的讲述者信息"""
+        file_id = str(uuid.uuid4())
+        ext = os.path.splitext(file.filename)[1]
+        save_name = f"{file_id}{ext}"
+        save_dir = os.path.join(settings.UPLOAD_DIR, "persons")
+        save_path = os.path.join(save_dir, save_name)
+
+        content = await file.read()
+        with open(save_path, "wb") as f:
+            f.write(content)
+
+        return {
+            "id": file_id,
+            "filename": file.filename,
+            "file_path": save_path,
+            "file_size": len(content),
+        }
+
+    def delete_file(self, file_path: str) -> bool:
+        """删除文件"""
+        if os.path.exists(file_path):
+            os.remove(file_path)
+            return True
+        return False
+
+
+file_service = FileService()