from fastapi import APIRouter

from app.core.exceptions import DocumentNotFoundError, ExportError
from app.schemas.export import ExportDocRequest, ExportDocResponse
from app.services.export_service import export_doc

router = APIRouter(tags=["Export"])


def _ok(data: dict) -> dict:
    return {"code": 0, "message": "Success", "data": data}


# ------------------------------------------------------------------ #
# POST /export/doc  — 导出 .doc，写入记录，返回永久下载链接
# ------------------------------------------------------------------ #

@router.post("/export/doc", summary="导出 .doc 文件")
async def export_document(body: ExportDocRequest) -> dict:
    # 若传入 documentId，可选同步更新草稿（失败不阻塞导出）
    if body.document_id:
        try:
            from app.core.database import AsyncSessionLocal
            from app.schemas.document import UpdateDocumentRequest
            from app.services.document_service import DocumentService

            async with AsyncSessionLocal() as db:
                svc = DocumentService(db)
                await svc.update_document(
                    body.document_id,
                    UpdateDocumentRequest(content=body.content),
                )
        except DocumentNotFoundError:
            pass
        except Exception:
            pass

    result = await export_doc(
        user_id=body.user_id,
        file_name=body.file_name,
        content=body.content,
        style_id=body.style_id,
        document_id=body.document_id,
    )

    resp = ExportDocResponse(
        record_id=result["record_id"],
        download_url=result["download_url"],
        file_name=result["file_name"],
        style_id=result["style_id"],
        warning=result["warning"],
    )
    return _ok(resp.model_dump(by_alias=True))