from __future__ import annotations

from fastapi import APIRouter, Depends, File, Form, UploadFile
from sqlalchemy.ext.asyncio import AsyncSession

from app.dependencies import get_admin_user, get_db
from app.enums.admin_upload import AdminUploadResourceTypeEnum, AdminUploadSceneEnum
from app.models.user import User
from app.schemas.admin_upload import AdminUploadFileOut
from app.services.admin_upload import admin_upload_service

router = APIRouter(prefix="/admin/uploads", tags=["admin-upload"])


@router.post(
    "/files",
    response_model=AdminUploadFileOut,
    summary="管理后台全局文件上传",
    description=(
        "管理后台纯文件上传统一入口。通过 scene 区分业务场景并落到独立目录；"
        "首页素材附件使用 scene=home_material_reference，系统Logo使用 system_logo，PDF使用 system_pdf，开户缩略图使用 open_type_thumb。"
    ),
)
async def upload_admin_file(
    file: UploadFile = File(..., description="上传文件。"),
    scene: AdminUploadSceneEnum = Form(..., description="上传场景。"),
    resource_type: AdminUploadResourceTypeEnum = Form(..., description="资源类型：image/video/audio/pdf/file。"),
    duration_seconds: float | None = Form(None, ge=0, description="音视频时长，单位秒。"),
    admin: User = Depends(get_admin_user),
    db: AsyncSession = Depends(get_db),
):
    result = await admin_upload_service.upload_file(
        db,
        file=file,
        scene=scene,
        resource_type=resource_type,
        duration_seconds=duration_seconds,
        admin=admin,
    )
    await db.commit()
    return result