from typing import Optional
from fastapi import APIRouter, Depends, Query
from sqlalchemy.ext.asyncio import AsyncSession
from backend.database import get_db
from backend import crud
from backend.schemas import Notification

router = APIRouter(prefix="/api/notifications", tags=["history"])

@router.get("")
async def list_notifications(
    skip: int = Query(0, ge=0),
    limit: int = Query(100, ge=1, le=1000),
    channel_id: Optional[int] = None,
    status: Optional[str] = Query(None, enum=["pending", "sent", "failed"]),
    db: AsyncSession = Depends(get_db)
):
    """获取通知历史记录"""
    notifications = await crud.get_notifications(db, skip, limit, channel_id, status)
    return {
        "notifications": notifications,
        "skip": skip,
        "limit": limit
    }

@router.get("/{notification_id}")
async def get_notification(notification_id: int, db: AsyncSession = Depends(get_db)):
    """获取单条通知详情"""
    from sqlalchemy import select
    from backend.models import Notification
    
    result = await db.execute(
        select(Notification).where(Notification.id == notification_id)
    )
    notification = result.scalar_one_or_none()
    
    if not notification:
        from fastapi import HTTPException
        raise HTTPException(status_code=404, detail="Notification not found")
    
    return notification