from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select
from typing import List
from app.database import get_db
from app.models import Backup
from app.schemas import Backup as BackupSchema

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

@router.get("/", response_model=List[BackupSchema])
async def list_backups(db: AsyncSession = Depends(get_db)):
    result = await db.execute(select(Backup).order_by(Backup.created_at.desc()))
    backups = result.scalars().all()
    return backups

@router.get("/{backup_id}", response_model=BackupSchema)
async def get_backup(backup_id: int, db: AsyncSession = Depends(get_db)):
    result = await db.execute(select(Backup).where(Backup.id == backup_id))
    backup = result.scalar_one_or_none()
    if not backup:
        raise HTTPException(status_code=404, detail="Backup not found")
    return backup

@router.delete("/{backup_id}")
async def delete_backup(backup_id: int, db: AsyncSession = Depends(get_db)):
    result = await db.execute(select(Backup).where(Backup.id == backup_id))
    backup = result.scalar_one_or_none()
    if not backup:
        raise HTTPException(status_code=404, detail="Backup not found")
    
    await db.delete(backup)
    await db.commit()
    return {"message": "Backup deleted"}