# app/services/task_service.py
from sqlalchemy.orm import Session
from typing import List
from app.core.biz_exception import NotFoundError, PermissionDeniedError, BizLogicError
from app.models.vas_task import VasTask
from app.schemas.vas_task import VasTaskCreate
from datetime import datetime

class VasTaskService:

    def create(db: Session, data: VasTaskCreate):
        rec = VasTask(**data.dict(), status='pending', created_at=datetime.utcnow())
        db.add(rec)
        db.commit()
        db.refresh(rec)
        return rec

    def get_pending(
        db: Session,
        routing_key: str = None,
        script_version: str = None,
        limit: int = 50,
    ):
        query = db.query(VasTask).filter(
            VasTask.status == "pending",
        )
        
        if routing_key:
            query = query.filter(VasTask.routing_key == routing_key)

        if script_version:
            query = query.filter(VasTask.script_version == script_version)

        return (
            query
            .order_by(
                VasTask.priority.desc(),
                VasTask.created_at.asc()
            )
            .limit(limit)
            .all()
        )
        
    def get_active_task_by_order_id(db: Session, order_id:str):
        recs = db.query(VasTask).filter_by(
            VasTask.status == "pending",
            VasTask.order_id==order_id,
            ).all()
        return recs
    
    def return_to_queue(db: Session, id:int):
        rec = db.query(VasTask).filter_by(id=id).first()
        if not rec:
            raise NotFoundError("Task not exist")
        rec.status = 'pending'
        db.commit()
        db.refresh(rec)
        return rec

    def manual_confirm(db: Session, id:int):
        rec = db.query(VasTask).filter_by(id=id).first()
        if not rec:
            raise NotFoundError("Task not exist")
        rec.status = 'completed'
        db.commit()
        db.refresh(rec)
        return rec