"""配送员端接口"""
from typing import List
from datetime import datetime

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.core.auth import get_current_user
from app.models import Deliver, DeliveryTask
from app.schemas import DeliveryTaskResponse, DeliveryPickupRequest, DeliveryCompleteRequest

router = APIRouter(prefix="/deliver", tags=["配送员端接口"])


def require_deliver(current_user: dict = Depends(get_current_user)):
    """验证配送员权限"""
    if current_user.get("role") != "deliver":
        raise HTTPException(status_code=403, detail="需要配送员权限")
    return current_user


@router.get("/profile")
def get_deliver_profile(
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_deliver)
):
    """获取配送员信息"""
    deliver = db.query(Deliver).filter(Deliver.user_id == current_user["user_id"]).first()
    if not deliver:
        raise HTTPException(status_code=404, detail="配送员信息不存在")
    return deliver


@router.get("/delivery-tasks", response_model=List[DeliveryTaskResponse])
def list_delivery_tasks(
    status: str = None,
    skip: int = 0,
    limit: int = 20,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_deliver)
):
    """获取配送任务列表"""
    deliver = db.query(Deliver).filter(Deliver.user_id == current_user["user_id"]).first()
    if not deliver:
        raise HTTPException(status_code=404, detail="配送员信息不存在")

    query = db.query(DeliveryTask).filter(DeliveryTask.deliver_id == deliver.id)
    if status:
        query = query.filter(DeliveryTask.status == status)
    return query.order_by(DeliveryTask.created_at.desc()).offset(skip).limit(limit).all()


@router.get("/delivery-tasks/{task_id}", response_model=DeliveryTaskResponse)
def get_delivery_task(
    task_id: int,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_deliver)
):
    """获取配送任务详情"""
    deliver = db.query(Deliver).filter(Deliver.user_id == current_user["user_id"]).first()
    if not deliver:
        raise HTTPException(status_code=404, detail="配送员信息不存在")

    task = db.query(DeliveryTask).filter(
        DeliveryTask.id == task_id,
        DeliveryTask.deliver_id == deliver.id
    ).first()
    if not task:
        raise HTTPException(status_code=404, detail="配送任务不存在")
    return task


@router.post("/delivery-tasks/{task_id}/pickup")
def pickup_confirm(
    task_id: int,
    request: DeliveryPickupRequest,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_deliver)
):
    """确认取货"""
    deliver = db.query(Deliver).filter(Deliver.user_id == current_user["user_id"]).first()
    if not deliver:
        raise HTTPException(status_code=404, detail="配送员信息不存在")

    task = db.query(DeliveryTask).filter(
        DeliveryTask.id == task_id,
        DeliveryTask.deliver_id == deliver.id
    ).first()
    if not task:
        raise HTTPException(status_code=404, detail="配送任务不存在")

    if task.status != "pending":
        raise HTTPException(status_code=400, detail="当前任务状态不允许取货")

    task.status = "picking"
    task.pickup_time = datetime.utcnow()
    task.pickup_remark = request.remark
    task.pickup_image_url = request.image_url
    db.commit()
    return {"message": "取货确认成功"}


@router.post("/delivery-tasks/{task_id}/complete")
def delivery_complete(
    task_id: int,
    request: DeliveryCompleteRequest,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_deliver)
):
    """确认送达"""
    deliver = db.query(Deliver).filter(Deliver.user_id == current_user["user_id"]).first()
    if not deliver:
        raise HTTPException(status_code=404, detail="配送员信息不存在")

    task = db.query(DeliveryTask).filter(
        DeliveryTask.id == task_id,
        DeliveryTask.deliver_id == deliver.id
    ).first()
    if not task:
        raise HTTPException(status_code=404, detail="配送任务不存在")

    if task.status not in ["picking", "delivering"]:
        raise HTTPException(status_code=400, detail="当前任务状态不允许送达")

    task.status = "completed"
    task.delivery_time = datetime.utcnow()
    task.delivery_remark = request.remark
    task.delivery_image_url = request.image_url
    db.commit()
    return {"message": "送达确认成功"}


@router.get("/expiring-tasks", response_model=List[DeliveryTaskResponse])
def get_expiring_tasks(
    minutes: int = 60,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_deliver)
):
    """获取即将过期的配送任务(1小时内)"""
    deliver = db.query(Deliver).filter(Deliver.user_id == current_user["user_id"]).first()
    if not deliver:
        raise HTTPException(status_code=404, detail="配送员信息不存在")

    from datetime import timedelta
    expire_time = datetime.utcnow() + timedelta(minutes=minutes)

    tasks = db.query(DeliveryTask).filter(
        DeliveryTask.deliver_id == deliver.id,
        DeliveryTask.status.in_(["pending", "picking"]),
        DeliveryTask.created_at <= expire_time
    ).all()
    return tasks