from datetime import datetime, time
from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy import select
from sqlalchemy.orm import Session, selectinload
from .shared import site_config
from ..auth import create_customer_token, optional_customer, require_customer
from ..api_response import success_response
from ..database import get_db
from ..models import ConciergeAdvisor, Customer, DetailRecord, HomeTeamBuilding, HomeWanfaRecommendation, HomeWildArchive, Lead, WanfaCategory
from ..schemas import LeadCreateIn, PhoneLoginIn
from ..serializers import (
    public_concierge_advisor_dict,
    public_home_team_building_dict,
    public_home_team_building_detail_dict,
    public_home_wanfa_recommendation_dict,
    public_home_wild_archive_detail_dict,
    public_home_wild_archive_dict,
    public_detail_dict,
    public_wanfa_category_dict,
)
from ..wechat import WechatApiError, WechatConfigError, exchange_phone_code


router = APIRouter()


def mask_phone(phone: str) -> str:
    normalized = phone.strip()
    if len(normalized) <= 7:
        return "***"
    return f"{normalized[:3]}****{normalized[-4:]}"


def public_customer_dict(customer: Customer) -> dict:
    return {"id": customer.id, "phoneMasked": mask_phone(customer.phone)}


@router.get("/health")
def health():
    return success_response({"ok": True, "service": "miniapp-api"})


@router.get("/api/public/site-config")
def get_site_config(db: Session = Depends(get_db)):
    return success_response(site_config(db, active_only=True))


@router.get("/api/public/wanfa/categories")
def get_public_wanfa_categories(db: Session = Depends(get_db)):
    categories = db.scalars(
        select(WanfaCategory)
        .options(selectinload(WanfaCategory.routes))
        .order_by(WanfaCategory.sortOrder.asc())
    ).all()
    return success_response({"categories": [public_wanfa_category_dict(category) for category in categories]})


@router.get("/api/public/details/{detail_key}")
def get_public_detail(detail_key: str, db: Session = Depends(get_db)):
    detail = db.scalar(
        select(DetailRecord).where(
            DetailRecord.key == detail_key,
            DetailRecord.isActive.is_(True),
        )
    )
    if not detail:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="详情不存在")
    advisor = None
    if detail.conciergeAdvisorId:
        candidate = db.get(ConciergeAdvisor, detail.conciergeAdvisorId)
        if candidate and candidate.isActive:
            advisor = candidate
    return success_response(public_detail_dict(detail, advisor))


@router.get("/api/public/concierge/advisors")
def get_public_concierge_advisors(db: Session = Depends(get_db)):
    advisors = db.scalars(
        select(ConciergeAdvisor)
        .where(ConciergeAdvisor.isActive.is_(True))
        .order_by(ConciergeAdvisor.sortOrder.asc())
    ).all()
    return success_response({"advisors": [public_concierge_advisor_dict(advisor) for advisor in advisors]})


@router.get("/api/public/home")
def get_public_home(db: Session = Depends(get_db)):
    team_buildings = db.scalars(
        select(HomeTeamBuilding)
        .where(HomeTeamBuilding.isActive.is_(True))
        .order_by(HomeTeamBuilding.sortOrder.asc())
    ).all()
    wild_archives = db.scalars(
        select(HomeWildArchive)
        .where(HomeWildArchive.isActive.is_(True))
        .order_by(HomeWildArchive.sortOrder.asc())
    ).all()
    play_recommendations = db.scalars(
        select(HomeWanfaRecommendation)
        .options(selectinload(HomeWanfaRecommendation.category).selectinload(WanfaCategory.routes))
        .where(HomeWanfaRecommendation.isActive.is_(True))
        .order_by(HomeWanfaRecommendation.sortOrder.asc())
    ).all()
    return success_response(
        {
            "experiences": [public_home_wanfa_recommendation_dict(item) for item in play_recommendations],
            "teamBuildings": [public_home_team_building_dict(item) for item in team_buildings],
            "wildArchives": [public_home_wild_archive_dict(item) for item in wild_archives],
        }
    )


@router.get("/api/public/home/team-buildings/{team_building_id}")
def get_public_team_building(team_building_id: str, db: Session = Depends(get_db)):
    team_building = db.scalar(
        select(HomeTeamBuilding).where(
            HomeTeamBuilding.id == team_building_id,
            HomeTeamBuilding.isActive.is_(True),
        )
    )
    if not team_building:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="团队共创不存在")
    return success_response(public_home_team_building_detail_dict(team_building))


@router.get("/api/public/home/wild-archives")
def list_public_wild_archives(db: Session = Depends(get_db)):
    archives = db.scalars(
        select(HomeWildArchive)
        .where(HomeWildArchive.isActive.is_(True))
        .order_by(HomeWildArchive.sortOrder.asc())
    ).all()
    return success_response({"items": [public_home_wild_archive_dict(item) for item in archives]})


@router.get("/api/public/home/wild-archives/{archive_id}")
def get_public_wild_archive(archive_id: str, db: Session = Depends(get_db)):
    archive = db.scalar(
        select(HomeWildArchive).where(
            HomeWildArchive.id == archive_id,
            HomeWildArchive.isActive.is_(True),
        )
    )
    if not archive:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="客片案例不存在")
    return success_response(public_home_wild_archive_detail_dict(archive))


@router.post("/api/public/auth/phone-login")
def phone_login(body: PhoneLoginIn, db: Session = Depends(get_db)):
    try:
        phone = exchange_phone_code(body.code)
    except WechatConfigError as exc:
        raise HTTPException(status_code=status.HTTP_503_SERVICE_UNAVAILABLE, detail=str(exc)) from exc
    except WechatApiError as exc:
        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(exc)) from exc

    customer = db.scalar(select(Customer).where(Customer.phone == phone))
    if not customer:
        customer = Customer(phone=phone)
        db.add(customer)
        db.flush()
    db.commit()
    db.refresh(customer)
    return success_response({"token": create_customer_token(customer), "customer": public_customer_dict(customer)})


@router.get("/api/public/auth/me")
def current_customer(customer: Customer = Depends(require_customer)):
    return success_response(public_customer_dict(customer))


@router.post("/api/public/leads", status_code=status.HTTP_201_CREATED)
def create_lead(
    body: LeadCreateIn,
    customer: Customer | None = Depends(optional_customer),
    db: Session = Depends(get_db),
):
    if body.leadType == "vehicle" and customer is None:
        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="用车需求提交前请先登录")

    payload = body.model_dump(exclude_none=True, exclude={"vehicleDemand"})
    if body.leadType == "vehicle" and body.vehicleDemand:
        demand = body.vehicleDemand
        payload.update(
            {
                "customerId": customer.id if customer else None,
                "destination": demand.dropoffLocation,
                "travelDate": datetime.combine(demand.travelDate, time.min),
                "peopleCount": demand.peopleCount,
                "vehicleDemand": demand.model_dump(mode="json"),
            }
        )
    lead = Lead(**payload, status="new")
    db.add(lead)
    db.commit()
    db.refresh(lead)
    return success_response({"id": lead.id, "status": lead.status}, status_code=status.HTTP_201_CREATED)