"""
用户相关 API 路由
"""
import os
from datetime import timedelta

from fastapi import APIRouter, Depends, HTTPException
from pydantic import BaseModel
from typing import Optional, Literal

from middleware.auth import get_current_user
from database.models import User, utc_now
from database import get_async_db
from sqlalchemy.ext.asyncio import AsyncSession

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

# 是否开启测试订阅（仅用于微信支付审核未通过前的测试）
ENABLE_TEST_SUBSCRIPTION = os.getenv("ENABLE_TEST_SUBSCRIPTION", "").lower() in ("1", "true", "yes")


class UserProfileResponse(BaseModel):
    """用户资料响应"""
    id: str
    phone: str
    email: Optional[str]
    nickname: str
    avatar_url: Optional[str]
    subscription_type: str
    created_at: str
    birth_year: Optional[int] = None
    birth_place: Optional[str] = None
    grew_up_place: Optional[str] = None
    occupation: Optional[str] = None


class UpdateUserProfileRequest(BaseModel):
    """更新用户基础资料请求"""
    birth_year: Optional[int] = None
    birth_place: Optional[str] = None
    grew_up_place: Optional[str] = None
    occupation: Optional[str] = None


class TestSubscriptionRequest(BaseModel):
    """测试订阅请求"""
    action: Literal["activate", "deactivate"]
    plan_id: Optional[str] = "pro"  # activate 时生效，仅支持 pro / pro_plus


class TestSubscriptionResponse(BaseModel):
    """测试订阅响应"""
    success: bool
    message: str
    subscription_type: str


@router.get("/profile", response_model=UserProfileResponse)
async def get_user_profile(
    current_user: User = Depends(get_current_user)
):
    """
    获取当前用户资料

    与 /api/auth/me 功能相同，但路径不同以满足前端需求
    """
    return UserProfileResponse(
        id=current_user.id,
        phone=current_user.phone,
        email=current_user.email,
        nickname=current_user.nickname,
        avatar_url=current_user.avatar_url,
        subscription_type=current_user.subscription_type,
        created_at=current_user.created_at.isoformat(),
        birth_year=current_user.birth_year,
        birth_place=current_user.birth_place,
        grew_up_place=current_user.grew_up_place,
        occupation=current_user.occupation,
    )


@router.put("/profile", response_model=UserProfileResponse)
async def update_user_profile(
    body: UpdateUserProfileRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_async_db),
):
    """更新用户基础资料（出生年份、出生地、成长地、职业）"""
    if body.birth_year is not None:
        current_user.birth_year = body.birth_year
    if body.birth_place is not None:
        current_user.birth_place = body.birth_place
    if body.grew_up_place is not None:
        current_user.grew_up_place = body.grew_up_place
    if body.occupation is not None:
        current_user.occupation = body.occupation
    await db.commit()
    await db.refresh(current_user)
    return UserProfileResponse(
        id=current_user.id,
        phone=current_user.phone,
        email=current_user.email,
        nickname=current_user.nickname,
        avatar_url=current_user.avatar_url,
        subscription_type=current_user.subscription_type,
        created_at=current_user.created_at.isoformat(),
        birth_year=current_user.birth_year,
        birth_place=current_user.birth_place,
        grew_up_place=current_user.grew_up_place,
        occupation=current_user.occupation,
    )


@router.post("/test-subscription", response_model=TestSubscriptionResponse)
async def test_subscription(
    body: TestSubscriptionRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_async_db),
):
    """
    测试订阅开关（仅当 ENABLE_TEST_SUBSCRIPTION=1 时可用）。

    - activate：将当前用户设为付费套餐（pro 或 pro_plus），用于在微信支付审核通过前测试付费后额度。
    - deactivate：恢复为免费体验版。
    """
    if not ENABLE_TEST_SUBSCRIPTION:
        raise HTTPException(status_code=404, detail="测试订阅功能未开放")

    now = utc_now()

    if body.action == "activate":
        if body.plan_id not in ("pro", "pro_plus"):
            raise HTTPException(status_code=400, detail="plan_id 仅支持 pro 或 pro_plus")
        current_user.subscription_type = body.plan_id
        current_user.subscription_expires_at = now + timedelta(days=365)
        await db.flush()
        return TestSubscriptionResponse(
            success=True,
            message=f"已开启测试订阅：{body.plan_id}",
            subscription_type=body.plan_id,
        )

    # deactivate
    current_user.subscription_type = "free"
    current_user.subscription_expires_at = None
    await db.flush()
    return TestSubscriptionResponse(
        success=True,
        message="已关闭测试订阅，恢复免费体验版",
        subscription_type="free",
    )