"""
客户端认证接口
"""
from fastapi import APIRouter, Depends, HTTPException, Request
from sqlalchemy.orm import Session
from pydantic import BaseModel
from app.database import get_db
from app.models.user import User
from app.models.card import Card
from app.models.recharge_record import RechargeRecord
from app.core.security import verify_password, get_password_hash
from app.core.encrypt import encryptor
from app.core.logger import logger
from app.config import settings
from datetime import datetime, timedelta

router = APIRouter()

class RegisterRequest(BaseModel):
    """注册请求"""
    username: str
    password: str
    email: str
    card_code: str
    machine_code: str

class LoginRequest(BaseModel):
    """登录请求"""
    username: str
    password: str
    machine_code: str

class UnbindRequest(BaseModel):
    """解绑请求"""
    username: str
    password: str

class ActivateCardRequest(BaseModel):
    """激活卡密请求"""
    user_id: int
    card_code: str

@router.post("/register")
async def register(
    request: Request,
    db: Session = Depends(get_db)
):
    """用户注册"""
    try:
        # 获取请求数据
        data = await request.json()
        
        # 解密请求数据
        if settings.ENCRYPT_ENABLED:
            encrypted_data = data.get("encrypted", "")
            if not encrypted_data:
                return {"code": 400, "msg": "缺少加密数据"}
            decrypted = encryptor.decrypt(encrypted_data)
        else:
            decrypted = data
        
        req = RegisterRequest(**decrypted)
        
        # 检查用户名是否存在
        existing_user = db.query(User).filter(User.username == req.username).first()
        if existing_user:
            return {"code": 400, "msg": "用户名已存在"}
        
        # 验证卡密
        card = db.query(Card).filter(
            Card.card_code == req.card_code,
            Card.status == 0
        ).first()
        
        if not card:
            return {"code": 400, "msg": "卡密无效或已被使用"}
        
        # 计算到期时间
        expire_time = datetime.now() + timedelta(days=card.days)
        
        # 创建用户
        user = User(
            username=req.username,
            password=get_password_hash(req.password),
            email=req.email,
            machine_code=req.machine_code,
            card_id=card.id,
            expire_time=expire_time,
            status=1,
            created_at=datetime.now(),
            updated_at=datetime.now()
        )
        db.add(user)
        db.flush()  # 刷新以获取user.id
        
        # 更新卡密状态
        card.user_id = user.id
        card.activated_at = datetime.now()
        card.expire_time = expire_time
        card.status = 1
        card.updated_at = datetime.now()
        
        # 创建充值记录
        recharge_record = RechargeRecord(
            user_id=user.id,
            card_id=card.id,
            software_code=card.software_code,
            days=card.days,
            expire_time_before=None,  # 新用户，之前没有到期时间
            expire_time_after=expire_time,
            created_at=datetime.now()
        )
        db.add(recharge_record)
        
        db.commit()
        
        logger.info(f"用户注册成功: {req.username}")
        return {"code": 200, "msg": "注册成功", "data": {"user_id": user.id}}
        
    except Exception as e:
        db.rollback()
        logger.error(f"用户注册失败: {e}")
        return {"code": 500, "msg": "注册失败"}

@router.post("/login")
async def login(
    request: Request,
    db: Session = Depends(get_db)
):
    """用户登录"""
    try:
        # 获取请求数据
        data = await request.json()
        
        # 解密请求数据
        if settings.ENCRYPT_ENABLED:
            encrypted_data = data.get("encrypted", "")
            if not encrypted_data:
                return {"code": 400, "msg": "缺少加密数据"}
            decrypted = encryptor.decrypt(encrypted_data)
        else:
            decrypted = data
        
        req = LoginRequest(**decrypted)
        
        # 查找用户
        user = db.query(User).filter(User.username == req.username).first()
        if not user:
            return {"code": 401, "msg": "用户名或密码错误"}
        
        # 验证密码
        if not verify_password(req.password, user.password):
            return {"code": 401, "msg": "用户名或密码错误"}
        
        # 验证/绑定机器码
        if user.machine_code:
            if user.machine_code != req.machine_code:
                return {"code": 403, "msg": "机器码不匹配，请先解绑"}
        else:
            # 用户已解绑或尚未绑定机器码，第一次登录时绑定当前机器码
            user.machine_code = req.machine_code
        
        # 检查是否过期
        if user.expire_time and user.expire_time < datetime.now():
            return {"code": 403, "msg": "卡密已过期"}
        
        # 更新登录信息
        client_ip = request.client.host if request.client else None
        user.last_login_time = datetime.now()
        user.last_login_ip = client_ip
        user.updated_at = datetime.now()
        db.commit()
        
        logger.info(f"用户登录成功: {req.username}")
        return {
            "code": 200,
            "msg": "登录成功",
            "data": {
                "user_id": user.id,
                "username": user.username,
                "expire_time": user.expire_time.isoformat() if user.expire_time else None
            }
        }
        
    except Exception as e:
        logger.error(f"用户登录失败: {e}")
        return {"code": 500, "msg": "登录失败"}

@router.post("/unbind")
async def unbind(
    request: Request,
    db: Session = Depends(get_db)
):
    """机器解绑"""
    try:
        # 获取请求数据
        data = await request.json()
        
        # 解密请求数据
        if settings.ENCRYPT_ENABLED:
            encrypted_data = data.get("encrypted", "")
            if not encrypted_data:
                return {"code": 400, "msg": "缺少加密数据"}
            decrypted = encryptor.decrypt(encrypted_data)
        else:
            decrypted = data
        
        req = UnbindRequest(**decrypted)
        
        # 查找用户
        user = db.query(User).filter(User.username == req.username).first()
        if not user:
            return {"code": 401, "msg": "用户名或密码错误"}
        
        # 验证密码
        if not verify_password(req.password, user.password):
            return {"code": 401, "msg": "用户名或密码错误"}
        
        # 解绑机器码
        user.machine_code = None
        user.updated_at = datetime.now()
        db.commit()
        
        logger.info(f"机器解绑成功: {req.username}")
        return {"code": 200, "msg": "解绑成功"}
        
    except Exception as e:
        db.rollback()
        logger.error(f"机器解绑失败: {e}")
        return {"code": 500, "msg": "解绑失败"}

@router.post("/heartbeat")
async def heartbeat(
    request: Request,
    db: Session = Depends(get_db)
):
    """心跳检测"""
    try:
        # 获取请求数据
        data = await request.json()
        
        # 解密请求数据
        if settings.ENCRYPT_ENABLED:
            encrypted_data = data.get("encrypted", "")
            if not encrypted_data:
                return {"code": 400, "msg": "缺少加密数据"}
            decrypted = encryptor.decrypt(encrypted_data)
        else:
            decrypted = data
        
        user_id = decrypted.get("user_id")
        if not user_id:
            return {"code": 400, "msg": "参数错误"}
        
        # 查找用户
        user = db.query(User).filter(User.id == user_id).first()
        if not user:
            return {"code": 404, "msg": "用户不存在"}
        
        # 检查是否过期
        if user.expire_time and user.expire_time < datetime.now():
            return {"code": 403, "msg": "卡密已过期"}
        
        return {
            "code": 200,
            "msg": "正常",
            "data": {
                "expire_time": user.expire_time.isoformat() if user.expire_time else None
            }
        }
        
    except Exception as e:
        logger.error(f"心跳检测失败: {e}")
        return {"code": 500, "msg": "心跳检测失败"}

@router.post("/activate-card")
async def activate_card(
    request: Request,
    db: Session = Depends(get_db)
):
    """激活卡密（充值）"""
    try:
        # 获取请求数据
        data = await request.json()
        
        # 解密请求数据
        if settings.ENCRYPT_ENABLED:
            encrypted_data = data.get("encrypted", "")
            if not encrypted_data:
                return {"code": 400, "msg": "缺少加密数据"}
            decrypted = encryptor.decrypt(encrypted_data)
        else:
            decrypted = data
        
        req = ActivateCardRequest(**decrypted)
        
        # 查找用户
        user = db.query(User).filter(User.id == req.user_id).first()
        if not user:
            return {"code": 404, "msg": "用户不存在"}
        
        # 验证卡密
        card = db.query(Card).filter(
            Card.card_code == req.card_code,
            Card.status == 0
        ).first()
        
        if not card:
            return {"code": 400, "msg": "卡密无效或已被使用"}
        
        # 检查软件特征码是否匹配
        software_code = decrypted.get("software_code", "")
        if card.software_code != software_code:
            return {"code": 400, "msg": "卡密与当前软件不匹配"}
        
        # 计算新的到期时间
        expire_time_before = user.expire_time
        if expire_time_before and expire_time_before > datetime.now():
            # 如果还有有效期，则累加
            expire_time_after = expire_time_before + timedelta(days=card.days)
        else:
            # 如果已过期或没有有效期，则从当前时间开始计算
            expire_time_after = datetime.now() + timedelta(days=card.days)
        
        # 更新用户到期时间
        user.expire_time = expire_time_after
        user.updated_at = datetime.now()
        
        # 更新卡密状态
        card.user_id = user.id
        card.activated_at = datetime.now()
        card.expire_time = expire_time_after
        card.status = 1
        card.updated_at = datetime.now()
        
        # 创建充值记录
        recharge_record = RechargeRecord(
            user_id=user.id,
            card_id=card.id,
            software_code=card.software_code,
            days=card.days,
            expire_time_before=expire_time_before,
            expire_time_after=expire_time_after,
            created_at=datetime.now()
        )
        db.add(recharge_record)
        
        db.commit()
        
        logger.info(f"用户 {user.username} 激活卡密成功: {req.card_code}")
        return {
            "code": 200,
            "msg": "激活成功",
            "data": {
                "expire_time": expire_time_after.isoformat(),
                "days": card.days
            }
        }
        
    except Exception as e:
        db.rollback()
        logger.error(f"激活卡密失败: {e}")
        return {"code": 500, "msg": "激活失败"}

@router.get("/recharge-records")
async def get_recharge_records(
    request: Request,
    db: Session = Depends(get_db)
):
    """获取充值记录"""
    try:
        # 获取请求参数
        params = dict(request.query_params)
        
        # 解密请求数据（如果有）
        user_id = None
        if settings.ENCRYPT_ENABLED:
            # GET请求可能通过query参数传递加密数据
            encrypted_data = params.get("encrypted", "")
            if encrypted_data:
                decrypted = encryptor.decrypt(encrypted_data)
                user_id = decrypted.get("user_id")
        else:
            user_id = params.get("user_id")
            if user_id:
                user_id = int(user_id)
        
        if not user_id:
            return {"code": 400, "msg": "缺少用户ID"}
        
        # 查询充值记录
        records = db.query(RechargeRecord).filter(
            RechargeRecord.user_id == user_id
        ).order_by(RechargeRecord.created_at.desc()).all()
        
        # 格式化返回数据
        records_data = []
        for record in records:
            # 获取卡密代码
            card_code = ""
            if record.card_id:
                card = db.query(Card).filter(Card.id == record.card_id).first()
                if card:
                    card_code = card.card_code
            
            records_data.append({
                "id": record.id,
                "card_code": card_code,
                "days": record.days,
                "expire_time_before": record.expire_time_before.isoformat() if record.expire_time_before else None,
                "expire_time_after": record.expire_time_after.isoformat() if record.expire_time_after else None,
                "created_at": record.created_at.isoformat() if record.created_at else None
            })
        
        return {
            "code": 200,
            "msg": "成功",
            "data": records_data
        }
        
    except Exception as e:
        logger.error(f"获取充值记录失败: {e}")
        return {"code": 500, "msg": "获取充值记录失败"}