package user

import (
	"context"
	"database/sql"
	"fmt"
	"time"
	"tyc-server/app/main/api/internal/svc"
	"tyc-server/app/main/api/internal/types"
	"tyc-server/app/main/model"
	jwtx "tyc-server/common/jwt"
	"tyc-server/common/tool"
	"tyc-server/common/xerr"
	"tyc-server/pkg/lzkit/crypto"
	"tyc-server/pkg/lzkit/lzUtils"

	"github.com/pkg/errors"
	"github.com/zeromicro/go-zero/core/stores/redis"
	"github.com/zeromicro/go-zero/core/stores/sqlx"

	"github.com/zeromicro/go-zero/core/logx"
)

type RegisterLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewRegisterLogic(ctx context.Context, svcCtx *svc.ServiceContext) *RegisterLogic {
	return &RegisterLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *RegisterLogic) Register(req *types.RegisterReq) (resp *types.RegisterResp, err error) {
	secretKey := l.svcCtx.Config.Encrypt.SecretKey
	encryptedMobile, err := crypto.EncryptMobile(req.Mobile, secretKey)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "手机注册, 加密手机号失败: %+v", err)
	}
	// 检查手机号是否在一分钟内已发送过验证码
	redisKey := fmt.Sprintf("%s:%s", "register", encryptedMobile)
	cacheCode, err := l.svcCtx.Redis.Get(redisKey)
	if err != nil {
		if errors.Is(err, redis.Nil) {
			return nil, errors.Wrapf(xerr.NewErrMsg("验证码已过期"), "手机注册, 验证码过期: %s", encryptedMobile)
		}
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "手机注册, 读取验证码redis缓存失败, mobile: %s, err: %+v", encryptedMobile, err)
	}
	if cacheCode != req.Code {
		return nil, errors.Wrapf(xerr.NewErrMsg("验证码不正确"), "手机注册, 验证码不正确: %s", encryptedMobile)
	}
	hasUser, findUserErr := l.svcCtx.UserModel.FindOneByMobile(l.ctx, encryptedMobile)
	if findUserErr != nil && findUserErr != model.ErrNotFound {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "手机注册, 读取数据库获取用户失败, mobile%s, err: %+v", encryptedMobile, err)
	}
	if hasUser != nil {
		return nil, errors.Wrapf(xerr.NewErrMsg("该手机号码已注册"), "手机注册, 手机号码已注册, mobile:%s", encryptedMobile)
	}
	var userId int64
	if transErr := l.svcCtx.UserModel.Trans(l.ctx, func(ctx context.Context, session sqlx.Session) error {
		user := new(model.User)
		user.Mobile = encryptedMobile
		if user.Nickname.Valid && user.Nickname.String != "" {
			user.Nickname = sql.NullString{
				String: encryptedMobile,
				Valid:  true,
			}
		}
		if len(req.Password) > 0 {
			user.Password = lzUtils.StringToNullString(tool.Md5ByString(req.Password))
		}
		insertResult, userInsertErr := l.svcCtx.UserModel.Insert(ctx, session, user)
		if userInsertErr != nil {
			return errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "手机注册, 数据库插入新用户失败, mobile%s, err: %+v", encryptedMobile, err)
		}
		lastId, lastInsertIdErr := insertResult.LastInsertId()
		if lastInsertIdErr != nil {
			return errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "手机注册, 获取新用户ID失败, err:%+v, user:%+v", lastInsertIdErr, user)
		}
		userId = lastId

		userAuth := new(model.UserAuth)
		userAuth.UserId = lastId
		userAuth.AuthKey = encryptedMobile
		userAuth.AuthType = model.UserAuthTypeAppMobile
		if _, userAuthInsertErr := l.svcCtx.UserAuthModel.Insert(ctx, session, userAuth); userAuthInsertErr != nil {
			return errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "手机注册, 数据库插入用户认证失败, err:%+v", userAuthInsertErr)
		}
		return nil
	}); transErr != nil {
		return nil, transErr
	}

	token, generaErr := jwtx.GenerateJwtToken(userId, l.svcCtx.Config.JwtAuth.AccessSecret, l.svcCtx.Config.JwtAuth.AccessExpire)
	if generaErr != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "手机注册, 生成jwt token失败, userid: %d, err:%+v", userId, generaErr)
	}
	// 获取当前时间戳
	now := time.Now().Unix()
	return &types.RegisterResp{
		AccessToken:  token,
		AccessExpire: now + l.svcCtx.Config.JwtAuth.AccessExpire,
		RefreshAfter: now + l.svcCtx.Config.JwtAuth.RefreshAfter,
	}, nil
}