package svc

import (
	"applet/app/db"
	"applet/app/md"
	"applet/app/utils"
	"errors"
	"github.com/gin-gonic/gin"
	"strings"
)

// 因为在mw_auth已经做完所有校验, 因此在此不再做任何校验
// GetUser is get user model
func GetUser(c *gin.Context) *md.User {
	user, _ := c.Get("user")
	if user == nil {
		return nil
	}
	return user.(*md.User)
}

func GetUid(c *gin.Context) string {
	user, _ := c.Get("user")
	u := user.(*md.User)
	return utils.IntToStr(u.Info.Uid)
}

func CheckUser(c *gin.Context) (*md.User, error) {
	token := c.GetHeader("Authorization")
	if token == "" {
		return nil, errors.New("token not exist")
	}
	// 按空格分割
	parts := strings.SplitN(token, " ", 2)
	if !(len(parts) == 2 && parts[0] == "Bearer") {
		return nil, errors.New("token format error")
	}
	// parts[1]是获取到的tokenString，我们使用之前定义好的解析JWT的函数来解析它
	mc, err := utils.ParseToken(parts[1])
	if err != nil {
		return nil, err
	}

	// 获取user
	u, err := db.UserFindByID(db.DBs[c.GetString("mid")], mc.UID)
	if err != nil {
		return nil, err
	}
	if u == nil {
		return nil, errors.New("token can not find user")
	}
	// 获取user profile
	up, err := db.UserProfileFindByID(db.DBs[c.GetString("mid")], mc.UID)
	if err != nil {
		return nil, err
	}
	// 获取user 等级
	ul, err := db.UserLevelByID(db.DBs[c.GetString("mid")], u.Level)
	if err != nil {
		return nil, err
	}

	user := &md.User{
		Info:    u,
		Profile: up,
		Level:   ul,
	}
	return user, nil
}