package service

import (
	"fmt"
	"sort"
	"time"

	"joylink.club/bj-rtsts-server/db/dbquery"
	"joylink.club/bj-rtsts-server/db/model"
	"joylink.club/bj-rtsts-server/dto"
	"joylink.club/bj-rtsts-server/sys_error"
)

// 分页查询用户列表
func PagingQueryUser(query *dto.PageUserReqDto) (*dto.PageDto[*dto.UserRspDto], error) {
	u := dbquery.User
	uq := u.Where()
	if query.Name != "" {
		uq = uq.Where(u.Name.Like(fmt.Sprintf("%%%s%%", query.Name)))
	}
	if query.Mobile != "" {
		uq = uq.Where(u.Mobile.Like(fmt.Sprintf("%%%s%%", query.Mobile)))
	}
	records, total, err := uq.Debug().Order(u.RegisterTime).FindByPage(query.Offset(), query.Size)
	if err != nil {
		panic(dto.ErrorDto{Code: dto.QueryDBError, Message: err.Error()})
	}
	return &dto.PageDto[*dto.UserRspDto]{Total: int(total), PageQueryDto: query.PageQueryDto, Records: linkUserRole(records)}, err
}

func Register(user *dto.RegisterUser) error {
	u := dbquery.User
	uq := u.Where()
	uq = uq.Where(u.Mobile.Eq(user.Mobile))
	findCounter, err := uq.Count()
	if err != nil {
		return sys_error.New("数据服务异常", err)
	}
	if findCounter > 0 {
		return sys_error.New("手机号已存在")
	}
	user.RegisterTime = time.Now()
	err = u.Save(user)
	if err != nil {
		return sys_error.New("数据服务异常", err)
	}
	return nil
}

func FindUserInfo(userId int32) *dto.UserRspDto {
	user, _ := dbquery.User.Where(dbquery.User.ID.Eq(userId)).First()
	if user == nil {
		panic(dto.ErrorDto{Code: dto.DataNotExist, Message: "没有获取到对应的用户信息"})
	}
	rspUser := dto.ConvertFromUserDto(user)
	roles := QueryAuthRoleByUid(user.ID)
	rids := make([]int32, len(roles))
	if len(roles) == 0 { // 如果没有指派用户时，指定普通用户信息
		rspUser.Roles = append(rspUser.Roles, dto.GetDefaultAuthRole())
		rids = append(rids, int32(dto.USER))
	} else {
		for i, r := range roles {
			rids[i] = r.ID
			rspUser.Roles = append(rspUser.Roles, &dto.AuthRoleRspDto{Id: r.ID, Name: r.Name})
		}
	}
	// 查询权限路径
	rspUser.Paths = QueryAuthApiPathByRids(rids)
	return rspUser
}

// 查询关联用户角色信息
func linkUserRole(users []*model.User) []*dto.UserRspDto {
	un := len(users)
	if un == 0 {
		return []*dto.UserRspDto{}
	}
	uids := make([]int32, un)
	userMap := make(map[int32]*dto.UserRspDto, un)
	for i, u := range users {
		uids[i] = u.ID
		userMap[u.ID] = &dto.UserRspDto{
			ID:           u.ID,
			Name:         u.Name,
			Mobile:       u.Mobile,
			RegisterTime: u.RegisterTime,
			Roles:        []*dto.AuthRoleRspDto{},
		}
	}
	// 获取角色信息
	roles, err1 := dbquery.AuthRole.Find()
	if err1 != nil {
		panic(dto.ErrorDto{Code: dto.DataOperationError, Message: err1.Error()})
	}
	roleMap := make(map[int32]*model.AuthRole, len(roles))
	for _, r := range roles {
		roleMap[r.ID] = r
	}
	// 用户角色关联信息
	utls, err2 := dbquery.AuthRoleUser.Where(dbquery.AuthRoleUser.UID.In(uids...)).Find()
	if err2 != nil {
		panic(dto.ErrorDto{Code: dto.DataOperationError, Message: err2.Error()})
	}
	// 为用户赋值角色
	for _, ul := range utls {
		u, r := userMap[ul.UID], roleMap[ul.Rid]
		if u == nil || r == nil {
			continue
		}
		u.Roles = append(u.Roles, &dto.AuthRoleRspDto{Id: r.ID, Name: r.Name})
	}
	userArr := make([]*dto.UserRspDto, un)
	i := 0
	for _, u := range userMap {
		if len(u.Roles) == 0 {
			u.Roles = append(u.Roles, dto.GetDefaultAuthRole())
		}
		userArr[i] = u
		i++
	}
	sort.SliceStable(userArr, func(i, j int) bool {
		return userArr[i].RegisterTime.Before(userArr[j].RegisterTime)
	})
	return userArr
}