package scripts

import (
	"fmt"
	"mygo/dbhelper"
	"mygo/libs"
	"mygo/model"
	"mygo/response"
	"mygo/say"
	"mygo/validator"
	"strconv"

	"github.com/labstack/echo/v4"
	"gorm.io/gorm"
)

//获取角色下的用户列表
func GetUsersByRoleId(c echo.Context) error {
	id := c.QueryParam("id")
	role_id := c.QueryParam("role_id")
	data := response.AdminListResponse{}
	if id == "" || role_id == "" {
		return say.Success(c, 10001, data)
	}

	page, _ := strconv.Atoi(c.QueryParam("page"))
	if page <= 0 {
		page = 1
	}
	limit, _ := strconv.Atoi(c.QueryParam("limit"))

	if limit <= 0 {
		limit = 10
	}

	db := dbhelper.GetMySqlDB()

	var count int64 = 0

	db.Where("role_id = ?", role_id).Find(&model.UserRole{}).Count(&count)

	offset := (page - 1) * limit
	users, _ := model.GetUsersByRoleId(db, role_id, offset, limit)
	data.Users = users
	data.Count = count

	return say.Success(c, 0, data)
}

func GetRoleByUserId(c echo.Context) error {
	id := c.QueryParam("id")
	user_id := c.QueryParam("user_id")
	data := response.GetRoleResponse{}
	if id == "" {
		return say.Success(c, 10001, data)
	}

	if user_id == "" {
		user_id = id
	}

	db := dbhelper.GetMySqlDB()

	r, err := model.GetRoleByUserId(db, user_id)

	if err != nil {
		return say.Success(c, 10000, data)
	}

	if r.RoleID == "" {
		return say.Success(c, 10006, data)
	}

	role, err := model.GetRoleById(db, r.RoleID)

	if err != nil {
		return say.Success(c, 10000, data)
	}

	if role.ID == "" {
		return say.Success(c, 10006, data)
	}

	data.Role = role
	return say.Success(c, 0, data)
}

//角色批量绑定用户
func RoleBindUser(c echo.Context) error {
	data := response.NoneResponse{}
	body := &validator.RoleBindUserBody{}
	err := c.Bind(body)
	if err != nil {
		return say.Success(c, 10000, data)
	}
	id := c.QueryParam("id")
	if id == "" || len(body.Users) <= 0 || body.RoleID == "" {
		return say.Success(c, 10001, data)
	}

	db := dbhelper.GetMySqlDB()

	role_id := body.RoleID
	role, err := model.GetRoleById(db, role_id)
	if err != nil || role.ID == "" {
		return say.Success(c, 10006, data)
	}

	//启动事务
	txerr := db.Transaction(func(tx *gorm.DB) error {
		// 在事务中执行一些 db 操作（从这里开始，您应该使用 'tx' 而不是 'db'）

		for _, user_id := range body.Users {

			r, err := model.GetUserRole(tx, user_id, role_id)
			if err != nil {
				return err
			}

			if r.ID != "" {
				continue
			}

			route := model.UserRole{
				ID:     libs.GenId(),
				UserID: user_id,
				RoleID: role_id,
			}

			if err := tx.Create(&route).Error; err != nil {
				// 返回任何错误都会回滚事务
				return err
			}
		}

		// 返回 nil 提交事务
		return nil
	})

	if txerr != nil {
		return say.Success(c, 10000, data)
	}

	return say.Success(c, 0, data)
}

//用户绑定角色
func UserBindRole(c echo.Context) error {
	data := response.NoneResponse{}
	body := &validator.UserBindRoleBody{}
	err := c.Bind(body)
	if err != nil {
		return say.Success(c, 10000, data)
	}
	id := c.QueryParam("id")
	if id == "" || body.UserID == "" || body.RoleID == "" {
		return say.Success(c, 10001, data)
	}

	db := dbhelper.GetMySqlDB()

	user_id := body.UserID

	user, err := model.GetUserById(db, user_id)
	if err != nil || user.ID == "" {
		return say.Success(c, 10004, data)
	}

	role_id := body.RoleID
	role, err := model.GetRoleById(db, role_id)

	if err != nil || role.ID == "" {
		return say.Success(c, 10006, data)
	}

	r, err := model.GetRoleByUserId(db, user_id)

	if err != nil || r.ID != "" {
		a := model.UserRole{
			UserID: user_id,
			RoleID: r.RoleID,
		}
		if err := db.Delete(&model.UserRole{}, &a).Error; err != nil {
			return say.Success(c, 10000, data)
		}
	}

	a := model.UserRole{
		ID:     libs.GenId(),
		UserID: user_id,
		RoleID: role_id,
	}

	if err := db.Create(&a).Error; err != nil {
		fmt.Println("插入失败 err=", err)
		return say.Success(c, 10011, data)
	}

	return say.Success(c, 0, data)
}

//用户绑定角色通过code
func UserBindByRoleCode(c echo.Context) error {

	data := response.NoneResponse{}
	body := &validator.UserBindByRoleCodeBody{}
	err := c.Bind(body)
	if err != nil {
		return say.Success(c, 10000, data)
	}
	id := c.QueryParam("id")
	if id == "" || body.UserID == "" || body.RoleCode == "" {
		return say.Success(c, 10001, data)
	}

	db := dbhelper.GetMySqlDB()

	user_id := body.UserID

	user, err := model.GetUserById(db, user_id)
	if err != nil || user.ID == "" {
		return say.Success(c, 10004, data)
	}

	role_code := body.RoleCode
	role, err := model.GetRoleByCode(db, role_code)

	if err != nil || role.ID == "" {
		return say.Success(c, 10006, data)
	}

	r, err := model.GetRoleByUserId(db, user_id)

	if err != nil || r.ID != "" {
		a := model.UserRole{
			UserID: user_id,
			RoleID: r.RoleID,
		}
		if err := db.Delete(&model.UserRole{}, &a).Error; err != nil {
			return say.Success(c, 10000, data)
		}
	}

	a := model.UserRole{
		ID:     libs.GenId(),
		UserID: user_id,
		RoleID: role.ID,
	}

	if err := db.Create(&a).Error; err != nil {
		fmt.Println("插入失败 err=", err)
		return say.Success(c, 10011, data)
	}

	return say.Success(c, 0, data)
}

//解除用户和角色的绑定
func DelRoleBind(c echo.Context) error {
	data := response.NoneResponse{}
	body := &validator.UserBindRoleBody{}
	err := c.Bind(body)
	if err != nil {
		return say.Success(c, 10000, data)
	}
	id := c.QueryParam("id")
	if id == "" || body.UserID == "" || body.RoleID == "" {
		return say.Success(c, 10001, data)
	}

	db := dbhelper.GetMySqlDB()

	user_id := body.UserID

	role_id := body.RoleID

	a := model.UserRole{
		UserID: user_id,
		RoleID: role_id,
	}

	if err := db.Delete(&model.UserRole{}, &a).Error; err != nil {
		return say.Success(c, 10023, data)
	}

	return say.Success(c, 0, data)
}