package course

import (
	"errors"
	"zhiyuan/models"
	"zhiyuan/pkg/app"
	"zhiyuan/pkg/db"
	"zhiyuan/pkg/utils"
	"zhiyuan/services/form"
)

var Course models.Course

func Add(form form.CourseAdd) (int64, error) {

	courseMap := map[string]interface{}{
		"`name`":     form.Name,
		"`intro`":    form.Intro,
		"`type`":     form.Type,
		"`role_ids`": utils.JoinIntSlice(form.RoleIds, ","),
		"`checks`":   form.Checks,
		"`show`":     form.Show,
	}
	courseID, err := db.InsertOne(Course.TableName(), courseMap)
	if err != nil {
		return 0, nil
	}
	return courseID, nil
}

func EditByID(form form.CourseAdd, id int) error {
	info, err := GetInfoByID(id, nil, nil)
	if info == nil {
		return errors.New("invalid id")
	}

	courseMap := map[string]interface{}{
		"`name`":     form.Name,
		"`intro`":    form.Intro,
		"`type`":     form.Type,
		"`role_ids`": utils.JoinIntSlice(form.RoleIds, ","),
		"`checks`":   form.Checks,
		"`show`":     form.Show,
	}
	_, err = db.Update(Course.TableName(), map[string]interface{}{"id": id}, courseMap)
	return err
}

func DeleteByID(id int) error {
	info, _ := GetInfoByID(id, nil, nil)
	if info == nil {
		return errors.New("invalid id")
	}

	_, err := db.DeleteSoft(Course.TableName(), map[string]interface{}{"id": id})
	return err
}

func Count(where map[string]interface{}) (int64, error) {
	return db.Count(Course.TableName(), where)
}

func CountRaw(where string, param map[string]interface{}) (int64, error) {
	query := "`zy_course` WHERE " + where
	return db.CountRaw(query, param)
}

func GetList(where map[string]interface{}, fields []string, page app.Page, retVal interface{}) ([]*models.Course, error) {
	if page.PageNum > 0 && page.PageSize > 0 {
		where["_limit"] = db.GetOffset(uint(page.PageNum), uint(page.PageSize))
	}
	return Course.GetMulti(where, fields, retVal)
}

func GetCoursesRaw(where map[string]string, param map[string]interface{}, retVal interface{}) error {
	field := "SELECT `zy_course`.*, group_concat(`zy_role`.`name` separator ',') as role_names FROM `zy_course` left join `zy_role` on FIND_IN_SET(`zy_role`.`id`, `zy_course`.`role_ids`) "
	return db.GetMultiRaw(field, where, param, retVal)
}

func GetOne(where map[string]interface{}, fields []string, retVal interface{}) (*models.Course, error) {
	return Course.GetOne(where, fields, retVal)
}

func GetCourseOne(where map[string]string, param map[string]interface{}, retVal interface{}) error {
	field := "SELECT `zy_course`.*, group_concat(`zy_role`.`name` separator ',') as role_names FROM `zy_course` left join `zy_role` on FIND_IN_SET(`zy_role`.`id`, `zy_course`.`role_ids`) "
	where["_page_size"] = utils.ToStr(1)
	where["_page_num"] = utils.ToStr(1)
	return db.GetMultiRaw(field, where, param, retVal)
}

func GetCourseByID(id int, retVal interface{}) error {
	where := map[string]string{
		"where": "`zy_course`.`id` = {{id}}",
	}
	param := map[string]interface{}{"id": id}
	return GetCourseOne(where, param, retVal)
}

func GetInfoByID(id int, fields []string, retVal interface{}) (*models.Course, error) {
	return GetOne(map[string]interface{}{"id": id}, fields, retVal)
}