package dao

import (
	"errors"
	"fmt"
	"yintai-api/app/common/model"

	"gorm.io/gorm"
)

type Role struct {
	db *gorm.DB
}

func NewRole(db ...*gorm.DB) *Role {
	return &Role{db: getDB(db...)}
}

func (r *Role) TableName() string {
	return "yt_role"
}

func (r *Role) Create(m *model.Role) error {
	return r.db.Table(r.TableName()).Create(m).Error
}

func (r *Role) Update(m *model.Role) error {
	return r.db.Table(r.TableName()).Save(m).Error
}

func (r *Role) Delete(id int64) error {
	return r.db.Table(r.TableName()).Where("id = ?", id).Delete(&Role{}).Error
}

func (r *Role) Get(id int64) (*model.Role, error) {
	var res model.Role
	if err := r.db.Table(r.TableName()).Where("id = ?", id).First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return &res, nil
}

func (r *Role) Exists(id int64) (bool, error) {
	var count int64
	if err := r.db.Table(r.TableName()).Where("id = ?", id).Count(&count).Error; err != nil {
		return false, err
	}
	return count > 0, nil
}

func (r *Role) List(name, desc string, page, size int, sort string) ([]*model.Role, int64, error) {
	var res []*model.Role
	var count int64
	tx := r.db.Table(r.TableName())
	if name != "" {
		tx = tx.Where("name LIKE ?", fmt.Sprintf("%%%s%%", name))
	}

	if desc != "" {
		tx = tx.Where("desc LIKE ?", fmt.Sprintf("%%%s%%", desc))
	}

	if err := tx.Count(&count).Error; err != nil {
		return nil, 0, err
	}

	if sort != "" {
		tx = tx.Order(sort)
	} else {
		tx = tx.Order("id desc")
	}

	if err := tx.Offset((page - 1) * size).Limit(size).Find(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, 0, nil
		}
		return nil, 0, err
	}
	return res, count, nil
}