package system

import (
	"context"

	"management/internal/erpserver/model/system"
	"management/internal/erpserver/repository"
)

type menuRepository struct {
	store repository.Store
}

var _ system.MenuRepository = (*menuRepository)(nil)

func NewMenuRepository(store repository.Store) *menuRepository {
	return &menuRepository{
		store: store,
	}
}

func (r *menuRepository) Create(ctx context.Context, obj *system.Menu) error {
	return r.store.DB(ctx).Create(obj).Error
}

func (r *menuRepository) Update(ctx context.Context, obj *system.Menu) error {
	return r.store.DB(ctx).Save(obj).Error
}

func (r *menuRepository) Get(ctx context.Context, id int32) (*system.Menu, error) {
	var menu system.Menu
	err := r.store.DB(ctx).Where("id = ?", id).First(&menu).Error
	if err != nil {
		return nil, err
	}
	return &menu, nil
}

func (r *menuRepository) GetByUrl(ctx context.Context, url string) (*system.Menu, error) {
	var menu system.Menu
	err := r.store.DB(ctx).Where("url = ?", url).First(&menu).Error
	if err != nil {
		return nil, err
	}
	return &menu, nil
}

func (r *menuRepository) All(ctx context.Context) ([]*system.Menu, error) {
	var menus []*system.Menu
	err := r.store.DB(ctx).Find(&menus).Error
	if err != nil {
		return nil, err
	}
	return menus, nil
}

func (r *menuRepository) RebuildParentPath(ctx context.Context) error {
	query := `UPDATE sys_menu AS tm
	SET parent_path = (SELECT ',' || string_agg(cast(t.parent_id AS VARCHAR), ',') || ','
					   FROM (WITH RECURSIVE temp (id, parent_id) AS (SELECT id, tm.parent_id
																	 FROM sys_menu
																	 WHERE id = tm.id
																	 UNION ALL
																	 SELECT sys_menu.id, sys_menu.parent_id
																	 FROM sys_menu,
																		  temp
																	 WHERE sys_menu.id = temp.parent_id)
							 SELECT id, parent_id
							 FROM temp
							 ORDER BY id) AS t)
	WHERE tm.status = 0;`
	return r.store.DB(ctx).Exec(query).Error
}