package biz

import (
	"context"
	"time"

	"github.com/guxuan/hailin_service/internal/mods/rbac/dal"
	"github.com/guxuan/hailin_service/internal/mods/rbac/schema"
	"github.com/guxuan/hailin_service/pkg/cachex"
	"github.com/guxuan/hailin_service/pkg/errors"
	"github.com/guxuan/hailin_service/pkg/util"
)

type Product struct {
	Cache              cachex.Cacher
	Trans              *util.Trans
	ProductDAL         *dal.Product
	ProductCategoryDAL *dal.ProductCategory
}

func (a *Product) QueryProductCategory(ctx context.Context) (*[]schema.ProductCategory, error) {
	query, err := a.ProductCategoryDAL.Query(ctx)
	if err != nil {
		return nil, err
	}
	return query, nil
}

func (a *Product) Query(ctx context.Context, params schema.ProductQueryParam) (*schema.ProductQueryResult, error) {
	params.Pagination = true
	result, err := a.ProductDAL.Query(ctx, params, schema.ProductQueryOptions{
		QueryOptions: util.QueryOptions{
			OrderFields: []util.OrderByParam{
				{Field: "sequence", Direction: util.DESC},
			},
		},
	})
	if err != nil {
		return nil, err
	}
	return result, nil
}

func (a *Product) Get(ctx context.Context, id string) (*schema.Product, error) {
	product, err := a.ProductDAL.Get(ctx, id)
	if err != nil {
		return nil, err
	} else if product == nil {
		return nil, errors.NotFound("", "Banner not found")
	}

	return product, nil
}

func (a *Product) Create(ctx context.Context, formItem *schema.ProductForm) (*schema.Product, error) {

	product := &schema.Product{
		ID:        util.NewXID(),
		CreatedAt: time.Now(),
	}
	if err := formItem.FillTo(product); err != nil {
		return nil, err
	}

	if err := a.ProductDAL.Create(ctx, product); err != nil {
		return nil, err
	}

	return product, nil
}

func (a *Product) Update(ctx context.Context, id string, formItem *schema.ProductForm) error {
	product, err := a.ProductDAL.Get(ctx, id)
	if err != nil {
		return err
	}

	if err := formItem.FillTo(product); err != nil {
		return err
	}
	product.UpdatedAt = time.Now()

	if err := a.ProductDAL.Update(ctx, product); err != nil {
		return err
	}
	return nil
}

func (a *Product) Delete(ctx context.Context, id string) error {
	exists, err := a.ProductDAL.Exists(ctx, id)
	if err != nil {
		return err
	} else if !exists {
		return errors.NotFound("", "Role not found")
	}

	if err := a.ProductDAL.Delete(ctx, id); err != nil {
		return err
	}
	return nil

}