golang-fave/modules/module_shop_act_upload_delete.go

package modules

import (
	"os"

	"golang-fave/engine/wrapper"
	"golang-fave/utils"
)

func (this *Modules) RegisterAction_ShopUploadDelete() *Action {
	return this.newAction(AInfo{
		WantDB:    true,
		Mount:     "shop-upload-delete",
		WantAdmin: true,
	}, func(wrap *wrapper.Wrapper) {
		pf_id := wrap.R.FormValue("id")
		pf_file := wrap.R.FormValue("file")

		if !utils.IsNumeric(pf_id) {
			wrap.MsgError(`Inner system error`)
			return
		}

		if pf_file == "" {
			wrap.MsgError(`Inner system error`)
			return
		}

		if err := wrap.DB.Transaction(func(tx *wrapper.Tx) error {
			// Block rows
			if _, err := tx.Exec("SELECT id FROM shop_products WHERE id = ? FOR UPDATE;", pf_id); err != nil {
				return err
			}
			if _, err := tx.Exec("SELECT product_id FROM shop_product_images WHERE product_id = ? FOR UPDATE;", pf_id); err != nil {
				return err
			}

			// Delete row
			if _, err := tx.Exec("DELETE FROM shop_product_images WHERE product_id = ? AND filename = ?;", pf_id, pf_file); err != nil {
				return err
			}

			// Delete file
			target_file_full := wrap.DHtdocs + string(os.PathSeparator) + "products" + string(os.PathSeparator) + "images" + string(os.PathSeparator) + pf_id + string(os.PathSeparator) + pf_file
			os.Remove(target_file_full)

			return nil
		}); err != nil {
			wrap.MsgError(err.Error())
			return
		}
	})
}