/*
This file is part of GNU Taler
(C) 2021-2023 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see
*/
import { useTranslationContext } from "@gnu-taler/web-util/browser";
import { h, VNode } from "preact";
import { useState } from "preact/hooks";
import { MerchantBackend, WithId } from "../../declaration.js";
import { ProductMap } from "../../paths/instance/orders/create/CreatePage.js";
import { FormErrors, FormProvider } from "../form/FormProvider.js";
import { InputNumber } from "../form/InputNumber.js";
import { InputSearchOnList } from "../form/InputSearchOnList.js";
type Form = {
product: MerchantBackend.Products.ProductDetail & WithId;
quantity: number;
};
interface Props {
currentProducts: ProductMap;
onAddProduct: (
product: MerchantBackend.Products.ProductDetail & WithId,
quantity: number,
) => void;
inventory: (MerchantBackend.Products.ProductDetail & WithId)[];
}
export function InventoryProductForm({
currentProducts,
onAddProduct,
inventory,
}: Props): VNode {
const initialState = { quantity: 1 };
const [state, setState] = useState>(initialState);
const [errors, setErrors] = useState>({});
const { i18n } = useTranslationContext();
const productWithInfiniteStock =
state.product && state.product.total_stock === -1;
const submit = (): void => {
if (!state.product) {
setErrors({
product: i18n.str`You must enter a valid product identifier.`,
});
return;
}
if (productWithInfiniteStock) {
onAddProduct(state.product, 1);
} else {
if (!state.quantity || state.quantity <= 0) {
setErrors({ quantity: i18n.str`Quantity must be greater than 0!` });
return;
}
const currentStock =
state.product.total_stock -
state.product.total_lost -
state.product.total_sold;
const p = currentProducts[state.product.id];
if (p) {
if (state.quantity + p.quantity > currentStock) {
const left = currentStock - p.quantity;
setErrors({
quantity: i18n.str`This quantity exceeds remaining stock. Currently, only ${left} units remain unreserved in stock.`,
});
return;
}
onAddProduct(state.product, state.quantity + p.quantity);
} else {
if (state.quantity > currentStock) {
const left = currentStock;
setErrors({
quantity: i18n.str`This quantity exceeds remaining stock. Currently, only ${left} units remain unreserved in stock.`,
});
return;
}
onAddProduct(state.product, state.quantity);
}
}
setState(initialState);
};
return (
errors={errors} object={state} valueHandler={setState}>
setState((v) => ({ ...v, product: p }))}
list={inventory}
withImage
/>
{state.product && (
{!productWithInfiniteStock && (
name="quantity"
label={i18n.str`Quantity`}
tooltip={i18n.str`how many products will be added`}
/>
)}