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/*
This file is part of GNU Taler
(C) 2021 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 <http://www.gnu.org/licenses/>
*/
import { h, VNode } from "preact";
import { useState } from "preact/hooks";
import { FormProvider, FormErrors } from "../form/FormProvider.js";
import { InputNumber } from "../form/InputNumber.js";
import { InputSearchProduct } from "../form/InputSearchProduct.js";
import { MerchantBackend, WithId } from "../../declaration.js";
import { Translate, useTranslator } from "../../i18n";
import { ProductMap } from "../../paths/instance/orders/create/CreatePage.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<Partial<Form>>(initialState)
const [errors, setErrors] = useState<FormErrors<Form>>({})
const i18n = useTranslator()
const productWithInfiniteStock = state.product && state.product.total_stock === -1
const submit = (): void => {
if (!state.product) {
setErrors({ product: i18n`You must enter a valid product identifier.` });
return;
}
if (productWithInfiniteStock) {
onAddProduct(state.product, 1)
} else {
if (!state.quantity || state.quantity <= 0) {
setErrors({ quantity: i18n`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`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`This quantity exceeds remaining stock. Currently, only ${left} units remain unreserved in stock.` });
return;
}
onAddProduct(state.product, state.quantity)
}
}
setState(initialState)
}
return <FormProvider<Form> errors={errors} object={state} valueHandler={setState}>
<InputSearchProduct selected={state.product} onChange={(p) => setState(v => ({ ...v, product: p }))} products={inventory} />
{ state.product && <div class="columns mt-5">
<div class="column is-two-thirds">
{!productWithInfiniteStock &&
<InputNumber<Form> name="quantity" label={i18n`Quantity`} tooltip={i18n`how many products will be added`} />
}
</div>
<div class="column">
<div class="buttons is-right">
<button class="button is-success" onClick={submit}><Translate>Add from inventory</Translate></button>
</div>
</div>
</div> }
</FormProvider>
}
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