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new.tsx
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new.tsx
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import { Form, useActionData } from "@remix-run/react";
import {
inputClasses,
LabelText,
MinusIcon,
PlusIcon,
submitButtonClasses,
} from "~/components";
import { json, redirect } from "@remix-run/node";
import type { ActionArgs, LoaderArgs } from "@remix-run/node";
import { requireUser } from "~/session.server";
import invariant from "tiny-invariant";
import { useId, useState } from "react";
import type { LineItemFields } from "~/models/invoice.server";
import { createInvoice } from "~/models/invoice.server";
import { parseDate } from "~/utils";
import { CustomerCombobox } from "~/routes/resources/customers";
export async function loader({ request }: LoaderArgs) {
await requireUser(request);
return json({});
}
function validateCustomerId(customerId: string) {
// the database won't let us create an invoice without a customer
// so all we need to do is make sure this is not an empty string
return customerId === "" ? "Please select a customer" : null;
}
function validateDueDate(date: Date) {
if (Number.isNaN(date.getTime())) {
return "Please enter a valid date";
}
return null;
}
function validateLineItemQuantity(quantity: number) {
if (quantity <= 0) return "Must be greater than 0";
if (Number(quantity.toFixed(0)) !== quantity) {
return "Fractional quantities are not allowed";
}
return null;
}
function validateLineItemUnitPrice(unitPrice: number) {
if (unitPrice <= 0) return "Must be greater than 0";
if (Number(unitPrice.toFixed(2)) !== unitPrice) {
return "Must only have two decimal places";
}
return null;
}
export async function action({ request }: ActionArgs) {
await requireUser(request);
const formData = await request.formData();
const intent = formData.get("intent");
switch (intent) {
case "create": {
const customerId = formData.get("customerId");
const dueDateString = formData.get("dueDate");
invariant(typeof customerId === "string", "customerId is required");
invariant(typeof dueDateString === "string", "dueDate is required");
const dueDate = parseDate(dueDateString);
const lineItemIds = formData.getAll("lineItemId");
const lineItemQuantities = formData.getAll("quantity");
const lineItemUnitPrices = formData.getAll("unitPrice");
const lineItemDescriptions = formData.getAll("description");
const lineItems: Array<LineItemFields> = [];
for (let i = 0; i < lineItemQuantities.length; i++) {
const quantity = +lineItemQuantities[i];
const unitPrice = +lineItemUnitPrices[i];
const description = lineItemDescriptions[i];
invariant(typeof quantity === "number", "quantity is required");
invariant(typeof unitPrice === "number", "unitPrice is required");
invariant(typeof description === "string", "description is required");
lineItems.push({ quantity, unitPrice, description });
}
const errors = {
customerId: validateCustomerId(customerId),
dueDate: validateDueDate(dueDate),
lineItems: lineItems.reduce((acc, lineItem, index) => {
const id = lineItemIds[index];
invariant(typeof id === "string", "lineItem ids are required");
acc[id] = {
quantity: validateLineItemQuantity(lineItem.quantity),
unitPrice: validateLineItemUnitPrice(lineItem.unitPrice),
};
return acc;
}, {} as Record<string, { quantity: null | string; unitPrice: null | string }>),
};
const customerIdHasError = errors.customerId !== null;
const dueDateHasError = errors.dueDate !== null;
const lineItemsHaveErrors = Object.values(errors.lineItems).some(
(lineItem) => Object.values(lineItem).some(Boolean),
);
const hasErrors =
dueDateHasError || customerIdHasError || lineItemsHaveErrors;
if (hasErrors) {
return json({ errors });
}
const invoice = await createInvoice({ dueDate, customerId, lineItems });
return redirect(`/sales/invoices/${invoice.id}`);
}
}
return new Response(`Unsupported intent: ${intent}`, { status: 400 });
}
export default function NewInvoice() {
const actionData = useActionData<typeof action>();
return (
<div className="relative p-10">
<h2 className="font-display mb-4">New Invoice</h2>
<Form method="post" className="flex flex-col gap-4">
<CustomerCombobox error={actionData?.errors.customerId} />
<div>
<div className="flex flex-wrap items-center gap-1">
<label htmlFor="dueDate">
<LabelText>Due Date</LabelText>
</label>
{actionData?.errors.dueDate ? (
<em id="dueDate-error" className="text-d-p-xs text-red-600">
{actionData.errors.dueDate}
</em>
) : null}
</div>
<input
id="dueDate"
name="dueDate"
className={inputClasses}
type="date"
aria-invalid={Boolean(actionData?.errors.dueDate) || undefined}
aria-errormessage={
actionData?.errors.dueDate ? "dueDate-error" : undefined
}
/>
</div>
<LineItems />
<div>
<button
type="submit"
name="intent"
value="create"
className={submitButtonClasses}
>
Create Invoice
</button>
</div>
</Form>
</div>
);
}
const generateRandomId = () => Math.random().toString(32).slice(2);
function LineItems() {
const firstId = useId();
const [lineItems, setLineItems] = useState(() => [firstId]);
return (
<div className="flex flex-col gap-2">
{lineItems.map((lineItemClientId, index) => (
<LineItemFormFields
key={lineItemClientId}
lineItemClientId={lineItemClientId}
index={index}
onRemoveClick={() => {
setLineItems((lis) =>
lis.filter((id, i) => id !== lineItemClientId),
);
}}
/>
))}
<div className="mt-3 text-right">
<button
title="Add Line Item"
type="button"
onClick={() => setLineItems((lis) => [...lis, generateRandomId()])}
>
<PlusIcon />
</button>
</div>
</div>
);
}
function LineItemFormFields({
lineItemClientId,
index,
onRemoveClick,
}: {
lineItemClientId: string;
index: number;
onRemoveClick: () => void;
}) {
const actionData = useActionData<typeof action>();
const errors = actionData?.errors.lineItems[lineItemClientId];
return (
<fieldset key={lineItemClientId} className="border-b-2 py-2">
<div className="flex gap-2">
<button type="button" title="Remove Line Item" onClick={onRemoveClick}>
<MinusIcon />
</button>
<legend>Line Item {index + 1}</legend>
</div>
<input value={lineItemClientId} name="lineItemId" type="hidden" />
<div className="flex flex-col gap-1">
<div className="flex w-full gap-2">
<div className="flex-1">
<div className="flex flex-wrap items-center gap-1">
<LabelText>
<label htmlFor={`quantity-${lineItemClientId}`}>
Quantity:
</label>
</LabelText>
{errors?.quantity ? (
<em id="quantity-error" className="text-d-p-xs text-red-600">
{errors.quantity}
</em>
) : null}
</div>
<input
id={`quantity-${lineItemClientId}`}
name="quantity"
type="number"
className={inputClasses}
aria-invalid={Boolean(errors?.quantity) || undefined}
aria-errormessage={errors?.quantity ? "name-error" : undefined}
/>
</div>
<div className="flex-1">
<div className="flex flex-wrap items-center gap-1">
<LabelText>
<label htmlFor={`unitPrice-${lineItemClientId}`}>
Unit Price:
</label>
</LabelText>
{errors?.unitPrice ? (
<em id="unitPrice-error" className="text-d-p-xs text-red-600">
{errors.unitPrice}
</em>
) : null}
</div>
<input
id={`unitPrice-${lineItemClientId}`}
name="unitPrice"
type="number"
min="1"
step="any"
className={inputClasses}
aria-invalid={Boolean(errors?.unitPrice) || undefined}
aria-errormessage={errors?.unitPrice ? "name-error" : undefined}
/>
</div>
</div>
<div>
<LabelText>
<label htmlFor={`description-${lineItemClientId}`}>
Description:
</label>
</LabelText>
<input
id={`description-${lineItemClientId}`}
name="description"
className={inputClasses}
/>
</div>
</div>
</fieldset>
);
}
export function ErrorBoundary({ error }: { error: Error }) {
console.error(error);
return (
<div className="absolute inset-0 flex justify-center bg-red-100 pt-4">
<div className="text-red-brand text-center">
<div className="text-[14px] font-bold">Oh snap!</div>
<div className="px-2 text-[12px]">There was a problem. Sorry.</div>
</div>
</div>
);
}