From 74739a2a7a0894dcc6123e3f901591cfe80a6d83 Mon Sep 17 00:00:00 2001
From: Katja Lutz <mail@katjalutz.ch>
Date: Wed, 22 Jun 2022 21:39:18 +0200
Subject: [PATCH] feat: implement swiss invoice component

---
 src/components/SwissInvoice.tsx | 221 ++++++++++++++++++++++++++++++++
 1 file changed, 221 insertions(+)
 create mode 100644 src/components/SwissInvoice.tsx

diff --git a/src/components/SwissInvoice.tsx b/src/components/SwissInvoice.tsx
new file mode 100644
index 0000000..6ca0fb5
--- /dev/null
+++ b/src/components/SwissInvoice.tsx
@@ -0,0 +1,221 @@
+import { Component, FlowComponent, JSX, Show } from "solid-js";
+import Address, { AddressData } from "./Address";
+import SwissQrCode from "./SwissQrCode";
+
+export type InvoiceData = {
+  iban: string;
+  amount: number;
+  amountBeforeTax: number;
+  tax: number;
+  currency: string;
+  message?: string;
+  reference?: string;
+  referenceType?: "QRR" | "SCOR" | "NON";
+  creditor: AddressData;
+  debtor?: AddressData;
+};
+
+export const formatAmount = (amount: number) => {
+  return amount
+    .toLocaleString("de-CH", {
+      minimumFractionDigits: 2,
+      maximumFractionDigits: 2,
+    })
+    .replaceAll("’", " ");
+};
+
+const spaceEveryX = (text: string, x = 4, reverse = false) => {
+  text = text.replaceAll(" ", "");
+
+  let result: string[] = [];
+
+  let chars = text.split("");
+
+  if (reverse) {
+    chars = chars.reverse();
+  }
+
+  chars.forEach(function (v, i) {
+    if (i % x === 0) {
+      result.push(" ");
+    }
+    result.push(v);
+  });
+
+  if (reverse) {
+    result = result.reverse();
+  }
+
+  return result.join("");
+};
+
+const encodeSwissQrInvoice = (
+  invoiceData: InvoiceData,
+  { type = "SPC" } = {}
+) => {
+  const VERSION = "0220"; // 2.20
+  const CODING = 1; // utf-8
+  const END_INDICATOR = "EPD";
+
+  const creditorType = invoiceData.creditor.type || "S";
+  const debtorType = invoiceData.debtor?.type || "S";
+
+  const header: string[] = [type, VERSION, CODING.toString()];
+  const creditor: string[] = [
+    invoiceData.iban.replaceAll(" ", ""),
+    creditorType,
+    invoiceData.creditor.name,
+    invoiceData.creditor.line1 || "",
+    invoiceData.creditor.line2 || "",
+    invoiceData.creditor.type === "S"
+      ? (invoiceData.creditor.zip || 0).toString()
+      : "",
+    creditorType ? invoiceData.creditor.city || "" : "",
+    invoiceData.creditor.country,
+  ];
+  const ultimateCreditor: string[] = [
+    "", // type
+    "", // name
+    "", // line 1
+    "", // line 2
+    "", // zip
+    "", // city
+    "", // country
+  ];
+  const amount: string[] = [
+    invoiceData.amount.toFixed(2),
+    invoiceData.currency,
+  ];
+  const debtor: string[] = [
+    debtorType ? invoiceData.debtor?.type || "" : "",
+    invoiceData.debtor?.name || "",
+    invoiceData.debtor?.line1 || "",
+    invoiceData.debtor?.line2 || "",
+    (invoiceData.debtor?.zip || "").toString(),
+    invoiceData.debtor?.city || "",
+    invoiceData.debtor?.country || "",
+  ];
+  const referenceType = !invoiceData.reference
+    ? "NON"
+    : invoiceData.referenceType ||
+      (invoiceData.reference.startsWith("RF") ? "SCOR" : "QRR");
+  const reference: string[] = [
+    referenceType,
+    (invoiceData.reference || "").replaceAll(" ", ""),
+  ];
+
+  const invoice = [
+    header,
+    creditor,
+    ultimateCreditor,
+    amount,
+    debtor,
+    reference,
+    invoiceData.message || "",
+    END_INDICATOR,
+  ]
+    .flat()
+    .join("\n");
+
+  return invoice;
+};
+
+const SwissInvoice: Component<
+  { value: InvoiceData } & JSX.HTMLAttributes<HTMLElement>
+> = (props) => {
+  const HeaderEz: FlowComponent = (props) => (
+    <div class="text-lg leading-normal font-bold mb-3">{props.children}</div>
+  );
+  const HeaderZ: FlowComponent = (props) => (
+    <div class="text-sm leading-normal font-bold">{props.children}</div>
+  );
+  const HeaderE: FlowComponent = (props) => (
+    <div class="text-xs leading-normal font-bold">{props.children}</div>
+  );
+
+  return (
+    <div class="break-inside-avoid">
+      <div class="swissinvoice hyphenate break-normal break-all -max-w-[1200px] aspect-[2/1] print:w-full flex-shrink-0 text-left print:text-black text-sm bg-white border-y border-black border-dashed grid grid-flow-col grid-cols-[29.5%_26.5%_auto] grid-rows-[auto_auto_1fr]">
+        <div class="col-span-1 row-span-1 p-10 pb-0 border-r border-black border-dashed">
+          <HeaderEz>Empfangsschein</HeaderEz>
+          <div class="leading-tight flex flex-col gap-4">
+            <div>
+              <HeaderE>Konto / Zahlbar an</HeaderE>
+              <div>{spaceEveryX(props.value.iban)}</div>
+              <Address address={props.value.creditor} />
+            </div>
+            <Show when={props.value.reference}>
+              <div>
+                <HeaderE>Referenz</HeaderE>
+                <div>{spaceEveryX(props.value.reference!)}</div>
+              </div>
+            </Show>
+            <Show when={props.value.debtor}>
+              <div>
+                <HeaderE>Zahlbar durch</HeaderE>
+                <Address address={props.value.debtor!} />
+              </div>
+            </Show>
+          </div>
+        </div>
+        <div class="col-span-1 row-span-2 p-10 pt-10 border-r border-black border-dashed">
+          <div class="grid grid-cols-2 gap-x-2">
+            <HeaderE>Währung</HeaderE>
+            <HeaderE>Betrag</HeaderE>
+            <div>{props.value.currency}</div>
+            <div>{formatAmount(props.value.amount)}</div>
+          </div>
+          <div class="text-right text-xs font-bold mt-10 leading-tight">
+            Annahmestelle
+          </div>
+        </div>
+
+        <div class="col-span-1 row-span-1 pt-10 pl-10">
+          <HeaderEz>Zahlteil</HeaderEz>
+          <SwissQrCode
+            value={encodeSwissQrInvoice(props.value)}
+            class="w-full aspect-square"
+          />
+        </div>
+        <div class="col-span-1 row-span-1 pt-10 pl-10 pb-10">
+          <div class="grid grid-cols-2 gap-x-2">
+            <HeaderZ>Währung</HeaderZ>
+            <HeaderZ>Betrag</HeaderZ>
+            <div>{props.value.currency}</div>
+            <div>{formatAmount(props.value.amount)}</div>
+          </div>
+        </div>
+
+        <div class="col-span-2 pl-10"></div>
+
+        <div class="leading-tight text-base col-span-1 row-span-2 p-10 flex flex-col gap-4">
+          <div>
+            <HeaderZ>Konto / Zahlbar an</HeaderZ>
+            <div>{spaceEveryX(props.value.iban)}</div>
+            <Address address={props.value.creditor} />
+          </div>
+          <Show when={props.value.reference}>
+            <div>
+              <HeaderZ>Referenz</HeaderZ>
+              <div>{spaceEveryX(props.value.reference!)}</div>
+            </div>
+          </Show>
+          <Show when={props.value.message}>
+            <div>
+              <HeaderZ>Zusätzliche Informationen</HeaderZ>
+              <div>{props.value.message}</div>
+            </div>
+          </Show>
+          <Show when={props.value.debtor}>
+            <div>
+              <HeaderE>Zahlbar durch</HeaderE>
+              <Address address={props.value.debtor!} />
+            </div>
+          </Show>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default SwissInvoice;