1 files changed, 76 insertions, 0 deletions
diff --git a/lib/utils.js b/lib/utils.js
index c68d222b..389f8a57 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -75,4 +75,80 @@ export let getInvoice = async (hash) => {
   if (iid && iid.id) iid = iid.id;
   else if (iid && iid.hash) iid = iid.hash;
   return await g(`invoice:${iid}`);
+};
+
+export let f = (s, currency) =>
+  new Intl.NumberFormat("en-US", {
+    style: "currency",
+    currency,
+  })
+    .format(s)
+    .replace("CA", "");
+
+export function formatReceipt(items, currency) {
+function wrapText(text, maxWidth) {
+  const words = text.split(" ");
+  const lines = [];
+  let currentLine = "";
+  words.forEach((word) => {
+    if (currentLine.length + word.length + 1 > maxWidth) {
+      lines.push(currentLine);
+      currentLine = word;
+    } else {
+      currentLine += (currentLine.length > 0 ? " " : "") + word;
+    }
+  });
+  if (currentLine) lines.push(currentLine);
+  return lines;
 }
+
+function calculateColumnWidths(items) {
+  let maxQuantityLength = 0;
+  let maxPriceLength = 0;
+
+  items.forEach((item) => {
+    const quantityLength = String(item.quantity).length;
+    if (quantityLength > maxQuantityLength) {
+      maxQuantityLength = quantityLength;
+    }
+
+    const priceLength = f(item.price * item.quantity, currency).length;
+    if (priceLength > maxPriceLength) {
+      maxPriceLength = priceLength;
+    }
+  });
+
+  // Add padding to the widths for aesthetic spacing
+  return {
+    quantityColumnWidth: maxQuantityLength + 1, // Space after quantity
+    priceColumnWidth: maxPriceLength + 1, // Space before price
+  };
+}
+  const maxLineWidth = 32;
+  const { quantityColumnWidth, priceColumnWidth } = calculateColumnWidths(
+    items,
+  );
+  const nameColumnWidth = maxLineWidth - quantityColumnWidth - priceColumnWidth;
+
+  return items
+    .map((item) => {
+      const quantityStr = String(item.quantity).padEnd(quantityColumnWidth);
+      const priceStr = f(item.price * item.quantity, currency).padStart(
+        priceColumnWidth,
+      );
+      const nameLines = wrapText(item.name, nameColumnWidth);
+
+      // Construct the full line(s) with the first line including the price
+      let fullLines = [
+        `${quantityStr}${nameLines[0].padEnd(nameColumnWidth)}${priceStr}`,
+      ];
+      // Add any additional name lines, properly indented
+      for (let i = 1; i < nameLines.length; i++) {
+        fullLines.push(" ".repeat(quantityColumnWidth) + nameLines[i]);
+      }
+
+      return fullLines.join("\n");
+    })
+    .join("\n\n");
+}
+