Add product group analysis view

src/productParsing.ts

@@ -3,6 +3,23 @@ const sizeSet = new Set(sizeOrder);
 
 export const normalizeProductText = (value: string) => value.replace(/\s+/g, ' ').trim();
 
+export const encodeProductGroupKey = (value: string) => {
+  const normalizedValue = normalizeProductText(value);
+  const bytes = new TextEncoder().encode(normalizedValue);
+  const binary = Array.from(bytes, byte => String.fromCharCode(byte)).join('');
+
+  return btoa(binary).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/g, '');
+};
+
+export const decodeProductGroupKey = (value: string) => {
+  const base64 = value.replace(/-/g, '+').replace(/_/g, '/');
+  const paddedBase64 = base64.padEnd(Math.ceil(base64.length / 4) * 4, '=');
+  const binary = atob(paddedBase64);
+  const bytes = Uint8Array.from(binary, character => character.charCodeAt(0));
+
+  return normalizeProductText(new TextDecoder().decode(bytes));
+};
+
 export const sortProductSizes = (sizes: string[]) => [...sizes].sort((a, b) => {
   const indexA = sizeOrder.indexOf(a);
   const indexB = sizeOrder.indexOf(b);