02_advanced/uebungen/u27_zlip/index.js

@@ -3,8 +3,52 @@ import zlib from 'node:zlib';
 import color from 'chalk';
 
 const data = fs.readFileSync('data/products.csv', 'utf-8');
+const products = data.split('\n');
+const header = products.shift().split(',');
+// console.log('header', header); // => Code,Short Description,Tagline,Quantity,Price
 
-const convertCsvToJson = (products, ar) => {};
+const convertCsvToJson = (productRow) => {
+  // console.log('products', products);
+  // console.log('ar', ar);
+
+  const cols = productRow.split(/\s*,\s*/);
+  // console.log(product);
+  // let obj = {};
+
+  // for (let i = 0; i < header.length; i++) {
+  //   obj[header[i]] = cols[i];
+  // }
+
+  const product = header.reduce((obj, str, idx) => {
+    obj[str] = cols[idx];
+    return obj;
+  }, {});
+
+  return product;
+};
+
+const entries = products
+  .filter((row) => row !== '') //
+  .map(convertCsvToJson);
+console.log(entries);
+
+// fs.writeFile('a.json', JSON.stringify(entries), 'UTF-8', (err) => {
+//   console.warn(err);
+// });
+
+const compressedData = zlib.gzipSync(JSON.stringify(entries));
+try {
+  fs.writeFileSync('data/products.json.gz', compressedData);
+  console.log('compressed file');
+} catch (err) {
+  console.error(err);
+}
+
+/*
+Übung 27: Ohne Umwege
+
+Die Datei products.csv soll in eine products.json umgewandelt werden und in products.json.gz komprimiert werden.
+*/
 
 /*
 Übung 27: Ohne Umwege