feat: add redirect processing script

apps/scandic-redirect/scripts/update.mjs

@@ -0,0 +1,138 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+import csvToJson from 'convert-csv-to-json';
+
+const langs = ['da', 'de', 'en', 'fi', 'no', 'sv'];
+const csvHeaders = {
+  current: 'Current URL',
+  redirect: 'Redirect URL',
+};
+
+function csvFilePath(lang) {
+  return `${import.meta.dirname}/csv/${lang}.csv`;
+}
+
+function jsonFilePath(lang) {
+  return `${import.meta.dirname}/json/${lang}.json`;
+}
+
+function outputFilepath(lang) {
+  return path.resolve(
+    import.meta.dirname,
+    `../netlify/functions/data/${lang}.json`
+  );
+}
+
+function removeDomain(str) {
+  return str.replace(
+    /^https?:\/\/((www|test|stage|prod)\.)?scandichotels.(com|de|dk|fi|no|se)/,
+    ''
+  );
+}
+
+function akamaiRedirect(str) {
+  return str.replace(
+    /^https?:\/\/((www|test|stage|prod)\.)?scandichotels.(com|de|dk|fi|no|se)/,
+    (...match) => {
+      if (match[3]) {
+        switch (match[3]) {
+          case 'com':
+            return '/en';
+          case 'de':
+            return '/de';
+          case 'dk':
+            return '/da';
+          case 'fi':
+            return '/fi';
+          case 'no':
+            return '/no';
+          case 'se':
+            return '/sv';
+        }
+      }
+      return '';
+    }
+  );
+}
+
+function checkPrerequisites() {
+  const missingLangs = langs.reduce((acc, lang) => {
+    const filepath = csvFilePath(lang);
+    if (!fs.existsSync(filepath)) {
+      acc.push(filepath);
+    }
+    return acc;
+  }, []);
+
+  if (missingLangs.length > 0) {
+    console.error(`Missing CSV file:\n${missingLangs.join('\n')}`);
+    process.exit(1);
+  }
+}
+
+// convert-csv-to-json writes async without callback support
+// so we workaround it be overriding console.log which it uses when it is done
+async function convertCsvToJson() {
+  return new Promise((resolve, reject) => {
+    const _consoleLog = console.log;
+    let resolved = 0;
+    console.log = function (str) {
+      if (str.indexOf('File saved:') >= 0) {
+        resolved++;
+      }
+
+      if (resolved === langs.length) {
+        console.log = _consoleLog;
+        resolve();
+      }
+    };
+
+    for (const lang of langs) {
+      csvToJson
+        .utf8Encoding()
+        .fieldDelimiter(',')
+        .generateJsonFileFromCsv(csvFilePath(lang), jsonFilePath(lang));
+    }
+
+    setTimeout(() => {
+      reject('timeout');
+    }, 5000);
+  });
+}
+
+async function makeOutput() {
+  for (const lang of langs) {
+    try {
+      const json = JSON.parse(
+        fs.readFileSync(jsonFilePath(lang), {
+          encoding: 'utf-8',
+        })
+      );
+
+      if (Array.isArray(json)) {
+        const finalUrls = json.reduce((acc, url) => {
+          const from = removeDomain(akamaiRedirect(url[csvHeaders.current]));
+          const to = removeDomain(url[csvHeaders.redirect]);
+
+          return {
+            ...acc,
+            [from]: to,
+          };
+        }, {});
+
+        fs.writeFileSync(outputFilepath(lang), JSON.stringify(finalUrls), {
+          encoding: 'utf-8',
+        });
+      } else {
+        throw new Error(`JSON was not an array: ${jsonFilePath(lang)}`);
+      }
+    } catch (e) {
+      console.error(e);
+    }
+  }
+}
+
+checkPrerequisites();
+await convertCsvToJson();
+await makeOutput();