feat: add redirect processing script

apps/scandic-redirect/.gitignore

@@ -0,0 +1,2 @@
+scripts/csv/*.csv
+scripts/json/*.json

apps/scandic-redirect/README.md

@@ -6,3 +6,20 @@ This function will be called by the `web` app's middleware to check if the incom
 The "source of truth" for which URLs should be redirected where will be provided by the SEO team and put in a JSON file within this app.
 
 If no match for the incoming request is found, the request is passed on through the middleware.
+
+## Update the redirects from the source
+
+The Excel source file used is located at:
+
+https://scandichotelsab.sharepoint.com/:x:/s/921-ContentNewweb/ETGStOQAARtJhJXG9dy8ijYBccpmKhLVjS2SF_2E69QrAQ
+
+- Open it
+- Each domain/language has its own sheet
+- Export each sheet into their respective language code
+  - File > Export > Download as CSV UTF-8
+  - Save as [lang].csv in `./scripts/csv` folder
+- Run the `update` script target
+  - E.g. `yarn workspace @scandic-hotels/scandic-redirect update`
+- Commit and push the JSON files in `./netlify/functions/data`.
+- Create a PR
+- Profit!

apps/scandic-redirect/package.json

@@ -5,5 +5,11 @@
   "packageManager": "yarn@4.6.0",
   "dependencies": {
     "@netlify/functions": "^3.0.0"
+  },
+  "devDependencies": {
+    "convert-csv-to-json": "^3.4.0"
+  },
+  "scripts": {
+    "update": "node ./scripts/update.mjs"
   }
 }

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();

yarn.lock

@@ -7052,6 +7052,7 @@ __metadata:
   resolution: "@scandic-hotels/scandic-redirect@workspace:apps/scandic-redirect"
   dependencies:
     "@netlify/functions": "npm:^3.0.0"
+    convert-csv-to-json: "npm:^3.4.0"
   languageName: unknown
   linkType: soft
 
@@ -11775,6 +11776,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"convert-csv-to-json@npm:^3.4.0":
+  version: 3.4.0
+  resolution: "convert-csv-to-json@npm:3.4.0"
+  checksum: 10c0/06ec3cb348591322b9b2083464eff41907688d6eb4cb8b364d7d969ea08eb559d872733292034f72dcf404fe3150def092194ccfe14d89ded3b35dfc694fdb87
+  languageName: node
+  linkType: hard
+
 "convert-source-map@npm:^2.0.0":
   version: 2.0.0
   resolution: "convert-source-map@npm:2.0.0"