add redirections script

Author: Melissa Garcia

buildRedirections.js

@@ -0,0 +1,53 @@
+const path = require('path');
+const fs = require('node:fs');
+const { pathPrefix } = require('./gatsby-config.js');
+const { globSync }= require('glob');
+
+try {
+    if(!pathPrefix) {
+        throw new TypeError("pathPrefix not found");
+    } 
+
+    let results = globSync(__dirname + '/src/pages/**/*.md');
+    let data = [];
+
+    results.forEach(result => {
+        const nonNormalizedMdFilePath = result.replace(__dirname + '/src/pages', pathPrefix);
+        const mdFilePath = path.resolve(nonNormalizedMdFilePath);
+
+        // Fixes paths that don't end in a trailing slash but should.
+        // index.md has a directory-level URL that needs a trailing slash
+        if(mdFilePath.includes('index.md')) {
+            const source = mdFilePath.replace('/index.md', '');
+            data.push({
+                "Source" : source,
+                "Destination" : source + '/'
+            });
+        }
+
+        // Fixes paths that end in a trailing slash but shouldn't.
+        // skip any index.md or config.md as they don't need redirect
+        if(!mdFilePath.includes('index.md') && !mdFilePath.includes('config.md')) {
+            const source = mdFilePath.replace('.md', '/');
+            data.push({
+                "Source" : source,
+                "Destination" : source.replace(/\/$/, "")
+            });
+        }
+    });
+
+    let redirectionsData = 
+    {
+        "total" : data.length,
+        "offset": 0,
+        "limit": data.length,
+        "data" : data,
+        ":type": "sheet"
+    };
+
+    let redirectionsFilePath = path.resolve(__dirname + '/src/pages/redirects.json');
+    fs.writeFileSync(redirectionsFilePath, JSON.stringify(redirectionsData));
+
+} catch (err) {
+    console.error(err);
+}

package.json

@@ -32,7 +32,8 @@
     "clean": "gatsby clean",
     "test:links": "remark src/pages --quiet --frail",
     "lint": "docker run --rm -e RUN_LOCAL=true --env-file '.github/super-linter.env' -v \"$PWD\":/tmp/lint github/super-linter:slim-v4.10.1",
-    "buildNavigation": "node buildNavigation.js"
+    "buildNavigation": "node buildNavigation.js",
+    "buildRedirections": "node buildRedirections.js"
   },
   "remarkConfig": {
     "plugins": [