add delete-unused-files script

Author: mansona

delete-unused-files.js

@@ -0,0 +1,60 @@
+const { readdirSync, rmSync } = require('fs');
+const walkSync = require('walk-sync');
+
+const files = readdirSync('rev-index');
+
+const plurals = {
+  namespace: 'namespaces',
+  class: 'classes',
+  module: 'modules',
+}
+
+function deleteUnusedFilesForRevIndex(file) {
+  const json = require(file);
+  
+  let project;
+  
+  if(json.data.id.match(/^ember-\d/)) {
+    project = 'ember';
+  } else if (json.data.id.match(/^ember-data-\d/)) {
+    project = 'ember-data';
+  } else {
+    console.log('error figuring out project for', file);
+    return;
+  }
+
+  const version = json.data.attributes.version;
+  const knownFiles = [];
+  
+  ['module', 'class', 'namespace'].forEach(entity => {
+    for (const key in json.meta[entity]) {
+      
+      
+      knownFiles.push(`${plurals[entity]}/${json.meta[entity][key]}.json`);
+    }
+  })
+
+
+  const paths = walkSync(`json-docs/${project}/${version}`, { directories: false});
+
+  paths.forEach(file => {
+    if (file.startsWith('project-versions/')) {
+      // ignore project-versions folder
+      return;
+    }
+
+    if (file.startsWith('missings/')) {
+      // I have no idea what a "missings" is but tests fail if we don't ignore them
+      return;
+    }
+
+    if(!knownFiles.includes(file)) {
+      rmSync(`json-docs/${project}/${version}/${file}`)
+    }
+  })
+
+}
+
+files.forEach(file => {
+  deleteUnusedFilesForRevIndex(`./rev-index/${file}`)
+});