From afd10884d1ab4db4b53f73336ae4b51a45026fd2 Mon Sep 17 00:00:00 2001
From: Overtorment <overtorment@gmail.com>
Date: Fri, 30 Sep 2022 20:15:10 +0100
Subject: [PATCH] REF: script to detect unused locale keys

---
 package.json               |  2 +-
 scripts/find-unused-loc.js | 72 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 scripts/find-unused-loc.js

diff --git a/package.json b/package.json
index 6be3d88d2..567d5eba5 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
     "e2e:release-build": "detox build -c android.release",
     "e2e:release-test": "detox test -c android.release --record-videos all --record-logs all --take-screenshots all --headless -d 200000",
     "tslint": "tsc",
-    "lint": "eslint --ext .js,.ts,.tsx '*.@(js|ts|tsx)' screen 'blue_modules/*.@(js|ts|tsx)' class models loc tests components && npm run tslint",
+    "lint": "eslint --ext .js,.ts,.tsx '*.@(js|ts|tsx)' screen 'blue_modules/*.@(js|ts|tsx)' class models loc tests components && npm run tslint && node scripts/find-unused-loc.js",
     "lint:fix": "npm run lint -- --fix",
     "lint:quickfix": "git status --porcelain | grep -v '\\.json' | grep -E '\\.js|\\.ts' --color=never |  awk '{print $2}' | xargs eslint --fix; exit 0",
     "unit": "jest -b -i tests/unit/*",
diff --git a/scripts/find-unused-loc.js b/scripts/find-unused-loc.js
new file mode 100644
index 000000000..76bb0cc14
--- /dev/null
+++ b/scripts/find-unused-loc.js
@@ -0,0 +1,72 @@
+const fs = require('fs');
+const path = require("path")
+
+const mainLocFile = './loc/en.json';
+const dirsToInterate = ['components', 'screen', 'blue_modules'];
+
+let allLocKeysHashmap = {}; // loc key -> used or not
+
+const getAllFiles = function(dirPath, arrayOfFiles) {
+  const files = fs.readdirSync(dirPath)
+
+  arrayOfFiles = arrayOfFiles || []
+
+  files.forEach(function(file) {
+    if (fs.statSync(dirPath + "/" + file).isDirectory()) {
+      arrayOfFiles = getAllFiles(dirPath + "/" + file, arrayOfFiles)
+    } else {
+      arrayOfFiles.push(path.resolve(path.join(dirPath, "/", file)))
+    }
+  })
+
+  return arrayOfFiles
+}
+
+const allDirFiles = [];
+for (const dir of dirsToInterate) {
+  allDirFiles.push(...getAllFiles(dir));
+}
+
+// got all source files
+
+function objKeysRecursive(obj, depth = []) {
+  for (const k in obj) {
+    if (typeof obj[k] == "object" && obj[k] !== null) {
+      objKeysRecursive(obj[k], depth.concat(k));
+    } else {
+      allLocKeysHashmap['loc.' + depth.join('.') + '.' + k] = false; // false means unused
+    }
+  }
+}
+objKeysRecursive(JSON.parse(fs.readFileSync(mainLocFile).toString('utf8')));
+
+// got all loc keys.
+// finally, iterating all source files, readign them and looking for unused loc keys
+
+
+// iterating all files
+for (const filepath of allDirFiles) {
+  const contents = fs.readFileSync(filepath);
+
+  // opened a file. iterating all loc keys
+  for (const key of Object.keys(allLocKeysHashmap)) {
+    if (contents.includes(key)) {
+      // opened file uses this loc key. marking it as used
+      allLocKeysHashmap[key] = true;
+    }
+  }
+}
+
+
+// done! now printing results:
+
+
+let exitCode = 0;
+for (const key of Object.keys(allLocKeysHashmap)) {
+  if (allLocKeysHashmap[key] === false) {
+    console.log('Unused loc key: ' + key);
+    exitCode = 1;
+  }
+}
+
+process.exit(exitCode);