feat: Add check-locales script

packages/cozy-scripts/scripts/check-locales.js

@@ -0,0 +1,77 @@
+const fs = require('fs')
+const { ArgumentParser } = require('argparse')
+
+const setDiff = (set1, set2) => {
+  const res = []
+  for (const v of set1) {
+    if (!set2.has(v)) {
+      res.push(v)
+    }
+  }
+  return res
+}
+
+const diff = (obj1, obj2) => {
+  const paths1 = new Set(paths(obj1))
+  const paths2 = new Set(paths(obj2))
+  const removed = Array.from(setDiff(paths1, paths2))
+  const added = Array.from(setDiff(paths2, paths1))
+  return [
+    ...added.map(x => ({ type: 'add', value: x })),
+    ...removed.map(x => ({ type: 'remove', value: x }))
+  ]
+}
+
+/** Outputs all the dotted paths of an object */
+const paths = (obj, current = '') => {
+  let res = []
+  for (let [k, v] of Object.entries(obj)) {
+    if (typeof v === 'object') {
+      for (const leaf of paths(v, current ? `${current}.${k}` : k)) {
+        res.push(`${leaf}`)
+      }
+    } else {
+      res.push(`${current}.${k}`)
+    }
+  }
+  return res
+}
+
+const main = () => {
+  const parser = new ArgumentParser({
+    description: `This scripts checks for differing keys between two locale files
+It is used to check if a given locale file (file2) is up to date
+with respect to another locale file (file1).
+Usage: check-locales.js en.json fr.json`
+  })
+  parser.addArgument('file1', {
+    nargs: '?',
+    defaultValue: 'src/locales/en.json'
+  })
+  parser.addArgument('file2', {
+    nargs: '?',
+    defaultValue: 'src/locales/fr.json'
+  })
+  const args = parser.parseArgs()
+
+  const { file1, file2 } = args
+  const diffs = diff(
+    JSON.parse(fs.readFileSync(file1)),
+    JSON.parse(fs.readFileSync(file2))
+  )
+
+  if (diffs.length > 0) {
+    for (let d of diffs) {
+      console.log(d.type === 'add' ? '+' : '-', d.value)
+    }
+    console.warn(`Locales ${file1} and ${file2} mismatch, see diff above`)
+    process.exit(1)
+  } else {
+    console.log('Locales have the same keys, everything OK')
+    process.exit(0)
+  }
+}
+
+if (require.main === module) {
+  main()
+}