From 0445f34250a15b04dd18dc94f3fdff4948a6d626 Mon Sep 17 00:00:00 2001
From: shilangyu <xmarcinmarcin@gmail.com>
Date: Sun, 28 Feb 2021 16:40:58 +0100
Subject: [PATCH] Create lemmy-translations migration script

---
 scripts/common.dart             |  20 ++++++
 scripts/migrate-lemmy-l10n.dart | 120 ++++++++++++++++++++++++++++++++
 scripts/release.dart            |  16 +----
 3 files changed, 143 insertions(+), 13 deletions(-)
 create mode 100644 scripts/common.dart
 create mode 100644 scripts/migrate-lemmy-l10n.dart

diff --git a/scripts/common.dart b/scripts/common.dart
new file mode 100644
index 0000000..5274d17
--- /dev/null
+++ b/scripts/common.dart
@@ -0,0 +1,20 @@
+import 'dart:io';
+
+void confirm(String message) {
+  stdout.write('$message [y/n] ');
+
+  switch (stdin.readLineSync()) {
+    case 'y':
+    case 'yes':
+      break;
+    default:
+      print('Exiting');
+      exit(1);
+  }
+}
+
+void printError(String message, {bool shouldExit = false}) {
+  stderr.writeln('\x1B[31m$message\x1B[0m');
+
+  if (shouldExit) exit(1);
+}
diff --git a/scripts/migrate-lemmy-l10n.dart b/scripts/migrate-lemmy-l10n.dart
new file mode 100644
index 0000000..7606d3a
--- /dev/null
+++ b/scripts/migrate-lemmy-l10n.dart
@@ -0,0 +1,120 @@
+/// migrates chosen strings from lemmy-translations into flutter's i18n solution
+import 'dart:convert';
+import 'dart:io';
+
+import 'common.dart';
+
+/// Map<key, renamedKey>, if `renamedKey` is null then no rename is performed
+const toExtract = {
+  'settings': null,
+};
+
+const repoName = 'lemmy-translations';
+const baseLanguage = 'en';
+const flutterIntlPrefix = 'intl_';
+
+main(List<String> args) async {
+  final force = args.contains('-f') || args.contains('--force');
+
+  final lemmyTranslations = await loadLemmyStrings();
+  final lemmurTranslations = await loadLemmurStrings();
+  portStrings(lemmyTranslations, lemmurTranslations, force: force);
+
+  await save(lemmurTranslations);
+
+  print("Don't forget to format the arb files!");
+}
+
+/// returns a cleanup function
+Future<Future<void> Function()> cloneLemmyTranslations() async {
+  await Process.run('git', ['clone', 'https://github.com/LemmyNet/$repoName']);
+
+  return () => Directory(repoName).delete(recursive: true);
+}
+
+/// Map<languageTag, Map<stringKey, stringValue>>
+Future<Map<String, Map<String, String>>> loadLemmyStrings() async {
+  final translationsDir = Directory('$repoName/translations');
+  final translations = <String, Map<String, String>>{};
+
+  await for (final file in translationsDir.list()) {
+    final transFile = File.fromUri(file.uri);
+    final trans = Map<String, String>.from(
+      jsonDecode(await transFile.readAsString()) as Map<String, dynamic>,
+    );
+
+    final localeName = file.uri.pathSegments.last.split('.json').first;
+    translations[localeName] = trans;
+  }
+
+  return translations;
+}
+
+/// Map<languageTag, Map<stringKey, stringValue>> + some metadata
+Future<Map<String, Map<String, dynamic>>> loadLemmurStrings() async {
+  final translationsDir = Directory('lib/l10n');
+  final translations = <String, Map<String, dynamic>>{};
+
+  await for (final file in translationsDir.list()) {
+    if (!file.path.endsWith('.arb')) continue;
+
+    final transFile = File.fromUri(file.uri);
+    final trans =
+        jsonDecode(await transFile.readAsString()) as Map<String, dynamic>;
+
+    final localeName = file.uri.pathSegments.last
+        .split('.arb')
+        .first
+        .split(flutterIntlPrefix)
+        .last;
+    translations[localeName] = trans;
+  }
+
+  return translations;
+}
+
+/// will port them into `lemmurTranslations`
+void portStrings(
+  Map<String, Map<String, String>> lemmyTranslations,
+  Map<String, Map<String, dynamic>> lemmurTranslations, {
+  bool force = false,
+}) {
+  // port all languages
+  for (final language in lemmyTranslations.keys) {
+    if (!lemmurTranslations.containsKey(language)) {
+      lemmurTranslations[language] = {};
+      lemmurTranslations[language]['@@locale'] = language;
+    }
+  }
+
+  for (final extract in toExtract.entries) {
+    final key = extract.key;
+    final renamedKey = extract.value ?? key;
+
+    if (!lemmyTranslations[baseLanguage].containsKey(key)) {
+      printError(
+        '"$key" does not exist in $repoName',
+        shouldExit: true,
+      );
+    }
+
+    if (lemmurTranslations[baseLanguage].containsKey(key) && !force) {
+      confirm('"$key" already exists in lemmur, overwrite?');
+    }
+
+    for (final trans in lemmyTranslations.entries) {
+      final language = trans.key;
+      final strings = trans.value;
+
+      lemmurTranslations[language][renamedKey] = strings[key];
+    }
+    lemmurTranslations[baseLanguage]['@$renamedKey'] = {};
+  }
+}
+
+Future<void> save(Map<String, Map<String, dynamic>> lemmurTranslations) async {
+  for (final language in lemmurTranslations.keys) {
+    await File('lib/l10n/$flutterIntlPrefix$language.arb')
+        .writeAsString(jsonEncode(lemmurTranslations[language]));
+  }
+}
diff --git a/scripts/release.dart b/scripts/release.dart
index a74da04..65ac4d4 100755
--- a/scripts/release.dart
+++ b/scripts/release.dart
@@ -1,5 +1,8 @@
+/// Used to create a new lemmur release. Bumps semver, build number, updates changelog, fastlane, pubspec, and finishes by adding a git tag
 import 'dart:io';
 
+import 'common.dart';
+
 Future<void> main(List<String> args) async {
   await assertNoStagedGit();
 
@@ -126,16 +129,3 @@ Future<void> runGitCommands(Version version) async {
   await Process.run('git', ['tag', 'v${version.toStringNoCode()}']);
   print('done');
 }
-
-void confirm(String message) {
-  stdout.write('$message [y/n] ');
-
-  switch (stdin.readLineSync()) {
-    case 'y':
-    case 'yes':
-      break;
-    default:
-      print('Exiting');
-      exit(1);
-  }
-}