Add script to calculate percentage of translation (#1826)

* add script to calculate percentage of translation

* test translation change

* change translation

* test

* change translation

* Calculate percentages of each translation file

* test

* Calculate percentages of each translation file

* change translation

* test

* test

* Calculate percentages of each translation file

* test

* Calculate percentages of each translation file

* fix workflow

* test

* test again

* Calculate percentages of each translation file

* Calculate percentages of each translation file

* test

* refactor

* change build logic

* fix types, move English first

* docs added

* test translation file

* test

* test

* test

* test

* test

* test

* test

* test

* test

* test

* test

* test

* Calculate percentages of each translation file

* let this be the final test please

* Calculate percentages of each translation file

* test

* test

* Test

* Calculate percentages of each translation file

* test

* Calculate percentages of each translation file

* test

* Calculate percentages of each translation file

* test

* Auto commit: Calculate translation coverage

* test

* test

* test

* test

* Auto commit: Calculate translation coverage

* test

* only on master

* test

* test

* Auto commit: Calculate translation coverage

* switch to master branch

Co-authored-by: i18n automation <runner@fv-az76.2iswp1o5zimezclxzdlwqia2gf.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az129.idlktykl4ure3gqe2lnji05orb.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az76.pjgcdo5npjpenpqz2nk0ztqvxd.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az33.senarqq4ucbulg04aytwntvgah.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az51.icvemaqob4xunfekbtdiz2tu2c.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az78.gikxu4m3dpiulftj3bftpuu3ee.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az121.cqdewbghluceforu5pkvpnveec.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az139.jsbds1i2htye3fh1bzwbe4ugmf.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az50.0bg2cysi0dkefjvuua0a0kbd1h.cx.internal.cloudapp.net>
Co-authored-by: i18n automation <runner@fv-az51.nhi3in4tbx4ehjtltcwuwbwsua.cx.internal.cloudapp.net>

src/i18n.ts

@@ -1,9 +1,18 @@
 import LanguageDetector from "i18next-browser-languagedetector";
 
 import fallbackLanguageData from "./locales/en.json";
+import percentages from "./locales/percentages.json";
 
-export const languages = [
-  { lng: "en", label: "English", data: "en.json" },
+const COMPLETION_THRESHOLD_TO_EXCEED = 85;
+
+interface Language {
+  lng: string;
+  label: string;
+  data: string;
+  rtl?: boolean;
+}
+
+const allLanguages: Language[] = [
   { lng: "bg-BG", label: "Български", data: "bg-BG.json" },
   { lng: "de-DE", label: "Deutsch", data: "de-DE.json" },
   { lng: "es-ES", label: "Español", data: "es-ES.json" },
@@ -30,6 +39,18 @@ export const languages = [
   { lng: "he-IL", label: "עברית", data: "he-IL.json", rtl: true },
 ];
 
+export const languages: Language[] = [
+  { lng: "en", label: "English", data: "en.json" },
+]
+  .concat(
+    allLanguages.sort((left, right) => (left.label > right.label ? 1 : -1)),
+  )
+  .filter(
+    (lang) =>
+      (percentages as Record<string, number>)[lang.lng] >
+      COMPLETION_THRESHOLD_TO_EXCEED,
+  );
+
 let currentLanguage = languages[0];
 let currentLanguageData = {};
 const fallbackLanguage = languages[0];

src/locales/README.md

@@ -1,5 +1,14 @@
+## How to contribute
+
 Please do not contribute changes directly to these files, as we manage them with Crowdin. Instead:
 
 - to request a new translation, [open an issue](https://github.com/excalidraw/excalidraw/issues/new/choose).
 - to update existing translations, [edit them on Crowdin](https://crowdin.com/translate/excalidraw/10)
   and we should have them included in the app soon!
+
+## Completion of translation
+
+[percentages.json](./percentages.json) holds a percentage of completion for each language. We generate these
+automatically [on build time](./../../.github/workflows/locales-coverage.yml) when a new translation PR appears.
+
+We only make a language available on the app if it exceeds a certain threshold of completion.

src/locales/percentages.json

@@ -0,0 +1 @@
+{"ar-SA":57,"bg-BG":81,"ca-ES":92,"de-DE":99,"el-GR":98,"en":100,"es-ES":97,"fa-IR":99,"fi-FI":100,"fr-FR":99,"he-IL":94,"hi-IN":99,"hu-HU":58,"id-ID":59,"it-IT":97,"ja-JP":77,"ko-KR":72,"nb-NO":99,"nl-NL":85,"pl-PL":99,"pt-PT":100,"ru-RU":81,"sq-AL":42,"tr-TR":98,"uk-UA":99,"zh-CN":99,"zh-TW":99}