From 05bef9f133e4691f85a5eba5e78d46248c8bad2f Mon Sep 17 00:00:00 2001
From: wvffle <funkwhale@wvffle.net>
Date: Sun, 27 Nov 2022 23:43:54 +0000
Subject: [PATCH] Add polish pluralization rule

---
 front/src/init/locale.ts |  21 ++++---
 front/src/locales.json   | 126 ---------------------------------------
 front/src/locales.ts     | 121 +++++++++++++++++++++++++++++++++++++
 3 files changed, 135 insertions(+), 133 deletions(-)
 delete mode 100644 front/src/locales.json
 create mode 100644 front/src/locales.ts

diff --git a/front/src/init/locale.ts b/front/src/init/locale.ts
index fb0485d72..7bb72d686 100644
--- a/front/src/init/locale.ts
+++ b/front/src/init/locale.ts
@@ -1,10 +1,11 @@
 import type { InitModule } from '~/types'
+import type { SupportedLanguages } from '~/locales'
 
 import { usePreferredLanguages } from '@vueuse/core'
 import { createI18n } from 'vue-i18n'
 import { nextTick } from 'vue'
 
-import locales from '~/locales.json'
+import { locales } from '~/locales'
 import store from '~/store'
 
 import useLogger from '~/composables/useLogger'
@@ -16,10 +17,11 @@ const localeFactory = import.meta.glob('../locales/*.json') as Record<string, ()
 const logger = useLogger()
 
 const defaultLanguage = store.state.ui.currentLanguage ?? 'en'
-export const SUPPORTED_LOCALES = locales.reduce((map: Record<string, string>, locale) => {
-  map[locale.code] = locale.label
-  return map
-}, {})
+
+export const SUPPORTED_LOCALES = Object.fromEntries(
+  Object.entries(locales)
+    .map(([key, value]) => [key, value.label])
+) as Record<SupportedLanguages, string>
 
 export const i18n = createI18n<false>({
   formatFallbackMessages: true,
@@ -27,11 +29,16 @@ export const i18n = createI18n<false>({
   fallbackLocale: 'en_US',
   legacy: false,
   locale: 'en_US',
-  messages: { en_US: en }
+  messages: { en_US: en },
+  pluralizationRules: Object.fromEntries(
+    Object.entries(locales)
+      .map(([key, value]) => [key, value.pluralizationRule])
+      .filter(i => i[1])
+  )
 })
 
 export const setI18nLanguage = async (locale: string) => {
-  if (!Object.keys(SUPPORTED_LOCALES).includes(locale)) {
+  if (!(locale in locales)) {
     throw new Error(`Unsupported locale: ${locale}`)
   }
 
diff --git a/front/src/locales.json b/front/src/locales.json
deleted file mode 100644
index 7f6cd8e3f..000000000
--- a/front/src/locales.json
+++ /dev/null
@@ -1,126 +0,0 @@
-[
-  {
-    "code": "ar",
-    "label": "العربية"
-  },
-  {
-    "code": "ca",
-    "label": "Català"
-  },
-  {
-    "code": "cs",
-    "label": "Čeština"
-  },
-  {
-    "code": "de",
-    "label": "Deutsch"
-  },
-  {
-    "code": "en_GB",
-    "label": "English (UK)"
-  },
-  {
-    "code": "en_US",
-    "label": "English (United-States)"
-  },
-  {
-    "code": "eo",
-    "label": "Esperanto"
-  },
-  {
-    "code": "es",
-    "label": "Español"
-  },
-  {
-    "code": "eu",
-    "label": "Euskara"
-  },
-  {
-    "code": "fr_FR",
-    "label": "Français"
-  },
-  {
-    "code": "gl",
-    "label": "Galego"
-  },
-  {
-    "code": "hu",
-    "label": "Magyar"
-  },
-  {
-    "code": "it",
-    "label": "Italiano"
-  },
-  {
-    "code": "ja_JP",
-    "label": "日本語"
-  },
-  {
-    "code": "kab_DZ",
-    "label": "Taqbaylit"
-  },
-  {
-    "code": "ko_KR",
-    "label": "한국어"
-  },
-  {
-    "code": "nb_NO",
-    "label": "Bokmål"
-  },
-  {
-    "code": "nn_NO",
-    "label": "Nynorsk"
-  },
-  {
-    "code": "nl",
-    "label": "Nederlands"
-  },
-  {
-    "code": "oc",
-    "label": "Occitan"
-  },
-  {
-    "code": "pl",
-    "label": "Polski"
-  },
-  {
-    "code": "pt_BR",
-    "label": "Português (Brasil)"
-  },
-  {
-    "code": "pt_PT",
-    "label": "Português (Portugal)"
-  },
-  {
-    "code": "ru",
-    "label": "Русский"
-  },
-  {
-    "code": "sq",
-    "label": "Shqip"
-  },
-  {
-    "code": "zh_Hans",
-    "label": "中文(简体)"
-  },
-  {
-    "code": "zh_Hant",
-    "label": "中文(繁體)"
-  },
-  {
-    "code": "fa_IR",
-    "label": "فارسی"
-  },
-  {
-    "code": "ml",
-    "label": "മലയാളം"
-  },
-  {
-    "code": "sv",
-    "label": "Svenska"
-  },
-  {
-    "code": "el",
-    "label": "Ελληνικά"
-  }
-]
diff --git a/front/src/locales.ts b/front/src/locales.ts
new file mode 100644
index 000000000..490a2c530
--- /dev/null
+++ b/front/src/locales.ts
@@ -0,0 +1,121 @@
+import type { VueI18nOptions } from 'vue-i18n'
+
+export type SupportedLanguages = 'ar' | 'ca' | 'cs' | 'de' | 'en_GB' | 'en_US' | 'eo' | 'es' | 'eu' | 'fr_FR'
+  | 'gl' | 'hu' | 'it' | 'ja_JP' | 'kab_DZ' | 'ko_KR' | 'nb_NO' | 'nl' | 'oc' | 'pl' | 'pt_BR' | 'pt_PT'
+  | 'ru' | 'sq' | 'zh_Hans' | 'zh_Hant' | 'fa_IR' | 'ml' | 'sv' | 'el' | 'nn_NO'
+
+export interface Locale {
+  label: string
+  pluralizationRule?: Exclude<VueI18nOptions['pluralizationRules'], undefined>[string]
+}
+
+export const locales: Record<SupportedLanguages, Locale> = {
+  ar: {
+    label: 'العربية'
+  },
+  ca: {
+    label: 'Català'
+  },
+  cs: {
+    label: 'Čeština'
+  },
+  de: {
+    label: 'Deutsch'
+  },
+  en_GB: {
+    label: 'English (UK)'
+  },
+  en_US: {
+    label: 'English (United-States)'
+  },
+  eo: {
+    label: 'Esperanto'
+  },
+  es: {
+    label: 'Español'
+  },
+  eu: {
+    label: 'Euskara'
+  },
+  fr_FR: {
+    label: 'Français'
+  },
+  gl: {
+    label: 'Galego'
+  },
+  hu: {
+    label: 'Magyar'
+  },
+  it: {
+    label: 'Italiano'
+  },
+  ja_JP: {
+    label: '日本語'
+  },
+  kab_DZ: {
+    label: 'Taqbaylit'
+  },
+  ko_KR: {
+    label: '한국어'
+  },
+  nb_NO: {
+    label: 'Bokmål'
+  },
+  nn_NO: {
+    label: 'Nynorsk'
+  },
+  nl: {
+    label: 'Nederlands'
+  },
+  oc: {
+    label: 'Occitan'
+  },
+  pl: {
+    label: 'Polski',
+    pluralizationRule: (n, choices) => {
+      // 0 rowerow | 1 rower | 2-4 rowery | 5-21 rowerow
+      // 1 rower | 2-4 rowery | 5-21 rowerow
+
+      const isFew = (n % 10 >= 2 && n % 10 <= 4) && (n % 100 < 10 || n % 100 >= 20)
+
+      if (choices === 3) {
+        if (n === 0) return 2
+        if (n === 1) return 0
+        return isFew ? 1 : 2
+      }
+
+      if (n === 0 || n === 1) return n
+      return isFew ? 2 : 3
+    }
+  },
+  pt_BR: {
+    label: 'Português (Brasil)'
+  },
+  pt_PT: {
+    label: 'Português (Portugal)'
+  },
+  ru: {
+    label: 'Русский'
+  },
+  sq: {
+    label: 'Shqip'
+  },
+  zh_Hans: {
+    label: '中文(简体)'
+  },
+  zh_Hant: {
+    label: '中文(繁體)'
+  },
+  fa_IR: {
+    label: 'فارسی'
+  },
+  ml: {
+    label: 'മലയാളം'
+  },
+  sv: {
+    label: 'Svenska'
+  },
+  el: {
+    label: 'Ελληνικά'
+  }
+}