Add support for plurlization to locales

locales/ar.json

@@ -307,4 +307,4 @@
     "Videos": "الفيديوهات",
     "Playlists": "قوائم التشغيل",
     "Current version: ": "الإصدار الحالى"
-}
+}

locales/en-US.json

@@ -1,6 +1,12 @@
 {
-    "`x` subscribers": "`x` subscribers",
-    "`x` videos": "`x` videos",
+    "`x` subscribers": {
+        "(\\D|^)1(\\D|$)": "`x` subscriber",
+        "": "`x` subscribers"
+    },
+    "`x` videos": {
+        "(\\D|^)1(\\D|$)": "`x` video",
+        "": "`x` videos"
+    },
     "LIVE": "LIVE",
     "Shared `x` ago": "Shared `x` ago",
     "Unsubscribe": "Unsubscribe",
@@ -102,13 +108,22 @@
     "Subscription manager": "Subscription manager",
     "Token manager": "Token manager",
     "Token": "Token",
-    "`x` subscriptions": "`x` subscriptions",
-    "`x` tokens": "`x` tokens",
+    "`x` subscriptions": {
+        "(\\D|^)1(\\D|$)": "`x` subscription",
+        "": "`x` subscriptions"
+    },
+    "`x` tokens": {
+        "(\\D|^)1(\\D|$)": "`x` token",
+        "": "`x` tokens"
+    },
     "Import/export": "Import/export",
     "unsubscribe": "unsubscribe",
     "revoke": "revoke",
     "Subscriptions": "Subscriptions",
-    "`x` unseen notifications": "`x` unseen notifications",
+    "`x` unseen notifications": {
+        "(\\D|^)1(\\D|$)": "`x` unseen notification",
+        "": "`x` unseen notifications"
+    },
     "search": "search",
     "Log out": "Log out",
     "Released under the AGPLv3 by Omar Roth.": "Released under the AGPLv3 by Omar Roth.",
@@ -126,7 +141,10 @@
     "Whitelisted regions: ": "Whitelisted regions: ",
     "Blacklisted regions: ": "Blacklisted regions: ",
     "Shared `x`": "Shared `x`",
-    "`x` views": "`x` views",
+    "`x` views": {
+        "(\\D|^)1(\\D|$)": "`x` views",
+        "": "`x` views"
+    },
     "Premieres in `x`": "Premieres in `x`",
     "Hi! Looks like you have JavaScript turned off. Click here to view comments, keep in mind they may take a bit longer to load.": "Hi! Looks like you have JavaScript turned off. Click here to view comments, keep in mind they may take a bit longer to load.",
     "View YouTube comments": "View YouTube comments",
@@ -156,10 +174,16 @@
     "This channel does not exist.": "This channel does not exist.",
     "Could not get channel info.": "Could not get channel info.",
     "Could not fetch comments": "Could not fetch comments",
-    "View `x` replies": "View `x` replies",
+    "View `x` replies": {
+        "(\\D|^)1(\\D|$)": "View `x` reply",
+        "": "View `x` replies"
+    },
     "`x` ago": "`x` ago",
     "Load more": "Load more",
-    "`x` points": "`x` points",
+    "`x` points": {
+        "(\\D|^)1(\\D|$)": "`x` point",
+        "": "`x` points"
+    },
     "Could not create mix.": "Could not create mix.",
     "Empty playlist": "Empty playlist",
     "Not a playlist.": "Not a playlist.",
@@ -277,13 +301,34 @@
     "Yiddish": "Yiddish",
     "Yoruba": "Yoruba",
     "Zulu": "Zulu",
-    "`x` years": "`x` years",
-    "`x` months": "`x` months",
-    "`x` weeks": "`x` weeks",
-    "`x` days": "`x` days",
-    "`x` hours": "`x` hours",
-    "`x` minutes": "`x` minutes",
-    "`x` seconds": "`x` seconds",
+    "`x` years": {
+        "(\\D|^)1(\\D|$)": "`x` year",
+        "": "`x` years"
+    },
+    "`x` months": {
+        "(\\D|^)1(\\D|$)": "`x` month",
+        "": "`x` months"
+    },
+    "`x` weeks": {
+        "(\\D|^)1(\\D|$)": "`x` week",
+        "": "`x` weeks"
+    },
+    "`x` days": {
+        "(\\D|^)1(\\D|$)": "`x` day",
+        "": "`x` days"
+    },
+    "`x` hours": {
+        "(\\D|^)1(\\D|$)": "`x` hour",
+        "": "`x` hours"
+    },
+    "`x` minutes": {
+        "(\\D|^)1(\\D|$)": "`x` minute",
+        "": "`x` minutes"
+    },
+    "`x` seconds": {
+        "(\\D|^)1(\\D|$)": "`x` second",
+        "": "`x` seconds"
+    },
     "Fallback comments: ": "Fallback comments: ",
     "Popular": "Popular",
     "Top": "Top",

src/invidious/helpers/i18n.cr

@@ -7,8 +7,24 @@ def translate(locale : Hash(String, JSON::Any) | Nil, translation : String, text
   #   puts "Could not find translation for #{translation.dump}"
   # end
 
-  if locale && locale[translation]? && !locale[translation].as_s.empty?
-    translation = locale[translation].as_s
+  if locale && locale[translation]?
+    case locale[translation]
+    when .as_h?
+      match_length = 0
+
+      locale[translation].as_h.each do |key, value|
+        if md = text.try &.match(/#{key}/)
+          if md[0].size >= match_length
+            translation = value.as_s
+            match_length = md[0].size
+          end
+        end
+      end
+    when .as_s?
+      if !locale[translation].as_s.empty?
+        translation = locale[translation].as_s
+      end
+    end
   end
 
   if text