feat: translations (#941)

src/API/Akkoma/Translation.vala

@@ -0,0 +1,8 @@
+public class Tuba.API.AkkomaTranslation : Entity {
+	public string text { get; set; default = ""; }
+	public string detected_language { get; set; default = ""; }
+
+	public static AkkomaTranslation from (Json.Node node) throws Error {
+		return Entity.from_json (typeof (API.AkkomaTranslation), node) as API.AkkomaTranslation;
+	}
+}

src/API/Akkoma/meson.build

@@ -1,3 +1,3 @@
 sources += files(
-    'Source.vala',
+    'Translation.vala',
 )

src/API/Attachment.vala

@@ -10,6 +10,7 @@ public class Tuba.API.Attachment : Entity, Widgetizable {
 		set { this.t_preview_url = value; }
 		get { return (this.t_preview_url == null || this.t_preview_url == "") ? url : t_preview_url; }
 	}
+	public string? tuba_translated_alt_text { get; set; default = null; }
 
 	public File? source_file { get; set; }
 

src/API/Instance.vala

@@ -16,6 +16,8 @@ public class Tuba.API.Instance : Entity {
 	public API.Pleroma.Instance? pleroma { get; set; default = null; }
 	public Gee.ArrayList<Rule>? rules { get; set; }
 
+	public bool tuba_can_translate { get; set; default=false; }
+
 	public override Type deserialize_array_type (string prop) {
 		switch (prop) {
 			case "languages":

src/API/InstanceV2.vala

@@ -0,0 +1,14 @@
+public class Tuba.API.InstanceV2 : Entity {
+	public class Configuration : Entity {
+		public class Translation : Entity {
+			public bool enabled { get; set; default = false; }
+		}
+		public Translation translation { get; set; default = null; }
+	}
+
+	public Configuration configuration { get; set; default = null; }
+
+	public static InstanceV2 from (Json.Node node) throws Error {
+		return Entity.from_json (typeof (API.InstanceV2), node) as API.InstanceV2;
+	}
+}

src/API/PollOption.vala

@@ -1,4 +1,5 @@
 public class Tuba.API.PollOption : Entity {
     public string? title { get; set; }
     public int64 votes_count { get; set; default=0; }
+    public string? tuba_translated_title { get; set; default = null; }
 }

src/API/Status.vala

@@ -91,6 +91,7 @@ public class Tuba.API.Status : Entity, Widgetizable {
 
 	public Tuba.Views.Thread.ThreadRole tuba_thread_role { get; set; default = Tuba.Views.Thread.ThreadRole.NONE; }
     public bool tuba_spoiler_revealed { get; set; default = settings.show_spoilers; }
+    public bool tuba_translatable { get; set; default = false; }
 
     //  public string clean_content {
     //      get {
@@ -108,6 +109,7 @@ public class Tuba.API.Status : Entity, Widgetizable {
             return _language;
         }
         set {
+            if (value != null) tuba_translatable = true;
             _language = value ?? settings.default_language;
         }
     }

src/API/Translation.vala

@@ -0,0 +1,43 @@
+public class Tuba.API.Translation : Entity {
+	public class Poll : Entity {
+		public class Option : Entity {
+			public string title { get; set; default = ""; }
+		}
+		public string id { get; set; default = ""; }
+		public Gee.ArrayList<Option>? options { get; set; default = null; }
+
+		public override Type deserialize_array_type (string prop) {
+			switch (prop) {
+				case "options":
+					return typeof (Option);
+			}
+
+			return base.deserialize_array_type (prop);
+		}
+	}
+
+	public class Attachment : Entity {
+		public string id { get; set; default = ""; }
+		public string description { get; set; default = ""; }
+	}
+
+	public string content { get; set; default = ""; }
+	public string spoiler_text { get; set; default = ""; }
+	public Poll? poll { get; set; default = null; }
+	public Gee.ArrayList<Attachment>? media_attachments { get; set; default = null; }
+	public string detected_source_language { get; set; default = ""; }
+	public string provider { get; set; default = ""; }
+
+	public static Translation from (Json.Node node) throws Error {
+		return Entity.from_json (typeof (API.Translation), node) as API.Translation;
+	}
+
+	public override Type deserialize_array_type (string prop) {
+		switch (prop) {
+			case "media-attachments":
+				return typeof (Attachment);
+		}
+
+		return base.deserialize_array_type (prop);
+	}
+}

src/API/meson.build

@@ -11,6 +11,7 @@ sources += files(
     'Entity.vala',
     'Funkwhale.vala',
     'Instance.vala',
+    'InstanceV2.vala',
     'List.vala',
     'Mention.vala',
     'Notification.vala',
@@ -23,10 +24,11 @@ sources += files(
     'Suggestion.vala',
     'Tag.vala',
     'TagHistory.vala',
+    'Translation.vala',
 )
 
 subdir('Account')
-# subdir('Akkoma')
+subdir('Akkoma')
 subdir('BookWyrm')
 subdir('Filters')
 subdir('Funkwhale')

src/Application.vala

@@ -27,6 +27,8 @@ namespace Tuba {
 	public static bool is_flatpak = false;
 	public static string cache_path;
 
+	public static string default_locale;
+
 	public class Application : Adw.Application {
 
 		public Dialogs.MainWindow? main_window { get; set; }
@@ -248,6 +250,17 @@ namespace Tuba {
 				Adw.init ();
 				GtkSource.init ();
 
+				var t_default_locale = Gtk.get_default_language ().to_string ();
+				if (t_default_locale == "c") {
+					default_locale = "en-US";
+				} else {
+					if (t_default_locale.index_of_char ('-') != -1) {
+						var tdl_parts = t_default_locale.split ("-", 2);
+						t_default_locale = @"$(tdl_parts[0].down ())-$(tdl_parts[1].up ())";
+					}
+					default_locale = t_default_locale;
+				}
+
 				settings = new Settings ();
 				streams = new Streams ();
 				network = new Network ();

src/Services/Accounts/InstanceAccount.vala

@@ -364,6 +364,27 @@ public class Tuba.InstanceAccount : API.Account, Streamable {
 						supported_mime_types.append (new StatusContentType (content_type));
 					}
 				}
+
+				if (instance_info.pleroma == null) {
+					gather_v2_instance_info ();
+				} else if (instance_info.pleroma.metadata != null && instance_info.pleroma.metadata.features != null) {
+					instance_info.tuba_can_translate = "akkoma:machine_translation" in instance_info.pleroma.metadata.features;
+				}
+			})
+			.exec ();
+	}
+
+	private void gather_v2_instance_info () {
+		new Request.GET ("/api/v2/instance")
+			.with_account (this)
+			.then ((in_stream) => {
+				var parser = Network.get_parser_from_inputstream (in_stream);
+				var node = network.parse_node (parser);
+				var instance_v2 = API.InstanceV2.from (node);
+
+				if (instance_v2 != null && instance_v2.configuration != null && instance_v2.configuration.translation != null) {
+					instance_info.tuba_can_translate = instance_v2.configuration.translation.enabled;
+				}
 			})
 			.exec ();
 	}

src/Widgets/Attachment/Image.vala

@@ -46,7 +46,14 @@ public class Tuba.Widgets.Attachment.Image : Widgets.Attachment.Item {
 	ulong pic_paintable_id = 0;
 	protected override void on_rebind () {
 		base.on_rebind ();
-		pic.alternative_text = entity == null ? null : entity.description;
+
+		if (entity == null) {
+			pic.alternative_text = null;
+		} else if (entity.tuba_translated_alt_text != null) {
+			pic.alternative_text = entity.tuba_translated_alt_text;
+		} else {
+			pic.alternative_text = entity.description;
+		}
 
 		if (pic_paintable_id != 0) {
 			pic.disconnect (pic_paintable_id);

src/Widgets/Attachment/Item.vala

@@ -136,7 +136,7 @@ public class Tuba.Widgets.Attachment.Item : Adw.Bin {
 
 	private void on_alt_text_btn_clicked () {
 		if (entity != null && entity.description != null)
-			create_alt_text_dialog (entity.description, true);
+			create_alt_text_dialog (entity.tuba_translated_alt_text == null ? entity.description : entity.tuba_translated_alt_text, true);
 	}
 
 	protected Adw.Dialog create_alt_text_dialog (string alt_text, bool show = false) {