WIP proof of concept to add localization using fluent-rs

Cargo.lock

@@ -313,6 +313,17 @@ dependencies = [
  "syn 2.0.89",
 ]
 
+[[package]]
+name = "async-trait"
+version = "0.1.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "721cae7de5c34fbb2acd27e21e6d2cf7b886dce0c27388d46c4e6c47ea4318dd"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.89",
+]
+
 [[package]]
 name = "atomic-waker"
 version = "1.1.2"
@@ -757,6 +768,12 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "chunky-vec"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb7bdea464ae038f09197b82430b921c53619fc8d2bcaf7b151013b3ca008017"
+
 [[package]]
 name = "cipher"
 version = "0.4.4"
@@ -1038,6 +1055,17 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd0c93bb4b0c6d9b77f4435b0ae98c24d17f1c45b2ff844c6151a07256ca923b"
 
+[[package]]
+name = "displaydoc"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.89",
+]
+
 [[package]]
 name = "dlib"
 version = "0.5.2"
@@ -1250,6 +1278,15 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 
+[[package]]
+name = "elsa"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d98e71ae4df57d214182a2e5cb90230c0192c6ddfcaa05c36453d46a54713e10"
+dependencies = [
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "emath"
 version = "0.27.2"
@@ -1458,6 +1495,81 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "98de4bbd547a563b716d8dfa9aad1cb19bfab00f4fa09a6a4ed21dbcf44ce9c4"
 
+[[package]]
+name = "fluent"
+version = "0.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb74634707bebd0ce645a981148e8fb8c7bccd4c33c652aeffd28bf2f96d555a"
+dependencies = [
+ "fluent-bundle",
+ "unic-langid",
+]
+
+[[package]]
+name = "fluent-bundle"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fe0a21ee80050c678013f82edf4b705fe2f26f1f9877593d13198612503f493"
+dependencies = [
+ "fluent-langneg",
+ "fluent-syntax",
+ "intl-memoizer",
+ "intl_pluralrules",
+ "rustc-hash 1.1.0",
+ "self_cell 0.10.3",
+ "smallvec",
+ "unic-langid",
+]
+
+[[package]]
+name = "fluent-fallback"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1010c29cde3a7eeb231c59d95411dcea1c1d91ad00dd733b076dbd885815024a"
+dependencies = [
+ "async-trait",
+ "chunky-vec",
+ "fluent-bundle",
+ "futures",
+ "once_cell",
+ "pin-cell",
+ "rustc-hash 1.1.0",
+ "unic-langid",
+]
+
+[[package]]
+name = "fluent-langneg"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c4ad0989667548f06ccd0e306ed56b61bd4d35458d54df5ec7587c0e8ed5e94"
+dependencies = [
+ "unic-langid",
+]
+
+[[package]]
+name = "fluent-resmgr"
+version = "0.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2a2360469fd304ea6560a6dfb8f843328d3a6498f1c867f187e57993609af7e"
+dependencies = [
+ "elsa",
+ "fluent-bundle",
+ "fluent-fallback",
+ "futures",
+ "rustc-hash 1.1.0",
+ "thiserror 1.0.63",
+ "unic-langid",
+]
+
+[[package]]
+name = "fluent-syntax"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a530c4694a6a8d528794ee9bbd8ba0122e779629ac908d15ad5a7ae7763a33d"
+dependencies = [
+ "thiserror 1.0.63",
+]
+
 [[package]]
 name = "flume"
 version = "0.11.0"
@@ -2063,6 +2175,25 @@ dependencies = [
  "syn 2.0.89",
 ]
 
+[[package]]
+name = "intl-memoizer"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe22e020fce238ae18a6d5d8c502ee76a52a6e880d99477657e6acc30ec57bda"
+dependencies = [
+ "type-map",
+ "unic-langid",
+]
+
+[[package]]
+name = "intl_pluralrules"
+version = "7.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "078ea7b7c29a2b4df841a7f6ac8775ff6074020c6776d48491ce2268e068f972"
+dependencies = [
+ "unic-langid",
+]
+
 [[package]]
 name = "ipnet"
 version = "2.10.0"
@@ -2617,6 +2748,9 @@ dependencies = [
  "ehttp 0.2.0",
  "enostr",
  "env_logger 0.10.2",
+ "fluent",
+ "fluent-fallback",
+ "fluent-resmgr",
  "hex",
  "image",
  "indexmap",
@@ -2639,6 +2773,7 @@ dependencies = [
  "tracing-appender",
  "tracing-subscriber",
  "tracing-wasm",
+ "unic-langid",
  "url",
  "urlencoding",
  "uuid",
@@ -3035,6 +3170,12 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5be167a7af36ee22fe3115051bc51f6e6c7054c9348e28deb4f49bd6f705a315"
 
+[[package]]
+name = "pin-cell"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1f4c4ebd3c5f82080164b7d9cc8e505cd9536fda8c750b779daceb4b7180a7b"
+
 [[package]]
 name = "pin-project"
 version = "1.1.5"
@@ -3871,6 +4012,21 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "self_cell"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e14e4d63b804dc0c7ec4a1e52bcb63f02c7ac94476755aa579edac21e01f915d"
+dependencies = [
+ "self_cell 1.0.4",
+]
+
+[[package]]
+name = "self_cell"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d369a96f978623eb3dc28807c4852d6cc617fed53da5d3c400feff1ef34a714a"
+
 [[package]]
 name = "semver"
 version = "1.0.23"
@@ -4126,6 +4282,12 @@ dependencies = [
  "bitflags 2.6.0",
 ]
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -4366,6 +4528,15 @@ dependencies = [
  "strict-num",
 ]
 
+[[package]]
+name = "tinystr"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9117f5d4db391c1cf6927e7bea3db74b9a1c1add8f7eda9ffd5364f40f57b82f"
+dependencies = [
+ "displaydoc",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.8.0"
@@ -4662,6 +4833,24 @@ version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 
+[[package]]
+name = "unic-langid"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23dd9d1e72a73b25e07123a80776aae3e7b0ec461ef94f9151eed6ec88005a44"
+dependencies = [
+ "unic-langid-impl",
+]
+
+[[package]]
+name = "unic-langid-impl"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a5422c1f65949306c99240b81de9f3f15929f5a8bfe05bb44b034cc8bf593e5"
+dependencies = [
+ "tinystr",
+]
+
 [[package]]
 name = "unicase"
 version = "2.7.0"

Cargo.toml

@@ -56,6 +56,10 @@ tracing-appender = "0.2.3"
 urlencoding = "2.1.3"
 open = "5.3.0"
 url = "2.5"
+fluent-resmgr = "0.0.7"
+fluent-fallback = "0.7.1"
+fluent = "0.16.1"
+unic-langid = "0.9.5"
 
 [dev-dependencies]
 tempfile = "3.13.0"

assets/translations/en-US/notedeck.ftl

@@ -0,0 +1 @@
+universe-title = Universe with Fluent Translation

src/app.rs

@@ -37,6 +37,8 @@ use std::path::Path;
 use std::time::Duration;
 use tracing::{error, info, trace, warn};
 
+use fluent_resmgr::resource_manager::ResourceManager;
+
 #[derive(Debug, Eq, PartialEq, Clone)]
 pub enum DamusState {
     Initializing,
@@ -69,6 +71,8 @@ pub struct Damus {
     pub debug: bool,
     pub since_optimize: bool,
     pub textmode: bool,
+
+    pub res_mgr: ResourceManager,
 }
 
 fn handle_key_events(input: &egui::InputState, _pixels_per_point: f32, columns: &mut Columns) {
@@ -471,6 +475,8 @@ impl Damus {
         let app_rect_handler = AppSizeHandler::new(&path);
         let support = Support::new(&path);
 
+        let res_mgr = ResourceManager::new("./assets/translations/{locale}/{res_id}".into());
+
         Self {
             pool,
             debug,
@@ -492,6 +498,7 @@ impl Damus {
             path,
             app_rect_handler,
             support,
+            res_mgr,
         }
     }
 
@@ -557,6 +564,8 @@ impl Damus {
 
         let config = Config::new().set_ingester_threads(2);
 
+        let res_mgr = ResourceManager::new("../assets/translations/{locale}/{res_id}".into());
+
         Self {
             debug,
             unknown_ids: UnknownIds::default(),
@@ -585,6 +594,7 @@ impl Damus {
             path,
             app_rect_handler,
             support,
+            res_mgr,
         }
     }
 

src/ui/add_column.rs

@@ -2,10 +2,7 @@ use core::f32;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
-use egui::{
-    pos2, vec2, Align, Button, Color32, FontId, Id, ImageSource, Margin, Pos2, Rect, RichText,
-    Separator, Ui, Vec2,
-};
+use egui::{pos2, vec2, Align, Button, Color32, FontId, Id, ImageSource, Margin, Pos2, Rect, RichText, Separator, TextBuffer, Ui, Vec2};
 use nostrdb::Ndb;
 use tracing::error;
 
@@ -18,6 +15,9 @@ use crate::{
     Damus,
 };
 
+use fluent_resmgr::resource_manager::ResourceManager;
+use unic_langid::LanguageIdentifier;
+
 use super::{anim::AnimationHelper, padding};
 
 pub enum AddColumnResponse {
@@ -85,6 +85,7 @@ pub struct AddColumnView<'a> {
     key_state_map: &'a mut HashMap<Id, AcquireKeyState>,
     ndb: &'a Ndb,
     cur_account: Option<&'a UserAccount>,
+    res_mgr: &'a ResourceManager,
 }
 
 impl<'a> AddColumnView<'a> {
@@ -92,11 +93,13 @@ impl<'a> AddColumnView<'a> {
         key_state_map: &'a mut HashMap<Id, AcquireKeyState>,
         ndb: &'a Ndb,
         cur_account: Option<&'a UserAccount>,
+        res_mgr: &'a ResourceManager,
     ) -> Self {
         Self {
             key_state_map,
             ndb,
             cur_account,
+            res_mgr,
         }
     }
 
@@ -276,9 +279,22 @@ impl<'a> AddColumnView<'a> {
     }
 
     fn get_base_options(&self) -> Vec<ColumnOptionData> {
+        let default_locale: LanguageIdentifier = "en-US".parse().expect("Parsing failed.");
+        let resources = vec!["notedeck.ftl".into()];
+        let bundle = self.res_mgr
+            .get_bundle(
+                vec![default_locale],
+                resources,
+            )
+            .expect("Could not get bundle");
+        let mut errors = vec![];
+        let msg = bundle.get_message("universe-title").expect("Message exists");
+        let pattern = msg.value().expect("Message has a value");
+        let value: &'static mut str = bundle.format_pattern(pattern, None, &mut errors).to_string().leak();
+
         let mut vec = Vec::new();
         vec.push(ColumnOptionData {
-            title: "Universe",
+            title: value,
             description: "See the whole nostr universe",
             icon: egui::include_image!("../../assets/icons/universe_icon_dark_4x.png"),
             option: AddColumnOption::Universe,
@@ -356,6 +372,7 @@ pub fn render_add_column_routes(
         &mut app.view_state.id_state_map,
         &app.ndb,
         app.accounts.get_selected_account(),
+        &app.res_mgr,
     );
     let resp = match route {
         AddColumnRoute::Base => add_column_view.ui(ui),
@@ -463,6 +480,7 @@ mod preview {
                 &mut self.app.view_state.id_state_map,
                 &self.app.ndb,
                 self.app.accounts.get_selected_account(),
+                &self.app.res_mgr,
             )
             .ui(ui);
         }