2 files changed, 86 insertions, 5 deletions

diff --git a/server/locale/src/lib.rs b/server/locale/src/lib.rs
index 1d01e4e1..9d55c7cd 100644
--- a/server/locale/src/lib.rs
+++ b/server/locale/src/lib.rs
@@ -16,6 +16,8 @@
 
 */
 
+pub mod message;
+
 use anyhow::anyhow;
 use hurrycurry_protocol::Message;
 use std::{
@@ -122,15 +124,15 @@ macro_rules! tre_param {
     };
 }
 
-pub struct Strings(HashMap<String, String>);
-impl Index<&'static str> for Strings {
+pub struct Locale(HashMap<String, String>);
+impl Index<&'static str> for Locale {
     type Output = str;
     fn index(&self, index: &'static str) -> &Self::Output {
         self.0.get(index).map(|s| s.as_str()).unwrap_or(index)
     }
 }
 
-impl Strings {
+impl Locale {
     pub fn load() -> anyhow::Result<Self> {
         Ok(Self(
             include_str!("../../../locale/en.ini")
@@ -146,9 +148,12 @@ impl Strings {
                 .collect::<anyhow::Result<HashMap<_, _>>>()?,
         ))
     }
+    pub fn get(&self, id: &str) -> Option<&str> {
+        self.0.get(id).map(|x| x.as_str())
+    }
 }
 
-static TR: LazyLock<Strings> = LazyLock::new(|| Strings::load().unwrap());
+pub static FALLBACK_LOCALE: LazyLock<Locale> = LazyLock::new(|| Locale::load().unwrap());
 pub fn tr(s: &'static str) -> &'static str {
-    &TR[s]
+    &FALLBACK_LOCALE[s]
 }
diff --git a/server/locale/src/message.rs b/server/locale/src/message.rs
new file mode 100644
index 00000000..bedf45fd
--- /dev/null
+++ b/server/locale/src/message.rs
@@ -0,0 +1,76 @@
+/*
+    Hurry Curry! - a game about cooking
+    Copyright (C) 2025 Hurry Curry! Contributors
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, version 3 of the License only.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+
+use crate::Locale;
+use hurrycurry_protocol::{Gamedata, Message};
+
+pub trait MessageDisplayExt {
+    fn display_message(&self, locale: &Locale, data: &Gamedata, style: &DisplayStyle) -> String;
+}
+impl MessageDisplayExt for Message {
+    fn display_message(&self, locale: &Locale, data: &Gamedata, style: &DisplayStyle) -> String {
+        display_message_inner(self, locale, data, style)
+    }
+}
+fn display_message_inner(
+    message: &Message,
+    locale: &Locale,
+    data: &Gamedata,
+    style: &DisplayStyle,
+) -> String {
+    let DisplayStyle {
+        default,
+        error,
+        tile_item,
+        highlighted,
+    } = style;
+    match message {
+        Message::Translation { id, params } => {
+            let Some(template) = locale.get(&id) else {
+                return format!("[translation missing: {error}{id}{default}]");
+            };
+            let mut s = template.to_string();
+            for (i, p) in params.iter().enumerate() {
+                s = s.replace(&format!("{{{i}}}"), &p.display_message(locale, data, style));
+            }
+            s
+        }
+        Message::Text(s) => format!("{highlighted}{s}{default}"),
+        Message::Item(item_index) => format!("{tile_item}{}{default}", data.item_name(*item_index)),
+        Message::Tile(tile_index) => format!("{tile_item}{}{default}", data.tile_name(*tile_index)),
+    }
+}
+
+pub struct DisplayStyle<'a> {
+    default: &'a str,
+    error: &'a str,
+    tile_item: &'a str,
+    highlighted: &'a str,
+}
+pub static PLAIN: DisplayStyle = DisplayStyle {
+    default: "",
+    error: "",
+    tile_item: "",
+    highlighted: "",
+};
+pub static COLORED: DisplayStyle = DisplayStyle {
+    default: "\x1b[0m",
+    error: "\x1b[31m",
+    tile_item: "\x1b[34m",
+    highlighted: "\x1b[1m",
+};