Display local language name in the selector

Cargo.toml

@@ -44,6 +44,7 @@ egui_extras        = { version = "0.28", features = ["svg"] }
 enigo              = { version = "0.2" }
 futures            = { version = "0.3" }
 global-hotkey      = { version = "0.5" }
+language           = { version = "0.1", features = ["serde"] }
 parking_lot        = { version = "0.12" }
 reqwew             = { version = "0.2" }
 rodio              = { version = "0.19" }

src/component/function.rs

@@ -48,10 +48,10 @@ impl ComboBoxItem for Function {
 		[Self::Rewrite, Self::Translate]
 	}
 
-	fn as_str(&self) -> &'static str {
-		match self {
+	fn as_str(&self) -> Cow<str> {
+		Cow::Borrowed(match self {
 			Self::Rewrite | Self::RewriteDirectly => "Rewrite",
 			Self::Translate | Self::TranslateDirectly => "Translate",
-		}
+		})
 	}
 }

src/component/openai.rs

@@ -1,3 +1,5 @@
+// std
+use std::borrow::Cow;
 // crates.io
 use async_openai::{
 	config::OpenAIConfig,
@@ -82,10 +84,10 @@ impl ComboBoxItem for Model {
 		[Self::Gpt4o, Self::Gpt35Turbo]
 	}
 
-	fn as_str(&self) -> &'static str {
-		match self {
+	fn as_str(&self) -> Cow<str> {
+		Cow::Borrowed(match self {
 			Self::Gpt4o => "gpt-4o",
 			Self::Gpt35Turbo => "gpt-3.5-turbo",
-		}
+		})
 	}
 }

src/component/setting.rs

@@ -1,11 +1,12 @@
-mod language;
-use language::Language;
+// A fallback for users who use older settings.
+mod fallback;
 
 // std
 use std::{borrow::Cow, fs, path::PathBuf};
 // crates.io
 use app_dirs2::AppDataType;
 use async_openai::config::OPENAI_API_BASE;
+use language::Language;
 use serde::{Deserialize, Serialize};
 use tracing::Level;
 // self
@@ -131,7 +132,9 @@ impl Rewrite {
 #[serde(rename_all = "kebab-case")]
 pub struct Translation {
 	pub additional_prompt: String,
+	#[serde(deserialize_with = "fallback::translation_a")]
 	pub a: Language,
+	#[serde(deserialize_with = "fallback::translation_b")]
 	pub b: Language,
 }
 impl Translation {
@@ -223,13 +226,13 @@ impl ComboBoxItem for LogLevel {
 		[Self::Trace, Self::Debug, Self::Info, Self::Warn, Self::Error]
 	}
 
-	fn as_str(&self) -> &'static str {
-		match self {
+	fn as_str(&self) -> Cow<str> {
+		Cow::Borrowed(match self {
 			Self::Trace => "Trace",
 			Self::Debug => "Debug",
 			Self::Info => "Info",
 			Self::Warn => "Warn",
 			Self::Error => "Error",
-		}
+		})
 	}
 }

src/component/setting/fallback.rs

@@ -0,0 +1,17 @@
+// crates.io
+use language::Language;
+use serde::{Deserialize, Deserializer};
+
+pub fn translation_a<'de, D>(d: D) -> Result<Language, D::Error>
+where
+	D: Deserializer<'de>,
+{
+	Ok(Language::deserialize(d).unwrap_or(Language::ZhCn))
+}
+
+pub fn translation_b<'de, D>(d: D) -> Result<Language, D::Error>
+where
+	D: Deserializer<'de>,
+{
+	Ok(Language::deserialize(d).unwrap_or(Language::EnGb))
+}