feat: 支持 Scala 语言环境安装

Author: qianmoQ

src-tauri/Cargo.lock

@@ -33,3 +33,7 @@ reqwest = { version = "0.11", features = ["json", "stream"] }
 futures-util = "0.3"
 rfd = "0.15"
 fix-path-env = { git = "https://github.com/tauri-apps/fix-path-env-rs" }
+async-trait = "0.1"
+zip = "2.2.2"
+flate2 = "1.0"
+tar = "0.4"

src-tauri/Cargo.toml

@@ -0,0 +1,47 @@
+use crate::env_manager::{EnvironmentInfo, EnvironmentManager};
+use log::info;
+use tauri::{AppHandle, State};
+use tokio::sync::Mutex;
+
+pub type EnvironmentManagerState = Mutex<EnvironmentManager>;
+
+#[tauri::command]
+pub async fn get_environment_info(
+    language: String,
+    env_manager: State<'_, EnvironmentManagerState>,
+) -> Result<EnvironmentInfo, String> {
+    info!("获取 {} 环境信息", language);
+    let manager = env_manager.lock().await;
+    manager.get_environment_info(&language).await
+}
+
+#[tauri::command]
+pub async fn download_and_install_version(
+    language: String,
+    version: String,
+    app_handle: AppHandle,
+    env_manager: State<'_, EnvironmentManagerState>,
+) -> Result<String, String> {
+    info!("下载并安装 {} 版本 {}", language, version);
+    let manager = env_manager.lock().await;
+    manager.download_and_install_version(&language, &version, app_handle).await
+}
+
+#[tauri::command]
+pub async fn switch_environment_version(
+    language: String,
+    version: String,
+    env_manager: State<'_, EnvironmentManagerState>,
+) -> Result<(), String> {
+    info!("切换 {} 到版本 {}", language, version);
+    let manager = env_manager.lock().await;
+    manager.switch_version(&language, &version).await
+}
+
+#[tauri::command]
+pub async fn get_supported_environment_languages(
+    env_manager: State<'_, EnvironmentManagerState>,
+) -> Result<Vec<String>, String> {
+    let manager = env_manager.lock().await;
+    Ok(manager.get_supported_languages())
+}

src-tauri/src/env_commands.rs

@@ -0,0 +1,176 @@
+use async_trait::async_trait;
+use log::{debug, error, info};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::path::PathBuf;
+use tauri::{AppHandle, Emitter};
+
+// 环境版本信息
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct EnvironmentVersion {
+    pub version: String,
+    pub download_url: String,
+    pub install_path: Option<String>,
+    pub is_installed: bool,
+    pub size: Option<u64>,
+    pub release_date: Option<String>,
+}
+
+// 环境管理器响应
+#[derive(Debug, Serialize, Deserialize)]
+pub struct EnvironmentInfo {
+    pub language: String,
+    pub current_version: Option<String>,
+    pub installed_versions: Vec<EnvironmentVersion>,
+    pub available_versions: Vec<EnvironmentVersion>,
+}
+
+// 下载进度事件
+#[derive(Debug, Serialize, Clone)]
+pub struct DownloadProgress {
+    pub language: String,
+    pub version: String,
+    pub downloaded: u64,
+    pub total: u64,
+    pub percentage: f64,
+    pub status: DownloadStatus,
+}
+
+#[derive(Debug, Serialize, Clone)]
+#[serde(rename_all = "lowercase")]
+pub enum DownloadStatus {
+    Downloading,
+    Extracting,
+    Installing,
+    Completed,
+    Failed,
+}
+
+// 语言环境提供者特征
+#[async_trait]
+pub trait EnvironmentProvider: Send + Sync {
+    // 获取语言名称
+    fn get_language(&self) -> &'static str;
+
+    // 获取可用版本列表
+    async fn fetch_available_versions(&self) -> Result<Vec<EnvironmentVersion>, String>;
+
+    // 获取已安装版本列表
+    async fn get_installed_versions(&self) -> Result<Vec<EnvironmentVersion>, String>;
+
+    // 下载并安装指定版本
+    async fn download_and_install(
+        &self,
+        version: &str,
+        app_handle: AppHandle,
+    ) -> Result<String, String>;
+
+    // 切换到指定版本
+    async fn switch_version(&self, version: &str) -> Result<(), String>;
+
+    // 获取当前激活的版本
+    async fn get_current_version(&self) -> Result<Option<String>, String>;
+
+    // 获取安装目录
+    fn get_install_dir(&self) -> PathBuf;
+}
+
+// 环境管理器
+pub struct EnvironmentManager {
+    providers: HashMap<String, Box<dyn EnvironmentProvider>>,
+}
+
+impl EnvironmentManager {
+    pub fn new() -> Self {
+        Self {
+            providers: HashMap::new(),
+        }
+    }
+
+    pub fn register_provider(&mut self, provider: Box<dyn EnvironmentProvider>) {
+        let language = provider.get_language().to_string();
+        info!("注册环境提供者: {}", language);
+        self.providers.insert(language, provider);
+    }
+
+    pub async fn get_environment_info(
+        &self,
+        language: &str,
+    ) -> Result<EnvironmentInfo, String> {
+        let provider = self
+            .providers
+            .get(language)
+            .ok_or_else(|| format!("暂未支持 {} 语言，请前往 github 提供 issus", language))?;
+
+        info!("获取 {} 环境信息", language);
+
+        let current_version = provider.get_current_version().await.ok().flatten();
+        let installed_versions = provider.get_installed_versions().await.unwrap_or_default();
+        let available_versions = provider.fetch_available_versions().await.unwrap_or_default();
+
+        Ok(EnvironmentInfo {
+            language: language.to_string(),
+            current_version,
+            installed_versions,
+            available_versions,
+        })
+    }
+
+    pub async fn download_and_install_version(
+        &self,
+        language: &str,
+        version: &str,
+        app_handle: AppHandle,
+    ) -> Result<String, String> {
+        let provider = self
+            .providers
+            .get(language)
+            .ok_or_else(|| format!("暂未支持 {} 语言，请前往 github 提供 issus", language))?;
+
+        info!("开始下载并安装 {} 版本 {}", language, version);
+        provider.download_and_install(version, app_handle).await
+    }
+
+    pub async fn switch_version(&self, language: &str, version: &str) -> Result<(), String> {
+        let provider = self
+            .providers
+            .get(language)
+            .ok_or_else(|| format!("暂未支持 {} 语言，请前往 github 提供 issus", language))?;
+
+        info!("切换 {} 到版本 {}", language, version);
+        provider.switch_version(version).await
+    }
+
+    pub fn get_supported_languages(&self) -> Vec<String> {
+        self.providers.keys().cloned().collect()
+    }
+}
+
+// 辅助函数：发送下载进度事件
+pub fn emit_download_progress(
+    app_handle: &AppHandle,
+    language: &str,
+    version: &str,
+    downloaded: u64,
+    total: u64,
+    status: DownloadStatus,
+) {
+    let percentage = if total > 0 {
+        (downloaded as f64 / total as f64) * 100.0
+    } else {
+        0.0
+    };
+
+    let progress = DownloadProgress {
+        language: language.to_string(),
+        version: version.to_string(),
+        downloaded,
+        total,
+        percentage,
+        status,
+    };
+
+    if let Err(e) = app_handle.emit("env-download-progress", progress) {
+        error!("发送下载进度事件失败: {}", e);
+    }
+}

src-tauri/src/env_manager.rs

@@ -0,0 +1,3 @@
+pub mod scala;
+
+pub use scala::ScalaEnvironmentProvider;