Chore: Refactor Rust-Backend Modularity

src-tauri/src/commands/updater.rs

@@ -0,0 +1,126 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Clone)]
+pub struct ReleaseInfo {
+    pub tag_name:     String,
+    pub name:         String,
+    pub body:         String,
+    pub published_at: String,
+    pub html_url:     String,
+}
+
+#[derive(Clone, Serialize)]
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+struct UpdateProgress {
+    downloaded: u64,
+    total:      Option<u64>,
+}
+
+#[tauri::command]
+pub async fn list_releases() -> Result<Vec<ReleaseInfo>, String> {
+    use tauri_plugin_http::reqwest;
+
+    #[derive(Deserialize)]
+    struct GhRelease {
+        tag_name:     String,
+        name:         Option<String>,
+        body:         Option<String>,
+        published_at: Option<String>,
+        html_url:     String,
+    }
+
+    let client = reqwest::Client::builder()
+        .user_agent("Moku")
+        .build()
+        .map_err(|e| e.to_string())?;
+
+    let resp = client
+        .get("https://api.github.com/repos/moku-project/Moku/releases?per_page=30")
+        .send()
+        .await
+        .map_err(|e| e.to_string())?;
+
+    if !resp.status().is_success() {
+        return Err(format!("GitHub API returned {}", resp.status()));
+    }
+
+    let releases: Vec<GhRelease> = serde_json::from_str(
+        &resp.text().await.map_err(|e| e.to_string())?
+    ).map_err(|e| e.to_string())?;
+
+    Ok(releases.into_iter().map(|r| ReleaseInfo {
+        tag_name:     r.tag_name.clone(),
+        name:         r.name.unwrap_or_else(|| r.tag_name.clone()),
+        body:         r.body.unwrap_or_default(),
+        published_at: r.published_at.unwrap_or_default(),
+        html_url:     r.html_url,
+    }).collect())
+}
+
+#[tauri::command]
+#[allow(unused_variables)]
+pub async fn download_and_install_update(app: tauri::AppHandle, tag: String) -> Result<(), String> {
+    #[cfg(not(target_os = "windows"))]
+    return Err("Native install is Windows-only; open the GitHub release page instead.".into());
+
+    #[cfg(target_os = "windows")]
+    {
+        use std::io::Write;
+        use tauri::Emitter;
+        use tauri_plugin_http::reqwest;
+
+        #[derive(Deserialize)]
+        struct Asset { name: String, browser_download_url: String, size: u64 }
+        #[derive(Deserialize)]
+        struct Release { assets: Vec<Asset> }
+
+        let client = reqwest::Client::builder()
+            .user_agent("Moku")
+            .build()
+            .map_err(|e| e.to_string())?;
+
+        let resp = client
+            .get(format!("https://api.github.com/repos/moku-project/Moku/releases/tags/{}", tag))
+            .send()
+            .await
+            .map_err(|e| e.to_string())?;
+
+        if !resp.status().is_success() {
+            return Err(format!("GitHub API returned {} for tag {}", resp.status(), tag));
+        }
+
+        let release: Release = serde_json::from_str(
+            &resp.text().await.map_err(|e| e.to_string())?
+        ).map_err(|e| e.to_string())?;
+
+        let asset = release.assets
+            .into_iter()
+            .find(|a| a.name.ends_with("_x64-setup.exe"))
+            .ok_or_else(|| format!("No x64-setup.exe asset found in release {}", tag))?;
+
+        let total = if asset.size > 0 { Some(asset.size) } else { None };
+        let mut resp = client.get(&asset.browser_download_url).send().await.map_err(|e| e.to_string())?;
+
+        let tmp_path = std::env::temp_dir().join(&asset.name);
+        let mut file = std::fs::File::create(&tmp_path).map_err(|e| e.to_string())?;
+        let mut downloaded: u64 = 0;
+
+        while let Some(chunk) = resp.chunk().await.map_err(|e| e.to_string())? {
+            file.write_all(&chunk).map_err(|e| e.to_string())?;
+            downloaded += chunk.len() as u64;
+            let _ = app.emit("update-progress", UpdateProgress { downloaded, total });
+        }
+        drop(file);
+
+        use std::os::windows::process::CommandExt;
+        const CREATE_NO_WINDOW: u32 = 0x08000000;
+        std::process::Command::new(&tmp_path)
+            .creation_flags(CREATE_NO_WINDOW)
+            .spawn()
+            .map_err(|e| e.to_string())?;
+
+        let _ = app.emit("update-launching", ());
+
+        Ok(())
+    }
+}