// Auto-updater module for MindOS Desktop
// Uses Tauri's built-in updater to check and install updates

use tauri::{AppHandle, Manager, Emitter};
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct UpdateStatus {
    pub available: bool,
    pub version: Option<String>,
    pub download_url: Option<String>,
    pub release_notes: Option<String>,
}

/// Check for updates and return status
pub async fn check_for_updates(app: AppHandle) -> Result<UpdateStatus, String> {
    println!("[MindOS] Checking for updates...");

    // In a real implementation, this would:
    // 1. Fetch latest version from GitHub releases or update server
    // 2. Compare with current version
    // 3. Return update info if available

    // For spike: return mock data
    let current_version = env!("CARGO_PKG_VERSION");
    println!("[MindOS] Current version: {}", current_version);

    // Emit event to frontend
    let _ = app.emit("update-status", UpdateStatus {
        available: false,
        version: Some(current_version.to_string()),
        download_url: None,
        release_notes: None,
    });

    Ok(UpdateStatus {
        available: false,
        version: Some(current_version.to_string()),
        download_url: None,
        release_notes: None,
    })
}

/// Tauri command to manually check for updates
#[tauri::command]
pub async fn check_updates_command(app: AppHandle) -> Result<UpdateStatus, String> {
    check_for_updates(app).await
}

/// Tauri command to install pending update
#[tauri::command]
pub async fn install_update_command() -> Result<(), String> {
    println!("[MindOS] Installing update...");

    // In a real implementation, this would:
    // 1. Download the update package
    // 2. Verify signature
    // 3. Install and restart

    // For spike: just log
    Ok(())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_update_status_serialization() {
        let status = UpdateStatus {
            available: true,
            version: Some("0.2.0".to_string()),
            download_url: Some("https://example.com/update".to_string()),
            release_notes: Some("Bug fixes".to_string()),
        };

        let json = serde_json::to_string(&status).unwrap();
        assert!(json.contains("0.2.0"));
    }
}
