use tauri::{command, AppHandle};
use serde::{Deserialize, Serialize};

/// 应用信息结构
#[derive(Debug, Serialize, Deserialize)]
pub struct AppInfo {
    pub name: String,
    pub version: String,
    pub platform: String,
}

/// 选择目录命令
/// 遵循 Tauri 开发规范的系统集成设计
#[command]
pub fn select_directory(app: AppHandle) -> Result<Option<String>, String> {
    use tauri_plugin_dialog::DialogExt;

    // 使用同步方式打开文件夹选择对话框
    let dialog = app.dialog().file().set_title("选择项目目录");

    // 创建一个简单的阻塞实现
    let (tx, rx) = std::sync::mpsc::channel();

    dialog.pick_folder(move |folder_path| {
        let _ = tx.send(folder_path);
    });

    // 等待结果，设置超时
    match rx.recv_timeout(std::time::Duration::from_secs(30)) {
        Ok(Some(path)) => {
            let path_str = path.to_string();
            Ok(Some(path_str))
        }
        Ok(None) => Ok(None),
        Err(_) => Err("对话框操作超时或失败".to_string()),
    }
}

/// 获取应用信息命令
#[command]
pub async fn get_app_info() -> Result<AppInfo, String> {
    Ok(AppInfo {
        name: "MixVideo Desktop".to_string(),
        version: env!("CARGO_PKG_VERSION").to_string(),
        platform: std::env::consts::OS.to_string(),
    })
}

/// 验证目录是否存在命令
#[command]
pub async fn validate_directory(path: String) -> Result<bool, String> {
    use std::path::Path;
    
    let path = Path::new(&path);
    Ok(path.exists() && path.is_dir())
}

/// 获取目录名称命令
#[command]
pub async fn get_directory_name(path: String) -> Result<String, String> {
    use std::path::Path;
    
    let path = Path::new(&path);
    match path.file_name() {
        Some(name) => Ok(name.to_string_lossy().to_string()),
        None => Err("无效的目录路径".to_string()),
    }
}