//! Tauri 应用模块
//!
//! 增强诊断日志版本 - 详细记录窗口创建、前端加载和托盘初始化过程

use anyhow::Result;
use tauri::{
    menu::{Menu, MenuItem, Submenu},
    tray::TrayIconBuilder,
    Manager, Emitter,
};
use tracing::{info, warn};

pub mod commands;
pub mod state;

/// 应用状态
pub use state::AppState;
pub use state::AppTheme;

/// 运行 Tauri 应用
pub fn run() -> Result<()> {
    eprintln!();
    eprintln!("  [应用] 开始构建 Tauri 应用...");
    info!("启动 Tauri 应用...");

    // 检查构建上下文
    eprintln!("  [检查] 验证 Tauri 上下文...");
    let context = tauri::generate_context!();
    eprintln!("  ✓ 上下文生成成功");
    eprintln!("    - 应用标识：{}", context.config().identifier);
    eprintln!("    - 应用名称：{:?}", context.config().product_name);

    let app = tauri::Builder::default()
        .plugin(tauri_plugin_shell::init())
        .plugin(tauri_plugin_dialog::init())
        .plugin(tauri_plugin_fs::init())
        .manage(AppState::default())
        .invoke_handler(tauri::generate_handler![
            commands::start_recording,
            commands::stop_recording,
            commands::recognize_audio,
            commands::get_config_cmd,
            commands::save_config,
            commands::get_history,
            commands::clear_history,
            commands::get_theme,
            commands::set_theme,
            commands::select_model_file,
        ])
        .setup(|app| {
            info!("[设置] 初始化应用插件...");
            info!("  - tauri_plugin_shell: 已加载");
            info!("  - tauri_plugin_dialog: 已加载");
            info!("  - tauri_plugin_fs: 已加载");

            // 获取主窗口（由 tauri.conf.json 自动创建）
            info!("[设置] 获取主窗口...");
            if let Some(window) = app.get_webview_window("main") {
                info!("  ✓ 主窗口已存在 (由配置文件创建)");

                // 获取窗口位置和大小
                if let Ok(position) = window.outer_position() {
                    info!("  - 窗口位置：({}, {})", position.x, position.y);
                }
                if let Ok(size) = window.outer_size() {
                    info!("  - 窗口大小：{}x{}", size.width, size.height);
                }

                // 确保窗口可见并获得焦点
                info!("  - 显示窗口并聚焦...");
                let _ = window.show();
                let _ = window.set_focus();
                info!("  ✓ 窗口已显示并聚焦");

                // 再次检查状态
                match window.is_visible() {
                    Ok(true) => info!("  ✓ 窗口确认可见"),
                    Ok(false) => info!("  ⚠ 窗口仍然隐藏"),
                    Err(e) => info!("  ⚠ 可见性检查失败：{}", e),
                }

                // 获取前端 URL
                if let Ok(url) = window.url() {
                    info!("  - 前端 URL: {}", url);
                }
            } else {
                info!("  ⚠ 主窗口未找到，手动创建...");
                let window_result = tauri::WebviewWindowBuilder::new(
                    app,
                    "main",
                    tauri::WebviewUrl::App("index.html".into()),
                )
                .title("impress ASR Input")
                .inner_size(1000.0, 700.0)
                .min_inner_size(800.0, 600.0)
                .center()
                .visible(true)
                .build();

                match window_result {
                    Ok(_window) => {
                        info!("  ✓ 窗口手动创建成功");
                    }
                    Err(e) => {
                        info!("  ❌ 窗口创建失败：{}", e);
                        warn!("窗口创建失败：{}", e);
                    }
                }
            }

            // 设置系统托盘
            info!("  [设置] 配置系统托盘...");
            match setup_tray(app) {
                Ok(_) => info!("    ✓ 系统托盘设置完成"),
                Err(e) => {
                    info!("    ⚠ 系统托盘设置失败：{}", e);
                    warn!("托盘设置失败：{}", e);
                }
            }

            // 在 setup 结束时检查窗口状态
            info!("  [设置] setup 结束前检查窗口...");
            let all_windows = app.webview_windows();
            info!("    - 当前窗口数量：{}", all_windows.len());
            for (label, _) in all_windows.iter() {
                info!("    - 窗口：label='{}'", label);
                if let Some(win) = app.get_webview_window(label) {
                    let visible = win.is_visible().unwrap_or(false);
                    let pos = win.outer_position().ok();
                    let size = win.outer_size().ok();
                    let url = win.url().ok();
                    info!("      - 可见性：{}", if visible { "可见" } else { "隐藏" });
                    if let Some(p) = pos {
                        info!("      - 位置：({}, {})", p.x, p.y);
                    }
                    if let Some(s) = size {
                        info!("      - 大小：{}x{}", s.width, s.height);
                    }
                    if let Some(u) = url {
                        info!("      - URL: {}", u);
                    }
                }
            }

            info!("Tauri 应用设置完成");
            Ok(())
        })
        .on_window_event(|window, event| {
            // 处理窗口事件
            match event {
                tauri::WindowEvent::CloseRequested { api, .. } => {
                    info!("  [窗口] 关闭请求 - 隐藏窗口到托盘");
                    // 隐藏窗口而不是关闭
                    let _ = window.hide();
                    api.prevent_close();
                }
                tauri::WindowEvent::Focused(focused) => {
                    if *focused {
                        info!("  [窗口] 获得焦点");
                    } else {
                        info!("  [窗口] 失去焦点");
                    }
                }
                _ => {}
            }
        })
        .on_page_load(|_window, payload| {
            info!("[页面加载] URL: {}", payload.url());
            match payload.event() {
                tauri::webview::PageLoadEvent::Started => {
                    info!("  - 页面开始加载");
                }
                tauri::webview::PageLoadEvent::Finished => {
                    info!("  - 页面加载完成 ✓");
                }
            }
        })
        .build(context)
        .expect("构建 Tauri 应用失败");

    eprintln!("  ✓ Tauri 应用构建成功");
    info!("Tauri 应用启动成功");

    // 立即检查窗口 - 在 run() 之前
    info!("========================================");
    info!("[窗口] build 后立即检查窗口...");
    let windows = app.webview_windows();
    info!("    - 窗口数量：{}", windows.len());
    for (label, _) in windows.iter() {
        info!("    - 窗口标签：label='{}'", label);
    }

    // 尝试获取主窗口
    if let Some(window) = app.get_webview_window("main") {
        info!("[窗口] 主窗口信息:");
        match window.is_visible() {
            Ok(true) => info!("    - 可见性：可见 ✓"),
            Ok(false) => info!("    - 可见性：隐藏 ⚠"),
            Err(e) => info!("    - 可见性：检查失败 ({})", e),
        }
        match window.is_minimized() {
            Ok(true) => info!("    - 最小化：是 ⚠"),
            Ok(false) => info!("    - 最小化：否 ✓"),
            Err(e) => info!("    - 最小化：检查失败 ({})", e),
        }
        info!("    - 焦点：可设置 ✓");
    } else {
        info!("  ⚠ [窗口] 主窗口 (label='main') 未找到！");
        warn!("主窗口未找到");

        // 尝试获取任意窗口
        if let Some(first_window) = windows.keys().next() {
            info!("    - 但找到其他窗口：label='{}'", first_window);
            if let Some(win) = app.get_webview_window(first_window) {
                let _ = win.show();
                let _ = win.set_focus();
                info!("    ✓ 已显示该窗口");
            }
        }
    }

    eprintln!();
    eprintln!("  [运行] 进入事件循环...");
    info!("进入应用事件循环");

    app.run(|app_handle, event| {
        // 处理全局事件
        match event {
            tauri::RunEvent::Exit => {
                info!("  [事件] 应用退出");
            }
            tauri::RunEvent::ExitRequested { api, .. } => {
                // 检查是否允许完全退出
                let state = app_handle.state::<AppState>();
                if state.is_exit_allowed() {
                    info!("  [事件] 退出请求 - 允许完全退出");
                } else {
                    info!("  [事件] 退出请求 - 阻止退出（隐藏窗口到托盘）");
                    api.prevent_exit();
                }
            }
            tauri::RunEvent::Ready => {
                info!("  [事件] 应用已就绪");
            }
            _ => {}
        }
    });

    Ok(())
}

/// 设置系统托盘
fn setup_tray(app: &tauri::App) -> Result<()> {
    info!("    [托盘] 创建菜单项...");

    let show = MenuItem::with_id(app, "show", "显示窗口", true, None::<&str>)?;
    info!("      - '显示窗口' 菜单项已创建");

    let record = MenuItem::with_id(app, "record", "开始录音", true, None::<&str>)?;
    info!("      - '开始录音' 菜单项已创建");

    let settings = MenuItem::with_id(app, "settings", "设置", true, None::<&str>)?;
    info!("      - '设置' 菜单项已创建");

    // 主题子菜单
    let theme_light = MenuItem::with_id(app, "theme_light", "浅色主题", true, None::<&str>)?;
    let theme_dark = MenuItem::with_id(app, "theme_dark", "深色主题", true, None::<&str>)?;
    let theme_system = MenuItem::with_id(app, "theme_system", "跟随系统", true, None::<&str>)?;
    let theme_submenu = Submenu::with_items(app, "主题", true, &[&theme_light, &theme_dark, &theme_system])?;
    info!("      - '主题' 子菜单已创建（浅色/深色/跟随系统）");

    // 完全退出选项
    let quit_now = MenuItem::with_id(app, "quit_now", "完全退出", true, None::<&str>)?;
    info!("      - '完全退出' 菜单项已创建");

    info!("    [托盘] 组合菜单...");
    let menu = Menu::with_items(app, &[&show, &record, &settings, &theme_submenu, &quit_now])?;
    info!("      ✓ 菜单创建成功 (5 项 + 主题子菜单)");

    info!("    [托盘] 加载图标...");
    let icon = app.default_window_icon().cloned();
    match icon {
        Some(_) => info!("      ✓ 窗口图标加载成功"),
        None => {
            info!("      ⚠ 窗口图标未找到，使用默认图标");
            warn!("窗口图标未找到");
        }
    }

    info!("    [托盘] 创建托盘图标...");
    let _tray = TrayIconBuilder::new()
        .icon(app.default_window_icon().cloned().unwrap_or_else(|| {
            warn!("使用空图标");
            // 创建一个 1x1 的透明像素作为默认图标
            tauri::image::Image::new_owned(vec![0u8; 4], 1, 1)
        }))
        .menu(&menu)
        .show_menu_on_left_click(false)
        .on_menu_event(|app, event| {
            info!("托盘菜单事件：{:?}", event.id);
            match event.id.as_ref() {
                "show" => {
                    info!("  [托盘] '显示窗口' 被点击");
                    if let Some(window) = app.get_webview_window("main") {
                        let _ = window.show();
                        let _ = window.set_focus();
                        info!("    ✓ 窗口已显示并聚焦");
                    }
                }
                "record" => {
                    info!("  [托盘] '开始录音' 被点击");
                    info!("从托盘启动录音");
                }
                "settings" => {
                    info!("  [托盘] '设置' 被点击");
                    if let Some(window) = app.get_webview_window("main") {
                        let _ = window.show();
                        let _ = window.set_focus();
                        info!("    ✓ 窗口已显示并聚焦");
                    }
                }
                "theme_light" => {
                    info!("  [托盘] '浅色主题' 被点击");
                    let state = app.state::<AppState>();
                    state.set_theme(AppTheme::Light);
                    // 通知前端切换主题
                    if let Some(window) = app.get_webview_window("main") {
                        let _ = window.emit("theme-change", "light");
                    }
                }
                "theme_dark" => {
                    info!("  [托盘] '深色主题' 被点击");
                    let state = app.state::<AppState>();
                    state.set_theme(AppTheme::Dark);
                    if let Some(window) = app.get_webview_window("main") {
                        let _ = window.emit("theme-change", "dark");
                    }
                }
                "theme_system" => {
                    info!("  [托盘] '跟随系统' 被点击");
                    let state = app.state::<AppState>();
                    state.set_theme(AppTheme::System);
                    if let Some(window) = app.get_webview_window("main") {
                        let _ = window.emit("theme-change", "system");
                    }
                }
                "quit_now" => {
                    info!("  [托盘] '完全退出' 被点击");
                    // 允许完全退出
                    let state = app.state::<AppState>();
                    state.allow_exit();
                    // 关闭窗口
                    if let Some(window) = app.get_webview_window("main") {
                        let _ = window.close();
                    }
                    // 退出应用
                    app.exit(0);
                }
                _ => {}
            }
        })
        .build(app)?;

    info!("      ✓ 托盘图标创建成功");
    info!("系统托盘设置完成");

    Ok(())
}