using System;
using System.Drawing;
using System.IO;
using System.Net.Http;
using System.Text.Json;
using System.Timers;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Input;
using XafPet.Desktop.PetEngine;
using Timer = System.Timers.Timer;

namespace XafPet.Desktop;

public partial class MainWindow : Window
{
    private NotifyIcon? _trayIcon;
    private ApiClient? _api;
    private Timer? _taskTimer;
    private Timer? _energyTimer;
    private Timer? _waterTimer;
    private string _baseUrl = "http://localhost:9082";

    public MainWindow()
    {
        InitializeComponent();
        RootGrid.MouseLeftButtonDown += (s, e) =>
        {
            if (e.ButtonState == MouseButtonState.Pressed) DragMove();
        };
        PetHost.InteractionReceived += OnInteractionReceived;
        Loaded += OnLoaded;
        Closed += OnClosed;
    }

    private void OnLoaded(object sender, RoutedEventArgs e)
    {
        var token = TokenStore.Load();
        _api = new ApiClient(new HttpClient(), _baseUrl, token ?? "dev-token");
        StartPolling();
        SetupTray();
        _ = SyncMascotAsync();
    }

    private void StartPolling()
    {
        _taskTimer = new Timer(30_000) { AutoReset = true };
        _taskTimer.Elapsed += async (_, _) => await PollTasksAsync();
        _taskTimer.Start();

        _energyTimer = new Timer(60_000) { AutoReset = true };
        _energyTimer.Elapsed += async (_, _) => await PollHealthAsync();
        _energyTimer.Start();

        StartWaterReminder();
    }

    private async Task PollTasksAsync()
    {
        if (_api == null) return;
        try
        {
            var tasks = await _api.GetTodayTasksAsync();
            var state = StateManager.MapState(tasks ?? new List<CfcTask>(), null, null, false);
            PushState(state, "tasks");
        }
        catch (ApiException ex) { PushBubble($"服务暂时不可用({ex.ApiCode})"); }
        catch (Exception) { PushBubble("连接后端失败，请检查服务"); }
    }

    private async Task PollHealthAsync()
    {
        if (_api == null) return;
        try
        {
            var energy = await _api.GetEnergyOverviewAsync();
            var checkin = await _api.GetDailyCheckinAsync();
            var state = StateManager.MapState(null, energy, checkin, false);
            PushState(state, "health");
        }
        catch (Exception) { /* 静默 */ }
    }

    private void PushState(PetState state, string reason)
    {
        var payload = new PetStatePayload(StateManager.StateToCamelCase(state), reason, null);
        PetHost.NotifyState(JsonSerializer.Serialize(payload));
    }

    private void PushBubble(string text)
    {
        PetHost.ShowBubble(text, 5000);
    }

    private void SetupTray()
    {
        var menu = new ContextMenuStrip();
        menu.Items.Add("设置", null, (_, _) => ShowSettings());
        menu.Items.Add("显示/隐藏", null, (_, _) => ToggleVisible());
        menu.Items.Add("退出", null, (_, _) => { _trayIcon?.Dispose(); System.Windows.Application.Current.Shutdown(); });

        _trayIcon = new NotifyIcon
        {
            Text = "浠艾福桌面宠物",
            Icon = SystemIcons.Application,
            ContextMenuStrip = menu,
            Visible = true
        };
        _trayIcon.DoubleClick += (_, _) => ToggleVisible();
    }

    private void ToggleVisible()
    {
        Visibility = Visibility == Visibility.Visible ? Visibility.Hidden : Visibility.Visible;
    }

    private void ShowSettings()
    {
        var win = new SettingsWindow(TokenStore.Load(), _baseUrl) { Owner = this };
        if (win.ShowDialog() == true)
        {
            _baseUrl = win.BaseUrl;
            if (!string.IsNullOrEmpty(win.Token)) TokenStore.Save(win.Token);
            _api = new ApiClient(new HttpClient(), _baseUrl, TokenStore.Load() ?? "dev-token");
            StopPolling();
            StartPolling();
        }
    }

    private void StopPolling()
    {
        _taskTimer?.Stop(); _energyTimer?.Stop(); _waterTimer?.Stop();
        _taskTimer?.Dispose(); _energyTimer?.Dispose(); _waterTimer?.Dispose();
        _taskTimer = _energyTimer = _waterTimer = null;
    }

    private void OnClosed(object? sender, EventArgs e)
    {
        StopPolling();
        _trayIcon?.Dispose();
    }

    // ── 喝水提醒 ─────────────────────────────────────────────
    private void StartWaterReminder()
    {
        _waterTimer = new Timer(60 * 60 * 1000) { AutoReset = true };
        _waterTimer.Elapsed += async (_, _) => await CheckWaterAsync();
        _waterTimer.Start();
        _ = CheckWaterAsync();
    }

    private async Task CheckWaterAsync()
    {
        if (_api == null) return;
        var hour = DateTime.Now.Hour;
        if (hour < 10 || hour > 20) return;
        try
        {
            var checkin = await _api.GetDailyCheckinAsync();
            if (checkin != null && !checkin.Items.Contains("water"))
            {
                PushState(PetState.WaitingForInteraction, "drink_water");
                PetHost.ShowBubble("该喝水啦～点我确认完成！", 15000);
            }
        }
        catch (Exception) { }
    }

    private void OnInteractionReceived(string action, string? dataJson)
    {
        switch (action)
        {
            case "click":
                _ = HandleClickAsync();
                break;
            case "pet":
                PetHost.ShowBubble("嘻嘻～", 2000);
                break;
        }
    }

    private async Task HandleClickAsync()
    {
        if (_api == null) return;
        try
        {
            var result = await _api.CompleteDrinkWaterAsync();
            if (result?.IsSuccess == true)
            {
                PushState(PetState.Happy, "drink_complete");
                PetHost.ShowBubble("喝水打卡成功！太棒了～", 4000);
            }
        }
        catch (Exception)
        {
            PushBubble("打卡失败，请稍后再试");
        }
    }

    // ── 吉祥物同步 ───────────────────────────────────────────
    private async Task SyncMascotAsync()
    {
        if (_api == null) return;
        try
        {
            var mascot = await _api.GetMascotAsync();
            var petName = mascot?.MascotId ?? "xibao";
            var cfgPath = Path.Combine(AppContext.BaseDirectory, "DefaultPets", petName, "pet-config.json");
            if (File.Exists(cfgPath))
            {
                var json = File.ReadAllText(cfgPath);
                var parsed = PetConfig.Parse(json);
                PetHost.LoadPetConfig(JsonSerializer.Serialize(parsed));
            }
        }
        catch (Exception) { /* 默认浠宝 */ }
    }
}