@using Sandbox;
@using Sandbox.UI;
@using System;
@using System.Linq;
@using System.Collections.Generic;
@inherits PanelComponent
@attribute [StyleSheet( "PushHud.scss" )]

<root class="hud-root">

    <div class="score-box">
        <div class="score-card">
            <label class="score-title">@L( "Сбито", "Score" )</label>
            <label class="score-value">@GetScore()</label>
        </div>
        <div class="score-card death">
            <label class="score-title">@L( "Смерти", "Deaths" )</label>
            <label class="score-value">@GetDeaths()</label>
        </div>
        <div class="score-card highlight">
            <label class="score-title">@L( "Рекорд", "Best" )</label>
            <label class="score-value">@GetHighScore()</label>
        </div>
    </div>

    <div class="scoreboard-box">
        <div class="scoreboard-header">
            <label class="header-title">@L( "ИГРОКИ", "PLAYERS" )</label>
        </div>
        <div class="player-list">
            @foreach ( var p in GetPlayerList() )
            {
                <div class="player-row @(p.IsLocal ? "local" : "")">
                    <label class="player-name">@p.Name</label>
                    <label class="player-score">@p.Score</label>
                </div>
            }
        </div>
    </div>

    <div class="hotbar-container">
        @if ( ShopManager.Instance != null )
        {
            @foreach ( var item in ShopManager.Instance.Items )
            {
                bool isSelected = item == ShopManager.Instance.SelectedItem;
                
                <div class="slot-wrapper">
                    <div class="hotbar-slot @(isSelected ? "selected" : "") @(!item.IsUnlocked ? "locked" : "")" 
                         onclick="@(() => ShopManager.Instance.TryBuyOrSelect(item))">
                        
                        <label class="slot-name">@item.GetName( CurrentLanguage )</label>
                        
                        @if ( !item.IsUnlocked )
                        {
                            <label class="slot-cost">💰 @item.Cost</label>
                        }
                    </div>
                    <div class="key-badge @(isSelected ? "selected" : "")">@item.Key</div>
                </div>
            }
        }
    </div>

    <div class="top-left-box">
        <div class="chat-box @(IsChatOpen ? "open" : "")">
            <div class="chat-messages">
                @foreach ( var msg in CanvasMessages )
                {
                    <div class="chat-row">
                        <label class="chat-author">@msg.Author:</label>
                        <label class="chat-text">@msg.Text</label>
                    </div>
                }
            </div>

            @if ( IsChatOpen )
            {
                <div class="chat-input-row">
                    <textentry @ref="ChatInput" onsubmit="@SendChatMessage" placeholder="@L( "Введите сообщение...", "Type a message..." )"></textentry>
                </div>
            }
            else
            {
                <label class="chat-hint" onclick="@OpenChat">@L( "Нажмите [Enter] для чата", "Press [Enter] to chat" )</label>
            }
        </div>
    </div>

    <div class="cooldown-box">
        <label class="cooldown-title">@L( "Перезарядка", "Cooldown" )</label>
        <div class="bar-background">
            <div class="bar-fill" style="width: @($"{GetPercent():F1}%");"></div>
        </div>
    </div>

    @if ( !IsMenuOpen && !IsSettingsOpen )
    {
        <button class="side-settings-btn" onclick="@OpenMenu">
            <label class="key-hint">[ESC]</label>
            <label class="icon">⚙</label>
        </button>
    }

    @if ( IsMenuOpen )
    {
        <div class="menu-overlay">
            <div class="menu-card">
                <label class="menu-title">ONE MORE PUSH</label>
                <button class="menu-btn play" onclick="@StartGame">@L( "ИГРАТЬ", "PLAY" )</button>
                <button class="menu-btn" onclick="@OpenSettings">@L( "НАСТРОЙКИ", "SETTINGS" )</button>
                <button class="menu-btn quit" onclick="@QuitGame">@L( "ВЫХОД", "QUIT" )</button>
            </div>
        </div>
    }

    @if ( IsSettingsOpen )
    {
        <div class="menu-overlay">
            <div class="menu-card settings-card">
                <label class="menu-title">@L( "НАСТРОЙКИ", "SETTINGS" )</label>
                <div class="settings-content">
                    <div class="setting-item lang-row">
                        <label class="setting-label">@L( "ЯЗЫК:", "LANGUAGE:" )</label>
                        <div class="lang-selector">
                            <button class="lang-btn @(CurrentLanguage == "EN" ? "active" : "")" onclick="@(() => SetLanguage("EN"))">EN</button>
                            <button class="lang-btn @(CurrentLanguage == "RU" ? "active" : "")" onclick="@(() => SetLanguage("RU"))">RU</button>
                        </div>
                    </div>

                    <div class="setting-item lang-row">
                        <label class="setting-label">@L( "СПАВН БОТОВ:", "SPAWN BOTS:" )</label>
                        <button class="lang-btn @(BotSpawner.EnableBots ? "active" : "")" onclick="@ToggleBots">
                            @(BotSpawner.EnableBots ? L( "ВКЛ", "ON" ) : L( "ВЫКЛ", "OFF" ))
                        </button>
                    </div>

                    <div class="setting-item lang-row">
                        <label class="setting-label">@L( "МУЗЫКА:", "MUSIC:" )</label>
                        <button class="lang-btn @(EnableMusic ? "active" : "")" onclick="@ToggleMusic">
                            @(EnableMusic ? L( "ВКЛ", "ON" ) : L( "ВЫКЛ", "OFF" ))
                        </button>
                    </div>

                    <label class="setting-item">@L( "ЧУВСТВИТЕЛЬНОСТЬ: 1.0", "SENSITIVITY: 1.0" )</label>
                </div>
                <button class="menu-btn" onclick="@CloseSettings">@L( "НАЗАД", "BACK" )</button>
            </div>
        </div>
    }

</root>

@code {
    [Property] public PushAbility PushAbility { get; set; }

    public bool IsMenuOpen { get; set; } = true;
    public bool IsSettingsOpen { get; set; } = false;

    // Установлен английский язык по умолчанию
    public static string CurrentLanguage { get; set; } = "EN";

    public struct ChatMessage
    {
        public string Author { get; set; }
        public string Text { get; set; }
    }

    public List<ChatMessage> CanvasMessages { get; set; } = new();
    public bool IsChatOpen { get; set; } = false;
    private TextEntry ChatInput { get; set; }

    public struct PlayerInfo
    {
        public string Name { get; set; }
        public int Score { get; set; }
        public bool IsLocal { get; set; }
    }

    private string L( string ru, string en )
    {
        return CurrentLanguage == "RU" ? ru : en;
    }

    private bool IsReady => PushAbility?.IsReady ?? false;

    protected override void OnEnabled()
    {
        base.OnEnabled();
        
        AddMessage( L( "Система", "System" ), L( "Чат готов. Нажмите Enter для ввода.", "Chat ready. Press Enter to type." ) );
        ApplyMouseState();
    }

    protected override void OnUpdate()
    {
        base.OnUpdate();

        if ( PushAbility == null )
        {
            PushAbility = Scene.GetAllComponents<PushAbility>()
                .FirstOrDefault( x => !x.IsProxy );
        }

        if ( Input.EscapePressed || Input.Pressed( "menu" ) )
        {
            Input.EscapePressed = false;
            ToggleMenu();
        }

        if ( Input.Pressed( "chat" ) || Input.Pressed( "enter" ) )
        {
            if ( !IsMenuOpen && !IsSettingsOpen )
            {
                if ( !IsChatOpen ) OpenChat();
            }
        }

        ApplyMouseState();
    }

    private void SetLanguage( string lang )
    {
        CurrentLanguage = lang;
        StateHasChanged();
    }

    private void ApplyMouseState()
    {
        bool needsMouse = IsMenuOpen || IsSettingsOpen || IsChatOpen;
        Mouse.Visibility = needsMouse ? MouseVisibility.Visible : MouseVisibility.Hidden;

        if ( !needsMouse && Panel != null )
        {
            Panel.Focus();
        }
    }

    private void ToggleMenu()
    {
        if ( IsSettingsOpen ) CloseSettings();
        else if ( IsMenuOpen ) StartGame();
        else OpenMenu();
    }

    private void StartGame()
    {
        IsMenuOpen = false;
        IsSettingsOpen = false;
        ApplyMouseState();
    }

    private void OpenMenu()
    {
        IsMenuOpen = true;
        IsSettingsOpen = false;
        ApplyMouseState();
    }

    private void OpenSettings()
    {
        IsMenuOpen = false;
        IsSettingsOpen = true;
        ApplyMouseState();
    }

    private void CloseSettings()
    {
        IsSettingsOpen = false;
        IsMenuOpen = true;
        ApplyMouseState();
    }

    private void QuitGame()
    {
        Game.Close();
    }

    private int GetScore()
    {
        return ScoreManager.Instance?.Score ?? 0;
    }

    private float GetPercent()
    {
        if ( PushAbility == null ) return 0f;
        return MathX.Clamp( PushAbility.CooldownProgress * 100f, 0f, 100f );
    }

    private void ToggleBots()
    {
        BotSpawner.EnableBots = !BotSpawner.EnableBots;
        StateHasChanged();
    }

    private int GetHighScore()
    {
        return SaveManager.Current?.HighScore ?? 0;
    }

    private void OpenChat()
    {
        IsChatOpen = true;
        ApplyMouseState();
        StateHasChanged();
        ChatInput?.Focus();
    }

    private void SendChatMessage()
    {
        if ( ChatInput == null || string.IsNullOrWhiteSpace( ChatInput.Text ) )
        {
            IsChatOpen = false;
            ApplyMouseState();
            return;
        }

        string name = Connection.Local?.DisplayName ?? L( "Вы", "You" );
        AddMessage( name, ChatInput.Text );

        ChatInput.Text = "";
        IsChatOpen = false;
        ApplyMouseState();
    }

    public void AddMessage( string author, string text )
    {
        CanvasMessages.Add( new ChatMessage { Author = author, Text = text } );
        if ( CanvasMessages.Count > 6 )
        {
            CanvasMessages.RemoveAt( 0 );
        }
        StateHasChanged();
    }

    private IEnumerable<PlayerInfo> GetPlayerList()
    {
        if ( Connection.All != null && Connection.All.Any() )
        {
            foreach ( var conn in Connection.All )
            {
                bool isLocal = conn == Connection.Local;
                int score = isLocal ? GetScore() : 0;

                yield return new PlayerInfo
                {
                    Name = string.IsNullOrEmpty( conn.DisplayName ) ? "Player" : conn.DisplayName,
                    Score = score,
                    IsLocal = isLocal
                };
            }
        }
        else
        {
            yield return new PlayerInfo
            {
                Name = L( "Вы", "You" ),
                Score = GetScore(),
                IsLocal = true
            };
        }
    }

    private int GetDeaths()
    {
        return ScoreManager.Instance?.Deaths ?? 0;
    }

    public static bool EnableMusic { get; set; } = true;

    private void ToggleMusic()
    {
        EnableMusic = !EnableMusic;
        MusicManager.Instance?.ToggleMusic( EnableMusic );
        StateHasChanged();
    }

    protected override int BuildHash()
    {
        var hash = new HashCode();
        hash.Add( GetPercent() );
        hash.Add( IsReady );
        hash.Add( EnableMusic );
        hash.Add( GetScore() );
        hash.Add( GetDeaths() ); 
        hash.Add( IsMenuOpen );
        hash.Add( ShopManager.Instance?.SelectedItem?.Id );
        hash.Add( IsSettingsOpen );
        hash.Add( CurrentLanguage );
        hash.Add( IsChatOpen );
        hash.Add( CanvasMessages.Count );
        hash.Add( Connection.All?.Count() ?? 0 );
        return hash.ToHashCode();
    }
}