using Godot;
using System.Collections.Generic;

namespace TheGame
{
    public partial class SettingsMenu : Control
    {
        // UI References
        private Label _titleLabel;
        private TabContainer _tabContainer;
        
        // General Tab
        private Label _languageLabel;
        private OptionButton _languageOption;
        
        // Video Tab
        private Label _fullscreenLabel;
        private CheckBox _fullscreenCheck;
        
        // Audio Tab
        private Label _masterLabel;
        private HSlider _masterSlider;
        private Label _backgroundLabel;
        private HSlider _backgroundSlider;
        private Label _effectsLabel;
        private HSlider _effectsSlider;
        private Label _radioLabel;
        private HSlider _radioSlider;
        
        // Buttons
        private Button _applyButton;
        private Button _cancelButton;
        private Button _backButton;
        
        // Settings
        private GameSettings _settings;
        private GameSettings _originalSettings;
        
        public override void _Ready()
        {
            // Lägg till i localized_ui gruppen för språkuppdateringar
            AddToGroup("localized_ui");
            
            // Sätt process mode baserat på om spelet är pausat eller inte
            if (GetTree().Paused)
            {
                ProcessMode = ProcessModeEnum.WhenPaused;
            }
            else
            {
                ProcessMode = ProcessModeEnum.Always;
            }
            
            // Hämta UI referenser
            GetUIReferences();
            
            // Ladda nuvarande inställningar
            _settings = GameSettings.Instance;
            _originalSettings = new GameSettings
            {
                Fullscreen = _settings.Fullscreen,
                MasterVolume = _settings.MasterVolume,
                BackgroundVolume = _settings.BackgroundVolume,
                EffectsVolume = _settings.EffectsVolume,
                RadioVolume = _settings.RadioVolume,
                Language = _settings.Language
            };
            
            // Sätt process mode på alla UI element så de fungerar när pausat
            SetProcessModeRecursive(this, ProcessModeEnum.WhenPaused);
            
            // Initiera UI
            InitializeLanguageOptions();
            LoadCurrentSettings();
            UpdateLocalization();
        }
        
        public override void _Notification(int what)
        {
            if (what == NotificationWMCloseRequest)
            {
                // Settings menyn är en popup, så vi stänger bara den själv
                _on_cancel_button_pressed();
            }
        }
        
        private void SetProcessModeRecursive(Node node, ProcessModeEnum mode)
        {
            if (node is Control control)
            {
                control.ProcessMode = mode;
            }
            
            foreach (Node child in node.GetChildren())
            {
                SetProcessModeRecursive(child, mode);
            }
        }
        
        private void GetUIReferences()
        {
            _titleLabel = GetNode<Label>("MainContainer/TitleLabel");
            _tabContainer = GetNode<TabContainer>("MainContainer/TabContainer");
            
            // General
            _languageLabel = GetNode<Label>("MainContainer/TabContainer/General/GeneralVBox/LanguageContainer/LanguageLabel");
            _languageOption = GetNode<OptionButton>("MainContainer/TabContainer/General/GeneralVBox/LanguageContainer/LanguageOption");
            
            // Video
            _fullscreenLabel = GetNode<Label>("MainContainer/TabContainer/Video/VideoVBox/FullscreenContainer/FullscreenLabel");
            _fullscreenCheck = GetNode<CheckBox>("MainContainer/TabContainer/Video/VideoVBox/FullscreenContainer/FullscreenCheck");
            
            // Audio
            _masterLabel = GetNode<Label>("MainContainer/TabContainer/Audio/AudioVBox/MasterContainer/MasterLabel");
            _masterSlider = GetNode<HSlider>("MainContainer/TabContainer/Audio/AudioVBox/MasterContainer/MasterSlider");
            _backgroundLabel = GetNode<Label>("MainContainer/TabContainer/Audio/AudioVBox/BackgroundContainer/BackgroundLabel");
            _backgroundSlider = GetNode<HSlider>("MainContainer/TabContainer/Audio/AudioVBox/BackgroundContainer/BackgroundSlider");
            _effectsLabel = GetNode<Label>("MainContainer/TabContainer/Audio/AudioVBox/EffectsContainer/EffectsLabel");
            _effectsSlider = GetNode<HSlider>("MainContainer/TabContainer/Audio/AudioVBox/EffectsContainer/EffectsSlider");
            _radioLabel = GetNode<Label>("MainContainer/TabContainer/Audio/AudioVBox/RadioContainer/RadioLabel");
            _radioSlider = GetNode<HSlider>("MainContainer/TabContainer/Audio/AudioVBox/RadioContainer/RadioSlider");
            
            // Buttons
            _applyButton = GetNode<Button>("MainContainer/ButtonContainer/ApplyButton");
            _cancelButton = GetNode<Button>("MainContainer/ButtonContainer/CancelButton");
            _backButton = GetNode<Button>("MainContainer/ButtonContainer/BackButton");
        }
        
        private void InitializeLanguageOptions()
        {
            _languageOption.Clear();
            
            var availableLanguages = LocalizationManager.Instance.GetAvailableLanguages();
            var languageNames = new Dictionary<string, string>
            {
                {"eng", "English"},
                {"sve", "Svenska"}
            };
            
            foreach (string lang in availableLanguages)
            {
                string displayName = languageNames.ContainsKey(lang) ? languageNames[lang] : lang.ToUpper();
                _languageOption.AddItem(displayName);
                _languageOption.SetItemMetadata(_languageOption.GetItemCount() - 1, lang);
            }
        }
        
        private void LoadCurrentSettings()
        {
            // Language
            for (int i = 0; i < _languageOption.GetItemCount(); i++)
            {
                if (_languageOption.GetItemMetadata(i).AsString() == _settings.Language)
                {
                    _languageOption.Selected = i;
                    break;
                }
            }
            
            // Video
            _fullscreenCheck.ButtonPressed = _settings.Fullscreen;
            
            // Audio
            _masterSlider.Value = _settings.MasterVolume;
            _backgroundSlider.Value = _settings.BackgroundVolume;
            _effectsSlider.Value = _settings.EffectsVolume;
            _radioSlider.Value = _settings.RadioVolume;
            
            UpdateVolumeLabels();
        }
        
        private void UpdateVolumeLabels()
        {
            var loc = LocalizationManager.Instance;
            _masterLabel.Text = $"{loc.GetText("settings_master_volume")}: {(int)_masterSlider.Value}";
            _backgroundLabel.Text = $"{loc.GetText("settings_background_volume")}: {(int)_backgroundSlider.Value}";
            _effectsLabel.Text = $"{loc.GetText("settings_effects_volume")}: {(int)_effectsSlider.Value}";
            _radioLabel.Text = $"{loc.GetText("settings_radio_volume")}: {(int)_radioSlider.Value}";
        }
        
        public void UpdateLocalization()
        {
            var loc = LocalizationManager.Instance;
            
            _titleLabel.Text = loc.GetText("settings_title");
            
            // Tab names
            _tabContainer.SetTabTitle(0, loc.GetText("settings_general"));
            _tabContainer.SetTabTitle(1, loc.GetText("settings_video"));
            _tabContainer.SetTabTitle(2, loc.GetText("settings_audio"));
            
            // General
            _languageLabel.Text = loc.GetText("settings_language") + ":";
            
            // Video
            _fullscreenLabel.Text = loc.GetText("settings_fullscreen") + ":";
            
            // Audio
            UpdateVolumeLabels();
            
            // Buttons
            _applyButton.Text = loc.GetText("settings_apply");
            _cancelButton.Text = loc.GetText("settings_cancel");
            _backButton.Text = loc.GetText("settings_back");
        }
        
        // Signal handlers
        private void _on_language_option_item_selected(int index)
        {
            string selectedLanguage = _languageOption.GetItemMetadata(index).AsString();
            _settings.Language = selectedLanguage;
            
            // Tillämpa språkändring direkt
            LocalizationManager.Instance.SetLanguage(selectedLanguage);
        }
        
        private void _on_fullscreen_check_toggled(bool buttonPressed)
        {
            _settings.Fullscreen = buttonPressed;
        }
        
        private void _on_master_slider_value_changed(double value)
        {
            _settings.MasterVolume = (int)value;
            UpdateVolumeLabels();
        }
        
        private void _on_background_slider_value_changed(double value)
        {
            _settings.BackgroundVolume = (int)value;
            UpdateVolumeLabels();
        }
        
        private void _on_effects_slider_value_changed(double value)
        {
            _settings.EffectsVolume = (int)value;
            UpdateVolumeLabels();
        }
        
        private void _on_radio_slider_value_changed(double value)
        {
            _settings.RadioVolume = (int)value;
            UpdateVolumeLabels();
        }
        
        private void _on_apply_button_pressed()
        {
            _settings.ApplyAllSettings();
            GoBack();
        }
        
        private void _on_cancel_button_pressed()
        {
            // Återställ inställningar
            _settings.Fullscreen = _originalSettings.Fullscreen;
            _settings.MasterVolume = _originalSettings.MasterVolume;
            _settings.BackgroundVolume = _originalSettings.BackgroundVolume;
            _settings.EffectsVolume = _originalSettings.EffectsVolume;
            _settings.RadioVolume = _originalSettings.RadioVolume;
            _settings.Language = _originalSettings.Language;
            
            // Återställ språk
            LocalizationManager.Instance.SetLanguage(_originalSettings.Language);
            
            GoBack();
        }
        
        private void _on_back_button_pressed()
        {
            _on_apply_button_pressed(); // Spara ändringar när man går tillbaka
        }
        
        private void GoBack()
        {
            // Kontrollera varifrån vi kom
            if (GetTree().Paused)
            {
                // Vi kom från pausmenyn - ta bara bort settings window
                QueueFree();
            }
            else
            {
                // Vi kom från huvudmenyn
                GetTree().ChangeSceneToFile("res://scenes/MainMenu.tscn");
            }
        }
    }
}