Bachelor-Arbeit-Luca-Haas/Assets/Convai/Scripts/Runtime/UI/SettingsPanel/UISettingsPanel.cs

using Convai.Scripts.Utils;
using UnityEngine;
using UnityEngine.UI;

/// <summary>
///     The UISettingsPanel class manages the settings panel UI, including animations and user interactions.
/// </summary>
public class UISettingsPanel : MonoBehaviour
{
    [Header("References")] [SerializeField]
    private Button _saveChangesButton;

    [SerializeField] private Button _settingsPanelExitButton;
    [SerializeField] private CanvasGroup _panelCanvasGroup;

    /// <summary>
    ///     Animation durations for fade in, fade out, and gap between animations
    /// </summary>
    [Header("Settings Panel Animation Values")] [SerializeField] [Tooltip("Duration for fade in animation")]
    private float _fadeInDuration = 0.35f;

    [SerializeField] [Tooltip("Duration for fade out animation")]
    private float _fadeOutDuration = 0.35f;

    private FadeCanvas _fadeCanvas;

    /// <summary>
    ///     References to other scripts and components
    /// </summary>
    private UIAppearanceSettings _uiAppearanceSettings;

    /// <summary>
    ///     Initialize references to other scripts and components and populate the dropdown with available microphone devices.
    /// </summary>
    private void Awake()
    {
        // Initialize references to other scripts and components
        _fadeCanvas = GetComponent<FadeCanvas>();
        _uiAppearanceSettings = GetComponent<UIAppearanceSettings>();

        // Attach event listeners to UI buttons
        _saveChangesButton.onClick.AddListener(SaveChanges);
        _settingsPanelExitButton.onClick.AddListener(delegate { ToggleSettingsPanel(false); });
    }

    /// <summary>
    ///     Update is called once per frame
    /// </summary>
    private void Update()
    {
        // Toggle settings panel when the Escape key is pressed
        if (ConvaiInputManager.Instance.WasSettingsKeyPressed())
        {
            if (_panelCanvasGroup.alpha == 0)
            {
                ToggleSettingsPanel(true);
                Cursor.lockState = CursorLockMode.None;
                Cursor.visible = true;
            }
            else
            {
                ToggleSettingsPanel(false);
                Cursor.lockState = CursorLockMode.Locked;
                Cursor.visible = false;
            }
        }
    }

    /// <summary>
    ///     Toggle the settings panel on or off
    /// </summary>
    public void ToggleSettingsPanel(bool value)
    {
        if (value)
        {
            // Fade in the settings panel
            ActivatePanel();
            FadeInSettingsPanel();

            // Check if the alpha of the appearance canvas is at its maximum
            const float MAX_ALPHA = 1;
            if (_uiAppearanceSettings.GetCurrentActiveAppearance().GetCanvasGroup().alpha >= MAX_ALPHA)
                // If true, fade out the current appearance canvas
                _uiAppearanceSettings.FadeOutCurrentAppearance();

            // Set the cursor lock state to none
            Cursor.lockState = CursorLockMode.None;
        }
        else
        {
            // Fade out the settings panel
            _fadeCanvas.OnCurrentFadeCompleted += DeactivatePanel;
            FadeOutSettingsPanel();

            // Check if there is an active Convai NPC
            if (ConvaiNPCManager.Instance.GetActiveConvaiNPC() != null)
                // If true, fade in the current appearance canvas
                _uiAppearanceSettings.FadeInCurrentAppearance();

            // Set the cursor lock state to locked
            Cursor.lockState = CursorLockMode.Locked;

            // Save values when the settings panel is closed
            UISaveLoadSystem.Instance.SaveValues();
        }
    }

    /// <summary>
    ///     Save changes and close the settings panel
    /// </summary>
    private void SaveChanges()
    {
        UISaveLoadSystem.Instance.SaveValues();
        ToggleSettingsPanel(false);
    }

    /// <summary>
    ///     Trigger fade in animation for the settings panel
    /// </summary>
    private void FadeInSettingsPanel()
    {
        _fadeCanvas.StartFadeIn(_panelCanvasGroup, _fadeInDuration);
    }

    /// <summary>
    ///     Trigger fade out animation for the settings panel
    /// </summary>
    private void FadeOutSettingsPanel()
    {
        _fadeCanvas.StartFadeOut(_panelCanvasGroup, _fadeOutDuration);
    }

    /// <summary>
    ///     Trigger fade out and fade in animation with a gap in between
    /// </summary>
    public void FadeOutFadeinWithGap(float fadeInDuration, float fadeOutDuration, float previewDuration)
    {
        _fadeCanvas.StartFadeOutFadeInWithGap(_panelCanvasGroup, fadeInDuration, fadeOutDuration, previewDuration);
    }

    private void DeactivatePanel()
    {
        _panelCanvasGroup.gameObject.SetActive(false);
        _fadeCanvas.OnCurrentFadeCompleted -= DeactivatePanel;
    }

    private void ActivatePanel() => _panelCanvasGroup.gameObject.SetActive(true);
}