using Godot;

namespace Babushka.scripts.CSharp.Common.Savegame;

/// <summary>
/// Tracks important window settings and communicates with the <see cref="SettingsSaveController"/> to save/load them.
/// </summary>
public partial class WindowSettingsSync : Node
{
    private Window window;
    
    public override void _Ready()
    {
        window = GetWindow();
        window.SizeChanged += SaveWindowSize;
        
        SyncSettings();
        SettingsSaveController.Instance.OnSettingsReloaded += SyncSettings;
    }


    public override void _ExitTree()
    {
        SaveWindowPosition();
        SaveWindowBorderless();
        SaveWindowSize();
        SettingsSaveController.Instance.SaveSettings();
    }
    
    /// <summary>
    /// Tries to get previous settings from settings-savefile, if available.
    /// </summary>
    public void SyncSettings()
    {
        if (!SettingsSaveController.Instance.LoadedData)
        {
            SaveWindowPosition();
            SaveWindowSize();
            SaveWindowBorderless();
            return; 
        }
        
        SettingsData? settingsData =  SettingsSaveController.Instance.settings;
        if (settingsData != null)
        {
            window.Position = new Vector2I(settingsData.windowPositionX, settingsData.windowPositionY);
            ValidateWindowPosition();
            
            window.Size = new Vector2I(settingsData.windowSizeX, settingsData.windowSizeY);
            window.Borderless = settingsData.windowBorderless;
        }
    }

    private void ValidateWindowPosition()
    {
        bool validWindowPosition = false;
        foreach (Rect2I displayRect in DisplayServer.GetDisplayCutouts())
        {
            if (displayRect.HasPoint(window.Position))
            {
                validWindowPosition = true;
                break;
            }
        }
            
        if (!validWindowPosition)
        {
            window.MoveToCenter();
            SaveWindowPosition();
        }
    }
    
    private void SaveWindowPosition()
    {
        SettingsData? settingsData = SettingsSaveController.Instance.settings;

        if (settingsData != null)
        {
            settingsData.windowPositionX = window.Position.X;
            settingsData.windowPositionY = window.Position.Y;
        }
    }

    private void SaveWindowSize()
    {
        SettingsData? settingsData = SettingsSaveController.Instance.settings;
        if (settingsData != null)
        {
            settingsData.windowSizeX = window.Size.X;
            settingsData.windowSizeY = window.Size.Y;
        }
    }

    private void SaveWindowBorderless()
    {
        SettingsData? settingsData = SettingsSaveController.Instance.settings;
        if (settingsData != null)
            settingsData.windowBorderless = window.Borderless;
    }

}