using Godot;
using System;

namespace Chessistics.Scripts.UI;

public partial class LevelSelectScreen : Control
{
    [Signal]
    public delegate void LevelSelectedEventHandler(int levelIndex);

    private readonly (string name, string desc)[] _levels =
    [
        ("Premier Convoi", "Acheminez du bois de la scierie au depot."),
        ("Deux Clients", "Fournissez deux destinations depuis une seule scierie."),
        ("Le Col", "Franchissez le mur et gerez deux types de cargaison.")
    ];

    public override void _Ready()
    {
        var panel = new PanelContainer();
        panel.SetAnchorsPreset(LayoutPreset.FullRect);

        var margin = new MarginContainer();
        margin.AddThemeConstantOverride("margin_left", 60);
        margin.AddThemeConstantOverride("margin_right", 60);
        margin.AddThemeConstantOverride("margin_top", 60);
        margin.AddThemeConstantOverride("margin_bottom", 60);

        var vbox = new VBoxContainer();

        var title = new Label
        {
            Text = "CHESSISTICS",
            HorizontalAlignment = HorizontalAlignment.Center
        };
        title.AddThemeFontSizeOverride("font_size", 32);
        title.AddThemeColorOverride("font_color", new Color("#FFD700"));
        vbox.AddChild(title);

        var subtitle = new Label
        {
            Text = "Prototype — Selectionnez un niveau",
            HorizontalAlignment = HorizontalAlignment.Center
        };
        subtitle.AddThemeFontSizeOverride("font_size", 14);
        subtitle.AddThemeColorOverride("font_color", new Color("#AAAAAA"));
        vbox.AddChild(subtitle);

        vbox.AddChild(new HSeparator());

        var grid = new HBoxContainer();
        grid.Alignment = BoxContainer.AlignmentMode.Center;

        for (int i = 0; i < _levels.Length; i++)
        {
            var (name, desc) = _levels[i];
            var card = CreateLevelCard(i, name, desc);
            grid.AddChild(card);
        }

        vbox.AddChild(grid);
        margin.AddChild(vbox);
        panel.AddChild(margin);
        AddChild(panel);
    }

    private Control CreateLevelCard(int index, string name, string description)
    {
        var card = new PanelContainer
        {
            CustomMinimumSize = new Vector2(220, 160)
        };

        var vbox = new VBoxContainer();

        var numLabel = new Label
        {
            Text = $"Niveau {index + 1}",
            HorizontalAlignment = HorizontalAlignment.Center
        };
        numLabel.AddThemeFontSizeOverride("font_size", 12);
        numLabel.AddThemeColorOverride("font_color", new Color("#AAAAAA"));
        vbox.AddChild(numLabel);

        var nameLabel = new Label
        {
            Text = name,
            HorizontalAlignment = HorizontalAlignment.Center
        };
        nameLabel.AddThemeFontSizeOverride("font_size", 18);
        vbox.AddChild(nameLabel);

        var descLabel = new Label
        {
            Text = description,
            HorizontalAlignment = HorizontalAlignment.Center,
            AutowrapMode = TextServer.AutowrapMode.Word
        };
        descLabel.AddThemeFontSizeOverride("font_size", 11);
        descLabel.AddThemeColorOverride("font_color", new Color("#CCCCCC"));
        vbox.AddChild(descLabel);

        var playBtn = new Button
        {
            Text = "Jouer",
            CustomMinimumSize = new Vector2(100, 32)
        };
        var idx = index;
        playBtn.Pressed += () => EmitSignal(SignalName.LevelSelected, idx);
        vbox.AddChild(playBtn);

        card.AddChild(vbox);
        return card;
    }
}