#nullable enable

using Godot;
using SideScrollerGame.Debug.Commands;

namespace SideScrollerGame.Debug;

public partial class DebugPanelController : PanelContainer
{
    public override void _Ready()
    {
        ProcessMode = ProcessModeEnum.Always;
        EnsureLayout();
        TryBindFromRoot();
    }

    public void Bind(DebugCommandNode commandNode)
    {
        m_CommandNode = commandNode;
    }

    private void EnsureLayout()
    {
        if (m_Container is not null)
        {
            return;
        }

        m_Container = new VBoxContainer { Name = "Controls" };
        AddChild(m_Container);

        AddHeader("Time");
        AddButton("Pause", DebugCommandId.TogglePause);
        AddButton("Step", DebugCommandId.FrameStep);
        AddButton("0.25x", DebugCommandId.SetTimeScale, "0.25");
        AddButton("0.5x", DebugCommandId.SetTimeScale, "0.5");
        AddButton("1x", DebugCommandId.SetTimeScale, "1");
        AddButton("2x", DebugCommandId.SetTimeScale, "2");
        AddButton("4x", DebugCommandId.SetTimeScale, "4");

        AddHeader("Content");
        AddButton("Easy", DebugCommandId.SetDifficulty, "difficulty.easy");
        AddButton("Normal", DebugCommandId.SetDifficulty, "difficulty.normal");
        AddButton("Hard", DebugCommandId.SetDifficulty, "difficulty.hard");
        AddButton("Spawn serial", DebugCommandId.SpawnActor, "enemy.serial");
        AddButton("Spawn parallel", DebugCommandId.SpawnActor, "enemy.parallel");
        AddButton("Intro", DebugCommandId.JumpToMarker, "intro");
        AddButton("Opening", DebugCommandId.JumpToMarker, "cluster.opening");

        AddHeader("Flags");
        AddButton("Invulnerable", DebugCommandId.ToggleInvulnerability);
        AddButton("Infinite ammo", DebugCommandId.ToggleInfiniteSpecialAmmo);
        AddButton("No enemy fire", DebugCommandId.ToggleNoEnemyFire);
        AddButton("Collisions", DebugCommandId.ToggleCollisionShapes);
        AddButton("Bounds", DebugCommandId.ToggleGameplayBounds);

        AddHeader("Scene");
        AddButton("Restart", DebugCommandId.RestartMission);
        AddButton("Reload", DebugCommandId.ReloadScene);
    }

    private void TryBindFromRoot()
    {
        m_CommandNode ??= GetNodeOrNull<DebugCommandNode>("/root/GameRoot/DebugCommandNode");
    }

    private void AddHeader(string text)
    {
        Label label = new() { Text = text };
        m_Container?.AddChild(label);
    }

    private void AddButton(string text, DebugCommandId commandId, string? argument = null)
    {
        Button button = new() { Text = text };
        button.Pressed += () => Execute(commandId, argument);
        m_Container?.AddChild(button);
    }

    private void Execute(DebugCommandId commandId, string? argument = null)
    {
        TryBindFromRoot();
        m_CommandNode?.Execute(commandId, argument);
    }

    private DebugCommandNode? m_CommandNode;
    private VBoxContainer? m_Container;
}