using System;
using System.Collections.Generic;
using System.Text;
using Godot;

namespace Carotrauma.scripts.libs.input;

public partial class InputContext : Node {

    public override void _Ready() {
        LoadContext();
    }

    public override void _ExitTree() {
        UnloadContext();
        base._ExitTree();
    }

    private List<InputAction> _actions;

    private double cooldown = 1;
    public override void _Process(double delta) {
        cooldown -= delta;
        if (cooldown > 0) return;

        cooldown = 5;
        GD.Print(ToString());
    }

    public void LoadContext() {
        var provider = GetParentOrNull<Node3D>();
        if (provider is not IInputProvider inputProvider) return;
        _actions = inputProvider.Actions;
        _actions.ForEach(LoadAction);
    }

    public void UnloadContext() {
        _actions?.ForEach(UnloadAction);
    }

    private void LoadAction(InputAction action) {
        GD.Print("Add action: " + action.Name);
        InputMap.AddAction(action.Name);
        GD.Print("Add event to action: " + action.Name);
        InputMap.ActionAddEvent(action.Name, action.Event);
    }

    private void UnloadAction(InputAction action) {
        InputMap.ActionEraseEvent(action.Name, action.Event);
        InputMap.EraseAction(action.Name);
    }

    public override string ToString() {
        if (_actions == null) return "No Actions";
        StringBuilder sb = new();
        sb.AppendLine("Input Context:");
        foreach (InputAction action in _actions) {
            sb.Append("  - ").AppendLine(action.Name);
            foreach (var inputEvent in InputMap.ActionGetEvents(action.Name))
                sb.Append("    - ").AppendLine(inputEvent.AsText());
        }
        return sb.ToString();
    }

}