using Godot;
using Mr.BrickAdventures;
using Mr.BrickAdventures.Autoloads;
using Mr.BrickAdventures.scripts.components;

namespace Mr.BrickAdventures.scripts.UI;

public partial class Hud : Control
{
    [Export] public HealthComponent Health { get; set; }
    [Export] public Label CoinsLabel { get; set; }
    [Export] public ProgressBar HealthBar { get; set; }
    [Export] public Label LivesLabel { get; set; }

    public override void _Ready()
    {
        if (EventBus.Instance != null)
        {
            EventBus.Instance.CoinsChanged += OnCoinsChanged;
            EventBus.Instance.LivesChanged += OnLivesChanged;
        }

        var progression = ProgressionRoot.Instance;
        SetCoinsLabel(progression?.TotalCoins.Value ?? 0);
        SetLivesLabel(progression?.Lives.Value ?? 0);
    }

    public override void _ExitTree()
    {
        if (EventBus.Instance != null)
        {
            EventBus.Instance.CoinsChanged -= OnCoinsChanged;
            EventBus.Instance.LivesChanged -= OnLivesChanged;
        }
    }

    // Health belongs to the component on the player, not to progression, so it stays a direct read.
    public override void _Process(double delta)
    {
        SetHealthBar();
    }

    private void OnLivesChanged(int lives) => SetLivesLabel(lives);

    private void OnCoinsChanged(int totalCoins) => SetCoinsLabel(totalCoins);

    private void SetCoinsLabel(int totalCoins)
    {
        CoinsLabel.Text = Tr("COINS_LABEL") + ": " + totalCoins;
    }

    private void SetLivesLabel(int lives)
    {
        LivesLabel.Text = Tr("LIVES_LABEL") + ": " + lives;
    }

    private void SetHealthBar()
    {
        HealthBar.Value = Health.Health;
        HealthBar.MaxValue = Health.MaxHealth;
    }
}