using System;
using System.Diagnostics;
using Godot;

public partial class UIHandler
{
	public void DisplayStats()
	{
		FPS.Text = Engine.GetFramesPerSecond().ToString() + " FPS";
		RAM.Text = GetMemoryDisplay();
		DisplaySurvivalStats();
		DisplayWorldStats();
		DisplayLoseCondition();
	}

	private string GetMemoryDisplay()
	{
		double memory = Process.GetCurrentProcess().WorkingSet64 / (1024 * 1024);
		if (memory > 1024)
		{
			return Math.Round(memory / 1024, 2).ToString() + " GB";
		}

		return memory.ToString() + " MB";
	}

	private void DisplayRobotAlarm()
	{
		string messages = "";
		if (GameData.survival.isDead)
		{
			messages += GameData.survival.currentStatus + "\r";
		}

		foreach (Robot robot in GameData.robots)
		{
			if (robot.currentMessage.Length > 0)
			{
				messages += $"{robot.Name}: {robot.currentMessage}\r";
			}
		}
		robotAlarm.Visible = messages.Length > 0;
		robotAlarm.TooltipText = messages;
	}

	private void DisplaySurvivalStats()
	{
		energyLabel.Text = $"Energy: {GameData.survival.energy:0}/{GameData.survival.maxEnergy:0}";
		waterLabel.Text = $"Water: {GameData.survival.thirst:0}/{GameData.survival.maxThirst:0}";
		hungerLabel.Text = $"Food: {GameData.survival.hunger:0}/{GameData.survival.maxHunger:0}";
		survivalStatus.Text = GameData.survival.currentStatus;
		survivalStatus.Modulate = GameData.survival.currentStatus.Contains("critical")
			? UIStyle.GetWarningColor()
			: Colors.White;

		if (GameData.survival.isDead)
		{
			ShowGameOver();
		}
	}

	private void DisplayWorldStats()
	{
		currentLayer.Text = $"Layer: {GameData.currentLayer + 1}/{GameData.ruinSize}";
		deepestLayer.Text = $"Gate depth: {GameData.lowestLayer}";
		if (GameData.lowestLayer == GameData.ruinSize)
		{
			unlockLayer.Visible = false;
			return;
		}
		unlockLayer.TooltipText = "Gate requirements:\r" + GameData.map[GameData.lowestLayer].DisplayGateIngredients();
		unlockLayer.Disabled = !GameData.inventory.CanCraft(GameData.map[GameData.lowestLayer].gateIngredients, 1);
	}

	private void DisplayLoseCondition()
	{
		if (!GameData.HasNoRobotRecovery()) return;

		ShowGameOver("No robots remain and no robot can be spawned from inventory.");
	}

	public void ShowGameOver()
	{
		ShowGameOver($"You died!\rReason: {GameData.survival.deathReason}\rBetter luck next time.");
	}

	public void ShowGameOver(string message)
	{
		if (gameOver.Visible) return;
		gameOver.GetNode<RichTextLabel>("./VBoxContainer/Content").Text = $"[font_size=32]{message}\r";
		gameOver.Show();
	}

	public void HideGameOver()
	{
		gameOver.Hide();
	}
}