using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class UIControl : MonoBehaviour {

	public Text score, high, messageText, failedMessageText, speed, gapSize, wallWidth;

	public bool resetting = false;

	public static UIControl Instance;

	private int currentScore, currentHigh;

	void Start() {
		Instance = this;
		currentHigh = Manager.playerStatistics.highScore;
		ResetScore();
	}

	void Update() {
		RunningTrack track = RunningTrack.Instance;
		speed.text = string.Format("{0:N1}m/s", track.WallSpeed);
		gapSize.text = string.Format("{0:N1}m", track.WallSpawnDistance);
		wallWidth.text = string.Format("{0:N1}m", track.MaxWallWidth);
	}

	public void AddScore(int value) {
		if (resetting)
			return;

		currentScore += value;
		if (currentScore > currentHigh) {
			currentHigh = currentScore;
			Manager.playerStatistics.highScore = currentHigh;
			Manager.Save(Manager.playerStatistics);
		}

		score.text = currentScore.ToString();
		high.text = currentHigh.ToString();
	}

	public void ResetScore() {
		currentScore = 0;
		AddScore(0);
	}

	public void NewMessage(string message) {
		messageText.text = message;
		StartCoroutine(FadeMessage(messageText, 0.02f));
	}

	public void FailedMessage() {
		StartCoroutine(FadeMessage(failedMessageText, 0.1f));
	}

	IEnumerator FadeMessage(Text text, float fadeSpeed) {
		Color old = text.color;
		float r = old.r, g = old.g, b = old.b;

		for (float a = 0; a <= 1; a += fadeSpeed) {
			text.color = new Color(r, g, b, a);
			yield return null;
		}

		text.color = new Color(r, g, b, 1);

		yield return new WaitForSeconds(1f);

		for (float a = 1; a >= 0; a -= fadeSpeed) {
			text.color = new Color(r, g, b, a);
			yield return null;
		}

		text.color = new Color(r, g, b, 0);
	}
}