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


public class DialogueManager : MonoBehaviour {

    public Text nameText;
    public Text dialogueText;

    public CharacterController player;

    public Animator animator;

    private Queue<string> sentences;

	// Use this for initialization
	void Start () {

        sentences = new Queue<string>();
		
	}
	
	
	// Update is called once per frame
	void Update () {
	
	}

    public void StartDialogue(Dialogue dialogue)
    {

        animator.SetBool("IsOpen", true);

        nameText.text = dialogue.name;

        sentences.Clear();

        foreach(string sentence in dialogue.sentences)
        {
            sentences.Enqueue(sentence);
        }

        DisplayNextSentence();
    }

    public void DisplayNextSentence()
    {
        if(sentences.Count == 0)
        {
            EndDialogue();
        }

        string sentence = sentences.Dequeue();
        StopAllCoroutines();
        StartCoroutine(TypeSentence(sentence));
    }

    //Used without update Method 
    //Yield return null -> says continue if not finished with foreach (while loop) 
    IEnumerator TypeSentence (string sentence)
    {
        dialogueText.text = "";
        foreach(char letter in sentence.ToCharArray())
        {
            dialogueText.text += letter;
            yield return null;
        }
    }

    void EndDialogue()
    {
        animator.SetBool("IsOpen", false);
        player.freeze = false;
    }
}