using UnityEngine;
using System.Collections;
using System.Collections.Generic; //input for lists
using UnityEngine.UI;

public class playerController : MonoBehaviour {

	public string HorizontalBtn; //holds string for horizontal input
	public string VerticalBtn; //holds string for Vertical input
	public string StrongAttackBtn;
	public string DashAttackBtn;
	
	public Animator animator; //Holds animator for Pinata
	public GameObject heart; //Health sprites
	public GameObject newConfetti; //confetti when hit
	public GameObject newCandy;
	public stickController stick; //controller for stick
	public GUIText scoreDisplay;
	public GUIText gameOverDisplay;
	public GameObject dashDisplay;
	
	public float runSpeed; //run speed
	public float jumpHeight; //jump height
	public float health; //holds health
	public int confettiOnHit; //amount of confetti created on hit
	public Vector2 healthPos;
	public float invulTime;
	public float attackWait;
	public bool isHit;
	public float dashDistance;
	public float dashTime;
	public float dashWait;


	private float displayedHealth = 3; //currently displayed health
	private bool updateHealth = true; //if the health bar needs updating
	private float curDirection = -1; //direction player is pointing
	private bool canJump = true; // if player can jump
	private bool canSpin = true; // if player can spin
	private List<GameObject> hearts = new List<GameObject> (); //list which holds health sprites;
	private bool isSpinning = false; //checks if player is spin attacking
	private float lastHit;
	private float lastAttack;
	private int score;
	private bool isDashing =false;
	private bool canDash = true;
	private float lastDash = 0.0f;
	private bool stopDash = false;
	public float deathTimer = 3.0f;






	void Start(){
		if (transform.rotation.y == 180)
			curDirection = -1;
		else
			curDirection = 1;
	}

	
	// Update is called once per frame
	void Update () {

		displayHealth ();
		death ();
		applyPlayerDirection (Input.GetAxisRaw (HorizontalBtn));
		damage ();
		if (transform.position.y < -3)
			health = 0;

		if (score >= 10) {
			gameOverDisplay.enabled = true;
			gameOverDisplay.text = ""+ gameObject.name + " Wins";
			Time.timeScale = 0;

		}

		dashDisplay.GetComponent<Scrollbar> ().size = (Time.time - lastDash) / dashWait;



	}

	void FixedUpdate() {

		/*
		 * Movement inputs
		 */
		Vector2 velocity = rigidbody2D.velocity;
		velocity.x = Input.GetAxis (HorizontalBtn) * runSpeed; //Horizontal input

		if ((Input.GetAxisRaw (VerticalBtn) == 1) && (canJump)) //Vertical input
		{
			velocity.y = jumpHeight;
			canJump = false;
		}//end if

		if (Input.GetAxisRaw (StrongAttackBtn)==1) {
			if (!isSpinning && canSpin && Time.time - lastAttack > attackWait){
				velocity.y = jumpHeight;
				lastAttack = Time.time;
				StartCoroutine (spinAttack (Vector3.down * 360, 0.2f));
			}
		}

		if (Input.GetAxisRaw (DashAttackBtn) == 1) {
			//Debug.Log ("dashbutton pressed");
			if(!isDashing && canDash && Time.time - lastDash > dashWait){
				lastDash = Time.time;	
				StartCoroutine (dashAttack (dashDistance,dashTime));
			}

		}



		rigidbody2D.velocity = velocity; //apply inputs
		animator.SetFloat("Velocity",velocity.magnitude);//inputs for animator
		animator.SetBool ("Fall", !canJump);


	}//end fixed update

	private void displayHealth(){

		if (displayedHealth != health) //check if health needs updating
			updateHealth = true;

		if (updateHealth){
			foreach (GameObject desHeart in hearts) //Destroy all heart sprites
				GameObject.Destroy (desHeart);
			hearts.Clear(); //sets list to zero
		
			for (int i=1; i<= health; i++) { //creates new heart sprite for each health 
				GameObject heartCanister = Instantiate (heart) as GameObject; //creat heart sprite
				Vector3 heartPos = new Vector3 ();

				//set position
				if (healthPos.x == 1)
					heartPos.x = (i * 0.033f);
				else
					heartPos.x = 1-(i * 0.033f);

				if (healthPos.y == 1)
					heartPos.y = 0.95f;
				else
					heartPos.y = 0.05f;

				heartCanister.transform.position = heartPos;
				hearts.Add(heartCanister); //adds heart to list
			}//end for

		displayedHealth = health;
		updateHealth = false;
		}//end if

	}//end displayHealth

	//respawns player if they die

	private void death()
	{ 
		if (health <= 0) 
			if (deathTimer > 0)
		{
			deathTimer -=Time.deltaTime;
			//gameObject.active = false;

			if(deathTimer <=0)
			   {
				//gameObject.active = true;

				Instantiate (newCandy, transform.position + Vector3.up, transform.rotation);
				Vector3 spawnPos = new Vector3 (Random.Range (-20.0f, 20.0f), 15.0f, 0); //picks random position
				health = 3; //resets life
				transform.position = spawnPos; //changes position
				rigidbody2D.velocity = Vector2.zero;
				deathTimer = deathTimer + 3.02f;


			}		
		}//end if
	}//end death

	private void applyPlayerDirection(float moveHorizontal)
	{

		if  ((curDirection != moveHorizontal) && (moveHorizontal != 0) && !isSpinning) //if player movement direction vs displayed direction
		{
			transform.Rotate(0,180,0); //rotates player
			curDirection = moveHorizontal; //updates direction
		}
	}

	private void damage (){
		if (isHit) {
			gameObject.GetComponentInChildren<PolygonCollider2D> ().enabled = false;
			isHit = false;
			lastHit = Time.time;
		}
		if (lastHit+invulTime < Time.time)
			gameObject.GetComponentInChildren<PolygonCollider2D> ().enabled = true;


	}
	//spin
	IEnumerator spinAttack(Vector3 byAngles, float inTime) {
		isSpinning = true;
		canSpin = false;
		stick.isAttacking = true;
		Debug.Log ("" + gameObject.name + "spinning");
		Quaternion startAngle = transform.rotation;
		Quaternion endAngle = Quaternion.Euler(transform.eulerAngles + byAngles);
		float direction = transform.eulerAngles.y;

		for(float i = 0; i < 1; i += Time.deltaTime/inTime) {
			transform.rotation = Quaternion.Euler(0,direction,Mathf.Lerp(0,360,i));
			yield return null;

		}
		transform.eulerAngles = new Vector3 (0,direction,0);
		//Debug.Log ("" + gameObject.name + "End spin");
		isSpinning = false;
		stick.isAttacking = false;
	}
	//dash
	IEnumerator dashAttack (float dashDistance,float dashTime) {
		float endPosition;
		int dashDirection;

		isDashing = true;
		canDash = false;
		stick.isAttacking = true;
		Debug.Log ("" + gameObject.name + "Dashing");
		rigidbody2D.gravityScale = 0;
	



		Vector3 startPosition = transform.position;
		//Debug.Log ("rotation Y: " + transform.eulerAngles.y);
		if (transform.eulerAngles.y >= 150)
			dashDirection = -1;
		else
			dashDirection = 1;

		endPosition = startPosition.x + (dashDirection * dashDistance);
		//Debug.Log ("Dash start: " + startPosition.x);
		//Debug.Log ("Dash Direction: " + (dashDirection ));
		//Debug.Log ("Dash end: " + endPosition);

		for (float i = 0; i < 1; i += Time.deltaTime/dashTime) {
			transform.position = new Vector3(dashDirection * Mathf.Lerp((dashDirection)*startPosition.x, (dashDirection)* endPosition, i), startPosition.y, startPosition.z);
			if ((transform.position.x < -30.5f && dashDirection == -1) || (transform.position.x > 26.5 && dashDirection == 1))
				stopDash = true;


			if (stopDash)
				break;

			yield return null;
		}


		stopDash = false;
		isDashing = false;
		canDash = true;
		stick.isAttacking = false;
		//Debug.Log ("" + gameObject.name + " finished Dashing");
		rigidbody2D.gravityScale = 4;
	}



	

	void OnCollisionEnter2D(Collision2D col){
		if (col.collider.tag == "ground") {
			canJump = true;
			canSpin = true;
		}
		else if (col.collider.tag == "Player") {
			canJump = true;
			canSpin = true;
			}

		if (col.collider.tag == "wall") {
			stopDash = true;

		}
	}

	void OnTriggerEnter2D(Collider2D trig) 
	{
		Debug.Log (trig.gameObject.tag);
		if (trig.gameObject.tag == "candy")
		{
			trig.gameObject.SetActive (false);
			score++;
			scoreDisplay.text = "score: " + score.ToString ();
		}
	}






}