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

public class EnemySpawn : MonoBehaviour {

	protected GameObject[] spawnObject = new GameObject[5];


	//Vars for enemy position
	protected int numberOfCols;
	protected int numberOfRows;
	protected float spawnAreaDepth;
	protected float spawnAreaWidth;

	protected int accenAmt;
	protected int sagittAmt;
	protected int legionAmt;
	protected int sagittHorseAmt;
	protected int centAmt;

	private int numberOfTroopTypes = 4;
	private float spawnAreaHeight = 2.5f;
	Vector3 spawnPosition;

	void Awake () {

		spawnObject [0] = (GameObject)(Resources.Load("Models/SM_Enemy_Accensus"));
		spawnObject [1] = (GameObject)(Resources.Load("Models/SM_Enemy_Sagittarii"));
		spawnObject [2] = (GameObject)(Resources.Load("Models/SM_Enemy_Legionary"));
		spawnObject [3] = (GameObject)(Resources.Load("Models/SM_Enemy_Sagittarii_Horse"));
		spawnObject [4] = (GameObject)(Resources.Load ("Models/SM_Enemy_Centurion"));

	}

	void Start()
	{

	}

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

	}

	void SetStartingValues(Dictionary<string,int> startingValues)
	{
		//Tries to run the code to see if there is a problem.
		try
		{
			numberOfCols = startingValues ["Number of Cols"];
			numberOfRows = startingValues ["Number of Rows"];
			spawnAreaDepth = startingValues ["Depth"];
			spawnAreaWidth = startingValues ["Width"];

			accenAmt = startingValues ["Accen Amt"];
			sagittAmt = startingValues ["Sagitt Amt"];
			legionAmt = startingValues ["Legionary Amt"];
			sagittHorseAmt = startingValues ["SagittHorse Amt"];
			centAmt = startingValues ["Cent Amt"];
		}
		//If a value was wrong then it will throw an exception and we print it.
		catch(KeyNotFoundException)
		{
			Debug.Log ("KeyNotFoundInDictionary ");
		}

		//Takes the system time and date and stores it in currentTime.
		System.DateTime currentTime = System.DateTime.Now;
		//APlaces the milliseconds 0-999 into the random seed. This means that it will generate the enemies far more randomly.
		Random.seed = currentTime.Millisecond;

		//Temp variables so that we can compared (Used to set enemy limits)
		int accenSpawned = 0;
		int sagittSpawned = 0;
		int legionSpawned = 0;
		int sagittHorseSpawned = 0;
		int centSpawned = 0;

		for (int i = 0; i <numberOfRows; i++) { //Cycles from 0 to the number of enemies var until it's full. Int I is creating a variable to use.

			for(int j = 0; j < numberOfCols; j++){ //J is used this time as it's next in the alphabet. //This is nested in another if statement.

				spawnPosition = transform.position; //Stores the objects position into the Vector 3.

				spawnPosition.z += i * (spawnAreaDepth/numberOfRows);
				spawnPosition.x += j * (spawnAreaWidth/numberOfCols);
				spawnPosition.y = spawnAreaHeight;

				//Sets a random range between 0,2 however 2 in exclusive so it's between 0 and 1.
				int rand = Random.Range (0,numberOfTroopTypes);

				//Asks the value of ceturions spawned == to 9 which is the cent amt. IF TRUE then it keeps doing the random range until it gets a 1 for the pilus unit.
				if (accenSpawned == accenAmt)
				{
						if (sagittSpawned == sagittAmt)
						{
							rand = Random.Range(2, numberOfTroopTypes);
						}
						else if (legionSpawned == legionAmt)
						{
							int[] intRange = {1,3,4};
							int rangeFound = Random.Range (0,3);
							rand = intRange[rangeFound];
						}
						else if (sagittHorseSpawned == sagittHorseAmt)
						{
							int[] intRange = {1,2,4};
							int rangeFound = Random.Range (0,3);
							rand = intRange[rangeFound];
						}
						else if (centSpawned == centAmt)
						{
							rand = Random.Range (1,4);
						}
						else
						{
							rand = Random.Range (1,numberOfTroopTypes);
						}
				}

				if (sagittSpawned == sagittAmt)
				{
					if (accenSpawned == accenAmt)
					{
						rand = Random.Range(2, numberOfTroopTypes);
					}
					else if (legionSpawned == legionAmt)
					{
						int[] intRange = {0,3,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (sagittHorseSpawned == sagittHorseAmt)
					{
						int[] intRange = {0,2,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (centSpawned == centAmt)
					{
						int [] intRange = {0,2,3};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else
					{
						int [] intRange = {0,2,3,4};
						int rangeFound = Random.Range (0,numberOfTroopTypes);
						rand = intRange[rangeFound];
					}
				}

				if (legionSpawned == legionAmt)
				{
					if (accenSpawned == accenAmt)
					{
						int[] intRange = {1,3,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (sagittSpawned == sagittAmt)
					{
						int[] intRange = {0,3,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (sagittHorseSpawned == sagittHorseAmt)
					{
						int[] intRange = {0,1,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (centSpawned == centAmt)
					{
						int [] intRange = {0,1,3};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else
					{
						int [] intRange = {0,1,3,4};
						int rangeFound = Random.Range (0,numberOfTroopTypes);
						rand = intRange[rangeFound];;
					}
				}

				if (sagittHorseSpawned == sagittHorseAmt)
				{
					if (accenSpawned == accenAmt)
					{
						int[] intRange = {1,2,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (sagittSpawned == sagittAmt)
					{
						int[] intRange = {0,2,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (legionSpawned == legionAmt)
					{
						int[] intRange = {0,1,4};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (centSpawned == centAmt)
					{
						int [] intRange = {0,1,2};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else
					{
						int [] intRange = {0,1,2,4};
						int rangeFound = Random.Range (0,numberOfTroopTypes);
						rand = intRange[rangeFound];;
					}
				}

				if (centSpawned == centAmt)
				{
					if (accenSpawned == accenAmt)
					{
						int[] intRange = {1,2,3};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (sagittSpawned == sagittAmt)
					{
						int[] intRange = {0,2,3};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (legionSpawned == legionAmt)
					{
						int[] intRange = {0,1,3};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else if (sagittHorseSpawned == sagittHorseAmt)
					{
						int [] intRange = {0,1,2};
						int rangeFound = Random.Range (0,3);
						rand = intRange[rangeFound];
					}
					else
					{
						int [] intRange = {0,1,2,3};
						int rangeFound = Random.Range (0,numberOfTroopTypes);
						rand = intRange[rangeFound];;
					}
				}

				switch (rand)
				{
				case 0:
					accenSpawned++;
					break;
				case 1:
					sagittSpawned++;
					break;
				case 2:
					legionSpawned++;
					break;
				case 3:
					sagittHorseSpawned++;
					break;
				case 4:
					centSpawned++;
					break;
				}

				//Creates a new gameobject from the rand number in the spawnObjects array.
				GameObject newObject = Instantiate(spawnObject[rand],spawnPosition,spawnObject[rand].transform.rotation)as GameObject; //Takes the gameobject selected rotation so it's on the right rotation.
				newObject.transform.parent = transform; //Stores the gameobjects transform into the parents transform (Enemy Manager) Useful for neatness.

			}
		}
	}