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

public class Terminal : MonoBehaviour
{
	List<string> commands = new List<string>();
	List<string> found= new List<string>();

	public Text autocompleteText;
	public bool terminalActive;
	string terminalInput;
	public InputField terminalField;
	string[] strArray;
	public GameObject terminalFieldGO;

	void Start()
	{

		terminalActive = false;
		terminalFieldGO.SetActive(false);

		//add commands to the list
		commands.Add("load");
		commands.Add("reload");
		commands.Add("fast");
		commands.Add("slow");

	}

	public void OnType()
	{
		found = commands.FindAll( w => w.StartsWith(terminalField.text));
		if (found.Count > 0)
		{
			autocompleteText.text = found[0];
		}

		else
		{
			autocompleteText.text="";

		}

		if(terminalField.text.Equals(""))
		{
			autocompleteText.text="";
		}
	}

	void Update()
	{

		InputProcessor();
	}

	void InputProcessor()
	{

		if(Input.anyKeyDown)
		{
			if(terminalActive)
			{
				List<string> found = commands.FindAll( w => w.StartsWith(terminalField.text));
				if (found.Count > 0 && Input.GetKeyDown(KeyCode.RightArrow))
				{
					terminalField.text = found[0];
					terminalField.MoveTextEnd(false);

				}
			}
		}

		if(Input.GetKeyDown(KeyCode.BackQuote))
		{
			terminalActive = !terminalActive;
			StartTerminal(terminalActive);
		}

		if(Input.GetKeyDown(KeyCode.Return))
		{
			//check if a suggestion is available
			//if yes, make it the command

			if (found.Count > 0)
			{
				terminalField.text = found[0];
			}

			ProcessInput();
		}

		if(terminalActive && Input.GetKeyDown(KeyCode.UpArrow))
		{

			terminalField.text = PlayerPrefs.GetString("lastCommand", "");
			terminalField.MoveTextEnd(false);
		}

		if(Input.GetKeyDown(KeyCode.Escape) && terminalActive)
		{
			DeactivateTerminal();
		}
	}

	void ClearConsole()
	{
		// This simply does "LogEntries.Clear()" the long way:
		var logEntries = System.Type.GetType("UnityEditorInternal.LogEntries,UnityEditor.dll");
		var clearMethod = logEntries.GetMethod("Clear", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public);
		clearMethod.Invoke(null,null);
	}

	void StartTerminal(bool _terminalActiveStatus)
	{
		if(_terminalActiveStatus = true)
		{
			ClearConsole();
			terminalFieldGO.SetActive(true);
			UnityEngine.EventSystems.EventSystem.current.SetSelectedGameObject(terminalField.gameObject, null);
			terminalField.OnPointerClick(new UnityEngine.EventSystems.PointerEventData(UnityEngine.EventSystems.EventSystem.current));
			Cursor.visible = true;

		}

		else
		{
			Cursor.visible = false;
		}

		terminalActive = _terminalActiveStatus;
	}

	void ProcessInput()
	{
		//store input
		string input = terminalField.text;

		//remember this command
		PlayerPrefs.SetString("lastCommand", input);
		//break the input into two pieces separating at the space
		strArray = terminalField.text.Split(" "[0]);

		//store the first part as the command
		string command = strArray[0];

		//store the second part (if it exists) as a value that
		string value = "";
		if(strArray.Length > 1)
		{
			value = strArray[1];
		}

		//clean the input field
		terminalField.text = "";

		Execute(command, value);

		DeactivateTerminal();


	}

	void DeactivateTerminal()
	{
		terminalFieldGO.SetActive(false);
		terminalActive = false;
	}

	void Execute(string _command, string _value)
	{
		_command = _command.ToLower();
		//Add whatever commands you want to in after the case.
		switch(_command)
		{

		//>>>>>>>>>
		case "load":

			Application.LoadLevel(int.Parse(_value));
			Debug.Log("Loading scene "+_value);
			break;

		//>>>>>>>>>
		case "reload":

			Application.LoadLevel(Application.loadedLevel);
			print("Reloading");
			break;

		//>>>>>>>>>
		case "fast":
			Time.timeScale = 2*Time.timeScale;
			print(Time.timeScale+"x speed");
			break;

		//>>>>>>>>>
		case "slow":
			Time.timeScale = Time.timeScale/2;
			print(Time.timeScale+"x speed");
			break;

		//>>>>>>>>>
		case "fuck":
			if(_value.Equals("you"))
			{
				print("Fuck you too");
			}

			else
			{
				print("Invalid command");
			}

			break;

		default:
			print("Invalid command");
			break;
		}
	}

}