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

public class MenuController : MonoBehaviour {

	/** Static container that stores user selected option. This is then referred by other scene **/
	public static StimuliOption mStimuliOption;

	/** Dropdowns **/
	private Dropdown mDropdownStimuliDirection;
	private Dropdown mDropdownStimuliChipSequenceAlgorithm;

	private InputField mInputFieldStimuliDuration;
	private InputField mInputFieldRestDuration;
	private InputField mInputFieldTotalEpochNum;

	private Button mButtonCustomizeRing;
	private Button mButtonSave;

	List<string> ListStimuliDirection = new List<string>() {"Both", "Left", "Right"};
	List<string> ListStimuliChipSequenceAlgorithm = new List<string>() {"SineWave", "ShortestLength"};

	private float DEFAULT_FREQUENCY = 45f;

	// Use this for initialization
	void Start () {		
		// Create a data container that stores all user selected options
		if (mStimuliOption == null)
			mStimuliOption = new StimuliOption();
		if (mStimuliOption.StimuliFrequencies == null) {
			mStimuliOption.StimuliFrequencies = new float[20];
			for (int i = 0; i < mStimuliOption.StimuliFrequencies.Length; i++)
				mStimuliOption.StimuliFrequencies [i] = DEFAULT_FREQUENCY;
		}
		

		InitDefaultValue ();

		mButtonSave = GameObject.Find ("ButtonSave").GetComponent<Button> ();
		mButtonSave.onClick.AddListener (SaveOnClick);

		mButtonCustomizeRing = GameObject.Find ("ButtonCustomizeRing").GetComponent<Button> ();
		mButtonCustomizeRing.onClick.AddListener (CustomizeRingOnClick);

	}

	/**
	 * Initialize default value for each UI elements
	 */
	void InitDefaultValue() {

		mDropdownStimuliDirection = GameObject.Find ("DropdownStimuliDirection").GetComponent<Dropdown> ();

		mInputFieldStimuliDuration = GameObject.Find ("menu_stimuli_duration").GetComponentInChildren<InputField> ();
		mInputFieldStimuliDuration.text = "5";

		mInputFieldRestDuration = GameObject.Find ("menu_resting_duration").GetComponentInChildren<InputField> ();
		mInputFieldRestDuration.text = "1";

		mInputFieldTotalEpochNum = GameObject.Find ("menu_stimuli_total_epoch_num").GetComponentInChildren<InputField> ();
		mInputFieldTotalEpochNum.text = "10";

		mDropdownStimuliChipSequenceAlgorithm = GameObject.Find ("DropdownChipSequenceAlgorithm").GetComponent<Dropdown> ();
		PopulateList ();
	}

	void CustomizeRingOnClick() {
		Debug.Log ("Customize ring button clicked!");

		// debug
		for (int i = 0; i < mStimuliOption.StimuliFrequencies.Length; i++) {
			Debug.Log ("freq[" + i + "]=" + mStimuliOption.StimuliFrequencies[i]);
		}
		SceneManager.LoadScene("menu-customize-ring");

	}

	void SaveOnClick() {
		Debug.Log ("Save button clicked!");

		// get user settings and save to a PlayerPref file
		string direction = mDropdownStimuliDirection.GetComponentInChildren<Text>().text;
		Debug.Log ("Direction: " + direction);

		int stimuliDuration = int.Parse(mInputFieldStimuliDuration.text);
		Debug.Log ("Stimuli duration: " + stimuliDuration);

		int restDuration = int.Parse(mInputFieldRestDuration.text);
		Debug.Log ("Rest duration: " + restDuration);

		int totalEpochNum = int.Parse(mInputFieldTotalEpochNum.text);
		Debug.Log ("Total epoch num: " + totalEpochNum);

		string chipSequenceAlgorithm = mDropdownStimuliChipSequenceAlgorithm.GetComponentInChildren<Text>().text;
		Debug.Log ("Chip sequence algorithm: " + chipSequenceAlgorithm);

		// save all settings to container
		mStimuliOption.StimuliDirection = direction;
		mStimuliOption.StimuliEpochDuration = stimuliDuration;
		mStimuliOption.StimuliRestDuration = restDuration;
		mStimuliOption.StimuliTotalEpochNum = totalEpochNum;
		mStimuliOption.StimuliChipSequenceAlgorithm = chipSequenceAlgorithm;

		// load the next scene
		SceneManager.LoadScene("osvr-ssvep");
	}

	void PopulateList() {
		mDropdownStimuliDirection.AddOptions (ListStimuliDirection);
		mDropdownStimuliChipSequenceAlgorithm.AddOptions (ListStimuliChipSequenceAlgorithm);
	}
	
	// Update is called once per frame
	void Update () {
	
	}


	public class StimuliOption {

		public string StimuliDirection { get; set; }
		public int StimuliEpochDuration { get; set; }
		public int StimuliRestDuration { get; set; }
		public int StimuliTotalEpochNum { get; set; }
		public string StimuliChipSequenceAlgorithm { get; set; }
		public float[] StimuliFrequencies { get; set; }
		public int[] StimuliRingSectors { get; set; }
		public float[] StimuliRingAngle { get; set; }
	}
}