using Assets.Scripts;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net;
using System.Text;
using UnityEngine;
using UnityEngine.EventSystems;

public class ExperimentController : MonoBehaviour {

    GameObject startDot;
    GameObject nextDot;
    int trialIndex;    
    int trialDotIndex;
    Participant participant;
    List<GameObject> dots = new List<GameObject>();
    Stopwatch stopwatch = new Stopwatch();
    GameObject playerCamera;
    GameObject text;
    DataSet dataSet = new DataSet();
    string platform;
    // Use this for initialization
	void Start () {
#if UNITY_ANDROID 
        platform = "cardboard";
#endif
#if UNITY_EDITOR
        platform = "mouse";
#endif
#if UNITY_STANDALONE_WIN
        platform = "oculus";
#endif
        platform = "mouse";
        UnityEngine.Debug.Log(platform);
        string response = "";
        UnityEngine.Debug.Log(Application.persistentDataPath);
        //Load Trial data from server
        using (WebClient client = new WebClient())
        {
            string endpoint = "http://<SERVER INSTANCE URL>/" + platform;
            response = client.DownloadString(endpoint);
            UnityEngine.Debug.Log("Received Response: " + response);
        }
        participant = new Participant(response);
        startDot = GameObject.Find("StartButton");
        playerCamera = GameObject.FindGameObjectsWithTag("MainCamera")[0];
        trialIndex = 0;
        trialDotIndex = 0;
        //Hide all the non-start dots and the DONE text
        foreach (GameObject go in GameObject.FindGameObjectsWithTag("Dot"))
        {
            dots.Add(go);
            Hide(go);
        };
        text = GameObject.Find("Text");
        text.SetActive(false);
        
    }

    void Hide(GameObject dot)
    {
        dot.SetActive(false);
    }

    void Show(GameObject dot)
    {
        dot.SetActive(true);
    }

    public void NextDot()
    {
        //Stop the timer if it is running.
        if (stopwatch.IsRunning)
        {
            stopwatch.Stop();
            double time = stopwatch.Elapsed.TotalSeconds;
            stopwatch.Reset();
            double angle = Vector3.Angle(nextDot.transform.position, playerCamera.transform.position);
            //double distance = Vector3.Distance(nextDot.transform.position, startDot.transform.position);
            //Save a sample
            SaveSample(angle, time, false);
        }
        //Advance to the next dot and make it visible, while hiding the start dot.
        if (trialDotIndex < participant.trials[trialIndex].Length)
        {
            
            nextDot = FindDot(participant.trials[trialIndex][trialDotIndex]);
            trialDotIndex++;
            Show(nextDot);
            Hide(startDot);
        }
        //Advance to the next trial
        else if(trialIndex < participant.trials.Length)
        {
            trialIndex++;
            trialDotIndex = 0;
            //Save data if we aren't in practice mode.
            if(participant.participantId != 9999) dataSet.SaveDataSet();
            dataSet.Samples.Clear();
            if (trialIndex < participant.trials.Length && participant.participantId != 9999)
            {
                nextDot = FindDot(participant.trials[trialIndex][trialDotIndex]);
                Show(nextDot);
                Hide(startDot);

            }
            else
            {
                text.SetActive(true);
            }
        }
        else
        {
            //Save data if we aren't in practice mode.
            if (participant.participantId != 9999)  dataSet.SaveDataSet();
        }
        stopwatch.Start();


    }

    //Hide current dot, Show start dot, and reset the timer.
    public void BackToStart()
    {
        stopwatch.Stop();
        double time = stopwatch.Elapsed.TotalSeconds;
        stopwatch.Reset();
        double angle = Vector3.Angle(nextDot.transform.position, playerCamera.transform.position);
        //double distance = Vector3.Distance(nextDot.transform.position, startDot.transform.position);
        //Save a sample
        SaveSample(angle, time, true);
        Hide(nextDot);
        Show(startDot);
        stopwatch.Start();
        

    }

    //Wrapper method to convert the Cardboard way of handling things to the Oculus one.
    public void CardboardWrapper(GameObject go, PointerEventData eventData)
    {
        UnityEngine.Debug.Log(eventData.pointerPressRaycast.worldPosition);
        if (go != null)
        {
            UnityEngine.Debug.Log(go.name);
            if (go.name == "StartButton")
            {
                NextDot();
            }
            else
            {
                BackToStart();
            }
        }
        else
        {
            UnityEngine.Debug.Log("Missed");
        }
    }

    void SaveSample(double angle, double time, bool direction)
    {
        Sample sample = new Sample();
        sample.Angle = angle;
        //Fill in dot distances.
        if(nextDot.name.Contains("Short")){
            sample.Distance = 500;
        }
        else if(nextDot.name.Contains("Medium")){
            sample.Distance = 1000;
        }
        else if(nextDot.name.Contains("Long")){
            sample.Distance = 1500;
        }
        if (nextDot.name.Contains("Up")){
            sample.Angle = 90;
        }
        else if (nextDot.name.Contains("Right"))
        {
            sample.Angle = 0;
        }else if (nextDot.name.Contains("Left"))
        {
            sample.Angle = 180;
        }
        sample.Time = time;
        sample.Direction = direction;
        sample.DotName = nextDot.name;
        sample.DotIndex = trialDotIndex;
        sample.TrialIndex = trialIndex + 1;
        sample.ParticipantID = participant.participantId;
        sample.Platform = platform;
        TimeSpan t = DateTime.UtcNow - new DateTime(1970, 1, 1);
        sample.Timestamp = (long)t.TotalMilliseconds;
        dataSet.Samples.Add(sample);
    }

    GameObject FindDot(string name)
    {
        foreach (GameObject dot in dots)
        {
            if (dot.name == name) return dot;
        }
        return null;
    }

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

    
}