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

public class GPSController : MonoBehaviour {

    public LocationInfo currentGPSInfo;
    public float updateRate = 3f;
    public bool debugging = true;

    private bool gpsInit = false;

    IEnumerator Init() {

        if (!Input.location.isEnabledByUser)
            yield break;

        Input.location.Start(1, 1);

        // Wait at max 20 serconds for GPS to init
        int maxWait = 20;

        // Init GPS data
        while(Input.location.status == LocationServiceStatus.Initializing && maxWait > 0) {
            yield return new WaitForSeconds(1);
            if(debugging)
                Debug.Log("GPS Polling (" + maxWait.ToString() + ")");
            maxWait--;
        }

        // GPS init failed to occur within 20 seconds
        if(maxWait < 1) {
            if(debugging)
                Debug.Log("GPS Timed out");
            yield break;
        }

        // GPS connection has failed
        if(Input.location.status == LocationServiceStatus.Failed) {
            if(debugging)
                Debug.Log("Unable to determine location");
            yield break;
        } else {
            // Connection successful
            // Toggle init boolean
            gpsInit = true;
            if(debugging)
                Debug.Log("GPS init successful");
        }
    }

    void Start() {
        StartCoroutine(Init());
        InvokeRepeating("UpdateGPSData", 2.0f, updateRate);
    }

    void UpdateGPSData() {

        if(gpsInit) {
            // Set the currentGPSInfo object to have
            // the lastest polled GPSData
            currentGPSInfo = Input.location.lastData;

            if(debugging) {
                Debug.Log("Longitude: " + currentGPSInfo.longitude.ToString());
                Debug.Log("Latitude: " + currentGPSInfo.latitude.ToString());
                Debug.Log("Altitude: " + currentGPSInfo.altitude.ToString ());
                Debug.Log("Horizontal Accuracy: " + currentGPSInfo.horizontalAccuracy.ToString());
                Debug.Log("Vertical Accuracy: " + currentGPSInfo.verticalAccuracy.ToString ());
                Debug.Log("Timestamp: " + currentGPSInfo.timestamp.ToString ());
            }
        }
    }
}