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package com.example.android.sunshine.app;

import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Created by psarya01 on 2/2/2015.
 */
public static class ForecastFragment extends Fragment {

    public ForecastFragment() {
    }

    @Override
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        //Add this line in order for the fragment to handle menu events
        setHasOptionsMenu(true);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu,MenuInflater inflater){
        inflater.inflate(R.menu.forecastfragment,menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item){
        //Handle action bar item clicks here. The action bar will
        //automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml
        int id=item.getItemId();
        if (id==R.id.action_refresh){
            FetchWeatherTask weatherTask =new FetchWeatherTask();
            weatherTask.execute("94043");
            return true;
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_main, container, false);

        String[] forecastArray = {
                "Today - Sunny - 88/63",
                "Tomorrow - Foggy - 70/40",
                "Weds - Cloudy - 72/63",
                "Thurs - Asteroids - 75/65",
                "Fri - Heavy Rain - 65/56",
                "Sat - HELP TRAPPED IN WEATHERSTATION - 60/51",
                "Sun - Sunny - 80/68"};

        List<String> weekForecast=new ArrayList<String>(
                Arrays.asList(forecastArray));

        ArrayAdapter<String> mForecastAdapter;
        mForecastAdapter = new ArrayAdapter<String>(
                getActivity(),
                R.layout.list_item_forecast,
                R.id.list_item_forecast_textview,
                weekForecast);

        ListView listView= (ListView)rootView.findViewById(
                R.id.listview_forecast);
        listView.setAdapter(mForecastAdapter);
        return rootView;

        public class FetchWeatherTask extends AsyncTask<String,Void,Void> {
            private final String LOG_TAG = FetchWeatherTask.class.getSimpleName();

          @Override
          protected Void doInBackground(String... params){

              // These two need to be declared outside the try/catch
              // so that they can be closed in the finally block.
              HttpURLConnection urlConnection = null;
              BufferedReader reader = null;

              // Will contain the raw JSON response as a string.
              String forecastJsonStr = null;
              String format = "json";
              String units = "metric";
              int numDays = 7;


              try

              {
                  // Construct the URL for the OpenWeatherMap query
                  // Possible parameters are avaiable at OWM's forecast API page, at
                  // http://openweathermap.org/API#forecast
                  final String FORECAST_BASE_URL=
                          "http://api.openweathermap.org/data/2.5/forecast/daily?";
                  final String QUERY_PARAM="q";
                  final String FORMAT_PARAM="mode";
                  final String UNITS_PARAM = "units";
                  final String DAYS_PARAM = "cnt";

                  Uri builtUri = Uri.parse(FORECAST_BASE_URL).buildUpon()
                          .appendQueryParameter(QUERY_PARAM,params[0])
                          .appendQueryParameter(FORMAT_PARAM,format)
                          .appendQueryParameter(UNITS_PARAM,units)
                          .appendQueryParameter(DAYS_PARAM,Integer.toString(numDays))
                          .build();
                  URL url = new URL (builtUri.toString());

                  Log.v(LOG_TAG, "Built URI" + builtUri.toString());

                  // Create the request to OpenWeatherMap, and open the connection
                  urlConnection = (HttpURLConnection) url.openConnection();
                  urlConnection.setRequestMethod("GET");
                  urlConnection.connect();

                  // Read the input stream into a String
                  InputStream inputStream = urlConnection.getInputStream();
                  StringBuffer buffer = new StringBuffer();
                  if (inputStream == null) {
                      // Nothing to do.
                      forecastJsonStr = null;
                  }
                  reader = new BufferedReader(new InputStreamReader(inputStream));

                  String line;
                  while ((line = reader.readLine()) != null) {
                      // Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
                      // But it does make debugging a *lot* easier if you print out the completed
                      // buffer for debugging.
                      buffer.append(line + "\n");
                  }

                  if (buffer.length() == 0) {
                      // Stream was empty.  No point in parsing.
                      forecastJsonStr = null;
                  }
                  forecastJsonStr = buffer.toString();
                  Log.v(LOG_TAG, "Forecast JSON String: " + forecastJsonStr);
              }

              catch(
                      IOException e
                      )

              {
                  Log.e("PlaceholderFragment", "Error ", e);
                  // If the code didn't successfully get the weather data, there's no point in attemping
                  // to parse it.
                  forecastJsonStr = null;
              }

              finally

              {
                  if (urlConnection != null) {
                      urlConnection.disconnect();
                  }
                  if (reader != null) {
                      try {
                          reader.close();
                      } catch (final IOException e) {
                          Log.e("PlaceholderFragment", "Error closing stream", e);
                      }
                  }
              }

          }

        }




    }


}