package uk.co.blatech.blaupload.util;

import android.os.AsyncTask;
import android.util.Log;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.CookieStore;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.cookie.BasicClientCookie;
import org.json.JSONArray;
import org.json.JSONException;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;


/**
 * This class is used for loading a JSON array from a given URL
 *
 * TODO: Make the cookie stuff generic
 * Created by joe on 02/08/14.
 */
public class JSONLoader extends AsyncTask<String, Void, JSONArray> {

    private String url;


    /**
     *
     * @param url - The URL to load JSON from
     * @return JSONArray of data from the URL
     */
    @Override
    protected JSONArray doInBackground(String... url) {

        this.url = url[0];
        String jsonText = readJSON();
        JSONArray json = null;
        try {
            json = new JSONArray(jsonText);
        } catch (JSONException e) {
            //TODO: Error handling if we got something other than JSON
            Log.e(JSONLoader.class.toString(), "Failed to parse JSON");
            e.printStackTrace();
        }
        return json;
    }

    private String readJSON() {

        StringBuilder builder = new StringBuilder();
        DefaultHttpClient client = new DefaultHttpClient();
        CookieStore cookieStore = new BasicCookieStore();
        //TODO: Don't hard code the cookie.
        BasicClientCookie cookie = new BasicClientCookie("password", "lolnopass");
        cookie.setDomain(".blaupload.co.uk");
        cookie.setPath("/");
        cookieStore.addCookie(cookie);
        client.setCookieStore(cookieStore);

        HttpGet httpGet = new HttpGet(url);

        try {
            //Read the JSON from the URL
            HttpResponse response = client.execute(httpGet);
            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            if (statusCode == 200) {
                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                while ((line = reader.readLine()) != null) {
                    builder.append(line);
                }
            } else {
                //TODO: Error handling if there's no JSON there
                Log.e(JSONLoader.class.toString(), "Failed to download file");
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return builder.toString();
    }

    @Override
    protected void onPostExecute(JSONArray result) {
        EventBus.getInstance().post(new JSONLoaderResultEvent(result));

    }


}