JSONWebServiceClient.java :  » UnTagged » horaires-ter-sncf » com » naholyr » android » horairessncf » ws » Android Open Source

package com.naholyr.android.horairessncf.ws;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;

import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

import com.naholyr.android.horairessncf.Common;

class JSONWebServiceClient {

  public JSONResponse query(String serverUrl, Map<String, Object> params) throws IOException, MalformedURLException, JSONException {
    String queryParams = "";
    for (Map.Entry<String, Object> entry : params.entrySet()) {
      queryParams += queryParams.equals("") ? "?" : "&";
      queryParams += URLEncoder.encode(entry.getKey()) + "=" + URLEncoder.encode(String.valueOf(entry.getValue()));
    }
    URL url = new URL(serverUrl + queryParams);
    InputStream is = (InputStream) url.getContent();

    if (is == null) {
      throw new IOException("Erreur au chargement du service " + url.toString());
    }

    StringWriter writer = new StringWriter();
    BufferedReader buffer = new BufferedReader(new InputStreamReader(is), 512);
    String line = "";
    while (null != (line = buffer.readLine())) {
      writer.write(line);
    }

    return new JSONResponse(writer.toString());
  }

  public static final class JSONResponse {

    private JSONObject mObject;

    public JSONResponse(String json) throws JSONException {
      Log.d(Common.TAG, json);
      mObject = new JSONObject(json);
    }

    public boolean isSuccess() {
      return mObject.has("success");
    }

    public JSONObject getSuccessData() {
      if (isSuccess()) {
        try {
          return mObject.getJSONObject("success");
        } catch (JSONException e) {
          return null;
        }
      } else {
        return null;
      }
    }

    public boolean isError() {
      return mObject.has("error");
    }

    public JSONObject getErrorData() {
      if (isError()) {
        try {
          return mObject.getJSONObject("info");
        } catch (JSONException e) {
          return null;
        }
      } else {
        return null;
      }
    }

    public String getErrorMessage() {
      return getErrorMessage(true);
    }

    public String getErrorMessage(boolean withCode) {
      if (isError()) {
        try {
          return mObject.getInt("code") + " - " + mObject.getString("error");
        } catch (JSONException e) {
          return null;
        }
      } else {
        return null;
      }
    }

    public int getCode() {
      try {
        return mObject.getInt("code");
      } catch (JSONException e) {
        return 0;
      }
    }

  }

}