com.prasanna.android.stacknetwork.service.WriteServiceHelper.java Source code

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Here is the source code for com.prasanna.android.stacknetwork.service.WriteServiceHelper.java

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/*
Copyright (C) 2014 Prasanna Thirumalai
    
This file is part of StackX.
    
StackX is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
StackX is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with StackX.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.prasanna.android.stacknetwork.service;

import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;

import com.prasanna.android.http.ClientException;
import com.prasanna.android.http.HttpContentTypes;
import com.prasanna.android.http.HttpHeaderParams;
import com.prasanna.android.stacknetwork.model.Comment;
import com.prasanna.android.stacknetwork.utils.JSONObjectWrapper;
import com.prasanna.android.stacknetwork.utils.JsonFields;
import com.prasanna.android.stacknetwork.utils.StackUri;
import com.prasanna.android.stacknetwork.utils.StackUri.QueryParamDefaultValues;
import com.prasanna.android.utils.LogWrapper;

public class WriteServiceHelper extends AbstractBaseServiceHelper {
    private static final String TAG = WriteServiceHelper.class.getSimpleName();

    private static final WriteServiceHelper INSTANCE = new WriteServiceHelper();

    protected WriteServiceHelper() {
    }

    public static WriteServiceHelper getInstance() {
        return INSTANCE;
    }

    @Override
    protected String getLogTag() {
        return TAG;
    }

    public Comment addComment(long postId, String body) {
        return writeComment("/posts/" + postId + "/comments/add", body);
    }

    public Comment editComment(long commentId, String editedText) {
        return writeComment("/comments/" + commentId + "/edit", editedText);
    }

    private Comment writeComment(String restEndPoint, String body) {
        List<BasicNameValuePair> parameters = getBasicNameValuePartListForPost();
        parameters.add(
                new BasicNameValuePair(StackUri.QueryParams.FILTER, QueryParamDefaultValues.ITEM_DETAIL_FILTER));
        parameters.add(new BasicNameValuePair(StackUri.QueryParams.BODY, body));

        Map<String, String> requestHeaders = new HashMap<String, String>();
        requestHeaders.put(HttpHeaderParams.CONTENT_TYPE, HttpContentTypes.APPLICATION_FROM_URL_ENCODED);
        requestHeaders.put(HttpHeaderParams.ACCEPT, HttpContentTypes.APPLICATION_JSON);

        try {
            JSONObjectWrapper jsonObject = executeHttpPostRequest(restEndPoint, requestHeaders, null,
                    new UrlEncodedFormEntity(parameters));
            JSONArray jsonArray = jsonObject.getJSONArray(JsonFields.ITEMS);
            if (jsonArray != null && jsonArray.length() == 1)
                return Comment.parse(JSONObjectWrapper.wrap(jsonArray.getJSONObject(0)));
        } catch (UnsupportedEncodingException e) {
            throw new ClientException(ClientException.ClientErrorCode.INVALID_ENCODING);
        } catch (JSONException e) {
            LogWrapper.e(TAG, e.getMessage());
        }
        return null;
    }

    public void deleteComment(long commentId) {
        String restEndPoint = "/comments/" + commentId + "/delete";

        List<BasicNameValuePair> parameters = getBasicNameValuePartListForPost();

        Map<String, String> requestHeaders = new HashMap<String, String>();
        requestHeaders.put(HttpHeaderParams.CONTENT_TYPE, HttpContentTypes.APPLICATION_FROM_URL_ENCODED);

        try {
            executeHttpPostRequest(restEndPoint, requestHeaders, null, new UrlEncodedFormEntity(parameters));
        } catch (UnsupportedEncodingException e) {
            throw new ClientException(ClientException.ClientErrorCode.INVALID_ENCODING);
        }
    }
}