PostServiceHelper.java

/*
    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.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;

import com.prasanna.android.stacknetwork.model.Comment;
import com.prasanna.android.stacknetwork.model.Post;
import com.prasanna.android.stacknetwork.utils.JSONObjectWrapper;
import com.prasanna.android.stacknetwork.utils.JsonFields;
import com.prasanna.android.stacknetwork.utils.StackUri;

public class PostServiceHelper extends AbstractBaseServiceHelper {
  private static final String TAG = PostIntentService.class.getSimpleName();
  private static final PostServiceHelper postService = new PostServiceHelper();

  public static PostServiceHelper getInstance() {
    return postService;
  }

  private PostServiceHelper() {
  }

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

  public Post getPost(long id, String site) {
    return Post.parse(executeHttpGetRequest("/posts/" + id, getDefaultQueryParams(site)));
  }

  public Comment getComment(long id, String site) {
    Map<String, String> queryParams = getDefaultQueryParams(site);
    queryParams.put(StackUri.QueryParams.FILTER, StackUri.QueryParamDefaultValues.COMMENT_FILTER);
    return Comment.parseCommentItem(executeHttpGetRequest("/comments/" + id, queryParams));
  }

  public List<Post> getPosts(Collection<Long> postIds, String site) {
    final StringBuffer semiColonDelimitedPostIds = new StringBuffer();
    final List<Post> posts = new ArrayList<Post>();
    boolean hasMore = true;
    int page = 1;

    for (Long postId : postIds) {
      semiColonDelimitedPostIds.append(postId + ";");
    }

    final String ids = semiColonDelimitedPostIds.substring(0, semiColonDelimitedPostIds.length() - 1);
    Map<String, String> defaultQueryParams = getDefaultQueryParams(site);
    defaultQueryParams.put(StackUri.QueryParams.PAGE_SIZE, "50");
    while (hasMore) {
      defaultQueryParams.put(StackUri.QueryParams.PAGE, String.valueOf(page++));
      JSONObjectWrapper responseJson = executeHttpGetRequest("/posts/" + ids, defaultQueryParams);
      posts.addAll(Post.parseCollection(responseJson));
      hasMore = responseJson.getBoolean(JsonFields.HAS_MORE);
      sleep(100);
    }
    return posts;
  }
}