module MainHelper

  def read_newest_post offset_num
    micro_posts_array = []
    micro_posts = MicroPost.all.order(post_time: :desc).limit(20).offset(offset_num)
    if !micro_posts.empty?
      micro_posts.each do |micro_post|
        x = Hash.new()
        x["username"] = micro_post.user.name
        x["userpic"] = micro_post.user.picurl
        x["postid"] = micro_post.id
        x["title"] = micro_post.title
        x["content"] = micro_post.content
        case micro_post.post_type
          when 1
            x["type"] = "新鲜事"
          when 2
            x["type"] = "组团信息"
          when 3
            x["type"] = "失物招领"
          else
            x["type"] = "新鲜事"
        end
        x["time"] = get_strftime(micro_post.post_time)
        x["pics"] = micro_post.pic.split(',') if micro_post.pic
        x["peo_num"] = micro_post.engage_people
        micro_posts_array << x
      end
    end
    return micro_posts_array
  end

  def get_post posts
    micro_posts_array = []
    if !posts.empty?
      posts.each do |micro_post|
        x = Hash.new()
        x["username"] = micro_post.user.name
        x["userpic"] = micro_post.user.picurl
        x["postid"] = micro_post.id
        x["title"] = micro_post.title
        x["content"] = micro_post.content
        case micro_post.post_type
          when 1
            x["type"] = "新鲜事"
          when 2
            x["type"] = "组团信息"
          when 3
            x["type"] = "失物招领"
          else
            x["type"] = "新鲜事"
        end
        x["time"] = get_strftime(micro_post.post_time)
        x["pics"] = micro_post.pic.split(',') if micro_post.pic
        x["peo_num"] = micro_post.engage_people
        micro_posts_array << x
      end
    end
    return micro_posts_array
  end

  def get_engaged_people micropost_id

  end

end