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#!/usr/bin/env ruby
require "rubygems"
require "highline/import"
require "flareshow"
require "erb"
require "time"
require "open-uri"

class ShareflowExporter

  def initialize(domain, username, password)
    @domain = domain
    @username = username
    @password = password
    @flow_template = load_template
  end

  def export
    Flareshow::Service.configure(@domain)
    Flareshow::Service.authenticate(@username, @password)
    flows = Flow.find(:limit => 300)
    cleanup_output_directory
    flows.each {|flow| export_flow(flow)}
  end

  def export_flow(flow)
    puts "*"*80
    puts "exporting flow: #{flow.name}"
    puts "*"*80
    has_more_posts = true
    offset = 0
    posts = []
    while(has_more_posts)
      retrieved_posts = Post.find(:offset => offset, :limit => 30, :flow_id => flow.id)
      has_more_posts = false if !retrieved_posts || retrieved_posts.size == 0
      if retrieved_posts
        posts.concat(retrieved_posts)
        offset += retrieved_posts.size
      end
    end
    File.open(output_file_for_flow(flow), "w") { |f|
      f << @flow_template.result(binding)
    }
  end

  def export_post(post)
    puts post.content
  end

  def cleanup_output_directory
    FileUtils.rm_rf("#{@domain}")
  end

  def localized_original_url_for_file(file,key)
    puts "downloading #{file.original_url}?pk=#{key}"
    f = open("#{file.original_url}?pk=#{key}")
    path = File.join(output_path_for_files, "#{file.id[0..5]}_#{file.file_name}")
    File.open(path, "w") do |ff|
      ff << f.read
    end
    path.gsub(/#{@domain}\//,"")
  rescue
    puts "*"*80
    puts "error downloading file #{file.name}"
    puts "*"*80
  end

  def localized_thumbnail_url_for_file(file, key)
    download_path = "#{file.thumbnail_url}"
    if download_path.match(/\?/)
      download_path += "&pk=#{key}"
    else
      download_path += "?pk=#{key}"
    end
    puts "downloading #{download_path}"
    f = open("#{download_path}")
    FileUtils.mkdir_p("#{output_path_for_files}/thumbs")
    path = File.join(output_path_for_files, "thumbs", "#{file.id}_thumb.jpg")
    File.open(path, "w") do |ff|
      ff << f.read
    end
    path.gsub(/#{@domain}\//,"")
  rescue
    puts "*"*80
    puts "error downloading thumbnail for #{file.name}"
    puts "*"*80
  end

  def output_path_for_files
    path = "#{@domain}/files"
    FileUtils.mkdir_p(path)
    path
  end

  def output_file_for_flow(flow)
    FileUtils.mkdir_p("#{@domain}")
    File.join(@domain, flow.name.gsub(/["'<>\s]/,"_") + "_#{flow.id[0..5]}.html")
  end

  def load_template
    ERB.new(DATA.read)
  end

  def pretty_date(date=Time.now)
    date = Time.parse(date.to_s)
    date.getlocal.strftime("%b %d, %Y ~ %l:%M %p")
  end
end

if (__FILE__ == $0)
  domain   = ask("Enter the domain? ")
  username = ask("Enter the username? ")
  password = ask("Enter the password? ")
  exporter = ShareflowExporter.new(domain, username, password)
  exporter.export
end

###############################
## BEGIN TEMPLATE FOR OUTPUT ##
###############################
__END__
<html>
  <head>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
    <title><%= flow.name %></title>
    <style type="text/css" media="screen">
      * {font-family:"helvetica neue", helvetica, arial, sans-serif;}

      a, a:hover, a:active, a:visited {text-decoration:none;}

      body{
        background:#E3F4F4;
      }

      .wrapper{
        width:800px;
        margin:auto;
      }

      h1 {
        color:#103d4a;
      }

      /* ================== */
      /* = Shareflow Post = */
      /* ================== */
      .shareflow_post{
        position:relative;
        margin-bottom:10px;
        background:#fff;
        -moz-border-radius:4px;
        -webkit-border-radius:4px;
        padding:5px;
        -moz-box-shadow:2px 2px 6px #B3C0C3;
        -webkit-box-shadow:2px 2px 6px #B3C0C3;
      }
        .shareflow_post .shareflow_post {
          -moz-box-shadow:0px 0px 0px #B3C0C3;
          -webkit-box-shadow:0px 0px 0px #B3C0C3;
          margin-bottom:5px;
        }
        .shareflow_post *, .shareflow_post {
          font-size:12px;
        }
        .shareflow_post .shareflow_avatar{
          position:absolute;
          top:5px; left:5px;
          -moz-border-radius:4px;
          -webkit-border-radius:4px;
          height:50px;
          width:50px;
        }
        .shareflow_post .post_body{
          min-height:34px;
          margin-left:60px;
        }
        .shareflow_post .post_title{
          margin-left:60px;
          font-size:12px;
          font-family:"Trebuchet MS";
          font-style:italic;
        }
          .shareflow_post .post_title a,
          .older_comments_link a{
            color:#ab1921; font-size:12px;
          }
          .older_comments_link {padding-left:5px;}
        .comments {
          margin-left:54px;
        }
        .file_thumbnail_link{border:0px solid #fff;}
        .file_thumbnail{margin:10px; display:block; float:left;
          -moz-box-shadow:2px 2px 6px #B3C0C3;
          -webkit-box-shadow:2px 2px 6px #B3C0C3;
          border:0px solid #fff;
        }
        .file_icon{margin:10px; display:block; float:left;
          border:0px solid #fff;
        }
    </style>
  </head>
  <body>
    <h1><%= flow.name %></h1>
    <% posts.each do |post| %>
      <div class="shareflow_post">
        <div class="shareflow_avatar" style="background:url(<%= post.user.avatar_url %>)">
        </div>
        <div class="post_title">
          <%= post.user_full_name %> &mdash; <%= pretty_date(post.created_at) %>
        </div>
        <div class="post_body">
          <%= post.content.to_s %>
          <div class="files" style="clear:both">
            <% post.files.each do |f| %>
              <a href="<%=localized_original_url_for_file(f, post.post_key)%>" class="file_thumbnail_link" target="_blank" title="<%=f.file_name%>">
                <% if f.width && f.height %>
                <img src="<%=localized_thumbnail_url_for_file(f, post.post_key)%>" class="file_thumbnail" height="80" width="80" />
                <% else %>
                <img src="<%=localized_thumbnail_url_for_file(f, post.post_key)%>" height="80" width="80" class="file_icon" />
                <% end %>
              </a>
            <% end %>
            <div style="clear:both"></div>
          </div>
        </div>
          <div class="comments">
            <% post.comments.each do |comment| %>
            <div class="shareflow_post">
              <div class="shareflow_avatar" style="background:url(<%= comment.user.avatar_url %>)">
              </div>
              <div class="post_title">
                <%= comment.user_full_name %> &mdash; <%= pretty_date(comment.created_at) %>
              </div>
              <div class="post_body">
                <%= comment.content.to_s %>
                <div class="files" style="clear:both">
                  <% comment.files.each do |f| %>
                    <a href="<%=localized_original_url_for_file(f, post.post_key)%>" class="file_thumbnail_link" target="_blank" title="<%=f.file_name%>">
                      <% if f.width && f.height %>
                      <img src="<%=localized_thumbnail_url_for_file(f, post.post_key)%>" class="file_thumbnail" height="80" width="80" />
                      <% else %>
                      <img src="<%=localized_thumbnail_url_for_file(f, post.post_key)%>" height="80" width="80" class="file_icon" />
                      <% end %>
                    </a>
                  <% end %>
                  <div style="clear:both"></div>
                </div>
              </div>
            </div>
            <% end %>
          </div>
      </div>
    <% end %>
  </body>
</html>