require 'json'
require 'cgi'
require 'time'
require_relative 'create_title.rb'

class SocialcastMessage

  DEFAULT_CATEGORY = "Socialcast Import"
  DEFAULT_TAG = "socialcast-import"
  TAGS_AND_CATEGORIES = {
    "somegroupname" => {
      category: "Apple Stems",
      tags: ["waxy", "tough"]
    },
    "someothergroupname" => {
      category: "Orange Peels",
      tags: ["oily"]
    }
   }

   def initialize message_json
     @parsed_json = JSON.parse message_json
   end

   def topic
     topic = {}
     topic[:id] = @parsed_json['id']
     topic[:author_id] = @parsed_json['user']['id']
     topic[:title] = title
     topic[:raw] = @parsed_json['body']
     topic[:created_at] = Time.parse @parsed_json['created_at']
     topic[:tags] = tags
     topic[:category] = category
     topic
   end

   def title
     CreateTitle.from_body @parsed_json['body']
   end

   def tags
     tags = []
     if group
       if TAGS_AND_CATEGORIES[group]
         tags = TAGS_AND_CATEGORIES[group][:tags]
       else
         tags << group
       end
     end
     tags << DEFAULT_TAG
     tags
   end


   def category
     category = DEFAULT_CATEGORY
     if group && TAGS_AND_CATEGORIES[group]
       category = TAGS_AND_CATEGORIES[group][:category]
     end
     category
   end

   def group
     @parsed_json['group']['groupname'].downcase if @parsed_json['group'] && @parsed_json['group']['groupname']
   end

   def url
     @parsed_json['url']
   end

   def message_type
     @parsed_json['message_type']
   end

   def replies
     posts = []
     comments = @parsed_json['comments']
     comments.each do |comment|
       posts << post_from_comment(comment)
     end
     posts
   end

   def post_from_comment(comment)
     post = {}
     post[:id] = comment['id']
     post[:author_id] = comment['user']['id']
     post[:raw] = comment['text']
     post[:created_at] = Time.parse comment['created_at']
     post
   end

   private

   def unescape html
     return nil unless html
     CGI.unescapeHTML html
   end
end