require 'thor'
require 't/printable'
require 't/rcfile'
require 't/requestable'
require 't/utils'

module T
  class Stream < Thor
    include T::Printable
    include T::Requestable
    include T::Utils

    TWEET_HEADINGS_FORMATTING = [
      '%-18s',  # Add padding to maximum length of a Tweet ID
      '%-12s',  # Add padding to length of a timestamp formatted with ls_formatted_time
      '%-20s',  # Add padding to maximum length of a Twitter screen name
      '%s',     # Last element does not need special formatting
    ].freeze

    check_unknown_options!

    def initialize(*)
      @rcfile = T::RCFile.instance
      super
    end

    desc 'all', 'Stream a random sample of all Tweets (Control-C to stop)'
    method_option 'csv', aliases: '-c', type: :boolean, desc: 'Output in CSV format.'
    method_option 'decode_uris', aliases: '-d', type: :boolean, desc: 'Decodes t.co URLs into their original form.'
    method_option 'long', aliases: '-l', type: :boolean, desc: 'Output in long format.'
    def all
      streaming_client.before_request do
        if options['csv']
          require 'csv'
          say TWEET_HEADINGS.to_csv
        elsif options['long'] && STDOUT.tty?
          headings = Array.new(TWEET_HEADINGS.size) do |index|
            TWEET_HEADINGS_FORMATTING[index] % TWEET_HEADINGS[index]
          end
          print_table([headings])
        end
      end
      streaming_client.sample do |tweet|
        next unless tweet.is_a?(Twitter::Tweet)
        if options['csv']
          print_csv_tweet(tweet)
        elsif options['long']
          array = build_long_tweet(tweet).each_with_index.collect do |element, index|
            TWEET_HEADINGS_FORMATTING[index] % element
          end
          print_table([array], truncate: STDOUT.tty?)
        else
          print_message(tweet.user.screen_name, tweet.text)
        end
      end
    end

    desc 'list [USER/]LIST', 'Stream a timeline for members of the specified list (Control-C to stop)'
    method_option 'csv', aliases: '-c', type: :boolean, desc: 'Output in CSV format.'
    method_option 'decode_uris', aliases: '-d', type: :boolean, desc: 'Decodes t.co URLs into their original form.'
    method_option 'id', aliases: '-i', type: :boolean, desc: 'Specify user via ID instead of screen name.'
    method_option 'long', aliases: '-l', type: :boolean, desc: 'Output in long format.'
    method_option 'reverse', aliases: '-r', type: :boolean, desc: 'Reverse the order of the sort.'
    def list(user_list)
      owner, list_name = extract_owner(user_list, options)
      require 't/list'
      streaming_client.before_request do
        list = T::List.new
        list.options = list.options.merge(options)
        list.options = list.options.merge(reverse: true)
        list.options = list.options.merge(format: TWEET_HEADINGS_FORMATTING)
        list.timeline(user_list)
      end
      user_ids = client.list_members(owner, list_name).collect(&:id)
      streaming_client.filter(follow: user_ids.join(',')) do |tweet|
        next unless tweet.is_a?(Twitter::Tweet)
        if options['csv']
          print_csv_tweet(tweet)
        elsif options['long']
          array = build_long_tweet(tweet).each_with_index.collect do |element, index|
            TWEET_HEADINGS_FORMATTING[index] % element
          end
          print_table([array], truncate: STDOUT.tty?)
        else
          print_message(tweet.user.screen_name, tweet.text)
        end
      end
    end
    map %w(tl) => :timeline

    desc 'matrix', 'Unfortunately, no one can be told what the Matrix is. You have to see it for yourself.'
    def matrix
      require 't/cli'
      streaming_client.before_request do
        cli = T::CLI.new
        cli.matrix
      end
      streaming_client.sample(language: 'ja') do |tweet|
        next unless tweet.is_a?(Twitter::Tweet)
        say(tweet.text.gsub(/[^\u3000\u3040-\u309f]/, '').reverse, [:bold, :green, :on_black], false)
      end
    end

    desc 'search KEYWORD [KEYWORD...]', 'Stream Tweets that contain specified keywords, joined with logical ORs (Control-C to stop)'
    method_option 'csv', aliases: '-c', type: :boolean, desc: 'Output in CSV format.'
    method_option 'decode_uris', aliases: '-d', type: :boolean, desc: 'Decodes t.co URLs into their original form.'
    method_option 'long', aliases: '-l', type: :boolean, desc: 'Output in long format.'
    def search(keyword, *keywords)
      keywords.unshift(keyword)
      require 't/search'
      streaming_client.before_request do
        search = T::Search.new
        search.options = search.options.merge(options)
        search.options = search.options.merge(reverse: true)
        search.options = search.options.merge(format: TWEET_HEADINGS_FORMATTING)
        search.all(keywords.join(' OR '))
      end
      streaming_client.filter(track: keywords.join(',')) do |tweet|
        next unless tweet.is_a?(Twitter::Tweet)
        if options['csv']
          print_csv_tweet(tweet)
        elsif options['long']
          array = build_long_tweet(tweet).each_with_index.collect do |element, index|
            TWEET_HEADINGS_FORMATTING[index] % element
          end
          print_table([array], truncate: STDOUT.tty?)
        else
          print_message(tweet.user.screen_name, tweet.text)
        end
      end
    end

    desc 'timeline', 'Stream your timeline (Control-C to stop)'
    method_option 'csv', aliases: '-c', type: :boolean, desc: 'Output in CSV format.'
    method_option 'decode_uris', aliases: '-d', type: :boolean, desc: 'Decodes t.co URLs into their original form.'
    method_option 'long', aliases: '-l', type: :boolean, desc: 'Output in long format.'
    def timeline
      require 't/cli'
      streaming_client.before_request do
        cli = T::CLI.new
        cli.options = cli.options.merge(options)
        cli.options = cli.options.merge(reverse: true)
        cli.options = cli.options.merge(format: TWEET_HEADINGS_FORMATTING)
        cli.timeline
      end
      streaming_client.user do |tweet|
        next unless tweet.is_a?(Twitter::Tweet)
        if options['csv']
          print_csv_tweet(tweet)
        elsif options['long']
          array = build_long_tweet(tweet).each_with_index.collect do |element, index|
            TWEET_HEADINGS_FORMATTING[index] % element
          end
          print_table([array], truncate: STDOUT.tty?)
        else
          print_message(tweet.user.screen_name, tweet.text)
        end
      end
    end

    desc 'users USER_ID [USER_ID...]', 'Stream Tweets either from or in reply to specified users (Control-C to stop)'
    method_option 'csv', aliases: '-c', type: :boolean, desc: 'Output in CSV format.'
    method_option 'decode_uris', aliases: '-d', type: :boolean, desc: 'Decodes t.co URLs into their original form.'
    method_option 'long', aliases: '-l', type: :boolean, desc: 'Output in long format.'
    def users(user_id, *user_ids)
      user_ids.unshift(user_id)
      user_ids.collect!(&:to_i)
      streaming_client.before_request do
        if options['csv']
          require 'csv'
          say TWEET_HEADINGS.to_csv
        elsif options['long'] && STDOUT.tty?
          headings = Array.new(TWEET_HEADINGS.size) do |index|
            TWEET_HEADINGS_FORMATTING[index] % TWEET_HEADINGS[index]
          end
          print_table([headings])
        end
      end
      streaming_client.filter(follow: user_ids.join(',')) do |tweet|
        next unless tweet.is_a?(Twitter::Tweet)
        if options['csv']
          print_csv_tweet(tweet)
        elsif options['long']
          array = build_long_tweet(tweet).each_with_index.collect do |element, index|
            TWEET_HEADINGS_FORMATTING[index] % element
          end
          print_table([array], truncate: STDOUT.tty?)
        else
          print_message(tweet.user.screen_name, tweet.text)
        end
      end
    end

  private

    def streaming_client
      return @streaming_client if @streaming_client
      @rcfile.path = options['profile'] if options['profile']
      @streaming_client = Twitter::Streaming::Client.new do |config|
        config.consumer_key        = @rcfile.active_consumer_key
        config.consumer_secret     = @rcfile.active_consumer_secret
        config.access_token        = @rcfile.active_token
        config.access_token_secret = @rcfile.active_secret
      end
    end
  end
end