class TrumpcareTracker

# File lib/trumpcare_tracker.rb, line 33
def initialize(user, screen_name, alt_screen_name = '')
  @audited         = false
  @requests        = 0
  @user            = user
  @screen_name     = screen_name.to_s
  @alt_screen_name = alt_screen_name.to_s
end

# File lib/trumpcare_tracker.rb, line 21
def self.percentage(numerator, denominator)
  (ratio(numerator, denominator) * 100).round(2)
end

# File lib/trumpcare_tracker.rb, line 16
def self.ratio(numerator, denominator)
  return 0.0 if denominator.zero?
  (numerator / denominator.to_f).round(4)
end

# File lib/trumpcare_tracker.rb, line 29
def self.russia_keyword_regex
  /(russia|comey|sessions|mueller|fbi|flynn|obstruction of justice|collusion|putin|kremlin|kislyak|attorney general| intelligence committee|rosenstein|witch hunt|impeach|perjur|under oath)/
end

# File lib/trumpcare_tracker.rb, line 25
def self.trumpcare_keyword_regex
  /(ahca|trumpcare|healthcare|health|care|drug|medic|prescription|vaccin|obamacare|cbo|premiums|insurance|deductibles|aca.| aca |aca |o-care|a.h.c.a|a.c.a|pre-existing conditions|hhs|showusthebill|show us the bill|opioid)/
end

# File lib/trumpcare_tracker.rb, line 93
def age_of_tweet_in_days(tweet)
  (Time.now - tweet.created_at) / 86_400
end

# File lib/trumpcare_tracker.rb, line 134
def audit
  filter_by_keywords unless audited?
  @audited = true
end

# File lib/trumpcare_tracker.rb, line 41
def audited?
  @audited
end

# File lib/trumpcare_tracker.rb, line 46
def client
  @_client ||= Twitter::REST::Client.new do |config|
    config.consumer_key        = CONSUMER_KEY
    config.consumer_secret     = CONSUMER_SECRET
    config.access_token        = ACCESS_TOKEN
    config.access_token_secret = ACCESS_TOKEN_SECRET
  end
end

# File lib/trumpcare_tracker.rb, line 70
def fetch_older_tweets(timeline, screen_name)
  return timeline if age_of_tweet_in_days(timeline.last) > 7
  @requests += 1
  first_count = timeline.count
  timeline += client.user_timeline(
    screen_name,
    tweet_mode: 'extended',
    max_id: timeline.last.id - 1,
    count: 200
  )
  second_count = timeline.count
  return timeline if second_count == first_count
  fetch_older_tweets(timeline, screen_name)
end

# File lib/trumpcare_tracker.rb, line 60
def fetch_timeline(screen_name)
  return [] if screen_name.to_s.empty?
  @requests += 1
  timeline = client.user_timeline(screen_name, tweet_mode: 'extended', count: 200)
  return timeline if timeline.empty?
  timeline = fetch_older_tweets(timeline, screen_name)
  puts "Fetched #{screen_name}'s timeline"
  timeline
end

# File lib/trumpcare_tracker.rb, line 109
def fetch_tweet_with_full_text(tweet)
  @requests += 1
  client.status(tweet.id, tweet_mode: 'extended')
end

# File lib/trumpcare_tracker.rb, line 97
def filter_by_keywords
  recent_tweets.each do |tweet|
    if tweet_match?(tweet, self.class.trumpcare_keyword_regex)
      stats[:trumpcare_tweets] << tweet
    elsif tweet_match?(tweet, self.class.russia_keyword_regex)
      stats[:russia_tweets] << tweet
    end
  end

  stats
end

# File lib/trumpcare_tracker.rb, line 86
def recent_tweets
  @_recent_tweets ||= timeline.each_with_object([]) do |tweet, memo|
    age_of_tweet_in_days = (Time.now.to_date - tweet.created_at.to_date).to_i
    memo << tweet if age_of_tweet_in_days <= 7
  end
end

# File lib/trumpcare_tracker.rb, line 147
def recent_tweets_count
  @_recent_tweets_count ||= recent_tweets.count
end

# File lib/trumpcare_tracker.rb, line 130
def russia_tweets
  stats[:russia_tweets]
end

# File lib/trumpcare_tracker.rb, line 162
def russia_tweets_count
  @_russia_tweets_count ||= russia_tweets.count
end

# File lib/trumpcare_tracker.rb, line 170
def russia_tweets_percentage
  self.class.percentage(russia_tweets_count, recent_tweets_count)
end

# File lib/trumpcare_tracker.rb, line 151
def stats
  @_stats ||= {
    trumpcare_tweets: [],
    russia_tweets: []
  }
end

# File lib/trumpcare_tracker.rb, line 55
def timeline
  @_timeline ||= (fetch_timeline(screen_name) + fetch_timeline(alt_screen_name))
end

# File lib/trumpcare_tracker.rb, line 178
def to_h
  {
    senator: user,
    official_user_name: screen_name,
    alt_user_name: alt_screen_name,
    tweets_in_last_seven_days: recent_tweets.count,
    trumpcare_tweet_count: trumpcare_tweets.count,
    tct_percentage: trumpcare_tweets_percentage,
    russia_tweet_count: russia_tweets.count,
    rt_percentage: russia_tweets_percentage,
    tct_to_rt_ratio: trumpcare_to_russia_tweets_ratio,
    trumpcare_tweet_urls: trumpcare_tweets.map { |tweet| tweet.uri.to_s },
    russia_tweet_urls: russia_tweets.map { |tweet| tweet.uri.to_s }
  }
end

# File lib/trumpcare_tracker.rb, line 139
def to_s
  audit unless audited?
  @_to_s ||= "@#{screen_name}'s last 7 days\n#{recent_tweets_count} tweets\n"\
    "#{trumpcare_tweets_count} TrumpCare - #{trumpcare_tweets_percentage}%\n"\
    "#{russia_tweets_count} Russia - #{russia_tweets_percentage}%\n"\
    "#{trumpcare_to_russia_tweets_ratio} TrumpCare tweets for every Russia tweet"
end

# File lib/trumpcare_tracker.rb, line 194
def to_tweet(options = {})
  @requests += 1
  client.update(".#{self}", options)
end

# File lib/trumpcare_tracker.rb, line 174
def trumpcare_to_russia_tweets_ratio
  self.class.ratio(trumpcare_tweets_count, russia_tweets_count)
end

# File lib/trumpcare_tracker.rb, line 126
def trumpcare_tweets
  stats[:trumpcare_tweets]
end

# File lib/trumpcare_tracker.rb, line 158
def trumpcare_tweets_count
  @_trumpcare_tweets_count ||= trumpcare_tweets.count
end

# File lib/trumpcare_tracker.rb, line 166
def trumpcare_tweets_percentage
  self.class.percentage(trumpcare_tweets_count, recent_tweets_count)
end

# File lib/trumpcare_tracker.rb, line 114
def tweet_match?(tweet, regex)
  full_text = tweet.attrs[:full_text]
  if full_text.downcase.match?(regex)
    true
  elsif tweet.quoted_tweet?
    quoted_tweet = fetch_tweet_with_full_text(tweet.quoted_tweet)
    tweet_match?(quoted_tweet, regex)
  else
    false
  end
end