discourse/lib/twitter_api.rb

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# lightweight Twitter api calls
class TwitterApi
class << self
include ActionView::Helpers::NumberHelper
def prettify_tweet(tweet)
text = tweet["full_text"].dup
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if (entities = tweet["entities"]) && (urls = entities["urls"])
urls.each do |url|
text.gsub!(url["url"], "<a target='_blank' href='#{url["expanded_url"]}'>#{url["display_url"]}</a>")
end
end
text = link_hashtags_in link_handles_in text
result = Rinku.auto_link(text, :all, 'target="_blank"').to_s
if tweet['extended_entities'] && media = tweet['extended_entities']['media']
media.each do |m|
if m['type'] == 'photo'
if large = m['sizes']['large']
result << "<div class='tweet-images'><img class='tweet-image' src='#{m['media_url_https']}' width='#{large['w']}' height='#{large['h']}'></div>"
end
elsif m['type'] == 'video'
if large = m['sizes']['large']
result << "<div class='tweet-images'><iframe class='tweet-video' src='https://twitter.com/i/videos/#{tweet['id_str']}' width='#{large['w']}' height='#{large['h']}' frameborder='0' allowfullscreen></iframe></div>"
end
end
end
end
result
end
def prettify_number(count)
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number_to_human(count, format: '%n%u', precision: 2, units: { thousand: 'K', million: 'M', billion: 'B' })
end
def user_timeline(screen_name)
JSON.parse(twitter_get(user_timeline_uri_for screen_name))
end
def tweet_for(id)
JSON.parse(twitter_get(tweet_uri_for id))
end
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alias_method :status, :tweet_for
def raw_tweet_for(id)
twitter_get(tweet_uri_for id)
end
def twitter_credentials_missing?
consumer_key.blank? || consumer_secret.blank?
end
protected
def link_handles_in(text)
text.scan(/(?:^|\s)@(\w+)/).flatten.uniq.each do |handle|
text.gsub!(/(?:^|\s)@#{handle}/, [
" <a href='https://twitter.com/#{handle}' target='_blank'>",
"@#{handle}",
"</a>"
].join)
end
text.strip
end
def link_hashtags_in(text)
text.scan(/(?:^|\s)#(\w+)/).flatten.uniq.each do |hashtag|
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text.gsub!(/(?:^|\s)##{hashtag}/, [
" <a href='https://twitter.com/search?q=%23#{hashtag}' ",
"target='_blank'>",
"##{hashtag}",
"</a>"
].join)
end
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text.strip
end
def user_timeline_uri_for(screen_name)
URI.parse "#{BASE_URL}/1.1/statuses/user_timeline.json?screen_name=#{screen_name}&count=50&include_rts=false&exclude_replies=true"
end
def tweet_uri_for(id)
URI.parse "#{BASE_URL}/1.1/statuses/show.json?id=#{id}&tweet_mode=extended"
end
unless defined? BASE_URL
BASE_URL = 'https://api.twitter.com'.freeze
end
def twitter_get(uri)
request = Net::HTTP::Get.new(uri)
request.add_field 'Authorization', "Bearer #{bearer_token}"
http(uri).request(request).body
end
def authorization
request = Net::HTTP::Post.new(auth_uri)
request.add_field 'Authorization',
"Basic #{bearer_token_credentials}"
request.add_field 'Content-Type',
'application/x-www-form-urlencoded;charset=UTF-8'
request.set_form_data 'grant_type' => 'client_credentials'
http(auth_uri).request(request).body
end
def bearer_token
@access_token ||= JSON.parse(authorization).fetch('access_token')
end
def bearer_token_credentials
Base64.strict_encode64(
"#{URI::encode(consumer_key)}:#{URI::encode(consumer_secret)}"
)
end
def auth_uri
URI.parse "#{BASE_URL}/oauth2/token"
end
def http(uri)
Net::HTTP.new(uri.host, uri.port).tap { |http| http.use_ssl = true }
end
def consumer_key
SiteSetting.twitter_consumer_key
end
def consumer_secret
SiteSetting.twitter_consumer_secret
end
end
end