discourse/lib/twitter_api.rb

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# frozen_string_literal: true
# lightweight Twitter api calls
class TwitterApi
class << self
include ActionView::Helpers::NumberHelper
BASE_URL = "https://api.twitter.com"
def prettify_tweet(tweet)
text = tweet["full_text"].dup
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" || m["type"] == "animated_gif"
video_to_display =
m["video_info"]["variants"]
.select { |v| v["content_type"] == "video/mp4" }
.sort { |v| v["bitrate"] }
.last # choose highest bitrate
if video_to_display && url = video_to_display["url"]
width = m["sizes"]["large"]["w"]
height = m["sizes"]["large"]["h"]
attributes =
if m["type"] == "animated_gif"
%w[playsinline loop muted autoplay disableRemotePlayback disablePictureInPicture]
else
%w[controls playsinline]
end.join(" ")
result << <<~HTML
<div class='tweet-images'>
<div class='aspect-image-full-size' style='--aspect-ratio:#{width}/#{height};'>
<video class='tweet-video' #{attributes}
width='#{width}'
height='#{height}'
poster='#{m["media_url_https"]}'>
<source src='#{url}' type="video/mp4">
</video>
</div>
</div>
HTML
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 tweet_for(id)
JSON.parse(twitter_get(tweet_uri_for(id)))
end
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alias_method :status, :tweet_for
def twitter_credentials_missing?
consumer_key.blank? || consumer_secret.blank?
end
protected
def link_handles_in(text)
text
.gsub(/(?:^|\s)@\w+/) do |match|
whitespace = match[0] == " " ? " " : ""
handle = match.strip[1..]
"#{whitespace}<a href='https://twitter.com/#{handle}' target='_blank'>@#{handle}</a>"
end
.strip
end
def link_hashtags_in(text)
text
.gsub(/(?:^|\s)#\w+/) do |match|
whitespace = match[0] == " " ? " " : ""
hashtag = match.strip[1..]
"#{whitespace}<a href='https://twitter.com/search?q=%23#{hashtag}' target='_blank'>##{hashtag}</a>"
end
.strip
end
def tweet_uri_for(id)
URI.parse "#{BASE_URL}/1.1/statuses/show.json?id=#{id}&tweet_mode=extended"
end
def twitter_get(uri)
request = Net::HTTP::Get.new(uri)
request.add_field "Authorization", "Bearer #{bearer_token}"
response = http(uri).request(request)
if response.kind_of?(Net::HTTPTooManyRequests)
Rails.logger.warn("Twitter API rate limit has been reached")
end
response.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(
"#{UrlHelper.encode_component(consumer_key)}:#{UrlHelper.encode_component(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