113 lines
3.1 KiB
Ruby
113 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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class Services::Twitter < Service
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include Rails.application.routes.url_helpers
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MAX_CHARACTERS = 280
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SHORTENED_URL_LENGTH = 23
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LINK_PATTERN = %r{https?://\S+}
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def provider
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"twitter"
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end
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def post post, url=''
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logger.debug "event=post_to_service type=twitter sender_id=#{user_id} post=#{post.guid}"
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tweet = attempt_post post
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post.tweet_id = tweet.id
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post.save
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end
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def profile_photo_url
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client.user(nickname).profile_image_url_https "original"
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end
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def post_opts(post)
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{tweet_id: post.tweet_id} if post.tweet_id.present?
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end
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def delete_from_service(opts)
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logger.debug "event=delete_from_service type=twitter sender_id=#{user_id} tweet_id=#{opts[:tweet_id]}"
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delete_from_twitter(opts[:tweet_id])
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end
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private
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def client
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@client ||= Twitter::REST::Client.new do |config|
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config.consumer_key = AppConfig.services.twitter.key
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config.consumer_secret = AppConfig.services.twitter.secret
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config.access_token = access_token
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config.access_token_secret = access_secret
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end
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end
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def attempt_post post, retry_count=0
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message = build_twitter_post post, retry_count
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client.update message
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rescue Twitter::Error::Forbidden => e
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if ! e.message.include? 'is over 140' || retry_count == 20
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raise e
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else
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attempt_post post, retry_count+1
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end
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end
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def build_twitter_post post, retry_count=0
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max_characters = MAX_CHARACTERS - retry_count
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post_text = post.message.plain_text_without_markdown
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truncate_and_add_post_link post, post_text, max_characters
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end
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def truncate_and_add_post_link post, post_text, max_characters
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return post_text unless needs_link? post, post_text, max_characters
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post_url = short_post_url(
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post,
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protocol: AppConfig.pod_uri.scheme,
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host: AppConfig.pod_uri.authority
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)
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truncated_text = post_text.truncate max_characters - SHORTENED_URL_LENGTH - 1
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truncated_text = restore_truncated_url truncated_text, post_text, max_characters
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"#{truncated_text} #{post_url}"
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end
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def needs_link? post, post_text, max_characters
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adjust_length_for_urls(post_text) > max_characters || post.photos.any?
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end
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def adjust_length_for_urls post_text
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real_length = post_text.length
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URI.extract(post_text, ['http','https']) do |url|
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# add or subtract from real length - urls for tweets are always
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# shortened to SHORTENED_URL_LENGTH
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if url.length >= SHORTENED_URL_LENGTH
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real_length -= url.length - SHORTENED_URL_LENGTH
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else
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real_length += SHORTENED_URL_LENGTH - url.length
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end
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end
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real_length
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end
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def restore_truncated_url truncated_text, post_text, max_characters
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return truncated_text if truncated_text !~ /#{LINK_PATTERN}\Z/
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url = post_text.match(LINK_PATTERN, truncated_text.rindex('http'))[0]
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truncated_text = post_text.truncate(
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max_characters - SHORTENED_URL_LENGTH + 2,
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separator: ' ', omission: ''
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)
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"#{truncated_text} #{url} ..."
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end
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def delete_from_twitter service_post_id
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client.destroy_status service_post_id
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end
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end
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