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feed.rb
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feed.rb
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class Feed < ApplicationRecord
has_many :subscriptions
has_many :podcast_subscriptions
has_many :entries
has_many :users, through: :subscriptions
has_many :unread_entries
has_many :starred_entries
has_many :feed_stats
has_many :discovered_feeds, foreign_key: :site_url, primary_key: :site_url
has_many :taggings
has_many :tags, through: :taggings
has_one :favicon, foreign_key: :host, primary_key: :host
has_one :newsletter_sender
before_create :set_host
before_save :set_hubs
after_create :refresh_favicon
after_commit :web_sub_subscribe, on: :create
after_commit :update_youtube_videos, on: :create
attribute :crawl_data, CrawlDataType.new
attr_accessor :count, :tags
attr_readonly :feed_url
after_initialize :default_values
enum feed_type: {xml: 0, newsletter: 1, twitter: 2, twitter_home: 3, pages: 4}
store :settings, accessors: [:custom_icon, :current_feed_url, :custom_icon_format], coder: JsonConverter
def twitter_user?
twitter_user.present?
end
def twitter_user
@twitter_user ||= Twitter::User.new(options["twitter_user"].deep_symbolize_keys)
rescue
nil
end
def twitter_feed?
twitter? || twitter_home?
end
def tag_with_params(params, user)
tags = []
tags.concat params[:tag_id].values if params[:tag_id]
tags.concat params[:tag_name] if params[:tag_name]
tags = tags.join(",")
tag(tags, user)
end
def tag(names, user, delete_existing = true)
taggings = []
if delete_existing
Tagging.where(user_id: user, feed_id: id).destroy_all
end
names = names.split(",") if names.is_a?(String)
names.map do |name|
name = name.strip
unless name.blank?
tag = Tag.where(name: name.strip).first_or_create!
taggings << self.taggings.where(user: user, tag: tag).first_or_create!
end
end
taggings
end
def icons
{
custom_icon => "round",
options.safe_dig("image", "url") => "square",
options.safe_dig("json_feed", "icon") => "square",
options.safe_dig("json_feed", "author", "avatar") => "round",
}
end
def icon
base = icons.keys.find { !_1.nil? }
return nil if base.nil?
feed_relative_url(base)
end
def default_icon_format
base = icons.keys.find { !_1.nil? }
return nil if base.nil?
icons[base]
end
def self.create_from_parsed_feed(parsed_feed)
record = parsed_feed.to_feed
create_with(record).create_or_find_by!(feed_url: record[:feed_url]).tap do |new_feed|
parsed_feed.entries.each do |parsed_entry|
entry_hash = parsed_entry.to_entry
new_feed.entries.create_with(entry_hash).create_or_find_by(public_id: entry_hash[:public_id])
end
# for micropost feeds
if parsed_feed.entries.filter_map(&:title).blank?
new_feed.update!(custom_icon_format: "round")
end
end
end
def check
Feedkit::Request.download(feed_url)
end
def self.include_user_title
feeds = select("feeds.*, subscriptions.title AS user_title")
feeds.map do |feed|
if feed.user_title
feed.override_title(feed.user_title)
end
feed.title ||= "Untitled"
feed
end
feeds.natural_sort_by { |feed| feed.title }
end
def string_id
id.to_s
end
def set_host
self.host = Addressable::URI.heuristic_parse(site_url)&.host&.downcase
rescue
Rails.logger.info { "Failed to set host for feed: %s" % site_url }
end
def override_title(title)
@original_title = self.title
self.title = title
end
def original_title
@original_title || title
end
def priority_refresh(user = nil)
if twitter_feed?
return
else
FeedCrawler::DownloaderCritical.perform_async(id, feed_url, subscriptions_count, crawl_data.to_h)
end
end
def list_unsubscribe
options.safe_dig("email_headers", "List-Unsubscribe")
end
def self.search(url)
where("feed_url ILIKE :query", query: "%#{url}%")
end
def json_feed
options&.respond_to?(:dig) && options&.safe_dig("json_feed")
end
def has_subscribers?
subscriptions_count > 0
end
def web_sub_secret
Digest::SHA256.hexdigest([id, Rails.application.secret_key_base].join("-"))
end
def web_sub_callback(debug: false)
uri = URI(ENV["PUSH_URL"])
signature = OpenSSL::HMAC.hexdigest("sha256", web_sub_secret, id.to_s)
params = {}
params[:debug] = true if debug
Rails.application.routes.url_helpers.web_sub_verify_url(id, web_sub_callback_signature, protocol: uri.scheme, host: uri.host, params: params)
end
def web_sub_callback_signature
OpenSSL::HMAC.hexdigest("sha256", web_sub_secret, id.to_s)
end
def web_sub_subscribe
WebSub::Subscribe.perform_async(id)
end
def hubs
if self[:hubs].blank? && !known_hubs.blank?
known_hubs
else
self[:hubs]
end
end
def self_url
if youtube_channel_id
"https://www.youtube.com/xml/feeds/videos.xml?channel_id=#{youtube_channel_id}"
else
self[:self_url]
end
end
def known_hubs
if youtube_channel_id
["https://pubsubhubbub.appspot.com"]
end
end
def set_hubs
if known_hubs.present?
self[:hubs] = known_hubs
end
end
def youtube_channel_id
youtube_prefix = Regexp.new(/^https?:\/\/www\.youtube\.com\/feeds\/videos\.xml\?channel_id=([^#\?&]*)/)
if feed_url =~ youtube_prefix && self[:self_url] =~ youtube_prefix
$1
else
nil
end
end
def redirect_key
"refresher_redirect_stable_%d" % id
end
def site_url
feed_relative_url(self[:site_url])
end
def feed_relative_url(url)
root = crawl_data.redirected_to || feed_url
rebase_url(root, url).to_s
end
def site_relative_url(url)
root = site_url
rebase_url(root, url).to_s
end
def rebase_url(root, relative)
return root if relative.blank? || !relative.respond_to?(:strip)
return relative.strip if relative.strip.downcase.start_with?("http")
return nil if root.blank?
root = Addressable::URI.heuristic_parse(root)
relative = Addressable::URI.heuristic_parse(relative)
Addressable::URI.join(root, relative)
rescue Addressable::URI::InvalidURIError
Rails.logger.error("Invalid uri feed=#{id} root=#{root} relative=#{relative}")
nil
end
def sourceable
Sourceable.new(
type: self.class.name,
id: id,
title: title,
section: "Feeds",
jumpable: true
)
end
def crawl_error?
crawl_data.error_count > 23
end
def crawl_error_message
message = case crawl_data.last_error.safe_dig("class")
when "Feedkit::ClientError"
crawl_data.last_error.safe_dig("message") || "unknown"
when "Feedkit::ConnectionError"
"unable to connect to host."
when "Feedkit::NotFeed"
"response is not a feed."
when "Feedkit::NotFound"
"404 not found."
when "Feedkit::SSLError"
"unable to connect to host."
when "Feedkit::ServerError"
"invalid response."
when "Feedkit::TimeoutError"
"unable to connect to host."
when "Feedkit::TooManyRedirects"
"unable to connect to host."
when "Feedkit::Unauthorized"
"unauthorized."
end
date = Time.at(crawl_data.downloaded_at) rescue nil
if date.present? && date != Time.at(0)
message = "#{date.to_formatted_s(:date)}: #{message}"
else
message = "Error: #{message}"
end
message
end
private
def update_youtube_videos
if youtube_channel_id
FeedCrawler::UpdateYoutubeVideos.perform_in(2.minutes, id)
end
end
def refresh_favicon
FaviconCrawler::Finder.perform_async(host)
ImageCrawler::ItunesFeedImage.perform_async(id)
end
def default_values
if respond_to?(:options)
self.options ||= {}
end
end
end