diaspora/lib/stream/base.rb
2016-10-26 02:48:11 +02:00

124 lines
2.9 KiB
Ruby

class Stream::Base
TYPES_OF_POST_IN_STREAM = ['StatusMessage', 'Reshare']
attr_accessor :max_time, :order, :user, :publisher
def initialize(user, opts={})
self.user = user
self.max_time = opts[:max_time]
self.order = opts[:order]
self.publisher = Publisher.new(self.user, publisher_opts)
end
#requied to implement said stream
def link(opts={})
'change me in lib/base_stream.rb!'
end
# @return [Boolean]
def can_comment?(post)
return true if post.author.local?
post_is_from_contact?(post)
end
def post_from_group(post)
[]
end
# @return [String]
def title
'a title'
end
# @return [ActiveRecord::Relation<Post>]
def posts
Post.all
end
# @return [Array<Post>]
def stream_posts
self.posts.for_a_stream(max_time, order, self.user).tap do |posts|
like_posts_for_stream!(posts) #some sql person could probably do this with joins.
end
end
# @return [ActiveRecord::Association<Person>] AR association of people within stream's given aspects
def people
people_ids = self.stream_posts.map{|x| x.author_id}
Person.where(:id => people_ids).
includes(:profile)
end
# @return [String]
def contacts_link
Rails.application.routes.url_helpers.contacts_path
end
# @return [Boolean]
def for_all_aspects?
true
end
#NOTE: MBS bad bad methods the fact we need these means our views are foobared. please kill them and make them
#private methods on the streams that need them
def aspects
user.post_default_aspects
end
# @return [Aspect] The first aspect in #aspects
def aspect
aspects.first
end
def aspect_ids
aspects.map {|x| x.try(:id) }
end
def max_time=(time_string)
@max_time = Time.at(time_string.to_i) unless time_string.blank?
@max_time ||= (Time.now + 1)
end
def order=(order_string)
@order = order_string
@order ||= 'created_at'
end
protected
# @return [void]
def like_posts_for_stream!(posts)
return posts unless @user
likes = Like.where(:author_id => @user.person_id, :target_id => posts.map(&:id), :target_type => "Post")
like_hash = likes.inject({}) do |hash, like|
hash[like.target_id] = like
hash
end
posts.each do |post|
post.user_like = like_hash[post.id]
end
end
# @return [Hash]
def publisher_opts
{}
end
# Memoizes all Contacts present in the Stream
#
# @return [Array<Contact>]
def contacts_in_stream
@contacts_in_stream ||= Contact.where(:user_id => user.id, :person_id => people.map(&:id)).load
end
# @param post [Post]
# @return [Boolean]
def post_is_from_contact?(post)
@can_comment_cache ||= {}
@can_comment_cache[post.id] ||= contacts_in_stream.find{|contact| contact.person_id == post.author.id}.present?
@can_comment_cache[post.id] ||= (user.person_id == post.author_id)
@can_comment_cache[post.id]
end
end