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YuruToot/app/lib/status_cache_hydrator.rb

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# frozen_string_literal: true
class StatusCacheHydrator
def initialize(status)
@status = status
end
def hydrate(account_id)
# The cache of the serialized hash is generated by the fan-out-on-write service
payload = Rails.cache.fetch("fan-out/#{@status.id}") { InlineRenderer.render(@status, nil, :status) }
# If we're delivering to the author who disabled the display of the application used to create the
# status, we need to hydrate the application, since it was not rendered for the basic payload
payload[:application] = payload_application if payload[:application].nil? && @status.account_id == account_id
# We take advantage of the fact that some relationships can only occur with an original status, not
# the reblog that wraps it, so we can assume that some values are always false
if payload[:reblog]
hydrate_reblog_payload(payload, account_id)
else
hydrate_non_reblog_payload(payload, account_id)
end
end
private
def hydrate_non_reblog_payload(empty_payload, account_id)
empty_payload.tap do |payload|
payload[:favourited] = Favourite.exists?(account_id: account_id, status_id: @status.id)
payload[:reblogged] = Status.exists?(account_id: account_id, reblog_of_id: @status.id)
payload[:muted] = ConversationMute.exists?(account_id: account_id, conversation_id: @status.conversation_id)
payload[:bookmarked] = Bookmark.exists?(account_id: account_id, status_id: @status.id)
payload[:pinned] = StatusPin.exists?(account_id: account_id, status_id: @status.id) if @status.account_id == account_id
payload[:filtered] = mapped_applied_custom_filter(account_id, @status)
if payload[:poll]
payload[:poll][:voted] = @status.account_id == account_id
payload[:poll][:own_votes] = []
end
end
end
def hydrate_reblog_payload(empty_payload, account_id)
empty_payload.tap do |payload|
payload[:muted] = false
payload[:bookmarked] = false
payload[:pinned] = false if @status.account_id == account_id
payload[:filtered] = mapped_applied_custom_filter(account_id, @status.reblog)
# If the reblogged status is being delivered to the author who disabled the display of the application
# used to create the status, we need to hydrate it here too
payload[:reblog][:application] = payload_reblog_application if payload[:reblog][:application].nil? && @status.reblog.account_id == account_id
payload[:reblog][:favourited] = Favourite.exists?(account_id: account_id, status_id: @status.reblog_of_id)
payload[:reblog][:reblogged] = Status.exists?(account_id: account_id, reblog_of_id: @status.reblog_of_id)
payload[:reblog][:muted] = ConversationMute.exists?(account_id: account_id, conversation_id: @status.reblog.conversation_id)
payload[:reblog][:bookmarked] = Bookmark.exists?(account_id: account_id, status_id: @status.reblog_of_id)
payload[:reblog][:pinned] = StatusPin.exists?(account_id: account_id, status_id: @status.reblog_of_id) if @status.reblog.account_id == account_id
payload[:reblog][:filtered] = payload[:filtered]
if payload[:reblog][:poll]
if @status.reblog.account_id == account_id
payload[:reblog][:poll][:voted] = true
payload[:reblog][:poll][:own_votes] = []
else
own_votes = PollVote.where(poll_id: @status.reblog.poll_id, account_id: account_id).pluck(:choice)
payload[:reblog][:poll][:voted] = !own_votes.empty?
payload[:reblog][:poll][:own_votes] = own_votes
end
end
payload[:favourited] = payload[:reblog][:favourited]
payload[:reblogged] = payload[:reblog][:reblogged]
end
end
def mapped_applied_custom_filter(account_id, status)
CustomFilter
.apply_cached_filters(CustomFilter.cached_filters_for(account_id), status)
.map { |filter| serialized_filter(filter) }
end
def serialized_filter(filter)
ActiveModelSerializers::SerializableResource.new(
filter,
serializer: REST::FilterResultSerializer
).as_json
end
def payload_application
@status.application.present? ? serialized_status_application_json : nil
end
def serialized_status_application_json
ActiveModelSerializers::SerializableResource.new(
@status.application,
serializer: REST::StatusSerializer::ApplicationSerializer
).as_json
end
def payload_reblog_application
@status.reblog.application.present? ? serialized_status_reblog_application_json : nil
end
def serialized_status_reblog_application_json
ActiveModelSerializers::SerializableResource.new(
@status.reblog.application,
serializer: REST::StatusSerializer::ApplicationSerializer
).as_json
end
end