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# frozen_string_literal: true
class ActivityPub::RepliesController < ActivityPub::BaseController
include SignatureAuthentication
include Authorization
include AccountOwnedConcern
DESCENDANTS_LIMIT = 60
before_action :require_signature!, if: :authorized_fetch_mode?
before_action :set_status
before_action :set_cache_headers
before_action :set_replies
def index
expires_in 0, public: public_fetch_mode?
render json: replies_collection_presenter, serializer: ActivityPub::CollectionSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json', skip_activities: true
end
private
def set_status
@status = @account.statuses.find(params[:status_id])
authorize @status, :show?
rescue Mastodon::NotPermittedError
raise ActiveRecord::RecordNotFound
end
def set_replies
@replies = page_params[:other_accounts] ? Status.where.not(account_id: @account.id) : @account.statuses
@replies = @replies.where(in_reply_to_id: @status.id, visibility: [:public, :unlisted])
@replies = @replies.paginate_by_min_id(DESCENDANTS_LIMIT, params[:min_id])
end
def replies_collection_presenter
page = ActivityPub::CollectionPresenter.new(
id: account_status_replies_url(@account, @status, page_params),
type: :unordered,
part_of: account_status_replies_url(@account, @status),
next: next_page,
items: @replies.map { |status| status.local ? status : status.id }
)
return page if page_requested?
ActivityPub::CollectionPresenter.new(
id: account_status_replies_url(@account, @status),
type: :unordered,
first: page
)
end
def page_requested?
params[:page] == 'true'
end
def next_page
account_status_replies_url(
@account,
@status,
page: true,
min_id: @replies&.last&.id,
other_accounts: !(@replies&.last&.account_id == @account.id && @replies.size == DESCENDANTS_LIMIT)
)
end
def page_params
params_slice(:other_accounts, :min_id).merge(page: true)
end
end
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