96 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			96 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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class ActivityPub::RepliesController < ActivityPub::BaseController
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  include SignatureVerification
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  include Authorization
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  include AccountOwnedConcern
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  DESCENDANTS_LIMIT = 60
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  vary_by -> { 'Signature' if authorized_fetch_mode? }
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  before_action :require_account_signature!, if: :authorized_fetch_mode?
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  before_action :set_status
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  before_action :set_replies
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  def index
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    expires_in 0, public: public_fetch_mode?
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    render json: replies_collection_presenter, serializer: ActivityPub::CollectionSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json', skip_activities: true
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  end
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  private
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  def pundit_user
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    signed_request_account
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  end
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  def set_status
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    @status = @account.statuses.find(params[:status_id])
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    authorize @status, :show?
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  rescue Mastodon::NotPermittedError
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    not_found
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  end
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  def set_replies
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    @replies = only_other_accounts? ? Status.where.not(account_id: @account.id).joins(:account).merge(Account.without_suspended) : @account.statuses
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    @replies = @replies.where(in_reply_to_id: @status.id, visibility: [:public, :unlisted])
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    @replies = @replies.paginate_by_min_id(DESCENDANTS_LIMIT, params[:min_id])
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  end
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  def replies_collection_presenter
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    page = ActivityPub::CollectionPresenter.new(
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      id: account_status_replies_url(@account, @status, page_params),
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      type: :unordered,
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      part_of: account_status_replies_url(@account, @status),
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      next: next_page,
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      items: @replies.map { |status| status.local? ? status : status.uri }
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    )
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    return page if page_requested?
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    ActivityPub::CollectionPresenter.new(
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      id: account_status_replies_url(@account, @status),
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      type: :unordered,
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      first: page
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    )
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  end
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  def page_requested?
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    truthy_param?(:page)
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  end
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  def only_other_accounts?
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    truthy_param?(:only_other_accounts)
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  end
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  def next_page
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    if only_other_accounts?
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      # Only consider remote accounts
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      return nil if @replies.size < DESCENDANTS_LIMIT
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      account_status_replies_url(
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        @account,
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        @status,
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        page: true,
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        min_id: @replies&.last&.id,
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        only_other_accounts: true
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      )
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    else
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      # For now, we're serving only self-replies, but next page might be other accounts
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      next_only_other_accounts = @replies&.last&.account_id != @account.id || @replies.size < DESCENDANTS_LIMIT
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      account_status_replies_url(
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        @account,
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        @status,
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        page: true,
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        min_id: next_only_other_accounts ? nil : @replies&.last&.id,
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        only_other_accounts: next_only_other_accounts
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      )
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    end
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  end
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  def page_params
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    params_slice(:only_other_accounts, :min_id).merge(page: true)
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  end
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end
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