# frozen_string_literal: true

require 'rails_helper'

RSpec.describe DeleteAccountService do
  shared_examples 'common behavior' do
    subject { described_class.new.call(account) }

    let!(:status) { Fabricate(:status, account: account) }
    let!(:mention) { Fabricate(:mention, account: local_follower) }
    let!(:status_with_mention) { Fabricate(:status, account: account, mentions: [mention]) }
    let!(:media_attachment) { Fabricate(:media_attachment, account: account) }
    let!(:notification) { Fabricate(:notification, account: account) }
    let!(:favourite) { Fabricate(:favourite, account: account, status: Fabricate(:status, account: local_follower)) }
    let!(:poll) { Fabricate(:poll, account: account) }
    let!(:poll_vote) { Fabricate(:poll_vote, account: local_follower, poll: poll) }

    let!(:active_relationship) { Fabricate(:follow, account: account, target_account: local_follower) }
    let!(:passive_relationship) { Fabricate(:follow, account: local_follower, target_account: account) }
    let!(:endorsement) { Fabricate(:account_pin, account: local_follower, target_account: account) }

    let!(:mention_notification) { Fabricate(:notification, account: local_follower, activity: mention, type: :mention) }
    let!(:status_notification) { Fabricate(:notification, account: local_follower, activity: status, type: :status) }
    let!(:poll_notification) { Fabricate(:notification, account: local_follower, activity: poll, type: :poll) }
    let!(:favourite_notification) { Fabricate(:notification, account: local_follower, activity: favourite, type: :favourite) }
    let!(:follow_notification) { Fabricate(:notification, account: local_follower, activity: active_relationship, type: :follow) }

    let!(:account_note) { Fabricate(:account_note, account: account) }

    it 'deletes associated owned and target records and target notifications' do
      subject

      expect_deletion_of_associated_owned_records
      expect_deletion_of_associated_target_records
      expect_deletion_of_associated_target_notifications
    end

    def expect_deletion_of_associated_owned_records
      expect { status.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { status_with_mention.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { mention.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { media_attachment.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { notification.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { favourite.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { active_relationship.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { passive_relationship.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { poll.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { poll_vote.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { account_note.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { collection.reload }.to raise_error(ActiveRecord::RecordNotFound)
    end

    def expect_deletion_of_associated_target_records
      expect { endorsement.reload }.to raise_error(ActiveRecord::RecordNotFound)
    end

    def expect_deletion_of_associated_target_notifications
      expect { favourite_notification.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { follow_notification.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { mention_notification.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { poll_notification.reload }.to raise_error(ActiveRecord::RecordNotFound)
      expect { status_notification.reload }.to raise_error(ActiveRecord::RecordNotFound)
    end
  end

  describe 'ASSOCIATIONS_WITHOUT_SIDE_EFFECTS' do
    it 'is a subset of ASSOCIATIONS_ON_PURGE' do
      expect(described_class::ASSOCIATIONS_WITHOUT_SIDE_EFFECTS - described_class::ASSOCIATIONS_ON_PURGE).to eq []
    end
  end

  describe '#call on local account', :inline_jobs do
    before do
      stub_request(:post, remote_alice.inbox_url).to_return(status: 201)
      stub_request(:post, remote_bob.inbox_url).to_return(status: 201)
    end

    let!(:remote_alice) { Fabricate(:account, inbox_url: 'https://alice.com/inbox', domain: 'alice.com', protocol: :activitypub) }
    let!(:remote_bob) { Fabricate(:account, inbox_url: 'https://bob.com/inbox', domain: 'bob.com', protocol: :activitypub) }

    it_behaves_like 'common behavior' do
      let(:account) { Fabricate(:account) }
      let(:local_follower) { Fabricate(:account) }
      let!(:collection) { Fabricate(:collection, account:) } # rubocop:disable RSpec/LetSetup

      it 'sends a delete actor activity to all known inboxes' do
        subject
        expect(a_request(:post, remote_alice.inbox_url)).to have_been_made.once
        expect(a_request(:post, remote_bob.inbox_url)).to have_been_made.once
      end
    end
  end

  describe '#call on remote account', :inline_jobs do
    before do
      stub_request(:post, account.inbox_url).to_return(status: 201)
    end

    it_behaves_like 'common behavior' do
      let(:account) { Fabricate(:account, inbox_url: 'https://bob.com/inbox', protocol: :activitypub, domain: 'bob.com') }
      let(:local_follower) { Fabricate(:account) }

      let!(:collection) { Fabricate(:remote_collection, account:) } # rubocop:disable RSpec/LetSetup

      it 'sends expected activities to followed and follower inboxes' do
        subject

        expect(post_to_inbox_with_reject).to have_been_made.once
        expect(post_to_inbox_with_undo).to have_been_made.once
      end

      def post_to_inbox_with_undo
        a_request(:post, account.inbox_url).with(
          body: hash_including({
            'type' => 'Undo',
            'object' => hash_including({
              'type' => 'Follow',
              'actor' => ActivityPub::TagManager.instance.uri_for(local_follower),
              'object' => account.uri,
            }),
          })
        )
      end

      def post_to_inbox_with_reject
        a_request(:post, account.inbox_url).with(
          body: hash_including({
            'type' => 'Reject',
            'object' => hash_including({
              'type' => 'Follow',
              'actor' => account.uri,
              'object' => ActivityPub::TagManager.instance.uri_for(local_follower),
            }),
          })
        )
      end
    end
  end
end
