# frozen_string_literal: true

require 'rails_helper'

RSpec.describe ActivityPub::Activity::Follow do
  let(:sender)    { Fabricate(:account) }
  let(:recipient) { Fabricate(:account) }

  let(:json) do
    {
      '@context': 'https://www.w3.org/ns/activitystreams',
      id: 'foo',
      type: 'Follow',
      actor: ActivityPub::TagManager.instance.uri_for(sender),
      object: ActivityPub::TagManager.instance.uri_for(recipient),
    }.with_indifferent_access
  end

  describe '#perform' do
    subject { described_class.new(json, sender) }

    context 'with no prior follow' do
      context 'with an unlocked account' do
        before do
          subject.perform
        end

        it 'creates a follow from sender to recipient' do
          expect(sender.following?(recipient)).to be true
          expect(sender.active_relationships.find_by(target_account: recipient).uri).to eq 'foo'
        end

        it 'does not create a follow request' do
          expect(sender.requested?(recipient)).to be false
        end
      end

      context 'when silenced account following an unlocked account' do
        before do
          sender.touch(:silenced_at)
          subject.perform
        end

        it 'does not create a follow from sender to recipient' do
          expect(sender.following?(recipient)).to be false
        end

        it 'creates a follow request' do
          expect(sender.requested?(recipient)).to be true
          expect(sender.follow_requests.find_by(target_account: recipient).uri).to eq 'foo'
        end
      end

      context 'with an unlocked account muting the sender' do
        before do
          recipient.mute!(sender)
          subject.perform
        end

        it 'creates a follow from sender to recipient' do
          expect(sender.following?(recipient)).to be true
          expect(sender.active_relationships.find_by(target_account: recipient).uri).to eq 'foo'
        end

        it 'does not create a follow request' do
          expect(sender.requested?(recipient)).to be false
        end
      end

      context 'when locked account' do
        before do
          recipient.update(locked: true)
          subject.perform
        end

        it 'does not create a follow from sender to recipient' do
          expect(sender.following?(recipient)).to be false
        end

        it 'creates a follow request' do
          expect(sender.requested?(recipient)).to be true
          expect(sender.follow_requests.find_by(target_account: recipient).uri).to eq 'foo'
        end
      end
    end

    context 'when recipient blocks sender' do
      before { Fabricate :block, account: recipient, target_account: sender }

      it 'sends a reject and does not follow' do
        subject.perform

        expect(sender.requested?(recipient))
          .to be false
        expect(ActivityPub::DeliveryWorker)
          .to have_enqueued_sidekiq_job(
            match_json_values(type: 'Reject', object: include(type: 'Follow')),
            recipient.id,
            anything
          )
      end
    end

    context 'when a follow relationship already exists' do
      before do
        sender.active_relationships.create!(target_account: recipient, uri: 'bar')
      end

      context 'with an unlocked account' do
        before do
          subject.perform
        end

        it 'correctly sets the new URI' do
          expect(sender.active_relationships.find_by(target_account: recipient).uri).to eq 'foo'
        end

        it 'does not create a follow request' do
          expect(sender.requested?(recipient)).to be false
        end
      end

      context 'when silenced account following an unlocked account' do
        before do
          sender.touch(:silenced_at)
          subject.perform
        end

        it 'correctly sets the new URI' do
          expect(sender.active_relationships.find_by(target_account: recipient).uri).to eq 'foo'
        end

        it 'does not create a follow request' do
          expect(sender.requested?(recipient)).to be false
        end
      end

      context 'with an unlocked account muting the sender' do
        before do
          recipient.mute!(sender)
          subject.perform
        end

        it 'correctly sets the new URI' do
          expect(sender.active_relationships.find_by(target_account: recipient).uri).to eq 'foo'
        end

        it 'does not create a follow request' do
          expect(sender.requested?(recipient)).to be false
        end
      end

      context 'when locked account' do
        before do
          recipient.update(locked: true)
          subject.perform
        end

        it 'correctly sets the new URI' do
          expect(sender.active_relationships.find_by(target_account: recipient).uri).to eq 'foo'
        end

        it 'does not create a follow request' do
          expect(sender.requested?(recipient)).to be false
        end
      end
    end

    context 'when a follow request already exists' do
      before do
        sender.follow_requests.create!(target_account: recipient, uri: 'bar')
      end

      context 'when silenced account following an unlocked account' do
        before do
          sender.touch(:silenced_at)
          subject.perform
        end

        it 'does not create a follow from sender to recipient' do
          expect(sender.following?(recipient)).to be false
        end

        it 'correctly sets the new URI' do
          expect(sender.requested?(recipient)).to be true
          expect(sender.follow_requests.find_by(target_account: recipient).uri).to eq 'foo'
        end
      end

      context 'when locked account' do
        before do
          recipient.update(locked: true)
          subject.perform
        end

        it 'does not create a follow from sender to recipient' do
          expect(sender.following?(recipient)).to be false
        end

        it 'correctly sets the new URI' do
          expect(sender.requested?(recipient)).to be true
          expect(sender.follow_requests.find_by(target_account: recipient).uri).to eq 'foo'
        end
      end
    end
  end
end
