# frozen_string_literal: true

require 'rails_helper'

RSpec.describe BulkImportRowService do
  subject { described_class.new }

  let(:account)    { Fabricate(:account) }
  let(:import)     { Fabricate(:bulk_import, account: account, type: import_type) }
  let(:import_row) { Fabricate(:bulk_import_row, bulk_import: import, data: data) }

  describe '#call' do
    context 'when importing a follow' do
      let(:import_type)    { 'following' }
      let(:target_account) { Fabricate(:account) }
      let(:service_double) { instance_double(FollowService, call: nil) }
      let(:data) do
        { 'acct' => target_account.acct }
      end

      before do
        allow(FollowService).to receive(:new).and_return(service_double)
      end

      it 'calls FollowService with the expected arguments and returns true' do
        expect(subject.call(import_row)).to be true

        expect(service_double).to have_received(:call).with(account, target_account, { reblogs: nil, notify: nil, languages: nil })
      end
    end

    context 'when importing a block' do
      let(:import_type)    { 'blocking' }
      let(:target_account) { Fabricate(:account) }
      let(:service_double) { instance_double(BlockService, call: nil) }
      let(:data) do
        { 'acct' => target_account.acct }
      end

      before do
        allow(BlockService).to receive(:new).and_return(service_double)
      end

      it 'calls BlockService with the expected arguments and returns true' do
        expect(subject.call(import_row)).to be true

        expect(service_double).to have_received(:call).with(account, target_account)
      end
    end

    context 'when importing a mute' do
      let(:import_type)    { 'muting' }
      let(:target_account) { Fabricate(:account) }
      let(:service_double) { instance_double(MuteService, call: nil) }
      let(:data) do
        { 'acct' => target_account.acct }
      end

      before do
        allow(MuteService).to receive(:new).and_return(service_double)
      end

      it 'calls MuteService with the expected arguments and returns true' do
        expect(subject.call(import_row)).to be true

        expect(service_double).to have_received(:call).with(account, target_account, { notifications: nil })
      end
    end

    context 'when importing a bookmark' do
      let(:import_type) { 'bookmarks' }
      let(:data) do
        { 'uri' => ActivityPub::TagManager.instance.uri_for(target_status) }
      end

      context 'when the status is public' do
        let(:target_status) { Fabricate(:status) }

        it 'bookmarks the status and returns true' do
          expect(subject.call(import_row)).to be true
          expect(account.bookmarked?(target_status)).to be true
        end
      end

      context 'when the status is not accessible to the user' do
        let(:target_status) { Fabricate(:status, visibility: :direct) }

        it 'does not bookmark the status and returns false' do
          expect(subject.call(import_row)).to be false
          expect(account.bookmarked?(target_status)).to be false
        end
      end
    end

    context 'when importing a list row' do
      let(:import_type) { 'lists' }
      let(:target_account) { Fabricate(:account) }
      let(:list_name) { 'my list' }
      let(:data) do
        { 'acct' => target_account.acct, 'list_name' => list_name }
      end

      shared_examples 'common behavior' do
        shared_examples 'row import success and list addition' do
          it 'returns true and adds the target account to the list' do
            result = nil
            expect { result = subject.call(import_row) }
              .to change { result }.from(nil).to(true)
              .and add_target_account_to_list
          end
        end

        context 'when the target account is already followed' do
          before do
            account.follow!(target_account)
          end

          include_examples 'row import success and list addition'
        end

        context 'when the user already requested to follow the target account' do
          before do
            account.request_follow!(target_account)
          end

          include_examples 'row import success and list addition'
        end

        context 'when the target account is neither followed nor requested' do
          include_examples 'row import success and list addition'
        end

        context 'when the target account is the user themself' do
          let(:target_account) { account }

          include_examples 'row import success and list addition'
        end

        def add_target_account_to_list
          change { target_account_on_list? }
            .from(false)
            .to(true)
        end

        def target_account_on_list?
          ListAccount
            .joins(:list)
            .exists?(
              account_id: target_account.id,
              list: { title: list_name }
            )
        end
      end

      context 'when the list does not exist yet' do
        include_examples 'common behavior'
      end

      context 'when the list exists' do
        before do
          Fabricate(:list, account: account, title: list_name)
        end

        include_examples 'common behavior'

        it 'does not create a new list' do
          account.follow!(target_account)

          expect { subject.call(import_row) }.to_not(change { List.where(title: list_name).count })
        end
      end
    end
  end
end