# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Gitlab::GitalyClient::RefService, feature_category: :gitaly do
  let_it_be(:project) { create(:project, :repository, create_tag: 'test') }

  let(:storage_name) { project.repository_storage }
  let(:relative_path) { project.disk_path + '.git' }
  let(:repository) { project.repository }
  let(:client) { described_class.new(repository) }

  describe '#branches' do
    it 'sends a find_all_branches message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_all_branches)
        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
        .and_return([])

      client.branches
    end
  end

  describe '#remote_branches' do
    let(:remote_name) { 'my_remote' }

    subject { client.remote_branches(remote_name) }

    it 'sends a find_all_remote_branches message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_all_remote_branches)
        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
        .and_return([])

      subject
    end

    it 'concatenates and returns the response branches as Gitlab::Git::Branch objects' do
      target_commits = create_list(:gitaly_commit, 4)
      response_branches = target_commits.each_with_index.map do |gitaly_commit, i|
        Gitaly::Branch.new(name: "#{remote_name}/#{i}", target_commit: gitaly_commit)
      end
      response = [
        Gitaly::FindAllRemoteBranchesResponse.new(branches: response_branches[0, 2]),
        Gitaly::FindAllRemoteBranchesResponse.new(branches: response_branches[2, 2])
      ]

      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_all_remote_branches).and_return(response)

      expect(subject.length).to be(response_branches.length)

      response_branches.each_with_index do |gitaly_branch, i|
        branch = subject[i]
        commit = Gitlab::Git::Commit.new(repository, gitaly_branch.target_commit)

        expect(branch.name).to eq(i.to_s) # It removes the `remote/` prefix
        expect(branch.dereferenced_target).to eq(commit)
      end
    end
  end

  describe '#merged_branches' do
    it 'sends a find_all_branches message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_all_branches)
        .with(gitaly_request_with_params(merged_only: true, merged_branches: ['test']), kind_of(Hash))
        .and_return([])

      client.merged_branches(%w[test])
    end
  end

  describe '#find_branch' do
    it 'sends a find_branch message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_branch)
        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
        .and_return(double(branch: Gitaly::Branch.new(name: 'name', target_commit: build(:gitaly_commit))))

      client.find_branch('name')
    end

    context 'when Gitaly returns a ambiguios reference error' do
      it 'raises an UnknownRef error' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:find_branch)
          .and_raise(GRPC::BadStatus.new(2, 'reference is ambiguous'))

        expect { client.find_branch('name') }.to raise_error(Gitlab::Git::AmbiguousRef, 'branch is ambiguous: name')
      end
    end
  end

  describe '#find_tag' do
    it 'sends a find_tag message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_tag)
        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
        .and_return(double(tag: Gitaly::Tag.new))

      client.find_tag('name')
    end

    context 'when tag is empty' do
      it 'does not send a fing_tag message' do
        expect_any_instance_of(Gitaly::RefService::Stub).not_to receive(:find_tag)

        expect(client.find_tag('')).to be_nil
      end
    end

    context 'when Gitaly returns an Internal error' do
      it 'raises an Internal error' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:find_tag)
          .and_raise(GRPC::Internal.new('something went wrong'))

        expect { client.find_tag('v1.0.0') }.to raise_error(GRPC::Internal)
      end
    end

    context 'when Gitaly returns a tag_not_found error' do
      it 'raises an UnknownRef error' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:find_tag)
          .and_raise(new_detailed_error(GRPC::Core::StatusCodes::NOT_FOUND,
            "tag was not found",
            Gitaly::FindTagError.new(tag_not_found: Gitaly::ReferenceNotFoundError.new)))

        expect { client.find_tag('v1.0.0') }.to raise_error(Gitlab::Git::ReferenceNotFoundError,
          'tag does not exist: v1.0.0')
      end
    end
  end

  describe '#default_branch_name' do
    it 'sends a find_default_branch_name message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_default_branch_name)
        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
        .and_return(double(name: 'refs/heads/main'))

      response = client.default_branch_name

      expect(response).to eq('main')
    end
  end

  describe '#local_branches' do
    let(:remote_name) { 'my_remote' }

    it 'sends a find_local_branches message' do
      target_commits = create_list(:gitaly_commit, 4)

      local_branches = target_commits.each_with_index.map do |gitaly_commit, i|
        Gitaly::Branch.new(name: "#{remote_name}/#{i}", target_commit: gitaly_commit)
      end

      response = [
        Gitaly::FindLocalBranchesResponse.new(local_branches: local_branches[0, 2]),
        Gitaly::FindLocalBranchesResponse.new(local_branches: local_branches[2, 2])
      ]

      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_local_branches)
              .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
              .and_return(response)

      subject = client.local_branches

      expect(subject.length).to be(target_commits.length)
    end

    it 'parses and sends the sort parameter' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_local_branches)
              .with(gitaly_request_with_params(sort_by: :UPDATED_DESC), kind_of(Hash))
              .and_return([])

      client.local_branches(sort_by: 'updated_desc')
    end

    it 'translates known mismatches on sort param values' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_local_branches)
              .with(gitaly_request_with_params(sort_by: :NAME), kind_of(Hash))
              .and_return([])

      client.local_branches(sort_by: 'name_asc')
    end

    it 'uses default sort by name' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_local_branches)
              .with(gitaly_request_with_params(sort_by: :NAME), kind_of(Hash))
              .and_return([])

      client.local_branches(sort_by: 'invalid')
    end
  end

  describe '#tags' do
    it 'sends a find_all_tags message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_all_tags)
        .and_return([])

      client.tags
    end

    context 'with sorting option' do
      it 'sends a correct find_all_tags message' do
        expected_sort_by = Gitaly::FindAllTagsRequest::SortBy.new(
          key: :REFNAME,
          direction: :ASCENDING
        )

        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:find_all_tags)
          .with(gitaly_request_with_params(sort_by: expected_sort_by), kind_of(Hash))
          .and_return([])

        client.tags(sort_by: 'name_asc')
      end

      context 'with semantic version sorting' do
        it 'sends a correct find_all_tags message' do
          expected_sort_by = Gitaly::FindAllTagsRequest::SortBy.new(
            key: :VERSION_REFNAME,
            direction: :ASCENDING
          )

          expect_any_instance_of(Gitaly::RefService::Stub)
            .to receive(:find_all_tags)
            .with(gitaly_request_with_params(sort_by: expected_sort_by), kind_of(Hash))
            .and_return([])

          client.tags(sort_by: 'version_asc')
        end
      end

      context 'when sorting option is invalid' do
        it 'uses default sort by name' do
          expect_any_instance_of(Gitaly::RefService::Stub)
            .to receive(:find_all_tags)
                  .with(gitaly_request_with_params(sort_by: nil), kind_of(Hash))
                  .and_return([])

          client.tags(sort_by: 'invalid')
        end
      end
    end

    context 'with pagination option' do
      it 'sends a correct find_all_tags message' do
        expected_pagination = Gitaly::PaginationParameter.new(
          limit: 5,
          page_token: 'refs/tags/v1.0.0'
        )

        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:find_all_tags)
          .with(gitaly_request_with_params(pagination_params: expected_pagination), kind_of(Hash))
          .and_return([])

        client.tags(pagination_params: { limit: 5, page_token: 'refs/tags/v1.0.0' })
      end
    end
  end

  describe '#branch_names_contains_sha' do
    it 'sends a list_branch_names_containing_commit message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:list_branch_names_containing_commit)
        .with(gitaly_request_with_params(commit_id: '123', limit: 0), kind_of(Hash))
        .and_return([])

      client.branch_names_contains_sha('123')
    end
  end

  describe '#get_tag_messages' do
    it 'sends a get_tag_messages message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:get_tag_messages)
        .with(gitaly_request_with_params(tag_ids: ['some_tag_id']), kind_of(Hash))
        .and_return([])

      client.get_tag_messages(['some_tag_id'])
    end
  end

  describe '#get_tag_signatures' do
    it 'sends a get_tag_signatures message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:get_tag_signatures)
        .with(gitaly_request_with_params(tag_revisions: ['some_tag_id']), kind_of(Hash))
        .and_return([])

      client.get_tag_signatures(['some_tag_id'])
    end
  end

  describe '#ref_exists?' do
    let(:ref) { 'refs/heads/master' }

    it 'sends a ref_exists message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:ref_exists)
        .with(gitaly_request_with_params(ref: ref), kind_of(Hash))
        .and_return(double('ref_exists_response', value: true))

      expect(client.ref_exists?(ref)).to be true
    end
  end

  describe '#update_refs' do
    let(:old_sha) { '0b4bc9a49b562e85de7cc9e834518ea6828729b9' }
    let(:new_sha) { Gitlab::Git::SHA1_EMPTY_TREE_ID }
    let(:reference) { 'refs/does/not/exist' }
    let(:expected_param) do
      Gitaly::UpdateReferencesRequest::Update.new(
        old_object_id: old_sha,
        new_object_id: new_sha,
        reference: reference
      )
    end

    let(:ref_list) do
      [
        {
          old_sha: old_sha,
          new_sha: new_sha,
          reference: reference
        }
      ]
    end

    subject(:update_refs) { client.update_refs(ref_list: ref_list) }

    it 'sends a update_refs message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:update_references)
        .with(array_including(gitaly_request_with_params(updates: [expected_param])), kind_of(Hash))
        .and_return(double('update_refs_response', git_error: ""))

      update_refs
    end

    context 'with a generic BadStatus error' do
      let(:generic_error) do
        GRPC::BadStatus.new(
          GRPC::Core::StatusCodes::FAILED_PRECONDITION,
          "error message"
        )
      end

      it 'raises the BadStatus error' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:update_references)
          .with(array_including(gitaly_request_with_params(updates: [expected_param])), kind_of(Hash))
          .and_raise(generic_error)

        expect { update_refs }.to raise_error(GRPC::BadStatus)
      end
    end

    context 'with a reference state mismatch error' do
      let(:reference_state_mismatch_error) do
        new_detailed_error(
          GRPC::Core::StatusCodes::FAILED_PRECONDITION,
          "error message",
          Gitaly::UpdateReferencesError.new(reference_state_mismatch: Gitaly::ReferenceStateMismatchError.new))
      end

      it 'raises ReferencesLockedError' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:update_references)
          .with(array_including(gitaly_request_with_params(updates: [expected_param])), kind_of(Hash))
          .and_raise(reference_state_mismatch_error)

        expect { update_refs }.to raise_error(Gitlab::Git::ReferenceStateMismatchError)
      end
    end

    context 'with a references locked error' do
      let(:references_locked_error) do
        new_detailed_error(
          GRPC::Core::StatusCodes::FAILED_PRECONDITION,
          "error message",
          Gitaly::UpdateReferencesError.new(references_locked: Gitaly::ReferencesLockedError.new))
      end

      it 'raises ReferencesLockedError' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:update_references)
          .with(array_including(gitaly_request_with_params(updates: [expected_param])), kind_of(Hash))
          .and_raise(references_locked_error)

        expect { update_refs }.to raise_error(Gitlab::Git::ReferencesLockedError)
      end
    end

    context 'with a invalid format error' do
      let(:invalid_refs) { ['\invali.\d/1', '\.invali/d/2'] }
      let(:invalid_reference_format_error) do
        new_detailed_error(
          GRPC::Core::StatusCodes::INVALID_ARGUMENT,
          "error message",
          Gitaly::UpdateReferencesError.new(invalid_format: Gitaly::InvalidRefFormatError.new(refs: invalid_refs)))
      end

      it 'raises InvalidRefFormatError' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:update_references)
          .with(array_including(gitaly_request_with_params(updates: [expected_param])), kind_of(Hash))
          .and_raise(invalid_reference_format_error)

        expect { update_refs }.to raise_error do |error|
          expect(error).to be_a(Gitlab::Git::InvalidRefFormatError)
          expect(error.message).to eq("references have an invalid format: #{invalid_refs.join(',')}")
        end
      end
    end
  end

  describe '#delete_refs' do
    let(:prefixes) { %w[refs/heads refs/keep-around] }

    subject(:delete_refs) { client.delete_refs(except_with_prefixes: prefixes) }

    it 'sends a delete_refs message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:delete_refs)
        .with(gitaly_request_with_params(except_with_prefix: prefixes), kind_of(Hash))
        .and_return(double('delete_refs_response', git_error: ""))

      delete_refs
    end

    context 'with a references locked error' do
      let(:references_locked_error) do
        new_detailed_error(
          GRPC::Core::StatusCodes::FAILED_PRECONDITION,
          "error message",
          Gitaly::DeleteRefsError.new(references_locked: Gitaly::ReferencesLockedError.new))
      end

      it 'raises ReferencesLockedError' do
        expect_any_instance_of(Gitaly::RefService::Stub).to receive(:delete_refs)
          .with(gitaly_request_with_params(except_with_prefix: prefixes), kind_of(Hash))
          .and_raise(references_locked_error)

        expect { delete_refs }.to raise_error(Gitlab::Git::ReferencesLockedError)
      end
    end

    context 'with a invalid format error' do
      let(:invalid_refs) { ['\invali.\d/1', '\.invali/d/2'] }
      let(:invalid_reference_format_error) do
        new_detailed_error(
          GRPC::Core::StatusCodes::INVALID_ARGUMENT,
          "error message",
          Gitaly::DeleteRefsError.new(invalid_format: Gitaly::InvalidRefFormatError.new(refs: invalid_refs)))
      end

      it 'raises InvalidRefFormatError' do
        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:delete_refs)
          .with(gitaly_request_with_params(except_with_prefix: prefixes), kind_of(Hash))
          .and_raise(invalid_reference_format_error)

        expect { delete_refs }.to raise_error do |error|
          expect(error).to be_a(Gitlab::Git::InvalidRefFormatError)
          expect(error.message).to eq("references have an invalid format: #{invalid_refs.join(',')}")
        end
      end
    end
  end

  describe '#list_refs' do
    let(:oid) { project.repository.commit.id }

    it 'sends a list_refs message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:list_refs)
        .with(
          gitaly_request_with_params(patterns: ['refs/heads/'], pointing_at_oids: [], peel_tags: false),
          kind_of(Hash)
        )
        .and_call_original

      client.list_refs
    end

    it 'accepts a patterns argument' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:list_refs)
        .with(gitaly_request_with_params(patterns: ['refs/tags/']), kind_of(Hash))
        .and_call_original

      client.list_refs([Gitlab::Git::TAG_REF_PREFIX])
    end

    it 'accepts a pointing_at_oids argument' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:list_refs)
        .with(gitaly_request_with_params(pointing_at_oids: [oid]), kind_of(Hash))
        .and_call_original

      client.list_refs(pointing_at_oids: [oid])
    end

    it 'accepts a peel_tags argument' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:list_refs)
        .with(gitaly_request_with_params(peel_tags: true), kind_of(Hash))
        .and_call_original

      client.list_refs(peel_tags: true)
    end

    context 'with sorting option' do
      it 'sends a correct list_refs message' do
        expected_sort_by = Gitaly::ListRefsRequest::SortBy.new(
          key: :REFNAME,
          direction: :DESCENDING
        )

        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:list_refs)
          .with(gitaly_request_with_params(sort_by: expected_sort_by), kind_of(Hash))
          .and_return([])

        client.list_refs(sort_by: 'name_desc')
      end

      context 'when sorting option is invalid' do
        it 'uses default sort by name' do
          expected_sort_by = Gitaly::ListRefsRequest::SortBy.new(
            key: :REFNAME,
            direction: :ASCENDING
          )

          expect_any_instance_of(Gitaly::RefService::Stub)
            .to receive(:list_refs)
                  .with(gitaly_request_with_params(sort_by: expected_sort_by), kind_of(Hash))
                  .and_return([])

          client.list_refs(sort_by: 'invalid')
        end
      end
    end

    context 'with pagination option' do
      it 'sends a correct list_refs message' do
        expected_pagination = Gitaly::PaginationParameter.new(
          limit: 5,
          page_token: 'refs/tags/v1.0.0'
        )

        expect_any_instance_of(Gitaly::RefService::Stub)
          .to receive(:list_refs)
          .with(gitaly_request_with_params(pagination_params: expected_pagination), kind_of(Hash))
          .and_return([])

        client.list_refs(pagination_params: { limit: 5, page_token: 'refs/tags/v1.0.0' })
      end
    end
  end

  describe '#find_refs_by_oid' do
    let(:oid) { project.repository.commit.id }

    it 'sends a find_refs_by_oid message' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_refs_by_oid)
        .with(gitaly_request_with_params(sort_field: 'refname',
          oid: oid,
          limit: 1), kind_of(Hash))
        .and_call_original

      refs = client.find_refs_by_oid(oid: oid, limit: 1)

      expect(refs.to_a).to eq([Gitlab::Git::BRANCH_REF_PREFIX + project.repository.root_ref])
    end

    it 'filters by ref_patterns' do
      expect_any_instance_of(Gitaly::RefService::Stub)
        .to receive(:find_refs_by_oid)
        .with(gitaly_request_with_params(sort_field: 'refname',
          oid: oid,
          limit: 1,
          ref_patterns: [Gitlab::Git::TAG_REF_PREFIX]), kind_of(Hash))
        .and_call_original

      refs = client.find_refs_by_oid(oid: oid, limit: 1, ref_patterns: [Gitlab::Git::TAG_REF_PREFIX])

      expect(refs.to_a).to eq([Gitlab::Git::TAG_REF_PREFIX + 'test'])
    end
  end
end
