# frozen_string_literal: true

require 'spec_helper'

describe API::Internal::Base do
  let_it_be(:user, reload: true) { create(:user) }
  let_it_be(:project, reload: true) { create(:project, :repository, :wiki_repo) }
  let_it_be(:personal_snippet) { create(:personal_snippet, :repository, author: user) }
  let_it_be(:project_snippet) { create(:project_snippet, :repository, author: user, project: project) }
  let(:key) { create(:key, user: user) }
  let(:secret_token) { Gitlab::Shell.secret_token }
  let(:gl_repository) { "project-#{project.id}" }
  let(:reference_counter) { double('ReferenceCounter') }
  let(:snippet_changes) { "#{TestEnv::BRANCH_SHA['snippet/single-file']} #{TestEnv::BRANCH_SHA['snippet/edit-file']} refs/heads/snippet/edit-file" }

  describe "GET /internal/check" do
    it do
      expect_any_instance_of(Redis).to receive(:ping).and_return('PONG')

      get api("/internal/check"), params: { secret_token: secret_token }

      expect(response).to have_gitlab_http_status(:ok)
      expect(json_response['api_version']).to eq(API::API.version)
      expect(json_response['redis']).to be(true)
    end

    it 'returns false for field `redis` when redis is unavailable' do
      expect_any_instance_of(Redis).to receive(:ping).and_raise(Errno::ENOENT)

      get api("/internal/check"), params: { secret_token: secret_token }

      expect(json_response['redis']).to be(false)
    end

    context 'authenticating' do
      it 'authenticates using a header' do
        get api("/internal/check"),
            headers: { API::Helpers::GITLAB_SHARED_SECRET_HEADER => Base64.encode64(secret_token) }

        expect(response).to have_gitlab_http_status(:ok)
      end

      it 'returns 401 when no credentials provided' do
        get(api("/internal/check"))

        expect(response).to have_gitlab_http_status(:unauthorized)
      end
    end
  end

  describe 'GET /internal/two_factor_recovery_codes' do
    it 'returns an error message when the key does not exist' do
      post api('/internal/two_factor_recovery_codes'),
           params: {
             secret_token: secret_token,
             key_id: non_existing_record_id
           }

      expect(json_response['success']).to be_falsey
      expect(json_response['message']).to eq('Could not find the given key')
    end

    it 'returns an error message when the key is a deploy key' do
      deploy_key = create(:deploy_key)

      post api('/internal/two_factor_recovery_codes'),
           params: {
             secret_token: secret_token,
             key_id: deploy_key.id
           }

      expect(json_response['success']).to be_falsey
      expect(json_response['message']).to eq('Deploy keys cannot be used to retrieve recovery codes')
    end

    it 'returns an error message when the user does not exist' do
      key_without_user = create(:key, user: nil)

      post api('/internal/two_factor_recovery_codes'),
           params: {
             secret_token: secret_token,
             key_id: key_without_user.id
           }

      expect(json_response['success']).to be_falsey
      expect(json_response['message']).to eq('Could not find a user for the given key')
      expect(json_response['recovery_codes']).to be_nil
    end

    context 'when two-factor is enabled' do
      it 'returns new recovery codes when the user exists' do
        allow_any_instance_of(User).to receive(:two_factor_enabled?).and_return(true)
        allow_any_instance_of(User)
          .to receive(:generate_otp_backup_codes!).and_return(%w(119135e5a3ebce8e 34bd7b74adbc8861))

        post api('/internal/two_factor_recovery_codes'),
             params: {
               secret_token: secret_token,
               key_id: key.id
             }

        expect(json_response['success']).to be_truthy
        expect(json_response['recovery_codes']).to match_array(%w(119135e5a3ebce8e 34bd7b74adbc8861))
      end
    end

    context 'when two-factor is not enabled' do
      it 'returns an error message' do
        allow_any_instance_of(User).to receive(:two_factor_enabled?).and_return(false)

        post api('/internal/two_factor_recovery_codes'),
             params: {
               secret_token: secret_token,
               key_id: key.id
             }

        expect(json_response['success']).to be_falsey
        expect(json_response['recovery_codes']).to be_nil
      end
    end
  end

  describe "POST /internal/lfs_authenticate" do
    before do
      project.add_developer(user)
    end

    context 'user key' do
      it 'returns the correct information about the key' do
        lfs_auth_key(key.id, project)

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['username']).to eq(user.username)
        expect(json_response['repository_http_path']).to eq(project.http_url_to_repo)
        expect(json_response['expires_in']).to eq(Gitlab::LfsToken::DEFAULT_EXPIRE_TIME)
        expect(Gitlab::LfsToken.new(key).token_valid?(json_response['lfs_token'])).to be_truthy
      end

      it 'returns the correct information about the user' do
        lfs_auth_user(user.id, project)

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['username']).to eq(user.username)
        expect(json_response['repository_http_path']).to eq(project.http_url_to_repo)
        expect(Gitlab::LfsToken.new(user).token_valid?(json_response['lfs_token'])).to be_truthy
      end

      it 'returns a 404 when no key or user is provided' do
        lfs_auth_project(project)

        expect(response).to have_gitlab_http_status(:not_found)
      end

      it 'returns a 404 when the wrong key is provided' do
        lfs_auth_key(non_existing_record_id, project)

        expect(response).to have_gitlab_http_status(:not_found)
      end

      it 'returns a 404 when the wrong user is provided' do
        lfs_auth_user(non_existing_record_id, project)

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end

    context 'deploy key' do
      let(:key) { create(:deploy_key) }

      it 'returns the correct information about the key' do
        lfs_auth_key(key.id, project)

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['username']).to eq("lfs+deploy-key-#{key.id}")
        expect(json_response['repository_http_path']).to eq(project.http_url_to_repo)
        expect(Gitlab::LfsToken.new(key).token_valid?(json_response['lfs_token'])).to be_truthy
      end
    end
  end

  describe "GET /internal/discover" do
    it "finds a user by key id" do
      get(api("/internal/discover"), params: { key_id: key.id, secret_token: secret_token })

      expect(response).to have_gitlab_http_status(:ok)

      expect(json_response['name']).to eq(user.name)
    end

    it "finds a user by username" do
      get(api("/internal/discover"), params: { username: user.username, secret_token: secret_token })

      expect(response).to have_gitlab_http_status(:ok)

      expect(json_response['name']).to eq(user.name)
    end

    it 'responds successfully when a user is not found' do
      get(api('/internal/discover'), params: { username: 'noone', secret_token: secret_token })

      expect(response).to have_gitlab_http_status(:ok)

      expect(response.body).to eq('null')
    end

    it 'response successfully when passing invalid params' do
      get(api('/internal/discover'), params: { nothing: 'to find a user', secret_token: secret_token })

      expect(response).to have_gitlab_http_status(:ok)

      expect(response.body).to eq('null')
    end
  end

  describe "GET /internal/authorized_keys" do
    context "using an existing key's fingerprint" do
      it "finds the key" do
        get(api('/internal/authorized_keys'), params: { fingerprint: key.fingerprint, secret_token: secret_token })

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['id']).to eq(key.id)
        expect(json_response['key'].split[1]).to eq(key.key.split[1])
      end

      it 'exposes the comment of the key as a simple identifier of username + hostname' do
        get(api('/internal/authorized_keys'), params: { fingerprint: key.fingerprint, secret_token: secret_token })

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['key']).to include("#{key.user_name} (#{Gitlab.config.gitlab.host})")
      end
    end

    context "non existing key's fingerprint" do
      it "returns 404" do
        get(api('/internal/authorized_keys'), params: { fingerprint: "no:t-:va:li:d0", secret_token: secret_token })

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end

    context "using a partial fingerprint" do
      it "returns 404" do
        get(api('/internal/authorized_keys'), params: { fingerprint: "#{key.fingerprint[0..5]}%", secret_token: secret_token })

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end

    context "sending the key" do
      context "using an existing key" do
        it "finds the key" do
          get(api('/internal/authorized_keys'), params: { key: key.key.split[1], secret_token: secret_token })

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response['id']).to eq(key.id)
          expect(json_response['key'].split[1]).to eq(key.key.split[1])
        end

        it 'exposes the comment of the key as a simple identifier of username + hostname' do
          get(api('/internal/authorized_keys'), params: { fingerprint: key.fingerprint, secret_token: secret_token })

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response['key']).to include("#{key.user_name} (#{Gitlab.config.gitlab.host})")
        end
      end

      it "returns 404 with a partial key" do
        get(api('/internal/authorized_keys'), params: { key: key.key.split[1][0...-3], secret_token: secret_token })

        expect(response).to have_gitlab_http_status(:not_found)
      end

      it "returns 404 with an not valid base64 string" do
        get(api('/internal/authorized_keys'), params: { key: "whatever!", secret_token: secret_token })

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end
  end

  describe "POST /internal/allowed", :clean_gitlab_redis_shared_state do
    context "access granted" do
      let(:env) { {} }

      around do |example|
        Timecop.freeze { example.run }
      end

      before do
        project.add_developer(user)
      end

      shared_examples 'sets hook env' do
        context 'with env passed as a JSON' do
          let(:obj_dir_relative) { './objects' }
          let(:alt_obj_dirs_relative) { ['./alt-objects-1', './alt-objects-2'] }
          let(:env) do
            {
              GIT_OBJECT_DIRECTORY_RELATIVE: obj_dir_relative,
              GIT_ALTERNATE_OBJECT_DIRECTORIES_RELATIVE: alt_obj_dirs_relative
            }
          end

          it 'sets env in RequestStore' do
            expect(Gitlab::Git::HookEnv).to receive(:set).with(gl_repository, env.stringify_keys)

            subject

            expect(response).to have_gitlab_http_status(:ok)
          end
        end
      end

      context "git push with project.wiki" do
        subject { push(key, project.wiki, env: env.to_json) }

        it 'responds with success' do
          subject

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_project_path"]).to eq(project.wiki.full_path)
          expect(json_response["gl_repository"]).to eq("wiki-#{project.id}")
          expect(user.reload.last_activity_on).to be_nil
        end

        it_behaves_like 'sets hook env' do
          let(:gl_repository) { Gitlab::GlRepository::WIKI.identifier_for_container(project) }
        end
      end

      context "git pull with project.wiki" do
        it 'responds with success' do
          pull(key, project.wiki)

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_project_path"]).to eq(project.wiki.full_path)
          expect(json_response["gl_repository"]).to eq("wiki-#{project.id}")
          expect(user.reload.last_activity_on).to eql(Date.today)
        end
      end

      shared_examples 'snippet success' do
        it 'responds with success' do
          subject

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response['status']).to be_truthy
        end
      end

      context 'git push with personal snippet' do
        subject { push(key, personal_snippet, env: env.to_json, changes: snippet_changes) }

        it 'responds with success' do
          subject

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_project_path"]).to eq(personal_snippet.repository.full_path)
          expect(json_response["gl_repository"]).to eq("snippet-#{personal_snippet.id}")
          expect(user.reload.last_activity_on).to be_nil
        end

        it_behaves_like 'sets hook env' do
          let(:gl_repository) { Gitlab::GlRepository::SNIPPET.identifier_for_container(personal_snippet) }
        end
      end

      context 'git pull with personal snippet' do
        subject { pull(key, personal_snippet) }

        it 'responds with success' do
          subject

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_project_path"]).to eq(personal_snippet.repository.full_path)
          expect(json_response["gl_repository"]).to eq("snippet-#{personal_snippet.id}")
          expect(user.reload.last_activity_on).to eql(Date.today)
        end
      end

      context 'git push with project snippet' do
        subject { push(key, project_snippet, env: env.to_json, changes: snippet_changes) }

        it 'responds with success' do
          subject

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_project_path"]).to eq(project_snippet.repository.full_path)
          expect(json_response["gl_repository"]).to eq("snippet-#{project_snippet.id}")
          expect(user.reload.last_activity_on).to be_nil
        end

        it_behaves_like 'sets hook env' do
          let(:gl_repository) { Gitlab::GlRepository::SNIPPET.identifier_for_container(project_snippet) }
        end
      end

      context 'git pull with project snippet' do
        it 'responds with success' do
          pull(key, project_snippet)

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_project_path"]).to eq(project_snippet.repository.full_path)
          expect(json_response["gl_repository"]).to eq("snippet-#{project_snippet.id}")
          expect(user.reload.last_activity_on).to eql(Date.today)
        end
      end

      context "git pull" do
        before do
          stub_feature_flags(gitaly_mep_mep: true)
        end

        it "has the correct payload" do
          pull(key, project)

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gl_repository"]).to eq("project-#{project.id}")
          expect(json_response["gl_project_path"]).to eq(project.full_path)
          expect(json_response["gitaly"]).not_to be_nil
          expect(json_response["gitaly"]["repository"]).not_to be_nil
          expect(json_response["gitaly"]["repository"]["storage_name"]).to eq(project.repository.gitaly_repository.storage_name)
          expect(json_response["gitaly"]["repository"]["relative_path"]).to eq(project.repository.gitaly_repository.relative_path)
          expect(json_response["gitaly"]["address"]).to eq(Gitlab::GitalyClient.address(project.repository_storage))
          expect(json_response["gitaly"]["token"]).to eq(Gitlab::GitalyClient.token(project.repository_storage))
          expect(json_response["gitaly"]["features"]).to eq('gitaly-feature-mep-mep' => 'true')
          expect(user.reload.last_activity_on).to eql(Date.today)
        end
      end

      context "git push" do
        context 'project as namespace/project' do
          it do
            push(key, project)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response["status"]).to be_truthy
            expect(json_response["gl_repository"]).to eq("project-#{project.id}")
            expect(json_response["gl_project_path"]).to eq(project.full_path)
            expect(json_response["gitaly"]).not_to be_nil
            expect(json_response["gitaly"]["repository"]).not_to be_nil
            expect(json_response["gitaly"]["repository"]["storage_name"]).to eq(project.repository.gitaly_repository.storage_name)
            expect(json_response["gitaly"]["repository"]["relative_path"]).to eq(project.repository.gitaly_repository.relative_path)
            expect(json_response["gitaly"]["address"]).to eq(Gitlab::GitalyClient.address(project.repository_storage))
            expect(json_response["gitaly"]["token"]).to eq(Gitlab::GitalyClient.token(project.repository_storage))
            expect(user.reload.last_activity_on).to be_nil
          end
        end

        context 'when receive_max_input_size has been updated' do
          before do
            allow(Gitlab::CurrentSettings).to receive(:receive_max_input_size) { 1 }
          end

          it 'returns maxInputSize and partial clone git config' do
            push(key, project)

            expect(json_response["git_config_options"]).to be_present
            expect(json_response["git_config_options"]).to include("receive.maxInputSize=1048576")
            expect(json_response["git_config_options"]).to include("uploadpack.allowFilter=true")
            expect(json_response["git_config_options"]).to include("uploadpack.allowAnySHA1InWant=true")
          end

          context 'when gitaly_upload_pack_filter feature flag is disabled' do
            before do
              stub_feature_flags(gitaly_upload_pack_filter: false)
            end

            it 'returns only maxInputSize and not partial clone git config' do
              push(key, project)

              expect(json_response["git_config_options"]).to be_present
              expect(json_response["git_config_options"]).to include("receive.maxInputSize=1048576")
              expect(json_response["git_config_options"]).not_to include("uploadpack.allowFilter=true")
              expect(json_response["git_config_options"]).not_to include("uploadpack.allowAnySHA1InWant=true")
            end
          end
        end

        context 'when receive_max_input_size is empty' do
          before do
            allow(Gitlab::CurrentSettings).to receive(:receive_max_input_size) { nil }
          end

          it 'returns partial clone git config' do
            push(key, project)

            expect(json_response["git_config_options"]).to be_present
            expect(json_response["git_config_options"]).to include("uploadpack.allowFilter=true")
            expect(json_response["git_config_options"]).to include("uploadpack.allowAnySHA1InWant=true")
          end

          context 'when gitaly_upload_pack_filter feature flag is disabled' do
            before do
              stub_feature_flags(gitaly_upload_pack_filter: false)
            end

            it 'returns an empty git config' do
              push(key, project)

              expect(json_response["git_config_options"]).to be_empty
            end
          end
        end
      end

      context 'with Project' do
        it_behaves_like 'storing arguments in the application context' do
          let(:expected_params) { { user: key.user.username, project: project.full_path } }

          subject { push(key, project) }
        end
      end

      context 'with PersonalSnippet' do
        it_behaves_like 'storing arguments in the application context' do
          let(:expected_params) { { user: key.user.username } }

          subject { push(key, personal_snippet) }
        end
      end

      context 'with ProjectSnippet' do
        it_behaves_like 'storing arguments in the application context' do
          let(:expected_params) { { user: key.user.username, project: project_snippet.project.full_path } }

          subject { push(key, project_snippet) }
        end
      end
    end

    context "access denied" do
      before do
        project.add_guest(user)
      end

      context "git pull" do
        it do
          pull(key, project)

          expect(response).to have_gitlab_http_status(:unauthorized)
          expect(json_response["status"]).to be_falsey
          expect(user.reload.last_activity_on).to be_nil
        end
      end

      context "git push" do
        it do
          push(key, project)

          expect(response).to have_gitlab_http_status(:unauthorized)
          expect(json_response["status"]).to be_falsey
          expect(user.reload.last_activity_on).to be_nil
        end
      end
    end

    context "custom action" do
      let(:access_checker) { double(Gitlab::GitAccess) }
      let(:payload) do
        {
          'action' => 'geo_proxy_to_primary',
          'data' => {
            'api_endpoints' => %w{geo/proxy_git_ssh/info_refs_receive_pack geo/proxy_git_ssh/receive_pack},
            'gl_username' => 'testuser',
            'primary_repo' => 'http://localhost:3000/testuser/repo.git'
          }
        }
      end
      let(:console_messages) { ['informational message'] }
      let(:custom_action_result) { Gitlab::GitAccessResult::CustomAction.new(payload, console_messages) }

      before do
        project.add_guest(user)
        expect(Gitlab::GitAccess).to receive(:new).with(
          key,
          project,
          'ssh',
          {
            authentication_abilities: [:read_project, :download_code, :push_code],
            namespace_path: project.namespace.path,
            repository_path: project.path,
            redirected_path: nil
          }
        ).and_return(access_checker)
        expect(access_checker).to receive(:check).with(
          'git-receive-pack',
          'd14d6c0abdd253381df51a723d58691b2ee1ab08 570e7b2abdd848b95f2f578043fc23bd6f6fd24d refs/heads/master'
        ).and_return(custom_action_result)
      end

      context "git push" do
        it do
          push(key, project)

          expect(response).to have_gitlab_http_status(:multiple_choices)
          expect(json_response['status']).to be_truthy
          expect(json_response['payload']).to eql(payload)
          expect(json_response['gl_console_messages']).to eql(console_messages)
          expect(user.reload.last_activity_on).to be_nil
        end
      end
    end

    context "console message" do
      before do
        project.add_developer(user)
      end

      context 'git pull' do
        context 'with a key that has expired' do
          let(:key) { create(:key, user: user, expires_at: 2.days.ago) }

          it 'includes the `key expired` message in the response' do
            pull(key, project)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['gl_console_messages']).to eq(['INFO: Your SSH key has expired. Please generate a new key.'])
          end
        end

        context 'with a key that will expire in the next 7 days' do
          let(:key) { create(:key, user: user, expires_at: 2.days.from_now) }

          it 'includes the `key expiring soon` message in the response' do
            pull(key, project)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['gl_console_messages']).to eq(['INFO: Your SSH key is expiring soon. Please generate a new key.'])
          end
        end

        context 'with a key that has no expiry' do
          it 'does not include any message in the response' do
            pull(key, project)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['gl_console_messages']).to eq([])
          end
        end
      end
    end

    context "blocked user" do
      let(:personal_project) { create(:project, namespace: user.namespace) }

      before do
        user.block
      end

      context "git pull" do
        it do
          pull(key, personal_project)

          expect(response).to have_gitlab_http_status(:unauthorized)
          expect(json_response["status"]).to be_falsey
          expect(user.reload.last_activity_on).to be_nil
        end
      end

      context "git push" do
        it do
          push(key, personal_project)

          expect(response).to have_gitlab_http_status(:unauthorized)
          expect(json_response["status"]).to be_falsey
          expect(user.reload.last_activity_on).to be_nil
        end
      end
    end

    context 'request times out' do
      context 'git push' do
        it 'responds with a gateway timeout' do
          personal_project = create(:project, namespace: user.namespace)

          expect_next_instance_of(Gitlab::GitAccess) do |access|
            expect(access).to receive(:check).and_raise(Gitlab::GitAccess::TimeoutError, "Foo")
          end
          push(key, personal_project)

          expect(response).to have_gitlab_http_status(:service_unavailable)
          expect(json_response['status']).to be_falsey
          expect(json_response['message']).to eq("Foo")
          expect(user.reload.last_activity_on).to be_nil
        end
      end
    end

    context "archived project" do
      before do
        project.add_developer(user)
        ::Projects::UpdateService.new(project, user, archived: true).execute
      end

      context "git pull" do
        it do
          pull(key, project)

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
        end
      end

      context "git push" do
        it do
          push(key, project)

          expect(response).to have_gitlab_http_status(:unauthorized)
          expect(json_response["status"]).to be_falsey
        end
      end
    end

    context "deploy key" do
      let(:key) { create(:deploy_key) }

      context "added to project" do
        before do
          key.projects << project
        end

        it do
          archive(key, project)

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response["status"]).to be_truthy
          expect(json_response["gitaly"]).not_to be_nil
          expect(json_response["gitaly"]["repository"]).not_to be_nil
          expect(json_response["gitaly"]["repository"]["storage_name"]).to eq(project.repository.gitaly_repository.storage_name)
          expect(json_response["gitaly"]["repository"]["relative_path"]).to eq(project.repository.gitaly_repository.relative_path)
          expect(json_response["gitaly"]["address"]).to eq(Gitlab::GitalyClient.address(project.repository_storage))
          expect(json_response["gitaly"]["token"]).to eq(Gitlab::GitalyClient.token(project.repository_storage))
        end
      end

      context "not added to project" do
        it do
          archive(key, project)

          expect(response).to have_gitlab_http_status(:not_found)
          expect(json_response["status"]).to be_falsey
        end
      end
    end

    context 'project does not exist' do
      context 'git pull' do
        it 'returns a 200 response with status: false' do
          project.destroy

          pull(key, project)

          expect(response).to have_gitlab_http_status(:not_found)
          expect(json_response["status"]).to be_falsey
        end

        it 'returns a 200 response when using a project path that does not exist' do
          post(
            api("/internal/allowed"),
            params: {
              key_id: key.id,
              project: 'project/does-not-exist.git',
              action: 'git-upload-pack',
              secret_token: secret_token,
              protocol: 'ssh'
            }
          )

          expect(response).to have_gitlab_http_status(:not_found)
          expect(json_response["status"]).to be_falsey
        end
      end

      context 'git push' do
        before do
          stub_const('Gitlab::QueryLimiting::Transaction::THRESHOLD', 120)
        end

        subject { push_with_path(key, full_path: path, changes: '_any') }

        context 'from a user/group namespace' do
          let!(:path) { "#{user.namespace.path}/notexist.git" }

          it 'creates the project' do
            expect do
              subject
            end.to change { Project.count }.by(1)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['status']).to be_truthy
          end
        end

        context 'from the personal snippet path' do
          let!(:path) { 'snippets/notexist.git' }

          it 'does not create snippet' do
            expect do
              subject
            end.not_to change { Snippet.count }

            expect(response).to have_gitlab_http_status(:not_found)
          end
        end

        context 'from a project path' do
          context 'from an non existent project path' do
            let!(:path) { "#{user.namespace.path}/notexist/snippets/notexist.git" }

            it 'does not create project' do
              expect do
                subject
              end.not_to change { Project.count }

              expect(response).to have_gitlab_http_status(:not_found)
            end

            it 'does not create snippet' do
              expect do
                subject
              end.not_to change { Snippet.count }

              expect(response).to have_gitlab_http_status(:not_found)
            end
          end

          context 'from an existent project path' do
            let!(:path) { "#{project.full_path}/notexist/snippets/notexist.git" }

            it 'does not create snippet' do
              expect do
                subject
              end.not_to change { Snippet.count }

              expect(response).to have_gitlab_http_status(:not_found)
            end
          end
        end
      end
    end

    context 'user does not exist' do
      it do
        pull(OpenStruct.new(id: 0), project)

        expect(response).to have_gitlab_http_status(:not_found)
        expect(json_response["status"]).to be_falsey
      end
    end

    context 'ssh access has been disabled' do
      before do
        stub_application_setting(enabled_git_access_protocol: 'http')
      end

      it 'rejects the SSH push' do
        push(key, project)

        expect(response).to have_gitlab_http_status(:unauthorized)
        expect(json_response['status']).to be_falsey
        expect(json_response['message']).to eq 'Git access over SSH is not allowed'
      end

      it 'rejects the SSH pull' do
        pull(key, project)

        expect(response).to have_gitlab_http_status(:unauthorized)
        expect(json_response['status']).to be_falsey
        expect(json_response['message']).to eq 'Git access over SSH is not allowed'
      end
    end

    context 'http access has been disabled' do
      before do
        stub_application_setting(enabled_git_access_protocol: 'ssh')
      end

      it 'rejects the HTTP push' do
        push(key, project, 'http')

        expect(response).to have_gitlab_http_status(:unauthorized)
        expect(json_response['status']).to be_falsey
        expect(json_response['message']).to eq 'Git access over HTTP is not allowed'
      end

      it 'rejects the HTTP pull' do
        pull(key, project, 'http')

        expect(response).to have_gitlab_http_status(:unauthorized)
        expect(json_response['status']).to be_falsey
        expect(json_response['message']).to eq 'Git access over HTTP is not allowed'
      end
    end

    context 'web actions are always allowed' do
      it 'allows WEB push' do
        stub_application_setting(enabled_git_access_protocol: 'ssh')
        project.add_developer(user)
        push(key, project, 'web')

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['status']).to be_truthy
      end
    end

    context 'the project path was changed' do
      let(:project) { create(:project, :repository, :legacy_storage) }
      let!(:repository) { project.repository }

      before do
        project.add_developer(user)
        project.path = 'new_path'
        project.save!
      end

      it 'rejects the push' do
        push(key, project)

        expect(response).to have_gitlab_http_status(:not_found)
        expect(json_response['status']).to be_falsy
      end

      it 'rejects the SSH pull' do
        pull(key, project)

        expect(response).to have_gitlab_http_status(:not_found)
        expect(json_response['status']).to be_falsy
      end
    end

    context 'for design repositories' do
      let(:gl_repository) { Gitlab::GlRepository::DESIGN.identifier_for_container(project) }

      it 'does not allow access' do
        post(api('/internal/allowed'),
             params: {
               key_id: key.id,
               project: project.full_path,
               gl_repository: gl_repository,
               secret_token: secret_token,
               protocol: 'ssh'
             })

        expect(response).to have_gitlab_http_status(:unauthorized)
      end
    end
  end

  describe 'POST /internal/post_receive', :clean_gitlab_redis_shared_state do
    let(:identifier) { 'key-123' }
    let(:branch_name) { 'feature' }
    let(:push_options) { ['ci.skip', 'another push option'] }

    let(:valid_params) do
      {
        gl_repository: gl_repository,
        secret_token: secret_token,
        identifier: identifier,
        changes: changes,
        push_options: push_options
      }
    end

    let(:changes) do
      "#{Gitlab::Git::BLANK_SHA} 570e7b2abdd848b95f2f578043fc23bd6f6fd24d refs/heads/#{branch_name}"
    end

    subject { post api('/internal/post_receive'), params: valid_params }

    before do
      project.add_developer(user)
      allow_any_instance_of(Gitlab::Identifier).to receive(:identify).and_return(user)
    end

    context 'with Project' do
      it 'executes PostReceiveService' do
        message = <<~MESSAGE.strip
          To create a merge request for #{branch_name}, visit:
            http://#{Gitlab.config.gitlab.host}/#{project.full_path}/-/merge_requests/new?merge_request%5Bsource_branch%5D=#{branch_name}
        MESSAGE

        subject

        expect(json_response).to eq({
          'messages' => [{ 'message' => message, 'type' => 'basic' }],
          'reference_counter_decreased' => true
        })
      end

      it_behaves_like 'storing arguments in the application context' do
        let(:expected_params) { { user: user.username, project: project.full_path } }
      end
    end

    context 'with PersonalSnippet' do
      let(:gl_repository) { "snippet-#{personal_snippet.id}" }

      it 'executes PostReceiveService' do
        subject

        expect(json_response).to eq({
          'messages' => [],
          'reference_counter_decreased' => true
        })
      end

      it_behaves_like 'storing arguments in the application context' do
        let(:expected_params) { { user: key.user.username } }
        let(:gl_repository) { "snippet-#{personal_snippet.id}" }
      end
    end

    context 'with ProjectSnippet' do
      let(:gl_repository) { "snippet-#{project_snippet.id}" }

      it 'executes PostReceiveService' do
        subject

        expect(json_response).to eq({
          'messages' => [],
          'reference_counter_decreased' => true
        })
      end

      it_behaves_like 'storing arguments in the application context' do
        let(:expected_params) { { user: key.user.username, project: project_snippet.project.full_path } }
        let(:gl_repository) { "snippet-#{project_snippet.id}" }
      end
    end

    context 'with an orphaned write deploy key' do
      it 'does not try to notify that project moved' do
        allow_any_instance_of(Gitlab::Identifier).to receive(:identify).and_return(nil)

        expect(Gitlab::Checks::ProjectMoved).not_to receive(:fetch_message)

        subject

        expect(response).to have_gitlab_http_status(:ok)
      end
    end

    context 'when project is nil' do
      context 'with Project' do
        let(:gl_repository) { 'project-foo' }

        it 'does not try to notify that project moved' do
          allow(Gitlab::GlRepository).to receive(:parse).and_return([nil, nil, Gitlab::GlRepository::PROJECT])

          expect(Gitlab::Checks::ProjectMoved).not_to receive(:fetch_message)

          subject

          expect(response).to have_gitlab_http_status(:ok)
        end
      end

      context 'with PersonalSnippet' do
        let(:gl_repository) { "snippet-#{personal_snippet.id}" }

        it 'does not try to notify that project moved' do
          allow(Gitlab::GlRepository).to receive(:parse).and_return([personal_snippet, nil, Gitlab::GlRepository::PROJECT])

          expect(Gitlab::Checks::ProjectMoved).not_to receive(:fetch_message)

          subject

          expect(response).to have_gitlab_http_status(:ok)
        end
      end
    end
  end

  describe 'POST /internal/pre_receive' do
    let(:valid_params) do
      { gl_repository: gl_repository, secret_token: secret_token }
    end

    it 'decreases the reference counter and returns the result' do
      expect(Gitlab::ReferenceCounter).to receive(:new).with(gl_repository)
        .and_return(reference_counter)
      expect(reference_counter).to receive(:increase).and_return(true)

      post api("/internal/pre_receive"), params: valid_params

      expect(json_response['reference_counter_increased']).to be(true)
    end
  end

  def gl_repository_for(container)
    case container
    when ProjectWiki
      Gitlab::GlRepository::WIKI.identifier_for_container(container.project)
    when Project
      Gitlab::GlRepository::PROJECT.identifier_for_container(container)
    when Snippet
      Gitlab::GlRepository::SNIPPET.identifier_for_container(container)
    else
      nil
    end
  end

  def full_path_for(container)
    case container
    when PersonalSnippet
      "snippets/#{container.id}"
    when ProjectSnippet
      "#{container.project.full_path}/snippets/#{container.id}"
    else
      container.full_path
    end
  end

  def pull(key, container, protocol = 'ssh')
    post(
      api("/internal/allowed"),
      params: {
        key_id: key.id,
        project: full_path_for(container),
        gl_repository: gl_repository_for(container),
        action: 'git-upload-pack',
        secret_token: secret_token,
        protocol: protocol
      }
    )
  end

  def push(key, container, protocol = 'ssh', env: nil, changes: nil)
    push_with_path(key,
                   full_path: full_path_for(container),
                   gl_repository: gl_repository_for(container),
                   protocol: protocol,
                   env: env,
                   changes: changes)
  end

  def push_with_path(key, full_path:, gl_repository: nil, protocol: 'ssh', env: nil, changes: nil)
    changes ||= 'd14d6c0abdd253381df51a723d58691b2ee1ab08 570e7b2abdd848b95f2f578043fc23bd6f6fd24d refs/heads/master'

    params = {
      changes: changes,
      key_id: key.id,
      project: full_path,
      action: 'git-receive-pack',
      secret_token: secret_token,
      protocol: protocol,
      env: env
    }
    params[:gl_repository] = gl_repository if gl_repository

    post(
      api("/internal/allowed"),
      params: params
    )
  end

  def archive(key, container)
    post(
      api("/internal/allowed"),
      params: {
        ref: 'master',
        key_id: key.id,
        project: full_path_for(container),
        gl_repository: gl_repository_for(container),
        action: 'git-upload-archive',
        secret_token: secret_token,
        protocol: 'ssh'
      }
    )
  end

  def lfs_auth_project(project)
    post(
      api("/internal/lfs_authenticate"),
      params: {
        secret_token: secret_token,
        project: project.full_path
      }
    )
  end

  def lfs_auth_key(key_id, project)
    post(
      api("/internal/lfs_authenticate"),
      params: {
        key_id: key_id,
        secret_token: secret_token,
        project: project.full_path
      }
    )
  end

  def lfs_auth_user(user_id, project)
    post(
      api("/internal/lfs_authenticate"),
      params: {
        user_id: user_id,
        secret_token: secret_token,
        project: project.full_path
      }
    )
  end
end