1 files changed, 85 insertions, 0 deletions
diff --git a/app/controllers/projects/google_cloud/service_accounts_controller.rb b/app/controllers/projects/google_cloud/service_accounts_controller.rb
new file mode 100644
index 00000000000..a69a744154c
--- /dev/null
+++ b/app/controllers/projects/google_cloud/service_accounts_controller.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+class Projects::GoogleCloud::ServiceAccountsController < Projects::GoogleCloud::BaseController
+  before_action :validate_gcp_token!
+
+  def index
+    @google_cloud_path = project_google_cloud_index_path(project)
+    google_api_client = GoogleApi::CloudPlatform::Client.new(token_in_session, nil)
+    gcp_projects = google_api_client.list_projects
+
+    if gcp_projects.empty?
+      @js_data = { screen: 'no_gcp_projects' }.to_json
+      render status: :unauthorized, template: 'projects/google_cloud/errors/no_gcp_projects'
+    else
+      @js_data = {
+        screen: 'service_accounts_form',
+        gcpProjects: gcp_projects,
+        environments: project.environments,
+        cancelPath: project_google_cloud_index_path(project)
+      }.to_json
+    end
+  rescue Google::Apis::ClientError => error
+    handle_gcp_error(error, project)
+  end
+
+  def create
+    google_api_client = GoogleApi::CloudPlatform::Client.new(token_in_session, nil)
+    service_accounts_service = GoogleCloud::ServiceAccountsService.new(project)
+    gcp_project = params[:gcp_project]
+    environment = params[:environment]
+    generated_name = "GitLab :: #{@project.name} :: #{environment}"
+    generated_desc = "GitLab generated service account for project '#{@project.name}' and environment '#{environment}'"
+
+    service_account = google_api_client.create_service_account(gcp_project, generated_name, generated_desc)
+    service_account_key = google_api_client.create_service_account_key(gcp_project, service_account.unique_id)
+
+    service_accounts_service.add_for_project(
+      environment,
+      service_account.project_id,
+      service_account.to_json,
+      service_account_key.to_json
+    )
+
+    redirect_to project_google_cloud_index_path(project), notice: _('Service account generated successfully')
+  rescue Google::Apis::ClientError, Google::Apis::ServerError, Google::Apis::AuthorizationError => error
+    handle_gcp_error(error, project)
+  end
+
+  private
+
+  def validate_gcp_token!
+    is_token_valid = GoogleApi::CloudPlatform::Client.new(token_in_session, nil)
+                                                     .validate_token(expires_at_in_session)
+
+    return if is_token_valid
+
+    return_url = project_google_cloud_index_path(project)
+    state = generate_session_key_redirect(request.url, return_url)
+    @authorize_url = GoogleApi::CloudPlatform::Client.new(nil,
+                                                          callback_google_api_auth_url,
+                                                          state: state).authorize_url
+    redirect_to @authorize_url
+  end
+
+  def generate_session_key_redirect(uri, error_uri)
+    GoogleApi::CloudPlatform::Client.new_session_key_for_redirect_uri do |key|
+      session[key] = uri
+      session[:error_uri] = error_uri
+    end
+  end
+
+  def token_in_session
+    session[GoogleApi::CloudPlatform::Client.session_key_for_token]
+  end
+
+  def expires_at_in_session
+    session[GoogleApi::CloudPlatform::Client.session_key_for_expires_at]
+  end
+
+  def handle_gcp_error(error, project)
+    Gitlab::ErrorTracking.track_exception(error, project_id: project.id)
+    @js_data = { screen: 'gcp_error', error: error.to_s }.to_json
+    render status: :unauthorized, template: 'projects/google_cloud/errors/gcp_error'
+  end
+end