API for importing external repos

2 files changed, 83 insertions, 0 deletions

diff --git a/app/services/import/base_service.rb b/app/services/import/base_service.rb
new file mode 100644
index 00000000000..2683c75e41f
--- /dev/null
+++ b/app/services/import/base_service.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module Import
+  class BaseService < ::BaseService
+    def initialize(client, user, params)
+      @client = client
+      @current_user = user
+      @params = params
+    end
+
+    private
+
+    def find_or_create_namespace(namespace, owner)
+      namespace = params[:target_namespace].presence || namespace
+
+      return current_user.namespace if namespace == owner
+
+      group = Groups::NestedCreateService.new(current_user, group_path: namespace).execute
+
+      group.errors.any? ? current_user.namespace : group
+    rescue => e
+      Gitlab::AppLogger.error(e)
+
+      current_user.namespace
+    end
+
+    def project_save_error(project)
+      project.errors.full_messages.join(', ')
+    end
+
+    def success(project)
+      super().merge(project: project, status: :success)
+    end
+  end
+end
diff --git a/app/services/import/github_service.rb b/app/services/import/github_service.rb
new file mode 100644
index 00000000000..a2533683da9
--- /dev/null
+++ b/app/services/import/github_service.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+module Import
+  class GithubService < Import::BaseService
+    attr_accessor :client
+    attr_reader :params, :current_user
+
+    def execute(access_params, provider)
+      unless authorized?
+        return error('This namespace has already been taken! Please choose another one.', :unprocessable_entity)
+      end
+
+      project = Gitlab::LegacyGithubImport::ProjectCreator
+                  .new(repo, project_name, target_namespace, current_user, access_params, type: provider)
+                  .execute(extra_project_attrs)
+
+      if project.persisted?
+        success(project)
+      else
+        error(project_save_error(project), :unprocessable_entity)
+      end
+    end
+
+    def repo
+      @repo ||= client.repo(params[:repo_id].to_i)
+    end
+
+    def project_name
+      @project_name ||= params[:new_name].presence || repo.name
+    end
+
+    def namespace_path
+      @namespace_path ||= params[:target_namespace].presence || current_user.namespace_path
+    end
+
+    def target_namespace
+      @target_namespace ||= find_or_create_namespace(namespace_path, current_user.namespace_path)
+    end
+
+    def extra_project_attrs
+      {}
+    end
+
+    def authorized?
+      can?(current_user, :create_projects, target_namespace)
+    end
+  end
+end