refactored import stuff, moved to lib

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/gitlab/import_export/members_mapper.rb b/lib/gitlab/import_export/members_mapper.rb
new file mode 100644
index 00000000000..d6124106f57
--- /dev/null
+++ b/lib/gitlab/import_export/members_mapper.rb
@@ -0,0 +1,59 @@
+module Gitlab
+  module ImportExport
+    class MembersMapper
+
+      def self.map(*args)
+        new(*args).map
+      end
+
+      def initialize(exported_members:, user:, project_id:)
+        @exported_members = exported_members
+        @user = user
+        @project_id = project_id
+      end
+
+      def map
+        @project_member_map = Hash.new(default_project_member)
+        @exported_members.each do |member|
+          existing_user = User.where(find_project_user_query(member)).first
+          assign_member(existing_user, member) if existing_user
+        end
+        @project_member_map
+      end
+
+      private
+
+      def assign_member(existing_user, member)
+        old_user_id = member['user']['id']
+        member['user'] = existing_user
+        project_member = ProjectMember.new(member_hash(member))
+        @project_member_map[old_user_id] = project_member.user.id if project_member.save
+      end
+
+      def member_hash(member)
+        member.except('id').merge(source_id: @project_id)
+      end
+
+      #TODO: If default, then we need to leave a comment 'Comment by <original username>' on comments
+      def default_project_member
+        @default_project_member ||=
+          begin
+            default_member = ProjectMember.new(default_project_member_hash)
+            default_member.user.id if default_member.save
+          end
+      end
+
+      def default_project_member_hash
+        { user: @user, access_level: ProjectMember::MASTER, source_id: @project_id }
+      end
+
+      def find_project_user_query(member)
+        user_arel[:username].eq(member['user']['username']).or(user_arel[:email].eq(member['user']['email']))
+      end
+
+      def user_arel
+        @user_arel ||= User.arel_table
+      end
+    end
+  end
+end