1 files changed, 88 insertions, 0 deletions
diff --git a/lib/gitlab/bitbucket_import/importers/pull_request_importer.rb b/lib/gitlab/bitbucket_import/importers/pull_request_importer.rb
new file mode 100644
index 00000000000..d76e08e1039
--- /dev/null
+++ b/lib/gitlab/bitbucket_import/importers/pull_request_importer.rb
@@ -0,0 +1,88 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module BitbucketImport
+    module Importers
+      class PullRequestImporter
+        include Loggable
+
+        def initialize(project, hash)
+          @project = project
+          @formatter = Gitlab::ImportFormatter.new
+          @user_finder = UserFinder.new(project)
+          @object = hash.with_indifferent_access
+        end
+
+        def execute
+          log_info(import_stage: 'import_pull_request', message: 'starting', iid: object[:iid])
+
+          description = ''
+          description += author_line
+          description += object[:description] if object[:description]
+
+          attributes = {
+            iid: object[:iid],
+            title: object[:title],
+            description: description,
+            source_project_id: project.id,
+            source_branch: Gitlab::Git.ref_name(object[:source_branch_name]),
+            source_branch_sha: source_branch_sha,
+            target_project_id: project.id,
+            target_branch: Gitlab::Git.ref_name(object[:target_branch_name]),
+            target_branch_sha: object[:target_branch_sha],
+            state_id: MergeRequest.available_states[object[:state]],
+            author_id: author_id,
+            created_at: object[:created_at],
+            updated_at: object[:updated_at]
+          }
+
+          creator = Gitlab::Import::MergeRequestCreator.new(project)
+
+          merge_request = creator.execute(attributes)
+
+          if merge_request
+            merge_request.assignee_ids = [author_id]
+            merge_request.reviewer_ids = reviewers
+            merge_request.save!
+          end
+
+          log_info(import_stage: 'import_pull_request', message: 'finished', iid: object[:iid])
+        rescue StandardError => e
+          Gitlab::Import::ImportFailureService.track(project_id: project.id, exception: e)
+        end
+
+        private
+
+        attr_reader :object, :project, :formatter, :user_finder
+
+        def author_line
+          return '' if find_user_id
+
+          formatter.author_line(object[:author])
+        end
+
+        def find_user_id
+          user_finder.find_user_id(object[:author])
+        end
+
+        def author_id
+          user_finder.gitlab_user_id(project, object[:author])
+        end
+
+        def reviewers
+          return [] unless object[:reviewers].present?
+
+          object[:reviewers].filter_map do |reviewer|
+            user_finder.find_user_id(reviewer)
+          end
+        end
+
+        def source_branch_sha
+          project.repository.commit(object[:source_branch_sha])&.sha ||
+            project.repository.commit(object[:merge_commit_sha])&.sha ||
+            object[:source_branch_sha]
+        end
+      end
+    end
+  end
+end