Merge branch 'bb-wiki-import' into 'master'

Add Wiki import to BB importer

## What does this MR do?

Adds wiki importing



- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/25819

See merge request !8180

3 files changed, 25 insertions, 1 deletions

diff --git a/lib/bitbucket/representation/repo.rb b/lib/bitbucket/representation/repo.rb
index 8969ecd1c19..423eff8f2a5 100644
--- a/lib/bitbucket/representation/repo.rb
+++ b/lib/bitbucket/representation/repo.rb
@@ -51,6 +51,10 @@ module Bitbucket
         raw['scm'] == 'git'
       end
 
+      def has_wiki?
+        raw['has_wiki']
+      end
+
       def visibility_level
         if raw['is_private']
           Gitlab::VisibilityLevel::PRIVATE
diff --git a/lib/gitlab/bitbucket_import/importer.rb b/lib/gitlab/bitbucket_import/importer.rb
index 7d2f92d577a..44323b47dca 100644
--- a/lib/gitlab/bitbucket_import/importer.rb
+++ b/lib/gitlab/bitbucket_import/importer.rb
@@ -1,6 +1,8 @@
 module Gitlab
   module BitbucketImport
     class Importer
+      include Gitlab::ShellAdapter
+
       LABELS = [{ title: 'bug', color: '#FF0000' },
                 { title: 'enhancement', color: '#428BCA' },
                 { title: 'proposal', color: '#69D100' },
@@ -18,6 +20,7 @@ module Gitlab
       end
 
       def execute
+        import_wiki
         import_issues
         import_pull_requests
         handle_errors
@@ -55,6 +58,16 @@ module Gitlab
         @repo ||= client.repo(project.import_source)
       end
 
+      def import_wiki
+        return if project.wiki.repository_exists?
+
+        path_with_namespace = "#{project.path_with_namespace}.wiki"
+        import_url = project.import_url.sub(/\.git\z/, ".git/wiki")
+        gitlab_shell.import_repository(project.repository_storage_path, path_with_namespace, import_url)
+      rescue StandardError => e
+        errors << { type: :wiki, errors: e.message }
+      end
+
       def import_issues
         return unless repo.issues_enabled?
 
diff --git a/lib/gitlab/bitbucket_import/project_creator.rb b/lib/gitlab/bitbucket_import/project_creator.rb
index eb03882ab26..d94f70fd1fb 100644
--- a/lib/gitlab/bitbucket_import/project_creator.rb
+++ b/lib/gitlab/bitbucket_import/project_creator.rb
@@ -22,9 +22,16 @@ module Gitlab
           import_type: 'bitbucket',
           import_source: repo.full_name,
           import_url: repo.clone_url(session_data[:token]),
-          import_data: { credentials: session_data }
+          import_data: { credentials: session_data },
+          skip_wiki: skip_wiki
         ).execute
       end
+
+      private
+
+      def skip_wiki
+        repo.has_wiki?
+      end
     end
   end
 end