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path: root/lib/api/v3/branches.rb
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require 'mime/types'

module API
  module V3
    class Branches < Grape::API
      before { authenticate! }
      before { authorize! :download_code, user_project }

      params do
        requires :id, type: String, desc: 'The ID of a project'
      end
      resource :projects, requirements: { id: %r{[^/]+} } do
        desc 'Get a project repository branches' do
          success ::API::Entities::Branch
        end
        get ":id/repository/branches" do
          Gitlab::QueryLimiting.whitelist('https://gitlab.com/gitlab-org/gitlab-ce/issues/42276')

          repository = user_project.repository
          branches = repository.branches.sort_by(&:name)
          merged_branch_names = repository.merged_branch_names(branches.map(&:name))

          present branches, with: ::API::Entities::Branch, project: user_project, merged_branch_names: merged_branch_names
        end

        desc 'Delete a branch'
        params do
          requires :branch, type: String, desc: 'The name of the branch'
        end
        delete ":id/repository/branches/:branch", requirements: { branch: /.+/ } do
          authorize_push_project

          result = DeleteBranchService.new(user_project, current_user)
                   .execute(params[:branch])

          if result[:status] == :success
            status(200)
            {
              branch_name: params[:branch]
            }
          else
            render_api_error!(result[:message], result[:return_code])
          end
        end

        desc 'Delete all merged branches'
        delete ":id/repository/merged_branches" do
          DeleteMergedBranchesService.new(user_project, current_user).async_execute

          status(200)
        end

        desc 'Create branch' do
          success ::API::Entities::Branch
        end
        params do
          requires :branch_name, type: String, desc: 'The name of the branch'
          requires :ref, type: String, desc: 'Create branch from commit sha or existing branch'
        end
        post ":id/repository/branches" do
          authorize_push_project
          result = CreateBranchService.new(user_project, current_user)
            .execute(params[:branch_name], params[:ref])

          if result[:status] == :success
            present result[:branch],
              with: ::API::Entities::Branch,
              project: user_project
          else
            render_api_error!(result[:message], 400)
          end
        end
      end
    end
  end
end