module API
  module V3
    class DeployKeys < Grape::API
      before { authenticate! }

      get "deploy_keys" do
        authenticated_as_admin!

        keys = DeployKey.all
        present keys, with: ::API::Entities::SSHKey
      end

      params do
        requires :id, type: String, desc: 'The ID of the project'
      end
      resource :projects, requirements: { id: %r{[^/]+} } do
        before { authorize_admin_project }

        %w(keys deploy_keys).each do |path|
          desc "Get a specific project's deploy keys" do
            success ::API::Entities::SSHKey
          end
          get ":id/#{path}" do
            present user_project.deploy_keys, with: ::API::Entities::SSHKey
          end

          desc 'Get single deploy key' do
            success ::API::Entities::SSHKey
          end
          params do
            requires :key_id, type: Integer, desc: 'The ID of the deploy key'
          end
          get ":id/#{path}/:key_id" do
            key = user_project.deploy_keys.find params[:key_id]
            present key, with: ::API::Entities::SSHKey
          end

          desc 'Add new deploy key to currently authenticated user' do
            success ::API::Entities::SSHKey
          end
          params do
            requires :key, type: String, desc: 'The new deploy key'
            requires :title, type: String, desc: 'The name of the deploy key'
            optional :can_push, type: Boolean, desc: "Can deploy key push to the project's repository"
          end
          post ":id/#{path}" do
            params[:key].strip!

            # Check for an existing key joined to this project
            key = user_project.deploy_keys.find_by(key: params[:key])
            if key
              present key, with: ::API::Entities::SSHKey
              break
            end

            # Check for available deploy keys in other projects
            key = current_user.accessible_deploy_keys.find_by(key: params[:key])
            if key
              user_project.deploy_keys << key
              present key, with: ::API::Entities::SSHKey
              break
            end

            # Create a new deploy key
            key = DeployKey.new(declared_params(include_missing: false))
            if key.valid? && user_project.deploy_keys << key
              present key, with: ::API::Entities::SSHKey
            else
              render_validation_error!(key)
            end
          end

          desc 'Enable a deploy key for a project' do
            detail 'This feature was added in GitLab 8.11'
            success ::API::Entities::SSHKey
          end
          params do
            requires :key_id, type: Integer, desc: 'The ID of the deploy key'
          end
          post ":id/#{path}/:key_id/enable" do
            key = ::Projects::EnableDeployKeyService.new(user_project,
                                                          current_user, declared_params).execute

            if key
              present key, with: ::API::Entities::SSHKey
            else
              not_found!('Deploy Key')
            end
          end

          desc 'Disable a deploy key for a project' do
            detail 'This feature was added in GitLab 8.11'
            success ::API::Entities::SSHKey
          end
          params do
            requires :key_id, type: Integer, desc: 'The ID of the deploy key'
          end
          delete ":id/#{path}/:key_id/disable" do
            key = user_project.deploy_keys_projects.find_by(deploy_key_id: params[:key_id])
            key.destroy

            present key.deploy_key, with: ::API::Entities::SSHKey
          end

          desc 'Delete deploy key for a project' do
            success Key
          end
          params do
            requires :key_id, type: Integer, desc: 'The ID of the deploy key'
          end
          delete ":id/#{path}/:key_id" do
            key = user_project.deploy_keys_projects.find_by(deploy_key_id: params[:key_id])
            if key
              key.destroy
            else
              not_found!('Deploy Key')
            end
          end
        end
      end
    end
  end
end