# frozen_string_literal: true

module API
  class Releases < ::API::Base
    include PaginationParams

    releases_tags = %w[releases]

    RELEASE_ENDPOINT_REQUIREMENTS = API::NAMESPACE_OR_PROJECT_REQUIREMENTS
      .merge(tag_name: API::NO_SLASH_URL_PART_REGEX)
    RELEASE_CLI_USER_AGENT = 'GitLab-release-cli'

    feature_category :release_orchestration
    urgency :low

    params do
      requires :id, types: [String, Integer], desc: 'The ID or URL-encoded path of the group'
    end
    resource :groups, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
      before { authorize_read_group_releases! }

      desc 'List group releases' do
        detail 'Returns a list of group releases.'
        success Entities::Release
        failure [
          { code: 400, message: 'Bad request' },
          { code: 403, message: 'Forbidden' },
          { code: 404, message: 'Not found' }
        ]
        is_array true
        tags releases_tags
      end
      params do
        requires :id,
          types: [String, Integer],
          desc: 'The ID or URL-encoded path of the group owned by the authenticated user'

        optional :sort,
          type: String,
          values: %w[asc desc],
          default: 'desc',
          desc: 'The direction of the order. Either `desc` (default) for descending order or `asc` for ascending order'

        optional :simple,
          type: Boolean,
          default: false,
          desc: 'Return only limited fields for each release'

        use :pagination
      end
      get ":id/releases" do
        finder_options = {
          sort: params[:sort]
        }

        strict_params = declared_params(include_missing: false)
        releases = find_group_releases(finder_options)

        present_group_releases(strict_params, releases)
      end
    end

    params do
      requires :id, types: [String, Integer], desc: 'The ID or URL-encoded path of the project'
    end
    resource :projects, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
      before { authorize_read_releases! }

      after { track_release_event }

      desc 'List Releases' do
        detail 'Returns a paginated list of releases. This feature was introduced in GitLab 11.7.'
        named 'get_releases'
        is_array true
        success Entities::Release
        tags releases_tags
      end
      params do
        use :pagination

        optional :order_by,
          type: String,
          values: %w[released_at created_at],
          default: 'released_at',
          desc: 'The field to use as order. Either `released_at` (default) or `created_at`'

        optional :sort,
          type: String,
          values: %w[asc desc],
          default: 'desc',
          desc: 'The direction of the order. Either `desc` (default) for descending order or `asc` for ascending order'

        optional :include_html_description,
          type: Boolean,
          desc: 'If `true`, a response includes HTML rendered markdown of the release description'
      end
      route_setting :authentication, job_token_allowed: true
      get ':id/releases' do
        releases = ::ReleasesFinder.new(user_project, current_user, declared_params.slice(:order_by, :sort)).execute

        # We cache the serialized payload per user in order to avoid repeated renderings.
        # Since the cached result could contain sensitive information,
        # it will expire in a short interval.
        present_cached paginate(releases),
                        with: Entities::Release,
                        # `current_user` could be absent if the releases are publicly accesible.
                        # We should not use `cache_key` for the user because the version/updated_at
                        # context is unnecessary here.
                        cache_context: -> (_) { "user:{#{current_user&.id}}" },
                        expires_in: 5.minutes,
                        current_user: current_user,
                        include_html_description: params[:include_html_description]
      end

      desc 'Get a release by a tag name' do
        detail 'Gets a release for the given tag. This feature was introduced in GitLab 11.7.'
        named 'get_release'
        success Entities::Release
        failure [
          { code: 401, message: 'Unauthorized' },
          { code: 404, message: 'Not found' }
        ]
        tags releases_tags
      end
      params do
        requires :tag_name, type: String, desc: 'The Git tag the release is associated with', as: :tag

        optional :include_html_description,
          type: Boolean,
          desc: 'If `true`, a response includes HTML rendered markdown of the release description'
      end
      route_setting :authentication, job_token_allowed: true
      get ':id/releases/:tag_name', requirements: RELEASE_ENDPOINT_REQUIREMENTS do
        authorize_download_code!

        not_found! unless release

        present release, with: Entities::Release, current_user: current_user, include_html_description: params[:include_html_description]
      end

      desc 'Download a project release asset file' do
        detail 'This feature was introduced in GitLab 15.4.'
        named 'download_release_asset_file'
        failure [
          { code: 401, message: 'Unauthorized' },
          { code: 404, message: 'Not found' }
        ]
        tags releases_tags
      end
      params do
        requires :tag_name, type: String, desc: 'The Git tag the release is associated with', as: :tag

        requires :file_path,
          type: String,
          file_path: true,
          desc: 'The path to the file to download, as specified when creating the release asset'
      end
      route_setting :authentication, job_token_allowed: true
      get ':id/releases/:tag_name/downloads/*file_path', format: false, requirements: RELEASE_ENDPOINT_REQUIREMENTS do
        authorize_download_code!

        not_found! unless release

        link = release.links.find_by_filepath!("/#{params[:file_path]}")

        not_found! unless link

        redirect link.url
      end

      desc 'Get the latest project release' do
        detail 'This feature was introduced in GitLab 15.4.'
        named 'get_latest_release'
        failure [
          { code: 401, message: 'Unauthorized' },
          { code: 404, message: 'Not found' }
        ]
        tags releases_tags
      end
      params do
        requires :suffix_path,
          type: String,
          file_path: true,
          desc: 'The path to be suffixed to the latest release'
      end
      route_setting :authentication, job_token_allowed: true
      get ':id/releases/permalink/latest(/)(*suffix_path)', format: false, requirements: RELEASE_ENDPOINT_REQUIREMENTS do
        authorize_download_code!

        # Try to find the latest release
        latest_release = find_latest_release
        not_found! unless latest_release

        # Build the full API URL with the tag of the latest release
        redirect_url = api_v4_projects_releases_path(id: user_project.id, tag_name: latest_release.tag)

        # Include the additional suffix_path if present
        redirect_url += "/#{params[:suffix_path]}" if params[:suffix_path].present?

        # Include any query parameter except `order_by` since we have plans to extend it in the future.
        # See https://gitlab.com/gitlab-org/gitlab/-/issues/352945 for reference.
        query_parameters_except_order_by = get_query_params.except('order_by')

        if query_parameters_except_order_by.present?
          redirect_url += "?#{query_parameters_except_order_by.compact.to_param}"
        end

        redirect redirect_url
      end

      desc 'Create a release' do
        detail 'Creates a release. Developer level access to the project is required to create a release. This feature was introduced in GitLab 11.7.'
        named 'create_release'
        success Entities::Release
        failure [
          { code: 400, message: 'Bad request' },
          { code: 401, message: 'Unauthorized' },
          { code: 403, message: 'Forbidden' },
          { code: 404, message: 'Not found' },
          { code: 409, message: 'Conflict' },
          { code: 422, message: 'Unprocessable entity' }
        ]
        tags releases_tags
      end
      params do
        requires :tag_name,    type: String, desc: 'The tag where the release is created from', as: :tag
        optional :tag_message, type: String, desc: 'Message to use if creating a new annotated tag'
        optional :name,        type: String, desc: 'The release name'
        optional :description, type: String, desc: 'The description of the release. You can use Markdown'

        optional :ref,
          type: String,
          desc: "If a tag specified in `tag_name` doesn't exist, the release is created from `ref` and tagged " \
                "with `tag_name`. It can be a commit SHA, another tag name, or a branch name."

        optional :assets, type: Hash do
          optional :links, type: Array do
            requires :name, type: String, desc: 'The name of the link. Link names must be unique within the release'
            requires :url, type: String, desc: 'The URL of the link. Link URLs must be unique within the release'
            optional :filepath, type: String, desc: 'Optional path for a direct asset link'
            optional :link_type, type: String, desc: 'The type of the link: `other`, `runbook`, `image`, `package`. Defaults to `other`'
          end
        end

        optional :milestones,
          type: Array[String],
          coerce_with: ::API::Validations::Types::CommaSeparatedToArray.coerce,
          desc: 'The title of each milestone the release is associated with. GitLab Premium customers can specify group milestones',
          default: []

        optional :released_at,
          type: DateTime,
          desc: 'Date and time for the release. Defaults to the current time. Expected in ISO 8601 format (`2019-03-15T08:00:00Z`). ' \
                'Only provide this field if creating an upcoming or historical release.'
      end
      route_setting :authentication, job_token_allowed: true
      post ':id/releases' do
        authorize_create_release!

        result = ::Releases::CreateService
          .new(user_project, current_user, declared_params(include_missing: false))
          .execute

        if result[:status] == :success
          log_release_created_audit_event(result[:release])

          present result[:release], with: Entities::Release, current_user: current_user
        else
          render_api_error!(result[:message], result[:http_status])
        end
      end

      desc 'Update a release' do
        detail 'Updates a release. Developer level access to the project is required to update a release. This feature was introduced in GitLab 11.7.'
        named 'update_release'
        success Entities::Release
        failure [
          { code: 400, message: 'Bad request' },
          { code: 401, message: 'Unauthorized' },
          { code: 403, message: 'Forbidden' },
          { code: 404, message: 'Not found' }
        ]
        tags releases_tags
      end
      params do
        requires :tag_name,    type: String, desc: 'The Git tag the release is associated with', as: :tag
        optional :name,        type: String, desc: 'The release name'
        optional :description, type: String, desc: 'The description of the release. You can use Markdown'
        optional :released_at, type: DateTime, desc: 'The date when the release is/was ready. Expected in ISO 8601 format (`2019-03-15T08:00:00Z`)'

        optional :milestones,
          type: Array[String],
          coerce_with: ::API::Validations::Types::CommaSeparatedToArray.coerce,
          desc: 'The title of each milestone to associate with the release. GitLab Premium customers can specify group milestones. To remove all milestones from the release, specify `[]`'
      end
      route_setting :authentication, job_token_allowed: true
      put ':id/releases/:tag_name', requirements: RELEASE_ENDPOINT_REQUIREMENTS do
        authorize_update_release!

        result = ::Releases::UpdateService
          .new(user_project, current_user, declared_params(include_missing: false))
          .execute

        if result[:status] == :success
          log_release_updated_audit_event
          log_release_milestones_updated_audit_event if result[:milestones_updated]

          present result[:release], with: Entities::Release, current_user: current_user
        else
          render_api_error!(result[:message], result[:http_status])
        end
      end

      desc 'Delete a release' do
        detail "Delete a release. Deleting a release doesn't delete the associated tag. Maintainer level access to the project is required to delete a release. This feature was introduced in GitLab 11.7."
        named 'delete_release'
        success Entities::Release
        failure [
          { code: 400, message: 'Bad request' },
          { code: 401, message: 'Unauthorized' },
          { code: 403, message: 'Forbidden' },
          { code: 404, message: 'Not found' }
        ]
        tags releases_tags
      end
      params do
        requires :tag_name, type: String, desc: 'The Git tag the release is associated with', as: :tag
      end
      route_setting :authentication, job_token_allowed: true
      delete ':id/releases/:tag_name', requirements: RELEASE_ENDPOINT_REQUIREMENTS do
        authorize_destroy_release!

        result = ::Releases::DestroyService
          .new(user_project, current_user, declared_params(include_missing: false))
          .execute

        if result[:status] == :success
          log_release_deleted_audit_event

          present result[:release], with: Entities::Release, current_user: current_user
        else
          render_api_error!(result[:message], result[:http_status])
        end
      end
    end

    helpers do
      def authorize_read_group_releases!
        authorize! :read_release, user_group
      end

      def authorize_create_release!
        authorize! :create_release, user_project
      end

      def authorize_read_releases!
        authorize! :read_release, user_project
      end

      def authorize_read_release!
        authorize! :read_release, release
      end

      def authorize_update_release!
        authorize! :update_release, release
      end

      def authorize_destroy_release!
        authorize! :destroy_release, release
      end

      def authorize_download_code!
        authorize! :download_code, user_project
      end

      def authorize_create_evidence!
        # extended in EE
      end

      def release
        @release ||= user_project.releases.find_by_tag(params[:tag])
      end

      def find_latest_release
        ReleasesFinder.new(user_project, current_user, { order_by: 'released_at', sort: 'desc' }).execute.first
      end

      def get_query_params
        return {} unless @request.query_string.present?

        Rack::Utils.parse_nested_query(@request.query_string)
      end

      def log_release_created_audit_event(release)
        # extended in EE
      end

      def log_release_updated_audit_event
        # extended in EE
      end

      def log_release_deleted_audit_event
        # extended in EE
      end

      def log_release_milestones_updated_audit_event
        # extended in EE
      end

      def release_cli?
        request.env['HTTP_USER_AGENT']&.include?(RELEASE_CLI_USER_AGENT) == true
      end

      def event_context
        {
          release_cli: release_cli?
        }
      end

      def track_release_event
        Gitlab::Tracking.event(options[:for].name, options[:route_options][:named],
          project: user_project, user: current_user, **event_context)
      end

      def find_group_releases(finder_options)
        ::Releases::GroupReleasesFinder
          .new(user_group, current_user, finder_options)
          .execute(preload: true)
      end

      def present_group_releases(params, releases)
        options = {
          with: params[:simple] ? Entities::BasicReleaseDetails : Entities::Release,
          current_user: current_user
        }

        # GroupReleasesFinder has already ordered the data for us
        present paginate(releases, skip_default_order: true), options
      end
    end
  end
end

API::Releases.prepend_mod_with('API::Releases')