# frozen_string_literal: true

module API
  class API < Grape::API
    include APIGuard

    LOG_FILENAME = Rails.root.join("log", "api_json.log")

    NO_SLASH_URL_PART_REGEX = %r{[^/]+}.freeze
    NAMESPACE_OR_PROJECT_REQUIREMENTS = { id: NO_SLASH_URL_PART_REGEX }.freeze
    COMMIT_ENDPOINT_REQUIREMENTS = NAMESPACE_OR_PROJECT_REQUIREMENTS.merge(sha: NO_SLASH_URL_PART_REGEX).freeze
    USER_REQUIREMENTS = { user_id: NO_SLASH_URL_PART_REGEX }.freeze
    LOG_FILTERS = ::Rails.application.config.filter_parameters + [/^output$/]

    insert_before Grape::Middleware::Error,
                  GrapeLogging::Middleware::RequestLogger,
                  logger: Logger.new(LOG_FILENAME),
                  formatter: Gitlab::GrapeLogging::Formatters::LogrageWithTimestamp.new,
                  include: [
                    GrapeLogging::Loggers::FilterParameters.new(LOG_FILTERS),
                    Gitlab::GrapeLogging::Loggers::ClientEnvLogger.new,
                    Gitlab::GrapeLogging::Loggers::RouteLogger.new,
                    Gitlab::GrapeLogging::Loggers::UserLogger.new,
                    Gitlab::GrapeLogging::Loggers::ExceptionLogger.new,
                    Gitlab::GrapeLogging::Loggers::QueueDurationLogger.new,
                    Gitlab::GrapeLogging::Loggers::PerfLogger.new,
                    Gitlab::GrapeLogging::Loggers::CorrelationIdLogger.new
                  ]

    allow_access_with_scope :api
    prefix :api

    version 'v3', using: :path do
      route :any, '*path' do
        error!('API V3 is no longer supported. Use API V4 instead.', 410)
      end
    end

    version 'v4', using: :path

    before do
      header['X-Frame-Options'] = 'SAMEORIGIN'
      header['X-Content-Type-Options'] = 'nosniff'
    end

    before do
      Gitlab::ApplicationContext.push(
        user: -> { current_user },
        project: -> { @project },
        namespace: -> { @group },
        caller_id: route.origin
      )
    end

    # The locale is set to the current user's locale when `current_user` is loaded
    after { Gitlab::I18n.use_default_locale }

    rescue_from Gitlab::Access::AccessDeniedError do
      rack_response({ 'message' => '403 Forbidden' }.to_json, 403)
    end

    rescue_from ActiveRecord::RecordNotFound do
      rack_response({ 'message' => '404 Not found' }.to_json, 404)
    end

    rescue_from(
      ::ActiveRecord::StaleObjectError,
      ::Gitlab::ExclusiveLeaseHelpers::FailedToObtainLockError
    ) do
      rack_response({ 'message' => '409 Conflict: Resource lock' }.to_json, 409)
    end

    rescue_from UploadedFile::InvalidPathError do |e|
      rack_response({ 'message' => e.message }.to_json, 400)
    end

    rescue_from ObjectStorage::RemoteStoreError do |e|
      rack_response({ 'message' => e.message }.to_json, 500)
    end

    # Retain 405 error rather than a 500 error for Grape 0.15.0+.
    # https://github.com/ruby-grape/grape/blob/a3a28f5b5dfbb2797442e006dbffd750b27f2a76/UPGRADING.md#changes-to-method-not-allowed-routes
    rescue_from Grape::Exceptions::MethodNotAllowed do |e|
      error! e.message, e.status, e.headers
    end

    rescue_from Grape::Exceptions::Base do |e|
      error! e.message, e.status, e.headers
    end

    rescue_from Gitlab::Auth::TooManyIps do |e|
      rack_response({ 'message' => '403 Forbidden' }.to_json, 403)
    end

    rescue_from :all do |exception|
      handle_api_exception(exception)
    end

    format :json
    content_type :txt, "text/plain"

    # Ensure the namespace is right, otherwise we might load Grape::API::Helpers
    helpers ::API::Helpers
    helpers ::API::Helpers::CommonHelpers

    namespace do
      after do
        ::Users::ActivityService.new(@current_user).execute if Feature.enabled?(:api_activity_logging)
      end

      # Keep in alphabetical order
      mount ::API::AccessRequests
      mount ::API::Appearance
      mount ::API::Applications
      mount ::API::Avatar
      mount ::API::AwardEmoji
      mount ::API::Badges
      mount ::API::Boards
      mount ::API::Branches
      mount ::API::BroadcastMessages
      mount ::API::Commits
      mount ::API::CommitStatuses
      mount ::API::DeployKeys
      mount ::API::DeployTokens
      mount ::API::Deployments
      mount ::API::Environments
      mount ::API::ErrorTracking
      mount ::API::Events
      mount ::API::Features
      mount ::API::Files
      mount ::API::GroupBoards
      mount ::API::GroupClusters
      mount ::API::GroupExport
      mount ::API::GroupImport
      mount ::API::GroupLabels
      mount ::API::GroupMilestones
      mount ::API::Groups
      mount ::API::GroupContainerRepositories
      mount ::API::GroupVariables
      mount ::API::ImportGithub
      mount ::API::Issues
      mount ::API::JobArtifacts
      mount ::API::Jobs
      mount ::API::Keys
      mount ::API::Labels
      mount ::API::Lint
      mount ::API::LsifData
      mount ::API::Markdown
      mount ::API::Members
      mount ::API::MergeRequestDiffs
      mount ::API::MergeRequests
      mount ::API::Namespaces
      mount ::API::Notes
      mount ::API::Discussions
      mount ::API::ResourceLabelEvents
      mount ::API::NotificationSettings
      mount ::API::Pages
      mount ::API::PagesDomains
      mount ::API::Pipelines
      mount ::API::PipelineSchedules
      mount ::API::ProjectClusters
      mount ::API::ProjectContainerRepositories
      mount ::API::ProjectEvents
      mount ::API::ProjectExport
      mount ::API::ProjectImport
      mount ::API::ProjectHooks
      mount ::API::ProjectMilestones
      mount ::API::Projects
      mount ::API::ProjectSnapshots
      mount ::API::ProjectSnippets
      mount ::API::ProjectStatistics
      mount ::API::ProjectTemplates
      mount ::API::ProtectedBranches
      mount ::API::ProtectedTags
      mount ::API::Releases
      mount ::API::Release::Links
      mount ::API::RemoteMirrors
      mount ::API::Repositories
      mount ::API::Runner
      mount ::API::Runners
      mount ::API::Search
      mount ::API::Services
      mount ::API::Settings
      mount ::API::SidekiqMetrics
      mount ::API::Snippets
      mount ::API::Statistics
      mount ::API::Submodules
      mount ::API::Subscriptions
      mount ::API::Suggestions
      mount ::API::SystemHooks
      mount ::API::Tags
      mount ::API::Templates
      mount ::API::Todos
      mount ::API::Triggers
      mount ::API::UserCounts
      mount ::API::Users
      mount ::API::Variables
      mount ::API::Version
      mount ::API::Wikis
    end

    mount ::API::Internal::Base
    mount ::API::Internal::Pages

    route :any, '*path' do
      error!('404 Not Found', 404)
    end
  end
end

API::API.prepend_if_ee('::EE::API::API')