Module: Brick::RouteSet

Defined in:

lib/brick.rb

Instance Method Summary

• #finalize! ⇒ Object

Instance Method Details

#finalize! ⇒ Object

# File 'lib/brick.rb', line 661

def finalize!
  routeset_to_use = ::Rails.application.routes
  return super unless self == routeset_to_use

  path_prefix = ::Brick.config.path_prefix
  existing_controllers = routes.each_with_object({}) do |r, s|
    c = r.defaults[:controller]
    s[c] = nil if c
  end
  append do
    tables = []
    views = []
    table_class_length = 38 # Length of "Classes that can be built from tables:"
    view_class_length = 37 # Length of "Classes that can be built from views:"

    brick_namespace_create = lambda do |path_names, res_name, options|
      if path_names&.present?
        if (path_name = path_names.pop).is_a?(Array)
          module_name = path_name[1]
          path_name = path_name.first
        end
        send(:scope, { module: module_name || path_name, path: path_name, as: path_name }) do
          brick_namespace_create.call(path_names, res_name, options)
        end
      else
        send(:resources, res_name.to_sym, **options)
      end
    end

    # %%% TODO: If no auto-controllers then enumerate the controllers folder in order to build matching routes
    # If auto-controllers and auto-models are both enabled then this makes sense:
    controller_prefix = (path_prefix ? "#{path_prefix}/" : '')
    sti_subclasses = ::Brick.config.sti_namespace_prefixes.each_with_object(Hash.new { |h, k| h[k] = [] }) do |v, s|
                        # Turn something like {"::Spouse"=>"Person", "::Friend"=>"Person"} into {"Person"=>["Spouse", "Friend"]}
                        s[v.last] << v.first[2..-1] unless v.first.end_with?('::')
                      end
    versioned_views = {} # Track which views have already been done for each api_root
    ::Brick.relations.each do |k, v|
      if (schema_name = v.fetch(:schema, nil))
        schema_prefix = "#{schema_name}."
      end

      next if !(resource_name = v.fetch(:resource, nil)) ||
              existing_controllers.key?(
                controller_prefix + (resource_name = "#{schema_prefix&.tr('.', '/')}#{resource_name}".pluralize)
              )

      object_name = k.split('.').last # Take off any first schema part

      full_schema_prefix = if (aps = v.fetch(:auto_prefixed_schema, nil))
                              aps = aps[0..-2] if aps[-1] == '_'
                              (schema_prefix&.dup || +'') << "#{aps}."
                            else
                              schema_prefix
                            end

      # Track routes being built
      if (class_name = v.fetch(:class_name, nil))
        if v.key?(:isView)
          view_class_length = class_name.length if class_name.length > view_class_length
          views
        else
          table_class_length = class_name.length if class_name.length > table_class_length
          tables
        end << [class_name, aps, resource_name]
      end

      options = {}
      options[:only] = [:index, :show] if v.key?(:isView)

      # First do the normal routes
      prefixes = []
      prefixes << [aps, v[:class_name]&.split('::')[-2]&.underscore] if aps
      prefixes << schema_name if schema_name
      prefixes << path_prefix if path_prefix
      brick_namespace_create.call(prefixes, v[:resource], options)
      sti_subclasses.fetch(class_name, nil)&.each do |sc| # Add any STI subclass routes for this relation
        brick_namespace_create.call(prefixes, sc.underscore.tr('/', '_').pluralize, options)
      end

      # Now the API routes if necessary
      full_resource = nil
      ::Brick.api_roots&.each do |api_root|
        api_done_views = (versioned_views[api_root] ||= {})
        found = nil
        test_ver_num = nil
        view_relation = nil
        # If it's a view then see if there's a versioned one available by searching for resource names
        # versioned with the closest number (equal to or less than) compared with our API version number.
        if v.key?(:isView)
          if (ver = object_name.match(/^v([\d_]*)/)&.captures&.first) && ver[-1] == '_'
            core_object_name = object_name[ver.length + 1..-1]
            next if api_done_views.key?(unversioned = "#{schema_prefix}v_#{core_object_name}")

            # Expect that the last item in the path generally holds versioning information
            api_ver = api_root.split('/')[-1]&.gsub('_', '.')
            vn_idx = api_ver.rindex(/[^\d._]/) # Position of the first numeric digit at the end of the version number
            # Was:  .to_d
            test_ver_num = api_ver_num = api_ver[vn_idx + 1..-1].gsub('_', '.').to_i # Attempt to turn something like "v3" into the decimal value 3
            # puts [api_ver, vn_idx, api_ver_num, unversioned].inspect

            next if ver.to_i > api_ver_num # Don't surface any newer views in an older API

            test_ver_num -= 1 until test_ver_num.zero? ||
                                    (view_relation = ::Brick.relations.fetch(
                                      found = "#{schema_prefix}v#{test_ver_num}_#{core_object_name}", nil
                                    ))
            api_done_views[unversioned] = nil # Mark that for this API version this view is done

            # puts "Found #{found}" if view_relation
            # If we haven't found "v3_view_name" or "v2_view_name" or so forth, at the last
            # fall back to simply looking for "v_view_name", and then finally  "view_name".
            no_v_prefix_name = "#{schema_prefix}#{core_object_name}"
            standard_prefix = 'v_'
          else
            core_object_name = object_name
          end
          if (rvp = ::Brick.config.api_remove_view_prefix) && core_object_name.start_with?(rvp)
            core_object_name.slice!(0, rvp.length)
          end
          no_prefix_name = "#{schema_prefix}#{core_object_name}"
          unversioned = "#{schema_prefix}#{standard_prefix}#{::Brick.config.api_add_view_prefix}#{core_object_name}"
        else
          unversioned = k
        end

        view_relation ||= ::Brick.relations.fetch(found = unversioned, nil) ||
                          (no_v_prefix_name && ::Brick.relations.fetch(found = no_v_prefix_name, nil)) ||
                          (no_prefix_name && ::Brick.relations.fetch(found = no_prefix_name, nil))
        if view_relation
          actions = view_relation.key?(:isView) ? [:index, :show] : ::Brick::ALL_API_ACTIONS # By default all actions are allowed
          # Call proc that limits which endpoints get surfaced based on version, table or view name, method (get list / get one / post / patch / delete)
          # Returning nil makes it do nothing, false makes it skip creating this endpoint, and an array of up to
          # these 3 things controls and changes the nature of the endpoint that gets built:
          # (updated api_name, name of different relation to route to, allowed actions such as :index, :show, :create, etc)
          proc_result = if (filter = ::Brick.config.api_filter).is_a?(Proc)
                          begin
                            num_args = filter.arity.negative? ? 6 : filter.arity
                            filter.call(*[unversioned, k, view_relation, actions, api_ver_num, found, test_ver_num][0...num_args])
                          rescue StandardError => e
                            puts "::Brick.api_filter Proc error: #{e.message}"
                          end
                        end
          # proc_result expects to receive back: [updated_api_name, to_other_relation, allowed_actions]

          case proc_result
          when NilClass
            # Do nothing differently than what normal behaviour would be
          when FalseClass # Skip implementing this endpoint
            view_relation[:api][api_ver_num] = nil
            next
          when Array # Did they give back an array of actions?
            unless proc_result.any? { |pr| ::Brick::ALL_API_ACTIONS.exclude?(pr) }
              proc_result = [unversioned, to_relation, proc_result]
            end
            # Otherwise don't change this array because it's probably legit
          when String
            proc_result = [proc_result] # Treat this as the surfaced api_name (path) they want to use for this endpoint
          else
            puts "::Brick.api_filter Proc warning: Unable to parse this result returned: \n  #{proc_result.inspect}"
            proc_result = nil # Couldn't understand what in the world was returned
          end

          if proc_result&.present?
            if proc_result[1] # to_other_relation
              if (new_view_relation = ::Brick.relations.fetch(proc_result[1], nil))
                k = proc_result[1] # Route this call over to this different relation
                view_relation = new_view_relation
              else
                puts "::Brick.api_filter Proc warning: Unable to find new suggested relation with name #{proc_result[1]} -- sticking with #{k} instead."
              end
            end
            if proc_result.first&.!=(k) # updated_api_name -- a different name than this relation would normally have
              found = proc_result.first
            end
            actions &= proc_result[2] if proc_result[2] # allowed_actions
          end
          (view_relation[:api][api_ver_num] ||= {})[unversioned] = actions # Add to the list of API paths this resource responds to

          # view_ver_num = if (first_part = k.split('_').first) =~ /^v[\d_]+/
          #                  first_part[1..-1].gsub('_', '.').to_i
          #                end
          controller_name = if (last = view_relation.fetch(:resource, nil)&.pluralize)
                              "#{full_schema_prefix}#{last}"
                            else
                              found
                            end.tr('.', '/')

          { :index => 'get', :create => 'post' }.each do |action, method|
            if actions.include?(action)
              # Normally goes to something like:  /api/v1/employees
              send(method, "#{api_root}#{unversioned.tr('.', '/')}", { to: "#{controller_prefix}#{controller_name}##{action}" })
            end
          end
          # %%% We do not yet surface the #show action
          if (id_col = view_relation[:pk]&.first) # ID-dependent stuff
            { :update => ['put', 'patch'], :destroy => ['delete'] }.each do |action, methods|
              if actions.include?(action)
                methods.each do |method|
                  send(method, "#{api_root}#{unversioned.tr('.', '/')}/:#{id_col}", { to: "#{controller_prefix}#{controller_name}##{action}" })
                end
              end
            end
          end
        end
      end

      # Trestle compatibility
      if Object.const_defined?('Trestle') && ::Trestle.config.options&.key?(:site_title) &&
         !Object.const_defined?("#{resource_name.camelize}Admin")
        ::Trestle.resource(res_sym = k.to_sym) do
          menu { item res_sym, icon: "fa fa-star" }
        end
      end
    end

    if ::Brick.config.add_status && instance_variable_get(:@set).named_routes.names.exclude?(:brick_status)
      get("/#{controller_prefix}brick_status", to: 'brick_gem#status', as: 'brick_status')
    end

    if ::Brick.config.add_orphans && instance_variable_get(:@set).named_routes.names.exclude?(:brick_orphans)
      get("/#{controller_prefix}brick_orphans", to: 'brick_gem#orphans', as: 'brick_orphans')
    end

    if instance_variable_get(:@set).named_routes.names.exclude?(:brick_crosstab)
      get("/#{controller_prefix}brick_crosstab", to: 'brick_gem#crosstab', as: 'brick_crosstab')
      get("/#{controller_prefix}brick_crosstab/data", to: 'brick_gem#crosstab_data')
    end

    unless ::Brick.routes_done
      if Object.const_defined?('Rswag::Ui')
        rswag_path = routeset_to_use.routes.find { |r| r.app.app == Rswag::Ui::Engine }&.instance_variable_get(:@path_formatter)&.instance_variable_get(:@parts)&.join
        first_endpoint_parts = nil
        (doc_endpoints = Rswag::Ui.config.config_object[:urls])&.each do |doc_endpoint|
          puts "Mounting OpenApi 3.0 documentation endpoint for \"#{doc_endpoint[:name]}\" on #{doc_endpoint[:url]}"
          send(:get, doc_endpoint[:url], { to: 'brick_openapi#index' })
          endpoint_parts = doc_endpoint[:url]&.split('/')
          first_endpoint_parts ||= endpoint_parts
        end
        if doc_endpoints.present?
          if rswag_path && first_endpoint_parts
            puts "API documentation now available when navigating to:  /#{first_endpoint_parts&.find(&:present?)}/index.html"
          else
            puts "In order to make documentation available you can put this into your routes.rb:"
            puts "  mount Rswag::Ui::Engine => '/#{first_endpoint_parts&.find(&:present?) || 'api-docs'}'"
          end
        else
          sample_path = rswag_path || '/api-docs'
          puts
          puts "Brick:  rswag-ui gem detected -- to make OpenAPI 3.0 documentation available from a path such as  '#{sample_path}/v1/swagger.json',"
          puts '        put code such as this in an initializer:'
          puts '  Rswag::Ui.configure do |config|'
          puts "    config.swagger_endpoint '#{sample_path}/v1/swagger.json', 'API V1 Docs'"
          puts '  end'
          unless rswag_path
            puts
            puts '        and put this into your routes.rb:'
            puts "  mount Rswag::Ui::Engine => '/api-docs'"
          end
        end
      end

      ::Brick.routes_done = true
      puts "\n" if tables.present? || views.present?
      if tables.present?
        puts "Classes that can be built from tables:#{' ' * (table_class_length - 38)}  Path:"
        puts "======================================#{' ' * (table_class_length - 38)}  ====="
        ::Brick.display_classes(controller_prefix, tables, table_class_length)
      end
      if views.present?
        puts "Classes that can be built from views:#{' ' * (view_class_length - 37)}  Path:"
        puts "=====================================#{' ' * (view_class_length - 37)}  ====="
        ::Brick.display_classes(controller_prefix, views, view_class_length)
      end
    end
  end
  super
end