Remove draper dependency

It's not really doing much, just add the bits that are used ourselves

Gemfile

@@ -3,7 +3,6 @@
 source "https://rubygems.org"
 
 gem "addressable"
-gem "draper"
 gem "good_job"
 gem "httparty"
 gem "kaminari"

Gemfile.lock

@@ -51,10 +51,6 @@ GEM
       globalid (>= 0.3.6)
     activemodel (7.0.8)
       activesupport (= 7.0.8)
-    activemodel-serializers-xml (1.0.2)
-      activemodel (> 5.x)
-      activesupport (> 5.x)
-      builder (~> 3.1)
     activerecord (7.0.8)
       activemodel (= 7.0.8)
       activesupport (= 7.0.8)
@@ -91,13 +87,6 @@ GEM
     crass (1.0.6)
     date (3.3.3)
     diff-lcs (1.5.0)
-    draper (4.0.2)
-      actionpack (>= 5.0)
-      activemodel (>= 5.0)
-      activemodel-serializers-xml (>= 1.0)
-      activesupport (>= 5.0)
-      request_store (>= 1.0)
-      ruby2_keywords
     e2mmap (0.1.0)
     erubi (1.12.0)
     et-orbi (1.2.7)
@@ -234,8 +223,6 @@ GEM
       ffi (~> 1.0)
     rbs (2.8.4)
     regexp_parser (2.8.1)
-    request_store (1.5.1)
-      rack (>= 1.4)
     responders (3.1.0)
       actionpack (>= 5.2)
       railties (>= 5.2)
@@ -326,7 +313,6 @@ PLATFORMS
 
 DEPENDENCIES
   addressable
-  draper
   factory_bot_rails
   good_job
   httparty

app/decorators/application_decorator.rb

@@ -1,14 +1,26 @@
 # frozen_string_literal: true
 
-class ApplicationDecorator < Draper::Decorator
-  def self.inherited(child_class)
+class ApplicationDecorator
+  include ActiveModel::Serialization
+  include ActiveModel::Serializers::JSON
+
+  # Delegate columns and instance methods
+  def self.inherited(decorator_class)
     super
-    child_class.class_eval do
-      def self.collection_decorator_class
-        PaginatedDecorator
-      end
+    model_class = decorator_class.name.delete_suffix("Decorator").constantize
+    decorator_class.class_eval do
+      delegate *model_class.column_names, *model_class.instance_methods(false), to: :@object # rubocop:disable Lint/AmbiguousOperator
     end
   end
 
-  delegate_all
+  delegate_missing_to :@object
+  delegate :to_param, :to_partial_path, to: :@object
+
+  attr_reader :helpers
+  alias h helpers
+
+  def initialize(object)
+    @object = object
+    @helpers = ApplicationController.helpers
+  end
 end

app/decorators/paginated_decorator.rb

@@ -1,5 +1,14 @@
 # frozen_string_literal: true
 
-class PaginatedDecorator < Draper::CollectionDecorator
-  delegate :current_page, :total_pages, :limit_value, :entry_name, :total_count, :offset_value, :last_page?
+class PaginatedDecorator
+  delegate :current_page, :total_pages, :limit_value, :entry_name, :total_count, :offset_value, :last_page?, to: :@object
+  delegate *Array.instance_methods(false), to: :collection # rubocop:disable Lint/AmbiguousOperator
+
+  def initialize(object)
+    @object = object
+  end
+
+  def collection
+    @collection ||= @object.map(&:decorate)
+  end
 end

app/models/application_record.rb

@@ -114,4 +114,20 @@ def join_hash(input)
       end
     end
   end
+
+  concerning :Decoration do
+    def decorate
+      self.class.decorator_class.new(self)
+    end
+
+    class_methods do
+      def decorator_class
+        "#{model_name}Decorator".constantize
+      end
+
+      def decorate
+        PaginatedDecorator.new(all)
+      end
+    end
+  end
 end