Add resource definitions for all 22 API tags, wire client accessors and require tree

lib/fiken/resources/purchases.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Fiken
+  module Resources
+    # /companies/{slug}/purchases
+    class Purchases < Resource::Base
+      include Resource::Listable
+      include Resource::Findable
+      include Resource::Creatable
+      include Resource::Attachable
+      include Resource::Payable
+      include Resource::Draftable
+
+      def resource_path
+        "purchases"
+      end
+
+      def draft_create_action
+        "createPurchase"
+      end
+
+      # PATCH /{id}/delete — delete a purchase (with a reason).
+      def delete(id, attributes = nil)
+        connection.patch("#{base_path}/#{id}/delete", attributes)
+        true
+      end
+    end
+  end
+end