Changes for refresh amazon app client secret

lib/muffin_man.rb

@@ -38,6 +38,7 @@
 require "muffin_man/customer_feedback/v20240601"
 require "muffin_man/uploads/v20201101"
 require "muffin_man/aplus_content/v20201101"
+require "muffin_man/application_management/v20231130"
 
 module MuffinMan
   class Error < StandardError; end

lib/muffin_man/application_management/v20231130.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module MuffinMan
+  module ApplicationManagement
+    class V20231130
+      def self.rotate_application_client_secret(access_token)
+        Typhoeus.post(
+          "https://sellingpartnerapi-na.amazon.com/applications/2023-11-30/clientSecret",
+          headers: { "x-amz-access-token" => access_token }
+        )
+      end
+    end
+  end
+end

lib/muffin_man/lwa/auth_helper.rb

@@ -23,5 +23,28 @@ def self.get_refresh_token(client_id, client_secret, auth_code)
       end
       JSON.parse(response.body)["refresh_token"]
     end
+
+    def self.get_access_token(scope, client_id, client_secret)
+      body = {
+        grant_type: "client_credentials",
+        scope: scope,
+        client_id: client_id,
+        client_secret: client_secret
+      }
+
+      response = Typhoeus.post(
+        ACCESS_TOKEN_URL,
+        body: URI.encode_www_form(body),
+        headers: {
+          "Content-Type" => "application/x-www-form-urlencoded;charset=UTF-8"
+        }
+      )
+      if response.code != 200
+        error_body = JSON.parse(response.body)
+        error = "#{error_body["error"]}: #{error_body["error_description"]}"
+        raise MuffinMan::Error, error
+      end
+      JSON.parse(response.body)["access_token"]
+    end
   end
 end

spec/muffin_man/application_management/v20231130_spec.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+RSpec.describe MuffinMan::ApplicationManagement::V20231130 do
+  let(:access_token) { "test_access_token" }
+  let(:new_app_credential_url) { "https://sellingpartnerapi-na.amazon.com/applications/2023-11-30/clientSecret" }
+
+  describe ".rotate_application_client_secret" do
+    let(:response) { instance_double(Typhoeus::Response) }
+
+    before do
+      allow(Typhoeus).to receive(:post).and_return(response)
+    end
+
+    context "when the request is successful (204)" do
+      before do
+        allow(response).to receive(:code).and_return(204)
+        allow(response).to receive(:body).and_return("")
+      end
+
+      it "returns the response and makes the correct API call" do
+        expect(Typhoeus).to receive(:post).with(
+          new_app_credential_url,
+          headers: { "x-amz-access-token" => access_token }
+        )
+
+        result = described_class.rotate_application_client_secret(access_token)
+        expect(result).to eq(response)
+      end
+    end
+  end
+end