Configuration using initializer

README.md

@@ -20,6 +20,26 @@ If Bundler is not used to manage dependencies, install the gem with:
 
     $ gem install use_paragon
 
+## Configuration
+
+To use the UseParagon gem, you need to configure it with your private key and project ID. Here's how to do it:
+
+#### For Rails
+Create a new initializer in your Rails project:
+
+    touch config/initializers/use_paragon.rb
+
+Provide your private key and project ID in the initializer:
+
+```ruby
+# config/initializers/use_paragon.rb
+
+UseParagon.configure do |config|
+  config.private_key = Rails.application.credentials.paragon.private_key
+  config.project_id = Rails.application.credentials.paragon.project_id
+end
+```
+
 ## Usage
 
 To use UseParagon, add your project's ID along with your private key to your Rails credentials.

lib/use_paragon.rb

@@ -1,13 +1,23 @@
 # frozen_string_literal: true
 
+require "use_paragon/configuration"
 require "use_paragon/base"
 require "use_paragon/integration"
 require "use_paragon/user"
 require "use_paragon/version"
 require "use_paragon/workflow"
 
 module UseParagon
-  class Error < StandardError; end
+  class << self
+    def configuration
+      @configuration ||= Configuration.new
+    end
+
+    def configure(&block)
+      yield(configuration)
+    end
+  end
 
+  class Error < StandardError; end
   class InvalidUserIdError < StandardError; end
 end

lib/use_paragon/base.rb

@@ -2,6 +2,7 @@
 
 require "jwt"
 require "faraday"
+require "use_paragon/configuration"
 
 module UseParagon
   # Basic logic for interacting with UseParagon platform
@@ -62,15 +63,11 @@ def path(endpoint)
     end
 
     def private_key
-      return nil unless defined?(Rails)
-
-      Rails.application.credentials.paragon.private_key
+      UseParagon.configuration.private_key
     end
 
     def project_id
-      return nil unless defined?(Rails)
-
-      Rails.application.credentials.paragon.project_id
+      UseParagon.configuration.project_id
     end
 
     def validate_user_id!

lib/use_paragon/configuration.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+module UseParagon
+  # Allows configuration using an initializer
+  class Configuration
+    attr_accessor :private_key, :project_id
+  end
+end