Singleton auth token provider

Author: eddyjaga

.rspec_status

@@ -1,58 +1,58 @@
 example_id                                              | status | run_time        |
 ------------------------------------------------------- | ------ | --------------- |
-./spec/zai_payment/auth/token_provider_spec.rb[1:1:1]   | passed | 0.00054 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:1:1] | passed | 0.00502 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:1:2] | passed | 0.0006 seconds  |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:2:1] | passed | 0.0002 seconds  |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:2:2] | passed | 0.00019 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:1:1]   | passed | 0.00042 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:1:1] | passed | 0.00478 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:1:2] | passed | 0.00046 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:2:1] | passed | 0.00033 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:2:2] | passed | 0.0002 seconds  |
 ./spec/zai_payment/auth/token_provider_spec.rb[1:2:2:3] | passed | 0.00017 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:3:1] | passed | 0.00025 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:3:2] | passed | 0.00092 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:3:3] | passed | 0.00064 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:4:1] | passed | 0.00081 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:2:4:2] | passed | 0.00064 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:1]   | passed | 0.00083 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:2]   | passed | 0.00024 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:3]   | passed | 0.00026 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:4:1] | passed | 0.00096 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:5:1] | passed | 0.00031 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:6:1] | passed | 0.00024 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:3:7:1] | passed | 0.00025 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:4:1]   | passed | 0.00019 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:4:2]   | passed | 0.0002 seconds  |
-./spec/zai_payment/auth/token_provider_spec.rb[1:4:3]   | passed | 0.00019 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:4:4]   | passed | 0.0002 seconds  |
-./spec/zai_payment/auth/token_provider_spec.rb[1:4:5]   | passed | 0.0002 seconds  |
-./spec/zai_payment/auth/token_provider_spec.rb[1:4:6]   | passed | 0.00018 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:5:1]   | passed | 0.00018 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:3:1] | passed | 0.00056 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:3:2] | passed | 0.00076 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:3:3] | passed | 0.00096 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:4:1] | passed | 0.00092 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:2:4:2] | passed | 0.00088 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:1]   | passed | 0.00075 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:2]   | passed | 0.00025 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:3]   | passed | 0.00034 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:4:1] | passed | 0.00092 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:5:1] | passed | 0.0003 seconds  |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:6:1] | passed | 0.00025 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:3:7:1] | passed | 0.00026 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:4:1]   | passed | 0.00022 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:4:2]   | passed | 0.00021 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:4:3]   | passed | 0.0002 seconds  |
+./spec/zai_payment/auth/token_provider_spec.rb[1:4:4]   | passed | 0.00022 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:4:5]   | passed | 0.00022 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:4:6]   | passed | 0.0002 seconds  |
+./spec/zai_payment/auth/token_provider_spec.rb[1:5:1]   | passed | 0.00023 seconds |
 ./spec/zai_payment/auth/token_provider_spec.rb[1:5:2]   | passed | 0.00012 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:5:3]   | passed | 0.00135 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:5:4]   | passed | 0.00012 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:6:1]   | passed | 0.00008 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:6:2]   | passed | 0.00009 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:6:3]   | passed | 0.00012 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:6:4:1] | passed | 0.00008 seconds |
-./spec/zai_payment/auth/token_provider_spec.rb[1:7:1]   | passed | 0.0003 seconds  |
-./spec/zai_payment/config_spec.rb[1:1:1]                | passed | 0.00003 seconds |
-./spec/zai_payment/config_spec.rb[1:1:2]                | passed | 0.00055 seconds |
-./spec/zai_payment/config_spec.rb[1:1:3]                | passed | 0.00002 seconds |
-./spec/zai_payment/config_spec.rb[1:1:4]                | passed | 0.00002 seconds |
-./spec/zai_payment/config_spec.rb[1:2:1:1]              | passed | 0.00004 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:5:3]   | passed | 0.00129 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:5:4]   | passed | 0.00015 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:6:1]   | passed | 0.00011 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:6:2]   | passed | 0.00008 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:6:3]   | passed | 0.00013 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:6:4:1] | passed | 0.00009 seconds |
+./spec/zai_payment/auth/token_provider_spec.rb[1:7:1]   | passed | 0.00033 seconds |
+./spec/zai_payment/config_spec.rb[1:1:1]                | passed | 0.00004 seconds |
+./spec/zai_payment/config_spec.rb[1:1:2]                | passed | 0.00043 seconds |
+./spec/zai_payment/config_spec.rb[1:1:3]                | passed | 0.00004 seconds |
+./spec/zai_payment/config_spec.rb[1:1:4]                | passed | 0.00003 seconds |
+./spec/zai_payment/config_spec.rb[1:2:1:1]              | passed | 0.00006 seconds |
 ./spec/zai_payment/config_spec.rb[1:2:2:1]              | passed | 0.00004 seconds |
 ./spec/zai_payment/config_spec.rb[1:2:3:1]              | passed | 0.00003 seconds |
-./spec/zai_payment/config_spec.rb[1:2:4:1]              | passed | 0.00004 seconds |
+./spec/zai_payment/config_spec.rb[1:2:4:1]              | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:2:5:1]              | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:2:6:1]              | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:2:7:1]              | passed | 0.00003 seconds |
-./spec/zai_payment/config_spec.rb[1:3:1:1]              | passed | 0.00002 seconds |
-./spec/zai_payment/config_spec.rb[1:3:2:1]              | passed | 0.00002 seconds |
+./spec/zai_payment/config_spec.rb[1:3:1:1]              | passed | 0.00003 seconds |
+./spec/zai_payment/config_spec.rb[1:3:2:1]              | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:3:3:1]              | passed | 0.00002 seconds |
-./spec/zai_payment/config_spec.rb[1:3:4:1]              | passed | 0.00002 seconds |
+./spec/zai_payment/config_spec.rb[1:3:4:1]              | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:3:5:1]              | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:4:1]                | passed | 0.00002 seconds |
 ./spec/zai_payment/config_spec.rb[1:4:2]                | passed | 0.00002 seconds |
 ./spec/zai_payment/config_spec.rb[1:4:3]                | passed | 0.00002 seconds |
 ./spec/zai_payment/config_spec.rb[1:4:4]                | passed | 0.00002 seconds |
-./spec/zai_payment/config_spec.rb[1:4:5]                | passed | 0.00002 seconds |
+./spec/zai_payment/config_spec.rb[1:4:5]                | passed | 0.00003 seconds |
 ./spec/zai_payment/config_spec.rb[1:4:6]                | passed | 0.00002 seconds |
 ./spec/zai_payment_spec.rb[1:1]                         | passed | 0.00002 seconds |

lib/zai_payment.rb

@@ -17,5 +17,17 @@ def config
     def configure
       yield config
     end
+
+    # Singleton auth token provider (uses default MemoryStore under the hood)
+    def auth
+      @auth ||= ZaiPayment::Auth::TokenProvider.new(config: config)
+    end
+
+    # --- Convenience one-liners ---
+    def token            = auth.bearer_token
+    def refresh_token!   = auth.refresh_token
+    def clear_token!     = auth.clear_token
+    def token_expiry     = auth.token_expiry
+    def token_type       = auth.token_type
   end
 end

lib/zai_payment/auth/token_provider.rb

@@ -1,8 +1,5 @@
 # frozen_string_literal: true
 
-require 'json'
-require 'base64'
-require 'uri'
 require 'faraday'
 
 module ZaiPayment