refac: add authorization to the connection headers

Author: danilogco

README.md

@@ -30,7 +30,9 @@ Initialize the sdk with the basics:
 
 ```ruby
 Zaig.configure do |config|
-  config.access_token = "xxxxx-xxxxx-xxxxx-xxxx" # optional
+  config.jwt_secret = "xxxxx-xxxxx-xxxxx-xxxx" # optional
+  config.jwt_algorithm = "HS256" # optional
+  config.jwt_user = "qcedente" # optional if jwt_secret is not defined
   config.base_url = "https://example.com"
   config.registration_endpoint = "zaig/consulta_de_credito" # optional
 end

lib/zaig.rb

@@ -48,6 +48,19 @@ def self.configure
 
   # Basic configuration settings
   class Configuration
-    attr_accessor :access_token, :base_url, :registration_endpoint
+    attr_accessor :base_url, :jwt_secret, :jwt_user
+    attr_writer :jwt_algorithm, :jwt_exp_time, :registration_endpoint
+
+    def jwt_algorithm
+      @jwt_algorithm ||= "HS256"
+    end
+
+    def jwt_exp_time
+      @jwt_exp_time ||= 1_658_439_475
+    end
+
+    def registration_endpoint
+      @registration_endpoint ||= "zaig/consulta_de_credito"
+    end
   end
 end

lib/zaig/connection.rb

@@ -3,18 +3,30 @@
 module Zaig
   # Class to instance a authenticated connection object.
   class Connection < Flash::Integration::Connection
-    def initialize(request_class: Faraday, base_url: Zaig.configuration.base_url, access_token: Zaig.configuration.access_token)
-      @access_token = access_token
+    def initialize(request_class: Faraday, base_url: Zaig.configuration.base_url)
+      @jwt_algorithm = Zaig.configuration.jwt_algorithm
+      @jwt_exp_time = Zaig.configuration.jwt_exp_time
+      @jwt_secret = Zaig.configuration.jwt_secret
+      @jwt_user = Zaig.configuration.jwt_user
 
       super(request_class: request_class, base_url: base_url)
     end
 
     def default_headers
-      {
+      headers = {
         "Content-Type": "application/json",
-        Accept: "application/json",
-        "x-api-key": @access_token
+        Accept: "application/json"
       }
+
+      return headers if @jwt_secret.nil? || @jwt_secret.empty?
+
+      headers[:Authorization] = "Bearer #{access_token}"
+      headers
     end
+
+    private
+      def access_token
+        JWT.encode({ exp: @jwt_exp_time, user: @jwt_user }, @jwt_secret, @jwt_algorithm)
+      end
   end
 end

lib/zaig/registration.rb

@@ -17,9 +17,7 @@ def initialize(connection: Zaig::Connection.new, registration_payload: Zaig::Reg
     def call(obj)
       payload = @registration_payload.call(obj)
 
-      req_endpoint = Zaig.configuration.registration_endpoint
-
-      res = @connection.post(url: (req_endpoint.nil? ? ENDPOINT : req_endpoint), body: payload.to_json)
+      res = @connection.post(url: Zaig.configuration.registration_endpoint, body: payload.to_json)
 
       verify_response(res)
 

zaig.gemspec

@@ -17,6 +17,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency             "cpf_cnpj"
   s.add_dependency             "flash_integration"
+  s.add_dependency             "jwt"
   s.add_dependency             "singleton"
 
   s.add_development_dependency "bundler", "~> 2.3", ">= 2.3.0"