added authentication router

app/controllers/concerns/token_authenticatable.rb

@@ -6,7 +6,7 @@ module TokenAuthenticatable
 
     attr_reader :current_user
 
-    rescue_from UnauthorizedException, with: ->{ render(json: { errors "Unauthorized"}, status: 403)}
+    rescue_from UnauthorizedException, with: ->{ render(json: { error: "Unauthorized"}, status: 403)}
   end
 
   private

config/routes.rb

@@ -1,10 +1,7 @@
 Rails.application.routes.draw do
-  get 'users/index'
-  get 'users/new'
-  get 'users/create'
-  get 'users/show'
-  get 'users/edit'
-  get 'users/update'
-  get 'users/destroy'
-  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
+  resources :users do
+  end
+
+  post "register" => "users#register"
+  post "login" => "authentication#login"
 end

lib/jwt_services.rb

@@ -0,0 +1,15 @@
+class JwtService
+  class << self
+    def encode(payload, exp = 24.hours.from_now)
+      payload[:exp] = exp.to_i
+      JWT.encode(payload, Rails.application.secrets.secret_key_base)
+    end
+
+    def decode(token)
+      body = JWT.decode(token, Rails.application.secrets.secret_key_base)[0]
+      HashWithIndifferentAccess.new(body)
+    rescue JWT::DecodeError, JWT::ExpiredSignature
+      return nil
+    end
+  end
+end