[AFP-91] 🎨 Create custom annotations & resolvers for 'ManagerController' (@asegers)

src/main/java/com/afp/ordermanagement/config/AnnotationConfig.java

+package com.afp.ordermanagement.config;
+
+import com.afp.ordermanagement.annotation.AccessTokenResolver;
+import com.afp.ordermanagement.annotation.ManagerPayloadResolver;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.reactive.config.EnableWebFlux;
+import org.springframework.web.reactive.config.WebFluxConfigurer;
+import org.springframework.web.reactive.result.method.annotation.ArgumentResolverConfigurer;
+
+@Configuration
+//@ConditionalOnClass(EnableWebFlux.class) // checks that WebFlux is on the classpath
+//@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
+//@EnableWebFlux
+public class AnnotationConfig implements WebFluxConfigurer {
+    @Override
+    public void configureArgumentResolvers(ArgumentResolverConfigurer configurer) {
+        configurer.addCustomResolver(accessTokenResolver());
+        configurer.addCustomResolver(managerPayloadResolver());
+    }
+
+    @Bean
+    public AccessTokenResolver accessTokenResolver() {
+        return new AccessTokenResolver();
+    }
+
+    @Bean
+    public ManagerPayloadResolver managerPayloadResolver() {
+        return new ManagerPayloadResolver();
+    }
+}