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package com.afp.ordermanagement.annotation;
import com.afp.ordermanagement.model.Manager;
import com.afp.ordermanagement.service.ManagerTokenVerifier;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.web.reactive.BindingContext;
import org.springframework.web.reactive.result.method.HandlerMethodArgumentResolver;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.List;
public class ManagerPayloadResolver implements HandlerMethodArgumentResolver {
@Autowired
ManagerTokenVerifier managerTokenVerifier;
@Override
public boolean supportsParameter(MethodParameter methodParameter) {
boolean hasClassAnnotation = methodParameter.getDeclaringClass().isAnnotationPresent(AuthManagerController.class);
boolean hasMethodAnnotation = methodParameter.hasMethodAnnotation(AuthManagerResponse.class);
boolean hasParameterAnnotation = methodParameter.hasParameterAnnotation(ManagerPayload.class);
return (hasClassAnnotation || hasMethodAnnotation) && hasParameterAnnotation;
}
@Override
public Mono<Object> resolveArgument(MethodParameter methodParameter, BindingContext bindingContext, ServerWebExchange serverWebExchange) {
String accessToken = managerTokenVerifier.getTokenHeader(serverWebExchange);
ManagerPayload annotation = methodParameter.getParameterAnnotation(ManagerPayload.class);
String value = annotation.value(), pluck = annotation.pluck(), selectedField;
List<Field> declaredFields = Arrays.asList(Manager.class.getDeclaredFields());
Manager manager = managerTokenVerifier.createManagerFromToken(accessToken);
if (value.isEmpty() && pluck.isEmpty()) {
return Mono.just(manager);
} else {
selectedField = value.isEmpty() ? pluck : value;
if (!declaredFields.contains(selectedField))
return Mono.just(manager);
try {
Field field = Manager.class.getDeclaredField(selectedField);
field.setAccessible(true);
return Mono.just(field.get(manager));
} catch (Exception ignore) {
return Mono.just(manager);
}
}
}
}