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package com.tosan.tools.tracker.starter.service;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.introspect.ClassIntrospector;

import java.util.Map;

/**
 * @author M.khoshnevisan
 * @since 8/27/2023
 */
public class ExceptionHandlerUtil {

    private final ObjectMapper objectMapper = new ObjectMapper();

    public  Map getExceptionParam(T object) {
        return jsonToMap(objectToJsonForRestException(object, IgnoredExceptionProperties.class));
    }

    private Map jsonToMap(String jsonString) {
        try {
            TypeReference> typeRef = new TypeReference<>() {
            };
            return objectMapper.readValue(jsonString, typeRef);
        } catch (Exception e) {
            throw new RuntimeException("error in converting Json to map JSONObject", e);
        }
    }

    private  String objectToJsonForRestException(T object, Class ignorePropertiesRestException) {
        ObjectMapper objectMapperForRestException = createObjectMapperWthMixedInResolver(object, ignorePropertiesRestException);
        try {
            return objectMapperForRestException.writer().writeValueAsString(object);
        } catch (Exception e) {
            throw new RuntimeException("error in converting object to Json", e);
        }
    }

    private  ObjectMapper createObjectMapperWthMixedInResolver(T object, Class ignoreProperties) {
        ObjectMapper objectMapperWithMixedIn = objectMapper.copy();
        objectMapperWithMixedIn.setMixInResolver(new ClassIntrospector.MixInResolver() {
            @Override
            public Class findMixInClassFor(Class cls) {
                return ignoreProperties;
            }

            @Override
            public ClassIntrospector.MixInResolver copy() {
                return this;
            }
        });
        objectMapperWithMixedIn.addMixIn(object.getClass(), ignoreProperties);
        return objectMapperWithMixedIn;
    }
}