package com.njcn.prepare.harmonic.api.line.fallback;

import com.njcn.common.pojo.enums.response.CommonResponseEnum;
import com.njcn.common.pojo.exception.BusinessException;
import com.njcn.common.pojo.response.HttpResult;
import com.njcn.device.biz.utils.DeviceEnumUtil;
import com.njcn.prepare.harmonic.api.line.PollutionFeignClient;
import com.njcn.prepare.harmonic.pojo.param.LineParam;
import feign.hystrix.FallbackFactory;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestBody;

/**
 * PollutionFeignClientFallbackFactory
 *
 */
@Slf4j
@Component
public class PollutionFeignClientFallbackFactory implements FallbackFactory<PollutionFeignClient> {

    @Override
    public PollutionFeignClient create(Throwable throwable) {
        Enum<?> exceptionEnum = CommonResponseEnum.SERVICE_FALLBACK;
        if (throwable.getCause() instanceof BusinessException) {
            BusinessException businessException = (BusinessException)throwable.getCause();
            exceptionEnum = DeviceEnumUtil.getExceptionEnum(businessException.getResult());
        }

        Enum<?> finalExceptionEnum = exceptionEnum;
        return new PollutionFeignClient() {
            @Override
            public HttpResult<String> processPollutionData(@RequestBody @Validated LineParam lineParam){
                log.error("{}异常，降级处理，异常为：{}", "污区数据:  ", throwable.toString());
                throw new BusinessException(finalExceptionEnum);
            }
        };
    }
}
