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/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.servicecomb.core.exception;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import io.servicecomb.foundation.common.RegisterManager;
import io.servicecomb.foundation.common.utils.FortifyUtils;

public class ExceptionUtils {
    private static final Logger LOGGER = LoggerFactory.getLogger(ExceptionUtils.class);

    // 异常码
    private static final String ERROR_DESC_MGR_MSG = "error desc mgr";

    protected static final RegisterManager ERROR_DESC_MGR = new RegisterManager<>(ERROR_DESC_MGR_MSG);

    private static final String CSE_SCHEMA_OPERATION_ID_INVALID = "cse.schema.operation.id.invalid";

    private static final String CSE_SCHEMA_OPERATION_NOT_EXIST = "cse.schema.operation.not.exist";

    private static final String CSE_HANDLER_REF_NOT_EXIST = "cse.handler.ref.not.exist";

    private static final String CSE_PRODUCER_OPERATION_NOT_EXIST = "cse.producer.operation.not.exist";

    private static final String CSE_LB_NO_AVAILABLE_ADDRESS = "cse.lb.no.available.address";

    static {
        ERROR_DESC_MGR.register(CSE_HANDLER_REF_NOT_EXIST, "Handler not exist, id=%s");
        ERROR_DESC_MGR.register(CSE_SCHEMA_OPERATION_ID_INVALID, "OperationId is invalid, schemaId=%s, path=%s");
        ERROR_DESC_MGR.register(CSE_SCHEMA_OPERATION_NOT_EXIST,
                "Operation not exist in interface, schemaId=%s, operation=%s");
        ERROR_DESC_MGR.register(CSE_PRODUCER_OPERATION_NOT_EXIST,
                "Producer operation not exist, schemaId=%s, operationName=%s");
        ERROR_DESC_MGR.register(CSE_LB_NO_AVAILABLE_ADDRESS,
                "No available address found. microserviceName=%s, version=%s, transportName=%s");
    }

    protected ExceptionUtils() {
    }

    // TODO：应该改为protected，不允许随便调，所有异常，都必须是强类型的
    public static CseException createCseException(String code, Object... args) {
        String msg = String.format(ERROR_DESC_MGR.ensureFindValue(code), args);

        CseException exception = new CseException(code, msg);
        LOGGER.error(FortifyUtils.getErrorInfo(exception));
        return exception;
    }

    public static CseException createCseException(String code, Throwable cause, Object... args) {
        String msg = String.format(ERROR_DESC_MGR.ensureFindValue(code), args);

        CseException exception = new CseException(code, msg, cause);
        LOGGER.error(FortifyUtils.getErrorInfo(exception));
        return exception;
    }

    public static CseException producerOperationNotExist(String schemaId, String operationName) {
        return createCseException(CSE_PRODUCER_OPERATION_NOT_EXIST,
                schemaId,
                operationName);
    }

    public static CseException operationIdInvalid(String schemaId, String path) {
        return createCseException(CSE_SCHEMA_OPERATION_ID_INVALID,
                schemaId,
                path);
    }

    public static CseException operationNotExist(String schemaId, String operationName) {
        return createCseException(CSE_SCHEMA_OPERATION_NOT_EXIST,
                schemaId,
                operationName);
    }

    public static CseException handlerRefNotExist(String id) {
        return createCseException(CSE_HANDLER_REF_NOT_EXIST, id);
    }

    public static CseException lbAddressNotFound(String microserviceName, String microserviceVersionRule,
            String transportName) {
        return createCseException(CSE_LB_NO_AVAILABLE_ADDRESS,
                microserviceName,
                microserviceVersionRule,
                transportName);
    }

}