/**
 * ============LICENSE_START====================================================
 * org.onap.aaf
 * ===========================================================================
 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
 * ===========================================================================
 * 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.
 * ============LICENSE_END====================================================
 *
 */

package org.onap.aaf.cadi.aaf.client;

import java.io.PrintStream;

import org.onap.aaf.cadi.client.Future;
import org.onap.aaf.cadi.util.Vars;
import org.onap.aaf.misc.env.APIException;
import org.onap.aaf.misc.env.Data.TYPE;
import org.onap.aaf.misc.rosetta.env.RosettaDF;
import org.onap.aaf.misc.rosetta.env.RosettaEnv;

import aaf.v2_0.Error;

public class ErrMessage {
    private RosettaDF<Error> errDF;
    
    public ErrMessage(RosettaEnv env) throws APIException {
        errDF = env.newDataFactory(Error.class);
    }

    /**
     * AT&T Requires a specific Error Format for RESTful Services, which AAF complies with.
     * 
     * This code will create a meaningful string from this format. 
     * 
     * @param ps
     * @param df
     * @param r
     * @throws APIException
     */
    public void printErr(PrintStream ps,  String attErrJson) throws APIException {
        StringBuilder sb = new StringBuilder();
        Error err = errDF.newData().in(TYPE.JSON).load(attErrJson).asObject();
        ps.println(toMsg(sb,err));
    }
    
    /**
     * AT&T Requires a specific Error Format for RESTful Services, which AAF complies with.
     * 
     * This code will create a meaningful string from this format. 
     * 
     * @param sb
     * @param df
     * @param r
     * @throws APIException
     */
    public StringBuilder toMsg(StringBuilder sb,  String attErrJson) throws APIException {
        return toMsg(sb,errDF.newData().in(TYPE.JSON).load(attErrJson).asObject());
    }
    
    public StringBuilder toMsg(Future<?> future) {
        return toMsg(new StringBuilder(),future);
    }
    
    public StringBuilder toMsg(StringBuilder sb, Future<?> future) {
        try {
            toMsg(sb,errDF.newData().in(TYPE.JSON).load(future.body()).asObject());
        } catch (Exception e) {
            //just print what we can
            sb.append(future.code());
            sb.append(": ");
            sb.append(future.body());
        }
        return sb;
    }

    public StringBuilder toMsg(StringBuilder sb, Error err) {
        sb.append(err.getMessageId());
        sb.append(' ');
        Object[] vars = new String[err.getVariables().size()];
        err.getVariables().toArray(vars);
        Vars.convert(sb, err.getText(),vars);
        return sb;
    }
    
    public Error getError(Future<?> future) throws APIException {
    	return errDF.newData().in(TYPE.JSON).load(future.body()).asObject();
    }
}