/*-
 * ============LICENSE_START=======================================================
 * APPC
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * Copyright (C) 2017 Amdocs
 * ================================================================================
 * 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=========================================================
 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 */

package org.openecomp.appc.metricservice.metric.impl;

import org.openecomp.appc.metricservice.metric.MetricType;
import org.openecomp.appc.metricservice.metric.PrimitiveCounter;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.HashMap;
import java.util.concurrent.atomic.AtomicLong;


public class DefaultPrimitiveCounter implements PrimitiveCounter {
    private String name;
    private MetricType metricType;
    private AtomicLong counter = new AtomicLong();

    private final SimpleDateFormat dateTimeFormat = new SimpleDateFormat("YYYY-MM-dd:HH:mm:ss");
    private String lastResetTime = dateTimeFormat.format(Calendar.getInstance().getTime());

    public DefaultPrimitiveCounter(String name, MetricType metricType, long counter) {
        this.name = name;
        this.metricType = metricType;
        this.counter.set(counter);
    }

    public DefaultPrimitiveCounter(String name, MetricType metricType) {
        this.counter.set(0);
        this.name = name;
        this.metricType = metricType;
    }

    @Override
    public void increment() {
        increment(1);
    }

    @Override
    public void increment(long value) {
        this.counter.incrementAndGet();
    }

    @Override
    public void decrement() {
        decrement(1);
    }

    @Override
    public void decrement(long value) {
        this.counter.decrementAndGet();
    }

    @Override
    public long value() {
        return this.counter.get();
    }

    @Override
    public String name() {
        return this.name;
    }

    @Override
    public void reset() {
        this.counter.set(0);
        Calendar cal = Calendar.getInstance();
        lastResetTime = dateTimeFormat.format(cal.getTime());
    }

    @Override
    public String toString() {
        return "DefaultPrimitiveCounter{" + "name='" + name + '\'' + ", metricType=" + metricType + ", counter="
                + counter.get() + '}';
    }

    @Override
    public MetricType type() {
        return this.metricType;
    }

    @Override
    public HashMap<String, String> getMetricsOutput() {
        return new HashMap<>();
    }

    @Override
    public String getLastModified() {
        return lastResetTime;
    }
}