/*
 * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
 *
 * 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 org.traccar.protocol;

import java.util.Map;
import org.traccar.BaseProtocolEncoder;
import org.traccar.model.Command;

public class Gps103ProtocolEncoder extends BaseProtocolEncoder {

    private String formatCommand(Command command, String format, String... keys) {
        
        String result = String.format(format, (Object[]) keys);
        
        result = result.replaceAll("\\{" + Command.KEY_UNIQUE_ID + "}", getUniqueId(command.getDeviceId()));
        for (Map.Entry<String, Object> entry : command.getOther().entrySet()) {
            String value;
            if (entry.getKey().equals(Command.KEY_FREQUENCY)) {
                long frequency = (Long) entry.getValue();
                if (frequency / 60 / 60 > 0) {
                    value = String.format("%02dh", frequency / 60 / 60);
                } else if (frequency / 60 > 0) {
                    value = String.format("%02dm", frequency / 60);
                } else {
                    value = String.format("%02ds", frequency);
                }
            } else {
                value = entry.getValue().toString();
            }
            result = result.replaceAll("\\{" + entry.getKey() + "}", value);
        }
        
        return result;
    }
    
    @Override
    protected Object encodeCommand(Command command) {
        
        switch (command.getType()) {
            case Command.TYPE_POSITION_STOP:
                return formatCommand(command, "**,imei:{%s},A", Command.KEY_UNIQUE_ID);
            case Command.TYPE_POSITION_FIX:
                return formatCommand(command, "**,imei:{%s},C,{%s}", Command.KEY_UNIQUE_ID, Command.KEY_FREQUENCY);
            case Command.TYPE_ENGINE_STOP:
                return formatCommand(command, "**,imei:{%s},K", Command.KEY_UNIQUE_ID);
            case Command.TYPE_ENGINE_RESUME:
                return formatCommand(command, "**,imei:{%s},J", Command.KEY_UNIQUE_ID);
        }
        
        return null;
    }
    
}