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package org.traccar.command;
import org.traccar.database.ActiveDevice;
import java.util.HashMap;
import java.util.Map;
public class StringCommandTemplate<T extends GpsCommand> implements CommandTemplate<T> {
private String messageTemplate;
private Map<Class<?>, CommandValueConversion> converters = new HashMap<Class<?>, CommandValueConversion>();
public StringCommandTemplate(String template, Object... replacements) {
this.messageTemplate = String.format(template, replacements);
}
@Override
public Object applyTo(ActiveDevice activeDevice, T command) {
String currentMessage = messageTemplate;
currentMessage = this.replace(currentMessage, GpsCommand.UNIQUE_ID, activeDevice.getUniqueId());
Map<String, Object> replacements = command.getReplacements();
for (Map.Entry<String, Object> entry : replacements.entrySet()) {
currentMessage = this.replace(currentMessage, entry.getKey(), entry.getValue());
}
return currentMessage;
}
public CommandTemplate addConverter(Class<?> type, CommandValueConversion converter) {
converters.put(type, converter);
return this;
}
protected CommandValueConversion getConverter(Class<?> type) {
return converters.containsKey(type) ? converters.get(type) : idConverter();
}
private CommandValueConversion idConverter() {
return new CommandValueConversion() {
@Override
public String convert(Object value) {
return value.toString();
}
};
}
private String replace(String currentMessage, String key, Object value) {
String replacementValue = getConverter(value.getClass()).convert(value);
return currentMessage.replace("[" + key + "]", replacementValue);
}
}
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