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/*
* Copyright 2021 Anton Tananaev (anton@traccar.org)
*
* 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.notification;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.velocity.tools.generic.DateTool;
import org.apache.velocity.tools.generic.NumberTool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.Context;
import org.traccar.model.User;
import org.traccar.reports.ReportUtils;
import java.io.StringWriter;
import java.nio.charset.StandardCharsets;
import java.nio.file.Paths;
import java.util.Locale;
public final class TextTemplateFormatter {
private static final Logger LOGGER = LoggerFactory.getLogger(TextTemplateFormatter.class);
private TextTemplateFormatter() {
}
public static VelocityContext prepareContext(User user) {
VelocityContext velocityContext = new VelocityContext();
if (user != null) {
velocityContext.put("user", user);
velocityContext.put("timezone", ReportUtils.getTimezone(user.getId()));
}
velocityContext.put("webUrl", Context.getVelocityEngine().getProperty("web.url"));
velocityContext.put("dateTool", new DateTool());
velocityContext.put("numberTool", new NumberTool());
velocityContext.put("locale", Locale.getDefault());
return velocityContext;
}
public static Template getTemplate(String name, String path) {
String templateFilePath;
Template template;
try {
templateFilePath = Paths.get(path, name + ".vm").toString();
template = Context.getVelocityEngine().getTemplate(templateFilePath, StandardCharsets.UTF_8.name());
} catch (ResourceNotFoundException error) {
LOGGER.warn("Notification template error", error);
templateFilePath = Paths.get(path, "unknown.vm").toString();
template = Context.getVelocityEngine().getTemplate(templateFilePath, StandardCharsets.UTF_8.name());
}
return template;
}
public static FullMessage formatFullMessage(VelocityContext velocityContext, String name) {
String formattedMessage = formatMessage(velocityContext, name, "full");
return new FullMessage((String) velocityContext.get("subject"), formattedMessage);
}
public static String formatShortMessage(VelocityContext velocityContext, String name) {
return formatMessage(velocityContext, name, "short");
}
private static String formatMessage(
VelocityContext velocityContext, String name, String templatePath) {
StringWriter writer = new StringWriter();
getTemplate(name, templatePath).merge(velocityContext, writer);
return writer.toString();
}
}
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