/*-
 * ========================LICENSE_START=================================
 * O-RAN-SC
 * %%
 * Copyright (C) 2019 AT&T Intellectual Property and Nokia
 * %%
 * 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.oransc.ric.portal.dashboard;

import java.io.IOException;
import java.io.InputStream;
import java.lang.invoke.MethodHandles;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
// Limit scan to dashboard classes; exclude generated API classes
@ComponentScan("org.oransc.ric.portal.dashboard")
public class DashboardApplication {

	private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

	// Unfortunately these names are not available as constants
	private static final String[] propertyFiles = { "ESAPI.properties", "key.properties", "portal.properties",
			"validation.properties" };

	public static void main(String[] args) throws IOException {
		SpringApplication.run(DashboardApplication.class, args);
		for (String pf : propertyFiles) {
			InputStream in = MethodHandles.lookup().lookupClass().getClassLoader().getResourceAsStream(pf);
			if (in == null)
				logger.warn("Failed to find property file on classpath: {}", pf);
			else
				in.close();
		}
		// Force this onto the console by using level WARN
		logger.warn("main: version '{}' successful start",
				getImplementationVersion(MethodHandles.lookup().lookupClass()));
	}

	/**
	 * Gets version details for the specified class.
	 * 
	 * @param clazz
	 *                  Class to get the version
	 * 
	 * @return the value of the MANIFEST.MF property Implementation-Version as
	 *         written by maven when packaged in a jar; 'unknown' otherwise.
	 */
	public static String getImplementationVersion(Class<?> clazz) {
		String classPath = clazz.getResource(clazz.getSimpleName() + ".class").toString();
		return classPath.startsWith("jar") ? clazz.getPackage().getImplementationVersion() : "unknown-not-jar";
	}

}