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package software.coolstuff.installapex.config;

import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;

import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.ConsoleAppender;
import ch.qos.logback.core.Context;
import ch.qos.logback.core.FileAppender;
import ch.qos.logback.core.OutputStreamAppender;
import ch.qos.logback.ext.spring.ApplicationContextHolder;

public class LoggingConfiguration {

  private static final Logger log = LoggerFactory.getLogger(LoggingConfiguration.class);

  @Value("${loggingConfiguration.layoutPattern}")
  private String layoutPattern;

  @Bean(name = "logback.applicationContextHolder")
  public static ApplicationContextHolder applicationContextHolder() {
    return new ApplicationContextHolder();
  }

  @Bean(name = "logback.loggingEncoder", initMethod = "start", destroyMethod = "stop")
  public PatternLayoutEncoder loggingEncoder() {
    PatternLayoutEncoder encoder = new PatternLayoutEncoder();
    encoder.setContext((Context) LoggerFactory.getILoggerFactory());
    encoder.setPattern(layoutPattern);
    return encoder;
  }

  @Bean(name = "logback.springAppender", initMethod = "start", destroyMethod = "stop")
  @Order(Ordered.HIGHEST_PRECEDENCE)
  public OutputStreamAppender springAppender(PatternLayoutEncoder encoder) {
    OutputStreamAppender appender;

    String logFile = System.getProperty("installApex.logFile");
    if (StringUtils.isNotBlank(logFile)) {
      log.debug("Configuring the fileAppender");
      appender = new FileAppender<>();
      appender.setName("fileAppender");
      ((FileAppender) appender).setFile(logFile);
    } else {
      log.debug("Configuring the consoleAppender");
      appender = new ConsoleAppender<>();
      ((ConsoleAppender) appender).setWithJansi(true);
      appender.setName("consoleAppender");
    }

    appender.setContext((Context) LoggerFactory.getILoggerFactory());
    appender.setEncoder(encoder);

    return appender;
  }

}