package at.asitplus.eidas.specific.connector;

import org.opensaml.core.config.InitializationException;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.web.context.WebApplicationContext;

import at.gv.egiz.eaaf.core.api.IStatusMessenger;
import at.gv.egiz.eaaf.core.impl.logging.LogMessageProviderFactory;
import at.gv.egiz.eaaf.core.impl.logging.SimpleStatusMessager;
import at.gv.egiz.eaaf.modules.pvp2.impl.opensaml.initialize.EaafOpenSaml3xInitializer;
import lombok.extern.slf4j.Slf4j;
import net.shibboleth.utilities.java.support.component.ComponentInitializationException;

@Slf4j
@SpringBootApplication(scanBasePackages = {
    "at.asitplus.eidas.specific.connector", 
    "at.gv.egiz.eaaf.utils.springboot.ajp"
    })
public class SpringBootApplicationInitializer extends SpringBootServletInitializer {

  private static ConfigurableApplicationContext ctx;

  /**
   * Starts MS-specific eIDAS-Implementation SpringBoot application.
   *
   * @param args Starting parameters
   * @throws Throwable In case of a start-up error
   */
  public static void main(final String[] args) throws Throwable {
    try {
      log.info("=============== Initializing Spring-Boot context! ===============");
      LogMessageProviderFactory.setStatusMessager(new SimpleStatusMessager());
      final SpringApplication springApp =
          new SpringApplication(SpringBootApplicationInitializer.class);
      springApp.addInitializers(new MsSpecificSpringBootApplicationContextInitializer());

      log.info("Bootstrap openSAML .... ");
      EaafOpenSaml3xInitializer.eaafInitialize();
      
      log.debug("Run SpringBoot initialization process ... ");
      ctx = springApp.run(args);

      // initialize status messenger
      LogMessageProviderFactory.setStatusMessager(ctx.getBean(IStatusMessenger.class));
      
      log.info("Initialization of MS-specific eIDAS-Connector finished.");

    } catch (final Throwable e) {
      log.error("MS-specific eIDAS-Connector initialization FAILED!", e);
      throw e;

    }

  }

  
  protected SpringApplicationBuilder createSpringApplicationBuilder() {    
    try {
      log.info("Bootstrap openSAML .... ");
      EaafOpenSaml3xInitializer.eaafInitialize();
           
    } catch (InitializationException | ComponentInitializationException e) {
      throw new RuntimeException(e);
      
    }
    
    SpringApplicationBuilder builder = new SpringApplicationBuilder();
    builder.initializers(new MsSpecificSpringBootApplicationContextInitializer());    
    return builder;
    
  }
  
  protected WebApplicationContext run(SpringApplication application) {
    WebApplicationContext internalContext = (WebApplicationContext) application.run();
   
    // initialize status messenger
    LogMessageProviderFactory.setStatusMessager(internalContext.getBean(IStatusMessenger.class));
   
    log.info("Initialization of MS-specific eIDAS-Connector finished.");
    
    return internalContext;
  }
  
  /**
   * Stops SpringBoot application of MS-specific eIDAS-Implementation.
   * 
   */
  public static void exit() {
    if (ctx != null) {
      log.info("Stopping SpringBoot application ... ");
      SpringApplication.exit(ctx, () -> 0);
      ctx = null;
      
    } else {
      log.info("No SpringBoot context. Nothing todo");
      
    }

  }

}