package io.micronaut.build.services;
   
   import io.micronaut.context.env.*;
   import io.micronaut.context.env.yaml.YamlPropertySourceLoader;
   import io.micronaut.core.io.file.DefaultFileSystemResourceLoader;
   import org.apache.maven.project.MavenProject;
   
   import javax.inject.Inject;
   import javax.inject.Singleton;
  import java.io.File;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Optional;
  
  /**
   * Parses the Micronaut application configuration.
   *
   * @author Álvaro Sánchez-Mariscal
   * @since 1.1
   */
  @Singleton
  public class ApplicationConfigurationService {
  
      private final MavenProject mavenProject;
  
      @SuppressWarnings("CdiInjectionPointsInspection")
      @Inject
      public ApplicationConfigurationService(MavenProject mavenProject) {
          this.mavenProject = mavenProject;
      }
  
      public Map<String, Object> getApplicationConfiguration() {
          Map<String, Object> configuration = new HashMap<>();
  
          PropertySourceLoader[] loaders = new PropertySourceLoader[]{
                  new YamlPropertySourceLoader(),
                  new PropertiesPropertySourceLoader()
          };
  
          for (PropertySourceLoader loader : loaders) {
              Optional<PropertySource> propertySource = loader.load("application", new DefaultFileSystemResourceLoader(new File(mavenProject.getBasedir(), "src/main/resources")));
              if (propertySource.isPresent()) {
                  MapPropertySource mapPropertySource = (MapPropertySource) propertySource.get();
                  configuration.putAll(mapPropertySource.asMap());
              }
          }
  
          MapPropertySource[] propertySources = new MapPropertySource[] {
                  new EnvironmentPropertySource(),
                  new SystemPropertiesPropertySource()
          };
          for (MapPropertySource propertySource : propertySources) {
              configuration.putAll(propertySource.asMap());
          }
  
          return configuration;
      }
  }