/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.syncope.core.starter;
  
  import com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider;
  import io.swagger.v3.oas.integration.api.OpenAPIConfiguration;
  import io.swagger.v3.oas.models.security.SecurityScheme;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import java.util.regex.Pattern;
  import org.apache.commons.lang3.StringUtils;
  import org.apache.cxf.Bus;
  import org.apache.cxf.endpoint.Server;
  import org.apache.cxf.jaxrs.ext.MessageContext;
  import org.apache.cxf.jaxrs.model.doc.JavaDocProvider;
  import org.apache.cxf.jaxrs.openapi.OpenApiCustomizer;
  import org.apache.cxf.jaxrs.openapi.OpenApiFeature;
  import org.apache.cxf.jaxrs.spring.JAXRSServerFactoryBeanDefinitionParser.SpringJAXRSServerFactoryBean;
  import org.apache.cxf.jaxrs.utils.JAXRSUtils;
  import org.apache.cxf.jaxrs.validation.JAXRSBeanValidationInInterceptor;
  import org.apache.cxf.transport.common.gzip.GZIPInInterceptor;
  import org.apache.cxf.transport.common.gzip.GZIPOutInterceptor;
  import org.apache.syncope.common.keymaster.client.api.ConfParamOps;
  import org.apache.syncope.common.keymaster.client.api.DomainOps;
  import org.apache.syncope.common.keymaster.client.api.DomainWatcher;
  import org.apache.syncope.common.keymaster.client.api.KeymasterProperties;
  import org.apache.syncope.common.keymaster.client.api.ServiceOps;
  import org.apache.syncope.common.keymaster.rest.api.service.ConfParamService;
  import org.apache.syncope.common.keymaster.rest.api.service.DomainService;
  import org.apache.syncope.common.keymaster.rest.api.service.NetworkServiceService;
  import org.apache.syncope.core.keymaster.internal.InternalConfParamHelper;
  import org.apache.syncope.core.keymaster.internal.SelfKeymasterInternalConfParamOps;
  import org.apache.syncope.core.keymaster.internal.SelfKeymasterInternalDomainOps;
  import org.apache.syncope.core.keymaster.internal.SelfKeymasterInternalServiceOps;
  import org.apache.syncope.core.keymaster.rest.cxf.service.ConfParamServiceImpl;
  import org.apache.syncope.core.keymaster.rest.cxf.service.DomainServiceImpl;
  import org.apache.syncope.core.keymaster.rest.cxf.service.NetworkServiceServiceImpl;
  import org.apache.syncope.core.keymaster.rest.security.SelfKeymasterUsernamePasswordAuthenticationProvider;
  import org.apache.syncope.core.logic.ConfParamLogic;
  import org.apache.syncope.core.logic.DomainLogic;
  import org.apache.syncope.core.logic.NetworkServiceLogic;
  import org.apache.syncope.core.persistence.api.dao.ConfParamDAO;
  import org.apache.syncope.core.persistence.api.dao.DomainDAO;
  import org.apache.syncope.core.persistence.api.dao.NetworkServiceDAO;
  import org.apache.syncope.core.persistence.api.entity.SelfKeymasterEntityFactory;
  import org.apache.syncope.core.persistence.jpa.dao.JPAConfParamDAO;
  import org.apache.syncope.core.persistence.jpa.dao.JPADomainDAO;
  import org.apache.syncope.core.persistence.jpa.dao.JPANetworkServiceDAO;
  import org.apache.syncope.core.persistence.jpa.entity.JPASelfKeymasterEntityFactory;
  import org.apache.syncope.core.provisioning.api.UserProvisioningManager;
  import org.apache.syncope.core.rest.cxf.JavaDocUtils;
  import org.apache.syncope.core.rest.cxf.RestServiceExceptionMapper;
  import org.apache.syncope.core.spring.security.AuthDataAccessor;
  import org.apache.syncope.core.spring.security.DefaultCredentialChecker;
  import org.apache.syncope.core.spring.security.SecurityProperties;
  import org.apache.syncope.core.spring.security.UsernamePasswordAuthenticationProvider;
  import org.apache.syncope.core.spring.security.WebSecurityContext;
  import org.apache.syncope.core.starter.SelfKeymasterContext.SelfKeymasterCondition;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.boot.autoconfigure.AutoConfigureBefore;
  import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
  import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
  import org.springframework.boot.context.properties.EnableConfigurationProperties;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.ConditionContext;
  import org.springframework.context.annotation.Conditional;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.core.env.Environment;
  import org.springframework.core.type.AnnotatedTypeMetadata;
  
  @EnableConfigurationProperties(KeymasterProperties.class)
  @Configuration(proxyBeanMethods = false)
  @AutoConfigureBefore(WebSecurityContext.class)
  @Conditional(SelfKeymasterCondition.class)
  public class SelfKeymasterContext {
  
      private static final Logger LOG = LoggerFactory.getLogger(SelfKeymasterContext.class);
  
      private static final Pattern HTTP = Pattern.compile("^http.+");
  
      static class SelfKeymasterCondition extends SpringBootCondition {
 
         @Override
         public ConditionOutcome getMatchOutcome(final ConditionContext context, final AnnotatedTypeMetadata metadata) {
             String keymasterAddress = context.getEnvironment().getProperty("keymaster.address");
             return new ConditionOutcome(
                     keymasterAddress != null && HTTP.matcher(keymasterAddress).matches(),
                     "Keymaster address not set for Self: " + keymasterAddress);
         }
     }
 
     @Bean
     public Server selfKeymasterContainer(
             final ConfParamService confParamService,
             final NetworkServiceService networkServiceService,
             final DomainService domainService,
             final JacksonJsonProvider jsonProvider,
             final GZIPInInterceptor gzipInInterceptor,
             final GZIPOutInterceptor gzipOutInterceptor,
             final JAXRSBeanValidationInInterceptor validationInInterceptor,
             final RestServiceExceptionMapper restServiceExceptionMapper,
             final Bus bus,
             final Environment env) {
 
         SpringJAXRSServerFactoryBean selfKeymasterContainer = new SpringJAXRSServerFactoryBean();
         selfKeymasterContainer.setBus(bus);
         selfKeymasterContainer.setAddress("/keymaster");
         selfKeymasterContainer.setStaticSubresourceResolution(true);
 
         selfKeymasterContainer.setProperties(Map.of("convert.wadl.resources.to.dom", "false"));
 
         selfKeymasterContainer.setServiceBeans(List.of(confParamService, networkServiceService, domainService));
 
         selfKeymasterContainer.setInInterceptors(List.of(gzipInInterceptor, validationInInterceptor));
 
         selfKeymasterContainer.setOutInterceptors(List.of(gzipOutInterceptor));
 
         selfKeymasterContainer.setProviders(List.of(restServiceExceptionMapper, jsonProvider));
 
         // OpenAPI
         JavaDocProvider javaDocProvider = JavaDocUtils.getJavaDocURLs().
                 map(JavaDocProvider::new).
                 orElseGet(() -> JavaDocUtils.getJavaDocPaths(env).
                 map(javaDocPaths -> {
                     try {
                         return new JavaDocProvider(javaDocPaths);
                     } catch (Exception e) {
                         LOG.error("Could not set javadoc paths from {}", List.of(javaDocPaths), e);
                         return null;
                     }
                 }).
                 orElse(null));
         OpenApiCustomizer openApiCustomizer = new OpenApiCustomizer() {
 
             @Override
             public OpenAPIConfiguration customize(final OpenAPIConfiguration configuration) {
                 super.customize(configuration);
 
                 MessageContext ctx = JAXRSUtils.createContextValue(
                         JAXRSUtils.getCurrentMessage(), null, MessageContext.class);
 
                 String url = StringUtils.substringBeforeLast(ctx.getUriInfo().getRequestUri().getRawPath(), "/");
                 configuration.getOpenAPI().setServers(List.of(new io.swagger.v3.oas.models.servers.Server().url(url)));
 
                 return configuration;
             }
         };
         openApiCustomizer.setDynamicBasePath(false);
         openApiCustomizer.setReplaceTags(false);
         openApiCustomizer.setJavadocProvider(javaDocProvider);
 
         String version = env.getProperty("version");
         OpenApiFeature openapiFeature = new OpenApiFeature();
         openapiFeature.setUseContextBasedConfig(true);
         openapiFeature.setTitle("Apache Syncope Self Keymaster");
         openapiFeature.setVersion(version);
         openapiFeature.setDescription("Apache Syncope Self Keymaster" + version);
         openapiFeature.setContactName("The Apache Syncope community");
         openapiFeature.setContactEmail("dev@syncope.apache.org");
         openapiFeature.setContactUrl("https://syncope.apache.org");
         openapiFeature.setScan(false);
         openapiFeature.setResourcePackages(Set.of("org.apache.syncope.common.keymaster.rest.api.service"));
         openapiFeature.setSecurityDefinitions(
                 Map.of("BasicAuthentication", new SecurityScheme().type(SecurityScheme.Type.HTTP).scheme("basic")));
         openapiFeature.setCustomizer(openApiCustomizer);
         selfKeymasterContainer.setFeatures(List.of(openapiFeature));
 
         return selfKeymasterContainer.create();
     }
 
     @Bean
     public UsernamePasswordAuthenticationProvider usernamePasswordAuthenticationProvider(
             final DomainOps domainOps,
             final AuthDataAccessor dataAccessor,
             final UserProvisioningManager provisioningManager,
             final DefaultCredentialChecker credentialChecker,
             final SecurityProperties securityProperties,
             final KeymasterProperties keymasterProperties) {
 
         return new SelfKeymasterUsernamePasswordAuthenticationProvider(
                 domainOps,
                 dataAccessor,
                 provisioningManager,
                 credentialChecker,
                 securityProperties,
                 keymasterProperties);
     }
 
     @Bean
     public InternalConfParamHelper internalConfParamHelper(
             final ConfParamDAO confParamDAO,
             final SelfKeymasterEntityFactory entityFactory) {
 
         return new InternalConfParamHelper(confParamDAO, entityFactory);
     }
 
     @Bean
     public ConfParamOps internalConfParamOps(final InternalConfParamHelper helper) {
         return new SelfKeymasterInternalConfParamOps(helper);
     }
 
     @Bean
     public ServiceOps internalServiceOps(
             final NetworkServiceLogic networkServiceLogic,
             final KeymasterProperties props) {
 
         return new SelfKeymasterInternalServiceOps(networkServiceLogic, props);
     }
 
     @Bean
     public DomainOps domainOps(final DomainLogic domainLogic, final KeymasterProperties props) {
         return new SelfKeymasterInternalDomainOps(domainLogic, props);
     }
 
     @Bean
     public ConfParamLogic confParamLogic(final InternalConfParamHelper helper) {
         return new ConfParamLogic(helper);
     }
 
     @Bean
     public DomainLogic domainLogic(
             final DomainDAO domainDAO,
             final SelfKeymasterEntityFactory selfKeymasterEntityFactory,
             final DomainWatcher domainWatcher) {
 
         return new DomainLogic(domainDAO, selfKeymasterEntityFactory, domainWatcher);
     }
 
     @Bean
     public NetworkServiceLogic networkServiceLogic(
             final NetworkServiceDAO serviceDAO,
             final SelfKeymasterEntityFactory selfKeymasterEntityFactory) {
 
         return new NetworkServiceLogic(serviceDAO, selfKeymasterEntityFactory);
     }
 
     @Bean
     public SelfKeymasterEntityFactory selfKeymasterEntityFactory() {
         return new JPASelfKeymasterEntityFactory();
     }
 
     @Bean
     public ConfParamDAO confParamDAO() {
         return new JPAConfParamDAO();
     }
 
     @Bean
     public DomainDAO domainDAO() {
         return new JPADomainDAO();
     }
 
     @Bean
     public NetworkServiceDAO networkServiceDAO() {
         return new JPANetworkServiceDAO();
     }
 
     @Bean
     public ConfParamService confParamService(final ConfParamLogic confParamLogic) {
         return new ConfParamServiceImpl(confParamLogic);
     }
 
     @Bean
     public DomainService domainService(final DomainLogic domainLogic) {
         return new DomainServiceImpl(domainLogic);
     }
 
     @Bean
     public NetworkServiceService networkServiceService(final NetworkServiceLogic networkServiceLogic) {
         return new NetworkServiceServiceImpl(networkServiceLogic);
     }
 }