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/*
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 *  *  *  *  * Copyright 2019-2022 the original author or authors.
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package org.springdoc.webmvc.api;


import java.util.Comparator;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.TreeMap;

import com.fasterxml.jackson.core.JsonProcessingException;
import io.swagger.v3.core.util.PathUtils;
import io.swagger.v3.oas.models.OpenAPI;
import jakarta.servlet.http.HttpServletRequest;
import org.springdoc.api.AbstractOpenApiResource;
import org.springdoc.core.customizers.OpenApiCustomizer;
import org.springdoc.core.customizers.OperationCustomizer;
import org.springdoc.core.customizers.RouterOperationCustomizer;
import org.springdoc.core.filters.OpenApiMethodFilter;
import org.springdoc.core.fn.RouterOperation;
import org.springdoc.core.properties.SpringDocConfigProperties;
import org.springdoc.core.providers.ActuatorProvider;
import org.springdoc.core.providers.RepositoryRestResourceProvider;
import org.springdoc.core.providers.SecurityOAuth2Provider;
import org.springdoc.core.providers.SpringDocProviders;
import org.springdoc.core.providers.SpringWebProvider;
import org.springdoc.core.service.AbstractRequestService;
import org.springdoc.core.service.GenericResponseService;
import org.springdoc.core.service.OpenAPIService;
import org.springdoc.core.service.OperationService;

import org.springframework.aop.support.AopUtils;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.util.CollectionUtils;
import org.springframework.util.MimeType;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;

import static org.springdoc.core.providers.ActuatorProvider.getTag;
import static org.springdoc.core.utils.Constants.DEFAULT_GROUP_NAME;

/**
 * The type Web mvc open api resource.
 * @author bnasslahsen, Azige
 */
public abstract class OpenApiResource extends AbstractOpenApiResource {

	/**
	 * Instantiates a new Open api resource.
	 *
	 * @param groupName the group name
	 * @param openAPIBuilderObjectFactory the open api builder object factory
	 * @param requestBuilder the request builder
	 * @param responseBuilder the response builder
	 * @param operationParser the operation parser
	 * @param operationCustomizers the operation customizers
	 * @param openApiCustomizers the open api customisers
	 * @param routerOperationCustomizers the router operation customisers
	 * @param methodFilters the method filters
	 * @param springDocConfigProperties the spring doc config properties
	 * @param springDocProviders the spring doc providers
	 */
	public OpenApiResource(String groupName, ObjectFactory openAPIBuilderObjectFactory, AbstractRequestService requestBuilder,
			GenericResponseService responseBuilder, OperationService operationParser,
			Optional> operationCustomizers,
			Optional> openApiCustomizers,
			Optional> routerOperationCustomizers,
			Optional> methodFilters,
			SpringDocConfigProperties springDocConfigProperties,
			SpringDocProviders springDocProviders) {
		super(groupName, openAPIBuilderObjectFactory, requestBuilder, responseBuilder, operationParser, operationCustomizers, openApiCustomizers, routerOperationCustomizers, methodFilters, springDocConfigProperties, springDocProviders);
	}

	/**
	 * Instantiates a new Open api resource.
	 *
	 * @param openAPIBuilderObjectFactory the open api builder object factory
	 * @param requestBuilder the request builder
	 * @param responseBuilder the response builder
	 * @param operationParser the operation parser
	 * @param operationCustomizers the operation customizers
	 * @param openApiCustomizers the open api customisers
	 * @param routerOperationCustomizers the router operation customisers
	 * @param methodFilters the method filters
	 * @param springDocConfigProperties the spring doc config properties
	 * @param springDocProviders the spring doc providers
	 */
	public OpenApiResource(ObjectFactory openAPIBuilderObjectFactory, AbstractRequestService requestBuilder,
			GenericResponseService responseBuilder, OperationService operationParser,
			Optional> operationCustomizers,
			Optional> openApiCustomizers,
			Optional> routerOperationCustomizers,
			Optional> methodFilters,
			SpringDocConfigProperties springDocConfigProperties,
			SpringDocProviders springDocProviders) {
		super(DEFAULT_GROUP_NAME, openAPIBuilderObjectFactory, requestBuilder, responseBuilder, operationParser, operationCustomizers, openApiCustomizers, routerOperationCustomizers, methodFilters, springDocConfigProperties, springDocProviders);
	}

	/**
	 * Openapi json string.
	 *
	 * @param request the request
	 * @param apiDocsUrl the api docs url
	 * @param locale the locale
	 * @return the string
	 * @throws JsonProcessingException the json processing exception
	 */
	public String openapiJson(HttpServletRequest request,
			String apiDocsUrl, Locale locale)
			throws JsonProcessingException {
		calculateServerUrl(request, apiDocsUrl, locale);
		OpenAPI openAPI = this.getOpenApi(locale);
		return writeJsonValue(openAPI);
	}

	/**
	 * Openapi yaml string.
	 *
	 * @param request the request
	 * @param apiDocsUrl the api docs url
	 * @param locale the locale
	 * @return the string
	 * @throws JsonProcessingException the json processing exception
	 */
	public String openapiYaml(HttpServletRequest request,
			String apiDocsUrl, Locale locale)
			throws JsonProcessingException {
		calculateServerUrl(request, apiDocsUrl, locale);
		OpenAPI openAPI = this.getOpenApi(locale);
		return writeYamlValue(openAPI);
	}

	@Override
	@SuppressWarnings("unchecked")
	protected void getPaths(Map restControllers, Locale locale, OpenAPI openAPI) {
		Optional springWebProviderOptional = springDocProviders.getSpringWebProvider();
		springWebProviderOptional.ifPresent(springWebProvider -> {
			Map map = springWebProvider.getHandlerMethods();

			Optional repositoryRestResourceProviderOptional = springDocProviders.getRepositoryRestResourceProvider();
			repositoryRestResourceProviderOptional.ifPresent(restResourceProvider -> {
				List operationList = restResourceProvider.getRouterOperations(openAPI, locale);
				calculatePath(operationList, locale, openAPI);
				restResourceProvider.customize(openAPI);
				Map mapDataRest = restResourceProvider.getHandlerMethods();
				Map requestMappingMap = restResourceProvider.getBasePathAwareControllerEndpoints();
				Class[] additionalRestClasses = requestMappingMap.values().stream().map(AopUtils::getTargetClass).toArray(Class[]::new);
				AbstractOpenApiResource.addRestControllers(additionalRestClasses);
				map.putAll(mapDataRest);
			});

			Optional actuatorProviderOptional = springDocProviders.getActuatorProvider();
			if (actuatorProviderOptional.isPresent() && springDocConfigProperties.isShowActuator()) {
				Map actuatorMap = actuatorProviderOptional.get().getMethods();
				this.openAPIService.addTag(new HashSet<>(actuatorMap.values()), getTag());
				map.putAll(actuatorMap);
			}
			calculatePath(restControllers, map, locale, openAPI);
		});

		Optional securityOAuth2ProviderOptional = springDocProviders.getSpringSecurityOAuth2Provider();
		if (securityOAuth2ProviderOptional.isPresent()) {
			SecurityOAuth2Provider securityOAuth2Provider = securityOAuth2ProviderOptional.get();
			Map mapOauth = securityOAuth2Provider.getHandlerMethods();
			Map requestMappingMapSec = securityOAuth2Provider.getFrameworkEndpoints();
			Class[] additionalRestClasses = requestMappingMapSec.values().stream().map(AopUtils::getTargetClass).toArray(Class[]::new);
			AbstractOpenApiResource.addRestControllers(additionalRestClasses);
			calculatePath(requestMappingMapSec, mapOauth, locale, openAPI);
		}

		springDocProviders.getRouterFunctionProvider().ifPresent(routerFunctions -> routerFunctions.getRouterFunctionPaths()
				.ifPresent(routerBeans -> routerBeans.forEach((beanName, routerFunctionVisitor) -> getRouterFunctionPaths(beanName, routerFunctionVisitor, locale, openAPI))));

	}

	/**
	 * Calculate path.
	 *
	 * @param restControllers the rest controllers
	 * @param map the map
	 * @param locale the locale
	 * @param openAPI the open api
	 */
	protected void calculatePath(Map restControllers, Map map, Locale locale, OpenAPI openAPI) {
		TreeMap methodTreeMap = new TreeMap<>(byReversedRequestMappingInfos());
		methodTreeMap.putAll(map);
		Optional springWebProviderOptional = springDocProviders.getSpringWebProvider();
		springWebProviderOptional.ifPresent(springWebProvider -> {
			for (Map.Entry entry : methodTreeMap.entrySet()) {
				RequestMappingInfo requestMappingInfo = entry.getKey();
				HandlerMethod handlerMethod = entry.getValue();
				Set patterns = springWebProvider.getActivePatterns(requestMappingInfo);
				if (!CollectionUtils.isEmpty(patterns)) {
					Map regexMap = new LinkedHashMap<>();
					for (String pattern : patterns) {
						String operationPath = PathUtils.parsePath(pattern, regexMap);
						String[] produces = requestMappingInfo.getProducesCondition().getProducibleMediaTypes().stream().map(MimeType::toString).toArray(String[]::new);
						String[] consumes = requestMappingInfo.getConsumesCondition().getConsumableMediaTypes().stream().map(MimeType::toString).toArray(String[]::new);
						String[] headers = requestMappingInfo.getHeadersCondition().getExpressions().stream().map(Object::toString).toArray(String[]::new);
						String[] params = requestMappingInfo.getParamsCondition().getExpressions().stream().map(Object::toString).toArray(String[]::new);
						if ((isRestController(restControllers, handlerMethod, operationPath) || isActuatorRestController(operationPath, handlerMethod))
								&& isFilterCondition(handlerMethod, operationPath, produces, consumes, headers)) {
							Set requestMethods = requestMappingInfo.getMethodsCondition().getMethods();
							// default allowed requestmethods
							if (requestMethods.isEmpty())
								requestMethods = this.getDefaultAllowedHttpMethods();
							calculatePath(handlerMethod, operationPath, requestMethods, consumes, produces, headers, params,  locale, openAPI);
						}
					}
				}
			}
		});
	}


	/**
	 * By reversed request mapping infos comparator.
	 *
	 * @return the comparator
	 */
	private Comparator byReversedRequestMappingInfos() {
		return (o2, o1) ->  o1.toString().compareTo(o2.toString());
	}

	/**
	 * Calculate server url.
	 *
	 * @param request the request
	 * @param apiDocsUrl the api docs url
	 * @param locale the locale
	 */
	protected void calculateServerUrl(HttpServletRequest request, String apiDocsUrl, Locale locale) {
		super.initOpenAPIBuilder(locale);
		String calculatedUrl = getServerUrl(request, apiDocsUrl);
		openAPIService.setServerBaseUrl(calculatedUrl);
	}

	/**
	 * Gets server url.
	 *
	 * @param request the request
	 * @param apiDocsUrl the api docs url
	 * @return the server url
	 */
	protected abstract String getServerUrl(HttpServletRequest request, String apiDocsUrl);

}




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