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/*
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 *  *  *  *  * Copyright 2019-2022 the original author or authors.
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 *  *  *  *  * Licensed under the Apache License, Version 2.0 (the "License");
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 *  *  *  *  * Unless required by applicable law or agreed to in writing, software
 *  *  *  *  * distributed under the License is distributed on an "AS IS" BASIS,
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 *  *  *  *  * See the License for the specific language governing permissions and
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package org.springdoc.webflux.api;

import java.util.List;
import java.util.Locale;
import java.util.Optional;

import com.fasterxml.jackson.core.JsonProcessingException;
import io.swagger.v3.oas.annotations.Operation;
import org.apache.commons.lang3.StringUtils;
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.properties.SpringDocConfigProperties;
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 reactor.core.publisher.Mono;

import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import static org.springdoc.core.utils.Constants.API_DOCS_URL;
import static org.springdoc.core.utils.Constants.APPLICATION_OPENAPI_YAML;
import static org.springdoc.core.utils.Constants.DEFAULT_API_DOCS_URL_YAML;

/**
 * The type Open api resource.
 * @author bnasslahsen
 */
@RestController
public class OpenApiWebfluxResource extends OpenApiResource {


	/**
	 * Instantiates a new Open api webflux 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 customizers
	 * @param methodFilters the method filters
	 * @param springDocConfigProperties the spring doc config properties
	 * @param springDocProviders the spring doc providers
	 */
	public OpenApiWebfluxResource(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 webflux 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 customizers
	 * @param methodFilters the method filters
	 * @param springDocConfigProperties the spring doc config properties
	 * @param springDocProviders the spring doc providers
	 */
	@Autowired
	public OpenApiWebfluxResource(ObjectFactory openAPIBuilderObjectFactory, AbstractRequestService requestBuilder, GenericResponseService responseBuilder, OperationService operationParser, Optional> operationCustomizers, Optional> openApiCustomizers,Optional> routerOperationCustomizers, Optional> methodFilters, SpringDocConfigProperties springDocConfigProperties, SpringDocProviders springDocProviders) {
		super(openAPIBuilderObjectFactory, requestBuilder, responseBuilder, operationParser, operationCustomizers, openApiCustomizers,routerOperationCustomizers, methodFilters, springDocConfigProperties, springDocProviders);
	}

	/**
	 * Openapi json mono.
	 *
	 * @param serverHttpRequest the server http request
	 * @param apiDocsUrl the api docs url
	 * @param locale the locale
	 * @return the mono
	 * @throws JsonProcessingException the json processing exception
	 */
	@Operation(hidden = true)
	@GetMapping(value = API_DOCS_URL, produces = MediaType.APPLICATION_JSON_VALUE)
	@Override
	public Mono openapiJson(ServerHttpRequest serverHttpRequest, @Value(API_DOCS_URL) String apiDocsUrl, Locale locale)
			throws JsonProcessingException {
		return super.openapiJson(serverHttpRequest, apiDocsUrl, locale);
	}

	/**
	 * Openapi yaml mono.
	 *
	 * @param serverHttpRequest the server http request
	 * @param apiDocsUrl the api docs url
	 * @param locale the locale
	 * @return the mono
	 * @throws JsonProcessingException the json processing exception
	 */
	@Operation(hidden = true)
	@GetMapping(value = DEFAULT_API_DOCS_URL_YAML, produces = APPLICATION_OPENAPI_YAML)
	@Override
	public Mono openapiYaml(ServerHttpRequest serverHttpRequest,
			@Value(DEFAULT_API_DOCS_URL_YAML) String apiDocsUrl, Locale locale) throws JsonProcessingException {
		return super.openapiYaml(serverHttpRequest, apiDocsUrl, locale);
	}

	/**
	 * Gets server url.
	 *
	 * @param serverHttpRequest the server http request
	 * @param apiDocsUrl the api docs url
	 * @return the server url
	 */
	@Override
	protected String getServerUrl(ServerHttpRequest serverHttpRequest, String apiDocsUrl) {
		String requestUrl = decode(serverHttpRequest.getURI().toString());
		Optional springWebProviderOptional  = springDocProviders.getSpringWebProvider();
		String prefix = StringUtils.EMPTY;
		if(springWebProviderOptional.isPresent())
			prefix = springWebProviderOptional.get().findPathPrefix(springDocConfigProperties);
		return 	requestUrl.substring(0, requestUrl.length() - apiDocsUrl.length()- prefix.length());
	}

}