package org.ssssssss.magicapi.swagger;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.bind.annotation.ResponseBody;
import org.ssssssss.magicapi.config.MappingHandlerMapping;
import org.ssssssss.magicapi.model.ApiInfo;
import org.ssssssss.magicapi.provider.GroupServiceProvider;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Objects;

/**
 * 生成swagger用的json
 */
public class SwaggerProvider {

	private MappingHandlerMapping mappingHandlerMapping;

	/**
	 * 描述信息
	 */
	private String description;

	/**
	 * 标题
	 */
	private String title;

	/**
	 * 版本号
	 */
	private String version;

	/**
	 * 基础路径
	 */
	private String basePath;

	private GroupServiceProvider groupServiceProvider;

	public void setMappingHandlerMapping(MappingHandlerMapping mappingHandlerMapping) {
		this.mappingHandlerMapping = mappingHandlerMapping;
	}

	public void setGroupServiceProvider(GroupServiceProvider groupServiceProvider) {
		this.groupServiceProvider = groupServiceProvider;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public void setVersion(String version) {
		this.version = version;
	}

	public void setBasePath(String basePath) {
		this.basePath = basePath;
	}

	@ResponseBody
	public SwaggerEntity swaggerJson() {
		List<ApiInfo> infos = mappingHandlerMapping.getApiInfos();
		SwaggerEntity swaggerEntity = new SwaggerEntity();
		SwaggerEntity.License license = new SwaggerEntity.License("MIT", "https://gitee.com/ssssssss-team/magic-api/blob/master/LICENSE");
		swaggerEntity.setInfo(new SwaggerEntity.Info(this.description, this.version, this.title, license));
		swaggerEntity.setBasePath(this.basePath);
		ObjectMapper mapper = new ObjectMapper();
		for (ApiInfo info : infos) {
			String groupName = groupServiceProvider.getFullName(info.getGroupId()).replace("/", "-");
			String requestPath = "/" + mappingHandlerMapping.getRequestPath(info.getGroupId(), info.getPath());
			SwaggerEntity.Path path = new SwaggerEntity.Path();
			path.addTag(groupName);
			boolean hasBody = false;
			try {
				List<SwaggerEntity.Parameter> parameters = parseParameters(mapper, info);
				hasBody = parameters.stream().anyMatch(it -> "body".equals(it.getIn()));
				parameters.forEach(path::addParameter);
				path.addResponse("200", mapper.readValue(Objects.toString(info.getResponseBody(), "{}"), Object.class));
			} catch (Exception ignored) {
			}
			if(hasBody){
				path.addConsume("application/json");
			}else{
				path.addConsume("*/*");
			}
			path.addProduce("application/json");
			path.setSummary(StringUtils.defaultIfBlank(info.getDescription(), info.getName()));

			swaggerEntity.addPath(requestPath, info.getMethod(), path);
		}
		return swaggerEntity;
	}

	private List<SwaggerEntity.Parameter> parseParameters(ObjectMapper mapper, ApiInfo info) {
		List<SwaggerEntity.Parameter> parameters = new ArrayList<>();
		info.getParameters().forEach(it-> parameters.add(new SwaggerEntity.Parameter(it.getName(),"query","string",it.getDescription(),it.getValue())));
		info.getHeaders().forEach(it-> parameters.add(new SwaggerEntity.Parameter(it.getName(),"header","string",it.getDescription(),it.getValue())));
		try {
			Object object = mapper.readValue(info.getRequestBody(),Object.class);
			if(object instanceof List || object instanceof Map){
				parameters.add(new SwaggerEntity.Parameter("body", "body", object instanceof List ? "array": "object", null, object));
			}
		} catch (Exception ignored) {
		}
		return parameters;
	}
}