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	   Copyright 2020 t-io
	
	   Licensed under the Apache License, Version 2.0 (the "License");
	   you may not use this file except in compliance with the License.
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package org.tio.http.common;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.tio.core.ChannelContext;
import org.tio.core.Node;
import org.tio.core.Tio;
import org.tio.http.common.HttpConst.RequestBodyFormat;
import org.tio.http.common.session.HttpSession;
import org.tio.utils.SysConst;
import org.tio.utils.SystemTimer;
import org.tio.utils.hutool.StrUtil;

/**
 *
 * @author tanyaowu
 *
 */
public class HttpRequest extends HttpPacket {
	private static Logger			log					= LoggerFactory.getLogger(HttpRequest.class);
	private static final long		serialVersionUID	= -3849253977016967211L;
	private boolean					needForward			= false;
	private boolean					isForward			= false;
	public RequestLine				requestLine			= null;
	/**
	 * 请求参数
	 */
	private Map<String, Object[]>	params				= new HashMap<>();
	private List<Cookie>			cookies				= null;
	private Map<String, Cookie>		cookieMap			= null;
	private int						contentLength;
	private String					connection;
	private String					bodyString;
	private RequestBodyFormat		bodyFormat;
	private String					charset				= HttpConst.CHARSET_NAME;
	private Boolean					isAjax				= null;
	@SuppressWarnings("unused")
	private Boolean					isSupportGzip		= null;
	private HttpSession				httpSession;
	private Node					remote				= null;
	public ChannelContext			channelContext;
	public HttpConfig				httpConfig;
	private String					domain				= null;
	private String					host				= null;
//	private String					clientIp			= null;
	/**该HttpRequest对象的创建时间*/
	private long					createTime			= SystemTimer.currTime;
	private boolean					closed				= false;
	protected Map<String, String>	headers				= new HashMap<>();
	private Integer					forwardCount		= null;

	/**
	 * @author tanyaowu
	 * 2017年2月22日 下午4:14:40
	 */
	public HttpRequest(Node remote) {
		this.remote = remote;
	}

	public HttpRequest() {
	}

	/**
	 * 关闭连接
	 */
	public void close() {
		close(null);
	}

	/**
	 * 关闭连接
	 * @param remark
	 */
	public void close(String remark) {
		closed = true;
		Tio.remove(channelContext, remark);
	}

	public void addParam(String key, Object value) {
		if (value == null) {
			return;
		}
		Object[] existValue = params.get(key);
		if (existValue != null) {
			Object[] newExistValue = new Object[existValue.length + 1];
			if (value instanceof String) {
				newExistValue = new String[existValue.length + 1];
			} else if (value instanceof UploadFile) {
				newExistValue = new UploadFile[existValue.length + 1];
			}
			System.arraycopy(existValue, 0, newExistValue, 0, existValue.length);
			newExistValue[newExistValue.length - 1] = value;
			params.put(key, newExistValue);
		} else {
			Object[] newExistValue = null;//new Object[] { value };
			if (value instanceof String) {
				newExistValue = new String[] { (String) value };
			} else if (value instanceof UploadFile) {
				newExistValue = new UploadFile[] { (UploadFile) value };
			}
			params.put(key, newExistValue);
		}
	}

	/**
	 * 
	 * @param newPath
	 * @return
	 * @throws Exception
	 */
	public HttpResponse forward(String newPath) throws Exception {
		if (StrUtil.contains(newPath, '?')) {
			requestLine.path = StrUtil.subBefore(newPath, "?", false);
			requestLine.queryString = StrUtil.subAfter(newPath, "?", false);
		} else {
			requestLine.path = newPath;
			requestLine.queryString = null;
		}

		if (forwardCount == null) {
			forwardCount = 1;
		} else {
			forwardCount++;
		}
		if (forwardCount > httpConfig.maxForwardCount) {
			log.error("forwardCount[{}] is too large, newPath:{}", forwardCount, newPath);
			this.close();
			return null;
		}

		this.needForward = true;

		return HttpResponse.NULL_RESPONSE;

	}

	/**
	 * @return the bodyFormat
	 */
	public RequestBodyFormat getBodyFormat() {
		return bodyFormat;
	}

	/**
	 * 获取请求头中的User-Agent字段
	 * @return
	 * @author: tanyaowu
	 */
	public String getUserAgent() {
		return this.headers.get(HttpConst.RequestHeaderKey.User_Agent);
	}

	/**
	 * 获取请求头中的host字段，形如：www.t-io.org:8080, www.t-io.org等值
	 * @return
	 * @author: tanyaowu
	 */
	public String getHost() {
		if (host != null) {
			return host;
		}

		host = this.headers.get(HttpConst.RequestHeaderKey.Host);
		return host;
	}

	/**
	 * 获取真实的客户端ip
	 * @return
	 * @author tanyaowu
	 */
	public String getClientIp() {
		return remote.getIp();
//		if (clientIp == null) {
//			clientIp = IpUtils.getRealIp(this);
//		}
//		return clientIp;
	}

	public void addHeader(String key, String value) {
		headers.put(key, value);
	}

	public void addHeaders(Map<String, String> headers) {
		if (headers != null) {
			Set<Entry<String, String>> set = headers.entrySet();
			for (Entry<String, String> entry : set) {
				this.addHeader(entry.getKey(), entry.getValue());
			}
		}
	}

	/**
	 * 根据host字段，获取去除端口的纯域名部分的值，形如：www.t-io.org, t-io.org等值
	 * @return
	 * @author tanyaowu
	 */
	public String getDomain() {
		if (domain != null) {
			return domain;
		}
		if (StrUtil.isBlank(getHost())) {
			return null;
		}
		domain = StrUtil.subBefore(getHost(), ":", false);
		return domain;
	}

	/**
	 * @return the bodyString
	 */
	public String getBodyString() {
		return bodyString;
	}

	/**
	 * @return the channelContext
	 */
	public ChannelContext getChannelContext() {
		return channelContext;
	}

	/**
	 * @return the charset
	 */
	public String getCharset() {
		return charset;
	}

	/**
	 * @return the bodyLength
	 */
	public int getContentLength() {
		return contentLength;
	}

	public Cookie getCookie(String cooiename) {
		if (cookieMap == null) {
			return null;
		}
		return cookieMap.get(cooiename);
	}

	/**
	 * @return the cookieMap
	 */
	public Map<String, Cookie> getCookieMap() {
		return cookieMap;
	}

	//	/**
	//	 * @return the bodyBytes
	//	 */
	//	public byte[] getBodyBytes() {
	//		return bodyBytes;
	//	}
	//
	//	/**
	//	 * @param bodyBytes the bodyBytes to set
	//	 */
	//	public void setBodyBytes(byte[] bodyBytes) {
	//		this.bodyBytes = bodyBytes;
	//	}

	//	/**
	//	 * @return the userAgent
	//	 */
	//	public UserAgent getUserAgent() {
	//		return userAgent;
	//	}
	//
	//	/**
	//	 * @param userAgent the userAgent to set
	//	 */
	//	public void setUserAgent(UserAgent userAgent) {
	//		this.userAgent = userAgent;
	//	}

	/**
	 * @return the cookies
	 */
	public List<Cookie> getCookies() {
		return cookies;
	}

	/**
	 * @return the httpConfig
	 */
	public HttpConfig getHttpConfig() {
		return httpConfig;
	}

	/**
	 * @return the httpSession
	 */
	public HttpSession getHttpSession() {
		return httpSession;
	}

	public String getHeader(String key) {
		return headers.get(key);
	}

	/**
	 * @return the headers
	 */
	public Map<String, String> getHeaders() {
		return headers;
	}

	public void removeHeader(String key, String value) {
		headers.remove(key);
	}

	/**
	 * @return the isAjax
	 */
	public Boolean getIsAjax() {
		if (isAjax == null) {
			String X_Requested_With = this.getHeader(HttpConst.RequestHeaderKey.X_Requested_With);
			if (X_Requested_With != null && "XMLHttpRequest".equalsIgnoreCase(X_Requested_With)) {
				isAjax = true;
			} else {
				isAjax = false;
			}
		}

		return isAjax;
	}

	/**
	 * @return the isSupportGzip
	 */
	public Boolean getIsSupportGzip() {
		return true;
		//		if (isSupportGzip == null) {
		//			String Accept_Encoding = getHeader(HttpConst.RequestHeaderKey.Accept_Encoding);
		//			if (StrUtil.isNotBlank(Accept_Encoding)) {
		//				String[] ss = StrUtil.split(Accept_Encoding, ",");
		//				if (ArrayUtil.contains(ss, "gzip")) {
		//					isSupportGzip = true;
		//				} else {
		//					isSupportGzip = false;
		//				}
		//			} else {
		//				isSupportGzip = true;
		//			}
		//		}
		//		return isSupportGzip;
	}

	/**
	 * @return the params
	 */
	public Map<String, Object[]> getParams() {
		return params;
	}
	
	/**
	 * 把类型为数组的参数值转换成Object，相当于是取了数组的第一个值，便于业务开发（因为大部分参数值其实只有一个）
	 * @return
	 */
	public Map<String, Object> getParam() {
		Map<String, Object> params = new HashMap<>();
		if (getParams() != null) {
			for (String key : this.params.keySet()) {
				Object[] param = this.params.get(key);
				if (param != null && param.length >= 1) {
					params.put(key, param[0]);
				}
			}
		}
		return params;
	}

	public Object getObject(String name) {
		if (StrUtil.isBlank(name)) {
			return null;
		}
		
		Object[] values = params.get(name);
		if (values != null && values.length > 0) {
			Object obj = values[0];
			return obj;
		}
		return null;
	}

	/**
	 * 
	 * @param value
	 * @return
	 * @author: tanyaowu
	 */
	public String getParam(String name) {
		return (String)getObject(name);
	}

	/**
	 * 同getParam(String name)
	 * @param name
	 * @return
	 * @author tanyaowu
	 */
	public String getString(String name) {
		return getParam(name);
	}

	/**
	 * 
	 * @param name
	 * @return
	 * @author tanyaowu
	 */
	public UploadFile getUploadFile(String name) {
		Object[] values = params.get(name);
		if (values != null && values.length > 0) {
			Object obj = values[0];
			return (UploadFile) obj;
		}
		return null;
	}

	/**
	 * 
	 * @param name
	 * @return
	 * @author tanyaowu
	 */
	public Integer getInt(String name) {
		String value = getParam(name);
		if (StrUtil.isBlank(value)) {
			return null;
		}

		return Integer.parseInt(value);
	}

	public Short getShort(String name) {
		String value = getParam(name);
		if (StrUtil.isBlank(value)) {
			return null;
		}

		return Short.parseShort(value);
	}

	public Byte getByte(String name) {
		String value = getParam(name);
		if (StrUtil.isBlank(value)) {
			return null;
		}

		return Byte.parseByte(value);
	}

	public Long getLong(String name) {
		String value = getParam(name);
		if (StrUtil.isBlank(value)) {
			return null;
		}

		return Long.parseLong(value);
	}

	public Double getDouble(String name) {
		String value = getParam(name);
		if (StrUtil.isBlank(value)) {
			return null;
		}

		return Double.parseDouble(value);
	}

	public Float getFloat(String name) {
		String value = getParam(name);
		if (StrUtil.isBlank(value)) {
			return null;
		}

		return Float.parseFloat(value);
	}

	/**
	 * 
	 * @param name
	 * @return
	 * @author tanyaowu
	 */
	public Object[] getParamArray(String name) {
		Object[] values = params.get(name);
		return values;
	}

	public Node getRemote() {
		return remote;
	}

	/**
	 * @return the firstLine
	 */
	public RequestLine getRequestLine() {
		return requestLine;
	}

	/**
	 * @return
	 * @author tanyaowu
	 */
	@Override
	public String logstr() {
		String str = "\r\n请求ID_" + getId() + SysConst.CRLF + getHeaderString();
		if (null != getBodyString()) {
			str += getBodyString();
		}
		return str;
	}

	public void parseCookie(HttpConfig httpConfig) {
		String cookieline = headers.get(HttpConst.RequestHeaderKey.Cookie);
		if (StrUtil.isNotBlank(cookieline)) {
			cookies = new ArrayList<>();
			cookieMap = new HashMap<>();
			Map<String, String> _cookiemap = Cookie.getEqualMap(cookieline);
			Set<Entry<String, String>> set = _cookiemap.entrySet();
			List<Map<String, String>> cookieListMap = new ArrayList<>();
			for (Entry<String, String> cookieMapEntry : set) {
				HashMap<String, String> cookieOneMap = new HashMap<>();
				cookieOneMap.put(cookieMapEntry.getKey(), cookieMapEntry.getValue());
				cookieListMap.add(cookieOneMap);

				Cookie cookie = Cookie.buildCookie(cookieOneMap, httpConfig);
				cookies.add(cookie);
				cookieMap.put(cookie.getName(), cookie);
				//				log.error("{}, 收到cookie:{}", channelContext, cookie.toString());
			}
		}
	}

	/**
	 * @param bodyFormat the bodyFormat to set
	 */
	public void setBodyFormat(RequestBodyFormat bodyFormat) {
		this.bodyFormat = bodyFormat;
	}

	/**
	 * @param bodyString the bodyString to set
	 */
	public void setBodyString(String bodyString) {
		this.bodyString = bodyString;
	}

	/**
	 * @param channelContext the channelContext to set
	 */
	public void setChannelContext(ChannelContext channelContext) {
		this.channelContext = channelContext;
	}

	/**
	 * @param charset the charset to set
	 */
	public void setCharset(String charset) {
		this.charset = charset;
	}

	/**
	 * @param bodyLength the bodyLength to set
	 */
	public void setContentLength(int contentLength) {
		this.contentLength = contentLength;
	}

	/**
	 * @param cookieMap the cookieMap to set
	 */
	public void setCookieMap(Map<String, Cookie> cookieMap) {
		this.cookieMap = cookieMap;
	}

	/**
	 * @param cookies the cookies to set
	 */
	public void setCookies(List<Cookie> cookies) {
		this.cookies = cookies;
	}

	/**
	 * 设置好header后，会把cookie等头部信息也设置好
	 * @param headers the headers to set
	 * @param channelContext
	 */
	public void setHeaders(Map<String, String> headers) {
		this.headers = headers;
		if (headers != null) {
			parseCookie(httpConfig);
		}

		//		String Sec_WebSocket_Key = headers.get(HttpConst.RequestHeaderKey.Sec_WebSocket_Key);
		//		if (StrUtil.isNotBlank(Sec_WebSocket_Key)) {
		//			ImSessionContext httpSession = channelContext.get();
		//			httpSession.setWebsocket(true);
		//		}
	}

	/**
	 * @param httpConfig the httpConfig to set
	 */
	public void setHttpConfig(HttpConfig httpConfig) {
		this.httpConfig = httpConfig;
	}

	/**
	 * @param httpSession the httpSession to set
	 */
	public void setHttpSession(HttpSession httpSession) {
		this.httpSession = httpSession;
	}

	/**
	 * @param isAjax the isAjax to set
	 */
	public void setIsAjax(Boolean isAjax) {
		this.isAjax = isAjax;
	}

	/**
	 * @param isSupportGzip the isSupportGzip to set
	 */
	public void setIsSupportGzip(Boolean isSupportGzip) {
		this.isSupportGzip = isSupportGzip;
	}

	/**
	 * @param params the params to set
	 */
	public void setParams(Map<String, Object[]> params) {
		this.params = params;
	}

	public void setRemote(Node remote) {
		this.remote = remote;
	}

	/**
	 * @param requestLine the requestLine to set
	 */
	public void setRequestLine(RequestLine requestLine) {
		this.requestLine = requestLine;
	}

	public long getCreateTime() {
		return createTime;
	}

	public void setCreateTime(long createTime) {
		this.createTime = createTime;
	}

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(this.requestLine.toString()).append(SysConst.CRLF);

		if (this.getHeaderString() != null) {
			sb.append(this.getHeaderString()).append(SysConst.CRLF);
		}

		if (this.getBodyString() != null) {
			sb.append(this.getBodyString());
		}

		return sb.toString();
	}

	public boolean isClosed() {
		return closed;
	}

	public void setClosed(boolean closed) {
		this.closed = closed;
	}

	/**
	 * @return the connection
	 */
	public String getConnection() {
		return connection;

		//		if (httpConfig.compatible1_0 || connection != null) {
		//			return connection;
		//		} else {
		//			String connection = headers.get(HttpConst.RequestHeaderKey.Connection);
		//			if (connection != null) {
		//				connection = connection.toLowerCase();
		//				setConnection(connection);
		//				return connection;
		//			} else {
		//				return null;
		//			}
		//		}

	}

	/**
	 * @param connection the connection to set
	 */
	public void setConnection(String connection) {
		this.connection = connection;
	}

	public String getReferer() {
		return getHeader(HttpConst.RequestHeaderKey.Referer);
	}

	public boolean isNeedForward() {
		return needForward;
	}

	public void setNeedForward(boolean needForward) {
		this.needForward = needForward;
	}

	public boolean isForward() {
		return isForward;
	}

	public void setForward(boolean isForward) {
		this.isForward = isForward;
	}

	//	/**
	//	 * @return the httpSession
	//	 */
	//	public HttpSession getHttpSession() {
	//		return httpSession;
	//	}
	//
	//	/**
	//	 * @param httpSession the httpSession to set
	//	 */
	//	public void setHttpSession(HttpSession httpSession) {
	//		this.httpSession = httpSession;
	//	}

}
