define([ "dojo/_base/declare", "dojo/_base/lang", "implab/safe" ,"./ContentType", "./BaseResponse", "./Cookie" ], function(declare, lang,safe, ContentType, BaseResponse, Cookie) {
    return declare(BaseResponse, {
        statusCode : 0,
        _headers : null,
        content : null,
        _contentType : null,
        _cookies : null,
        
        getContentType : function() {
            return this._contentType;
        },
        
        setContentType : function(value) {
            if (value) {
                this._contentType = value instanceof ContentType ? value : ContentType.parse(value.toString());
                this._headers["Content-Type"] = this._contentType.toString();
            } else {
                this._contentType = null;
                delete this._headers["Content-Type"];
            }
            this._headers["Content-Type"] = value ? value.toString() : value;
        },
        
        /**
         * Записывает cookies
         * @cookie {String|Cookie} печенька или имя печеньки или печенька сохраненная в строку.
         * @value? {*} если {cookie} строка с именем, то в этом параметре передается значение.
         * @options? {Object} если {cookie} строка с именем, то в этом параметре передаются дополнительные свойства печенек.
         */
        setCookie : function(cookie /*, value, options*/) {
            if (arguments.length == 1) {
                if (safe.isString(cookie))
                    cookie = Cookie.parse(cookie);
                safe.argumentOfType(cookie, Cookie, "cookie");
                this._cookies[cookie.name] = cookie;
            } else {
                safe.argumentNotEmptyString(cookie,"cookie");
                let value = arguments[1];
                let options = arguments[2];
                
                let cc = new Cookie(cookie,value,options);
                
                this._cookies[cc.name] = cc;
            }
        },
        
        _setCookies : function(cookies) {
            if (!(cookies instanceof Array))
                cookies = [cookies];
            let me = this;
            cookies.forEach(function(cookie){
                me.setCookie(cookie);
            });
        },
        
        forgetCookie : function(name) {
            this.setCookie(new Cookie(name,"__erased__", { maxAge : 0 }));
        },
        
        setHeader : function(name, value) {
            if (!name)
                throw "A name is requried";
            name = this._normalizeHeaderName(name);
            
            if (name == "Content-Type")
                this.setContentType(value);
            if (name == "Set-Cookie")
                this._setCookies(value);
            else
                this._headers[name] = value;
        },
        
        getHeader : function(name) {
            if (!name)
                throw "A name is requried";
            name = this._normalizeHeaderName(name);
            
            return this._headers[name];
        },
        
        _normalizeHeaderName : function(name) {
            return name.toLowerCase().replace(/\b\w/g, function(s) {
                return s.toUpperCase();
            });
        },
        
        constructor : function(content, options) {
            this._headers = {};
            this._cookies = {};
            
            this.content = content;
            this.statusCode = content ? 200 : 203;
            
            if (options) {
                if ("statusCode" in options)
                    this.statusCode = options.statusCode;
                if ("headers" in options) {
                    for ( let header in options.headers)
                        this.setHeader(header, options.headers[header]);
                }
                if ("contentType" in options)
                    this.setContentType(options.contentType);
            }
        },
        
        send : function(serverResponse) {
            if (!serverResponse)
                throw "ServerResponse is required";
            
            this.writeHead(serverResponse);
            
            this.writeEntity(serverResponse);
            
            serverResponse.end();
        },
        
        writeHead : function(serverResponse) {
            let headers = lang.clone(this._headers);
            let cookies = [];
            for (let key in this._cookies)
                cookies.push(this._cookies[key].toString());
            headers["Set-Cookie"] = cookies;
            
            serverResponse.writeHead(this.statusCode, headers);
        },
        
        writeEntity : function(serverResponse) {
            if (this.content instanceof Function) {
                this.content(serverResponse);
            } else if (this.content) {
                serverResponse.write(this.content, this._contentType ? this._contentType.parameters.charset : undefined);
            }
        }
        
    
    });
});