export function IDValidator() {
	var param = {
		error : {
			longNumber : '长数字存在精度问题，请使用字符串传值！ Long number is not allowed, because the precision of the Number In JavaScript.'
		}
	};
	var util = {
		checkArg : function(id) {
			var argType = (typeof id);
 
			switch (argType) {
			case 'number':
				// long number not allowed
				id = id.toString();
				if (id.length > 15) {
					this.error(param.error.longNumber);
					return false;
				}
				break;
			case 'string':
				break;
			default:
				return false;
			}
			id = id.toUpperCase();
			var code = null;
			if (id.length === 18) {
				// 18位
				code = {
					body : id.slice(0, 17),
					checkBit : id.slice(-1),
					type : 18
				};
			} else if (id.length === 15) {
				// 15位
				code = {
					body : id,
					type : 15
				};
			} else {
				return false;
			}
			return code;
		}
		// 地址码检查
		,
		checkAddr : function(addr, GB2260) {
			var addrInfo = this.getAddrInfo(addr, GB2260);
			return (addrInfo === false ? false : true);
		}
		// 取得地址码信息
		,
		getAddrInfo : function(addr, GB2260) {
			GB2260 = GB2260 || null;
			// 查询GB/T2260,没有引入GB2260时略过
			if (GB2260 === null) {
				return addr;
			}
			if (!GB2260.hasOwnProperty(addr)) {
				// 考虑标准不全的情况，搜索不到时向上搜索
				var tmpAddr;
				tmpAddr = addr.slice(0, 4) + '00';
				if (!GB2260.hasOwnProperty(tmpAddr)) {
					tmpAddr = addr.slice(0, 2) + '0000';
					if (!GB2260.hasOwnProperty(tmpAddr)) {
						return false;
					} else {
						return GB2260[tmpAddr] + '未知地区';
					}
				} else {
					return GB2260[tmpAddr] + '未知地区';
				}
			} else {
				return GB2260[addr];
			}
		}
		// 生日码检查
		,
		checkBirth : function(birth) {
			var year, month, day;
			if (birth.length == 8) {
				year = parseInt(birth.slice(0, 4), 10);
				month = parseInt(birth.slice(4, 6), 10);
				day = parseInt(birth.slice(-2), 10);
			} else if (birth.length == 6) {
				year = parseInt('19' + birth.slice(0, 2), 10);
				month = parseInt(birth.slice(2, 4), 10);
				day = parseInt(birth.slice(-2), 10);
			} else {
				return false;
			}
			// TODO 是否需要判断年份
			/*
			 * if( year<1800 ){ return false; }
			 */
			// TODO 按月份检测
			if (month > 12 || month === 0 || day > 31 || day === 0) {
				return false;
			}
 
			return true;
		}
		// 顺序码检查
		,
		checkOrder : function(order) {
			// 暂无需检测
 
			return true;
		}
		// 加权
		,
		weight : function(t) {
			return Math.pow(2, t - 1) % 11;
		}
		// 随机整数
		,
		rand : function(max, min) {
			min = min || 1;
			return Math.round(Math.random() * (max - min)) + min;
		}
		// 数字补位
		,
		str_pad : function(str, len, chr, right) {
			str = str.toString();
			len = len || 2;
			chr = chr || '0';
			right = right || false;
			if (str.length >= len) {
				return str;
			} else {
				for (var i = 0, j = len - str.length; i < j; i++) {
					if (right) {
						str = str + chr;
					} else {
						str = chr + str;
					}
				}
				return str;
			}
		}
		// 抛错
		,
		error : function(msg) {
			var e = new Error();
			e.message = 'IDValidator: ' + msg;
			throw e;
		}
	};
	var _IDValidator = function(GB2260) {
		if (typeof GB2260 !== "undefined") {
			this.GB2260 = GB2260;
		}
		// 建立cache
		this.cache = {};
	};
	_IDValidator.prototype = {
		isValid : function(id) {
			var GB2260 = this.GB2260 || null;
			var code = util.checkArg(id);
			if (code === false) {
				return false;
			}
			// 查询cache
			if (this.cache.hasOwnProperty(id)
					&& typeof this.cache[id].valid !== 'undefined') {
				return this.cache[id].valid;
			} else {
				if (!this.cache.hasOwnProperty(id)) {
					this.cache[id] = {};
				}
			}
 
			var addr = code.body.slice(0, 6);
			var birth = (code.type === 18 ? code.body.slice(6, 14) : code.body
					.slice(6, 12));
			var order = code.body.slice(-3);
 
			if (!(util.checkAddr(addr, GB2260) && util.checkBirth(birth) && util
					.checkOrder(order))) {
				this.cache[id].valid = false;
				return false;
			}
 
			// 15位不含校验码，到此已结束
			if (code.type === 15) {
				this.cache[id].valid = true;
				return true;
			}
 
			/* 校验位部分 */
 
			// 位置加权
			var posWeight = [];
			for (var i = 18; i > 1; i--) {
				var wei = util.weight(i);
				posWeight[i] = wei;
			}
 
			// 累加body部分与位置加权的积
			var bodySum = 0;
			var bodyArr = code.body.split('');
			for (var j = 0; j < bodyArr.length; j++) {
				bodySum += (parseInt(bodyArr[j], 10) * posWeight[18 - j]);
			}
 
			// 得出校验码
			var checkBit = 12 - (bodySum % 11);
			if (checkBit == 10) {
				checkBit = 'X';
			} else if (checkBit > 10) {
				checkBit = checkBit % 11;
			}
			checkBit = (typeof checkBit === 'number' ? checkBit.toString()
					: checkBit);
 
			// 检查校验码
			if (checkBit !== code.checkBit) {
				this.cache[id].valid = false;
				return false;
			} else {
				this.cache[id].valid = true;
				return true;
			}
 
		}
 
		// 分析详细信息
		,
		getInfo : function(id) {
			var GB2260 = this.GB2260 || null;
			// 号码必须有效
			if (this.isValid(id) === false) {
				return false;
			}
			// TODO 复用此部分
			var code = util.checkArg(id);
 
			// 查询cache
			// 到此时通过isValid已经有了cache记录
			if (typeof this.cache[id].info !== 'undefined') {
				return this.cache[id].info;
			}
 
			var addr = code.body.slice(0, 6);
			var birth = (code.type === 18 ? code.body.slice(6, 14) : code.body
					.slice(6, 12));
			var order = code.body.slice(-3);
 
			var info = {};
			info.addrCode = addr;
			if (GB2260 !== null) {
				info.addr = util.getAddrInfo(addr, GB2260);
			}
			info.birth = (code.type === 18 ? (([ birth.slice(0, 4),
					birth.slice(4, 6), birth.slice(-2) ]).join('-')) : ([
					'19' + birth.slice(0, 2), birth.slice(2, 4),
					birth.slice(-2) ]).join('-'));
			info.sex = (order % 2 === 0 ? 0 : 1);
			info.length = code.type;
			if (code.type === 18) {
				info.checkBit = code.checkBit;
			}
 
			// 记录cache
			this.cache[id].info = info;
 
			return info;
		}
 
		// 仿造一个号
		,
		makeID : function(isFifteen) {
			var GB2260 = this.GB2260 || null;
 
			// 地址码
			var addr = null;
			if (GB2260 !== null) {
				var loopCnt = 0;
				while (addr === null) {
					// 防止死循环
					if (loopCnt > 10) {
						addr = 110101;
						break;
					}
					var prov = util.str_pad(util.rand(50), 2, '0');
					var city = util.str_pad(util.rand(20), 2, '0');
					var area = util.str_pad(util.rand(20), 2, '0');
					var addrTest = [ prov, city, area ].join('');
					if (GB2260[addrTest]) {
						addr = addrTest;
						break;
					}
				}
			} else {
				addr = 110101;
			}
 
			// 出生年
			var yr = util.str_pad(util.rand(99, 50), 2, '0');
			var mo = util.str_pad(util.rand(12, 1), 2, '0');
			var da = util.str_pad(util.rand(28, 1), 2, '0');
			if (isFifteen) {
				return addr + yr + mo + da
						+ util.str_pad(util.rand(999, 1), 3, '1');
			}
 
			yr = '19' + yr;
			var body = addr + yr + mo + da
					+ util.str_pad(util.rand(999, 1), 3, '1');
 
			// 位置加权
			var posWeight = [];
			for (var i = 18; i > 1; i--) {
				var wei = util.weight(i);
				posWeight[i] = wei;
			}
 
			// 累加body部分与位置加权的积
			var bodySum = 0;
			var bodyArr = body.split('');
			for (var j = 0; j < bodyArr.length; j++) {
				bodySum += (parseInt(bodyArr[j], 10) * posWeight[18 - j]);
			}
 
			// 得出校验码
			var checkBit = 12 - (bodySum % 11);
			if (checkBit == 10) {
				checkBit = 'X';
			} else if (checkBit > 10) {
				checkBit = checkBit % 11;
			}
			checkBit = (typeof checkBit === 'number' ? checkBit.toString()
					: checkBit);
 
			return (body + checkBit);
		}
 
	};// _IDValidator
	var GB2260 = GB2260 == null ? "" : GB2260;
	return new _IDValidator(GB2260);
}