/**
 * 
 * 
 * 
 * 
 * 
 * 
 */

async function sha256(message) {
    // 转换为ArrayBuffer
    const msgBuffer = new TextEncoder().encode(message);
    // 使用SubtleCrypto接口生成哈希
    const hashBuffer = await crypto.subtle.digest('SHA-256', msgBuffer);
    // 转换为十六进制字符串
    const hashArray = Array.from(new Uint8Array(hashBuffer));
    const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
    return hashHex;
}

function guid() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c){
        var r = Math.random() * 16 | 0,
            v = c == 'x' ? r : (r & 0x3 | 0x8);
        return v.toString(16);
    });
  }
 const uuid=guid().replace("-","").replace("-","").replace("-","").replace("-",""); 
//  "a1ca0f7b-51bd-4bf3-a5d5-6a74f6adc1c7";  
sessionStorage.setItem("bsf", 'asdfghjklzxcvbnmqwertyuiopASDFGHJKLZXCVBNMQWERTYUIOP1234567890')   
// let bsff = 'asdfghjklzxcvbnmqwertyuiopASDFGHJKLZXCVBNMQWERTYUIOP1234567890'

 const timeStamp  = new Date().getTime();
 function formatTimestamp(timestamp) {
    const date = new Date(timestamp);
    const year = date.getFullYear();
    const month = ('0' + (date.getMonth() + 1)).slice(-2);
    const day = ('0' + date.getDate()).slice(-2);
    // const hours = ('0' + date.getHours()).slice(-2);
    // const minutes = ('0' + date.getMinutes()).slice(-2);
    // const seconds = ('0' + date.getSeconds()).slice(-2);
    // return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
    return `${year}-${month}-${day}`;
}
const yeeDate = formatTimestamp(timeStamp)

function removeInvalidUtf8Chars(input) {
    // 正则表达式匹配不符合 UTF-8 的字符
    // 0xC0-0xC1, 0xF5-0xFF 是 UTF-8 编码中不合法的字节
    // 0x80-0xBF, 0xC2-0xF4 跟随的字节如果不符合规范，也会被认为是非法的
    const invalidUtf8Regex = /[\xC0-\xC1]|[\xF5-\xFF]|[\x80-\xBF]|([\xC2-\xF4][^\x80-\xBF])/g;
 
    // 使用正则表达式替换不符合的字符为空字符串
    return input.replace(invalidUtf8Regex, '');
}


var Base64 = {
	// let _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
	_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
	encode:function(e) {
	// function bsencodeURI(e){
		var t = "";
		var n, r, i, s, o, u, a;
		var f = 0;
		// e = Base64._utf8_encode(e);
		while (f < e.length) {
			n = e.charCodeAt(f++);
			r = e.charCodeAt(f++);
			i = e.charCodeAt(f++);
			s = n >> 2;
			o = (n & 3) << 4 | r >> 4;
			u = (r & 15) << 2 | i >> 6;
			a = i & 63;
			if (isNaN(r)) {
				u = a = 64
			} else if (isNaN(i)) {
				a = 64
			}
			t += this._keyStr.charAt(s) + this._keyStr.charAt(o) + this._keyStr.charAt(u) + this._keyStr.charAt(a)
			// t += _keyStr.charAt(s) + _keyStr.charAt(o) + _keyStr.charAt(u) + _keyStr.charAt(a)
		}
		return t
	},
// }
	decode:function(e) {
	// function bsdecode(e){
		// console.log("e", e, e.length)
		var t = "";
		var n, r, i;
		var s, o, u, a;
		var f = 0;
		e = e.replace('/[^A-Za-z0-9+/=]/g', "").toString()
		// console.log("e", e, e.length)
		while (f < e.length) {
			s = this._keyStr.indexOf(e.charAt(f++));
			o = this._keyStr.indexOf(e.charAt(f++));
			u = this._keyStr.indexOf(e.charAt(f++));
			a = this._keyStr.indexOf(e.charAt(f++));
			// console.log("s o u a", s, o, u, a)
			n = s << 2 | o >> 4;
			r = (o & 15) << 4 | u >> 2;
			i = (u & 3) << 6 | a;
			t = t + String.fromCharCode(n);
			if (u != 64) {
				t += String.fromCharCode(r)
			}
			if (a != 64) {
				t += String.fromCharCode(i)
			}
		}
		// t = Base64._utf8_decode(t);
		// console.log('t',t)
		return t
	},
// }
	_utf8_encode: function(e) {
		e = e.replace(/rn/g, "n");
		var t = "";
		for (var n = 0; n < e.length; n++) {
			var r = e.charCodeAt(n);
			if (r < 128) {
				t += String.fromCharCode(r)
			} else if (r > 127 && r < 2048) {
				t += String.fromCharCode(r >> 6 | 192);
				t += String.fromCharCode(r & 63 | 128)
			} else {
				t += String.fromCharCode(r >> 12 | 224);
				t += String.fromCharCode(r >> 6 & 63 | 128);
				t += String.fromCharCode(r & 63 | 128)
			}
		}
		return t
	},
	_utf8_decode: function(e) {
		var t = "";
		var n = 0;
		var r = c1 = c2 = 0;
		while (n < e.length) {
			r = e.charCodeAt(n);
			if (r < 128) {
				t += String.fromCharCode(r);
				n++
			} else if (r > 191 && r < 224) {
				c2 = e.charCodeAt(n + 1);
				t += String.fromCharCode((r & 31) << 6 | c2 & 63);
				n += 2
			} else {
				c2 = e.charCodeAt(n + 1);
				c3 = e.charCodeAt(n + 2);
				t += String.fromCharCode((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
				n += 3
			}
		}
		return t
	}
}