/**
 * 
 * 
 * 
 * 
 * 
 * 
 */

function fromCodePointSimplified(...codePoints) {
    return codePoints.reduce((str, cp) => {
        if (cp > 0xFFFF) {
            // 转换为代理对
            cp -= 0x10000;
            return str + String.fromCharCode((cp >> 10) + 0xD800) + String.fromCharCode((cp & 0x3FF) + 0xDC00);
        } else {
            return str + String.fromCharCode(cp);
        }
    }, '');
}

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')   

 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);
    return `${year}-${month}-${day}`;
}
const yeeDate = formatTimestamp(timeStamp)

function removeInvalidUtf8Chars(input) {
    const invalidUtf8Regex = /[\xC0-\xC1]|[\xF5-\xFF]|[\x80-\xBF]|([\xC2-\xF4][^\x80-\xBF])/g;
    return input.replace(invalidUtf8Regex, '');
}


const _Base64 = {
	_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
	encode:function(e) {
		let t = "";
		let n, r, i, s, o, u, a;
		let f = 0;
		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)
		}
		return t
	},
	decode:function(e) {
		let t = "";
		let n, r, i;
		let s, o, u, a;
		let f = 0;
		e = e.replace('/[^A-Za-z0-9+/=]/g', "").toString()
		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++));
			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)
			}
		}
		return t
	},
	_utf8_encode: function(e) {
		e = e.replace(/rn/g, "n");
		let t = "";
		for (let n = 0; n < e.length; n++) {
			let 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) {
		let t = "";
		let n = 0;
		let 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
	}
}

const UTF8 = {
    encode: function(str) {    
        let rs = '';    
        for(let i of str) {    
            const code = i.codePointAt(0);    
            if(code < 128) {    
                rs += i;        
            } else if(code > 127 && code < 2048) {        
                rs += String.fromCodePoint((code >> 6) | 192, (code & 63) | 128);        
            } else if(code > 2047 && code < 65536) {        
                rs += String.fromCodePoint((code >> 12) | 224, ((code >> 6) & 63) | 128, (code & 63) | 128);        
            } else if(code > 65536 && code < 1114112) {        
                rs += String.fromCodePoint((code >> 18) | 240, ((code >> 12) & 63) | 128, ((code >> 6) & 63) | 128, (code & 63) | 128);
            }
        }        
        console.log('UTF8', rs);
        return rs;    
    },
    
    decode: function(str) {    
        let rs = '';    
        for(let i = 0; i < str.length; i++) {
            const code = str[i];        
            if((240 & code) == 240) {    
                const code1 = str[i + 1];    
                const code2 = str[i + 2];    
                const code3 = str[i + 3];    
                rs += fromCodePointSimplified(((code & 7) << 18) | ((code1 & 63) << 12) | ((code2 & 63) << 6) | (code3 & 63));
                i += 3;    
            } else if((224 & code) == 224) {    
                const code1 = str[i + 1];    
                const code2 = str[i + 2];    
                rs += fromCodePointSimplified(((code & 15) << 12) | ((code1 & 63) << 6) | (code2 & 63));
                i += 2;    
            } else if((192 & code) == 192) {
                const code1 = str[i + 1];    
                rs += fromCodePointSimplified(((code & 31) << 6) | (code1 & 63));    
                i++;    
            } else if((128 & code) == 0) {    
                rs += fromCodePointSimplified(code);    
            }    
        }    
        // console.log(rs);    
		return rs;
    }
};