27 lines
642 B
TypeScript
27 lines
642 B
TypeScript
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// AID
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// 長さ8の[2000年1月1日からの経過ミリ秒をbase36でエンコードしたもの] + 長さnの[ランダムな文字列]
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const CHARS = '0123456789abcdefghijklmnopqrstuvwxyz';
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const TIME2000 = 946684800000;
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function getTime(time: number) {
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time = time - TIME2000;
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if (time < 0) time = 0;
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return time.toString(36);
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}
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function getRandom(length: number) {
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let str = '';
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for (let i = 0; i < length; i++) {
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str += CHARS[Math.floor(Math.random() * CHARS.length)];
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}
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return str;
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}
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export function genAid(date: Date, rand: number): string {
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return getTime(date.getTime()).padStart(8, CHARS[0]) + getRandom(rand);
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}
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