27 lines
639 B
TypeScript
27 lines
639 B
TypeScript
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// AID(Cheep)
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// 長さ6の[2000年1月1日からの経過秒をbase36でエンコードしたもの] + 長さ3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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time = Math.floor(time / 1000);
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return time.toString(36);
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}
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function getRandom() {
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let str = '';
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for (let i = 0; i < 3; 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 genAidc(date: Date): string {
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return getTime(date.getTime()).padStart(6, CHARS[0]) + getRandom();
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}
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