27 lines
601 B
JavaScript
27 lines
601 B
JavaScript
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const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
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function randomID() {
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let rand = '';
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for (let i = 0; i < 12; i++) {
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rand += chars.charAt(Math.floor((Math.random() * chars.length)));
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}
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return rand;
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}
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function* checkId(Files, fileId, attempts) {
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if (attempts > 10) {
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return false;
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}
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const file = yield Files.findOne({'_id': fileId});
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if(file === null) {
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return fileId;
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} else {
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return checkId(randomID(), attempts++);
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}
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}
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export default function* (Files) {
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let attempts = 0;
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return yield checkId(Files, randomID(), attempts);
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}
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