rudeshark.net/src/server/api/endpoints/username/available.ts

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import $ from 'cafy';
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import User from '../../../../models/user';
import { validateUsername } from '../../../../models/user';
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/**
* Check available username
*/
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export default async (params: any) => new Promise(async (res, rej) => {
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// Get 'username' parameter
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const [username, usernameError] = $.str.pipe(validateUsername).get(params.username);
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if (usernameError) return rej('invalid username param');
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// Get exist
const exist = await User
.count({
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host: null,
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usernameLower: username.toLowerCase()
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}, {
limit: 1
});
// Reply
res({
available: exist === 0
});
});