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

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/**
* Module dependencies
*/
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import $ from 'cafy';
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import User from '../../models/user';
import { validateUsername } from '../../models/user';
/**
* Check available username
*
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* @param {any} params
* @return {Promise<any>}
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*/
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module.exports = async (params) => new Promise(async (res, rej) => {
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// Get 'username' parameter
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const [username, usernameError] = $(params.username).string().pipe(validateUsername).$;
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if (usernameError) return rej('invalid username param');
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// Get exist
const exist = await User
.count({
username_lower: username.toLowerCase()
}, {
limit: 1
});
// Reply
res({
available: exist === 0
});
});