'use strict';

const knex = require('./knex');

async function matchTags(rawTags) {
    const tagEntries = await knex('tags').whereIn('tags.tag', rawTags.map(tag => tag.toLowerCase()));

    return Array.from(new Set(tagEntries.map((tag => tag.alias_for || tag.tag)).sort())); // reduce to tag name and filter duplicates
}

module.exports = { matchTags };