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const db = require('../service/db');
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const coll = db.collection('system');
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async function get(_id) {
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const doc = await coll.findOne({ _id });
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if (doc) return doc.value;
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return null;
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}
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async function update(_id, operation, config) {
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await coll.findOneAndUpdate({ _id }, operation, config);
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return get(_id);
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}
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async function set(_id, value) {
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await coll.findOneAndUpdate({ _id }, { $set: { value } }, { upsert: true });
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return get(_id);
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}
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/**
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* Increments the counter.
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* @returns {number} Integer value after increment.
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*/
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function inc(field) {
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return update(field, { $inc: { value: 1 } }, { upsert: true });
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}
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global.Hydro.model.system = module.exports = {
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get,
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update,
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inc,
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set,
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};
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