48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
'use strict';
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async function upsert(table, items, duplicatesById, identifier = 'id', knex) {
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const { insert, update } = items.reduce((acc, item) => {
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if (duplicatesById[item[identifier]]) {
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return {
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...acc,
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update: [
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...acc.update,
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{
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...duplicatesById[item[identifier]],
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...item,
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},
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],
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};
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}
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return {
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...acc,
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insert: [
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...acc.insert,
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item,
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],
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};
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},
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{
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insert: [],
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update: [],
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});
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if (knex) {
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console.log(`${table}: Inserting ${insert.length}`);
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console.log(`${table}: Updating ${update.length}`);
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return Promise.all([
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knex(table).insert(insert),
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knex.transaction(async trx => Promise.all(update.map(item => trx
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.where({ id: item.id })
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.update(item)
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.into(table)))),
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]);
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}
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return { insert, update };
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}
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module.exports = upsert;
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