const Queue = require('../queue');

module.exports = class QueueId extends Queue {
  async onConsume(msg) {
    const {consumer, conf} = this;
    const data = JSON.parse(msg.content.toString());

    if (consumer.conf.debug)
      console.debug('Message:'.blue, this.name.yellow, data.table);

    const table = conf.includeSchema[data.schema][data.table]
    const {query, key} = table;

    const params = {
      schema: data.schema,
      table: data.table,
    };
    
    async function dbQuery(id) {
      const myParams = Object.assign({id}, params);
      if (consumer.conf.debug)
        console.debug('SQL:'.blue, query, myParams);
      if (!consumer.conf.testMode)
        await consumer.db.query(query, myParams);
    }

    if (data.eventName === 'updaterows') {
      const keyChanged = data.cols.indexOf(key) !== -1;
      for (const row of data.rows) {
        if (keyChanged)
          await dbQuery(row.before[key]);
        await dbQuery(row.after[key]);
      }
    } else
      for (const row of data.rows)
        await dbQuery(row[key]);

    await this.channel.ack(msg);
  }
}