Calculate the lead cost

export default {
  label: "Script label",
  description: 'Script description',

  * triggers ({ before }) {
    // This script myst be invoked before the record is created or updated (implicitly)
    yield before('create', 'update')
      // for a record
      .for('compose:record')
      // if the record belongs to the Lead module
      .where('module', 'Lead')
      // and the module belongs to the crm namespace -- this is the slug
      .where('namespace', 'crm')
  },

  // Refer to the low-code platform developer guide for details on these two parameters
  async exec ({ $record }, { Compose }) {
    if (!$record.values.LeadSource) {
      // This will use the original record, since no changes are required.
      // You could also use return false to stop the execution
      return $record
    }

    switch ($record.values.LeadSource) {
      case 'source-a':
        $record.values.LeadCost = 10
        break

      case 'source-b':
        $record.values.LeadCost = 20
        break

      default:
        $record.values.LeadCost = 30
        break
    }

    // Returning $record in a before script will automatically update the record.
    // IMPORTANT: This is not the same for after scripts -- they need to be explicitly updated.
    return $record
  }
}