export async function main(

  transaction_type: "insert" | "update" | "delete",

  schema_name: string,

  table_name: string,

  row: any,

  old_row?: any

) {

  console.log(`[Main] Transaction: ${transaction_type.toUpperCase()} on ${schema_name}.${table_name}`);

  console.log("[Main] New row data:", row);

  if (old_row) {

    console.log("[Main] Old row data (update/delete):", old_row);

  }

  // Example: specific action for "insert" on "users" table

  if (transaction_type === "insert" && table_name === "users" && row?.email) {

    console.log(`[Main] New user created: ${row.email}`);

    // sendWelcomeEmail(row.email);

  }

  // Example: log user email change

  if (transaction_type === "update" && table_name === "users" && old_row?.email !== row?.email) {

    console.log(`[Main] User updated email from ${old_row.email} to ${row.email}`);

    // notifyEmailChange(row.id);

  }

}