Parse and Match Payment Invoices

You are given two kinds of payment-related text records (e.g., invoices and payments/events). Each record is a string containing multiple fields. You need to: Parse each record into structured fields (e.g., id, customer, amount, currency, timestamp, status, etc.). Match payments/events to the correct invoices according to the specified rules (e.g., by invoice id or other derived keys). Output the final settlement result per invoice (e.g., paid/unpaid, total paid amount, unmatched payments, or updated invoice status). Note: The post does not include the exact I/O format, field definitions, or tie-breaking rules; follow the specification provided in the interview.