"""Invoice intake bot: picks up scanned invoices and extracts their fields with an LLM.
Start it with:  python -m bot"""
import time
from pathlib import Path

INBOX = Path(__file__).with_name("inbox")


def say(line):
    print(line, flush=True)
    time.sleep(0.2)


def main():
    say("[step 1] Initializing")
    docs = sorted(INBOX.glob("*.pdf"))
    say(f"[inbox] {len(docs)} invoices waiting")
    say("[step 2] Extracting fields")
    for i, doc in enumerate(docs, 1):
        try:
            from extractor import extract_invoice  # the LLM call
            rows = extract_invoice(doc.read_bytes(), "application/pdf")
            say(f"[extract] {doc.name}: {len(rows)} fields ({i}/{len(docs)})")
        except Exception as e:  # one bad document must not stop the batch
            say(f"ERROR: extraction failed for {doc.name}: {type(e).__name__}")
    say("[step 3] Queueing for review")
    say(f"[all done] {len(docs)} invoices processed")


if __name__ == "__main__":
    main()