#!/usr/bin/env python3
"""Dry-run harness: exercises the full pos_briefing pipeline WITHOUT printing.

Monkeypatches print_receipt so nothing is sent to the TM-m30 over TCP. Reports
which data sources succeeded/failed and the receipt byte length. Use to verify
the script runs end-to-end on a host before scheduling it via cron.
"""
import os
import sys

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import pos_briefing as pb


def fake_print_receipt(raw):
    print(f"[dry-run] print_receipt() suppressed — {len(raw)} bytes would be sent "
          f"to {pb.PRINTER_IP}:{pb.PRINTER_PORT}")
    return True


pb.print_receipt = fake_print_receipt


def probe(name, fn):
    try:
        v = fn()
        ok = v is not None and v != [] and v != {}
        print(f"  {'OK ' if ok else 'NIL'} {name}: {repr(v)[:120]}")
        return v
    except Exception as e:
        print(f"  ERR {name}: {type(e).__name__}: {e}")
        return None


print("=== data source probes ===")
items, token = (pb.fetch_news() if True else (None, None))
print(f"  news: {len(items) if items else 0} items, token={'yes' if token else 'no'}")
zfs = probe("zfs", pb.get_zfs_status)
reddit = probe("reddit", pb.get_reddit_top)
grafana = probe("grafana", pb.get_grafana_metrics)
weather = probe("weather", pb.get_weather)
finance = probe("finance", pb.get_financial_snapshot)

print("=== build + (suppressed) print ===")
articles = pb.summarize_news(items, count=5, length="30-50 words") if items else []
print(f"  articles summarized: {len(articles)}")
raw = pb.build_receipt(articles, zfs, reddit, grafana, weather, finance)
pb.print_receipt(raw)
print("=== done (nothing printed) ===")