# -*- coding: utf-8 -*-
# =============================================================================
# Nazev:   watch_new_emails_v1.0.py
# Verze:   1.0
# Datum:   2026-06-12
# Popis:   Background poller pro feasibility session. Sleduje kolekci
#          emaily."vbuzalka@its.jnj.com" v Mongo (192.168.1.76:27017) a ceka,
#          az pribude email novejsi nez baseline (nejnovejsi received_at pri
#          startu). Jakmile neco najde, vypise prehled novych emailu a SKONCI
#          (exit 0) -> background task tim re-invokuje Claude, ktery je vyhodnoti.
#          Polluje kazdych POLL_SECONDS. Po MAX_HOURS se ukonci (exit 0) i bez
#          nalezu, aby session nedrzel proces donekonecna.
# Pouziti: python watch_new_emails_v1.0.py
# =============================================================================
import sys
import time
from datetime import datetime, timedelta
from pymongo import MongoClient

MONGO_URI = "mongodb://192.168.1.76:27017"
DB = "emaily"
COLL = "vbuzalka@its.jnj.com"
FOLDER = "/vbuzalka@its.jnj.com/Inbox"
POLL_SECONDS = 120
MAX_HOURS = 12

def newest(col):
    doc = col.find_one({"jnj_folder": FOLDER}, sort=[("received_at", -1)],
                       projection={"received_at": 1})
    return doc["received_at"] if doc else None

def fmt(v):
    if isinstance(v, datetime):
        return v.strftime("%Y-%m-%d %H:%M:%S")
    return str(v)

def main():
    client = MongoClient(MONGO_URI, serverSelectionTimeoutMS=10000)
    col = client[DB][COLL]
    baseline = newest(col)
    print(f"[watch] start baseline received_at = {fmt(baseline)}", flush=True)
    deadline = datetime.now() + timedelta(hours=MAX_HOURS)

    while datetime.now() < deadline:
        time.sleep(POLL_SECONDS)
        try:
            cur = newest(col)
        except Exception as e:
            print(f"[watch] poll error: {e}", flush=True)
            continue
        if cur is not None and baseline is not None and cur > baseline:
            new_docs = list(col.find(
                {"jnj_folder": FOLDER, "received_at": {"$gt": baseline}},
                projection={"received_at": 1, "sender.email": 1, "subject": 1,
                            "attachments.filename": 1},
                sort=[("received_at", -1)]))
            print(f"\n=== NOVE EMAILY: {len(new_docs)} (po {fmt(baseline)}) ===", flush=True)
            for d in new_docs:
                snd = (d.get("sender") or {}).get("email", "")
                atts = [a.get("filename") for a in (d.get("attachments") or [])]
                print(f"- {fmt(d.get('received_at'))} | {snd} | {d.get('subject')}"
                      + (f" | prilohy: {atts}" if atts else ""), flush=True)
                print(f"  _id: {d.get('_id')}", flush=True)
            print("=== KONEC – task skoncil, vyhodnot v session ===", flush=True)
            return
    print("[watch] MAX_HOURS vyprselo bez noveho emailu – konec.", flush=True)

if __name__ == "__main__":
    main()