#!/usr/bin/env python3
"""Check shonuff@germainebrown.com inbox for new messages from unknown senders.

Silent if nothing new. Alerts if someone other than Germaine has emailed.
"""
import imaplib, email, os, json, hashlib
from datetime import datetime, timezone

HOST = "mail.germainebrown.com"
PORT = 993
USER = "shonuff@germainebrown.com"
PW = "Catches.bullets1985"
SEEN_FILE = "/root/.hermes/scripts/.shonuff-seen.json"
TRUSTED = ["g@germainebrown.com", "mailer-daemon@heracles.mxrouting.net"]

def load_seen():
    if os.path.exists(SEEN_FILE):
        return set(json.load(open(SEEN_FILE)))
    return set()

def save_seen(seen):
    json.dump(list(seen), open(SEEN_FILE, "w"))

def main():
    seen = load_seen()
    new_alerts = []

    try:
        conn = imaplib.IMAP4_SSL(HOST, PORT)
        conn.login(USER, PW)
        conn.select("INBOX")

        status, data = conn.search(None, "UNSEEN")
        if status != "OK" or not data[0]:
            conn.logout()
            save_seen(seen)
            return  # silent — nothing new

        for num in data[0].split():
            status, msg_data = conn.fetch(num, "(RFC822)")
            if status != "OK":
                continue
            raw = email.message_from_bytes(msg_data[0][1])
            sender = raw.get("From", "").strip()
            subj = raw.get("Subject", "(no subject)")
            msg_id = raw.get("Message-ID", str(num))

            # Skip trusted senders
            trusted = any(t.lower() in sender.lower() for t in TRUSTED)
            if trusted:
                continue

            # Skip if already reported
            h = hashlib.md5(msg_id.encode()).hexdigest()
            if h in seen:
                continue
            seen.add(h)

            new_alerts.append((sender, subj))

        conn.logout()
        save_seen(seen)

    except Exception as e:
        print(f"⚠️ Sho'Nuff inbox check failed: {e}")
        return

    if not new_alerts:
        return  # silent

    print(f"📬 Sho'Nuff received {len(new_alerts)} message(s) from unknown senders:\n")
    for sender, subj in new_alerts:
        print(f"  • From: {sender}")
        print(f"    Subject: {subj}")
        print()

if __name__ == "__main__":
    main()