Get a daily list of failed Resend emails

from collections import defaultdict
from clickruntime import on_event, on_trigger, notify, state

TYPES = {"email.bounced": "Bounced", "email.failed": "Failed", "email.complained": "Spam complaints"}

@on_event
def remember(event):
    body = event.json or {}
    if body.get("type") not in TYPES:
        return {"skipped": body.get("type")}
    data = body["data"]
    pending = state.get("pending") or []
    pending.append({"type": body["type"], "to": ", ".join(data.get("to", [])), "subject": data.get("subject", "")})
    state.set("pending", pending[-500:])
    return {"stored": len(pending)}

@on_trigger
def send_digest(event):
    pending = state.get("pending") or []
    if not pending:
        return {"sent": False}
    groups = defaultdict(list)
    for p in pending:
        groups[TYPES[p["type"]]].append(f"  {p['to']}: {p['subject']}")
    text = "\n\n".join(f"{name} ({len(rows)})\n" + "\n".join(rows) for name, rows in groups.items())
    notify.email_me(f"Resend: {len(pending)} delivery problems today", text)
    state.set("pending", [])
    return {"sent": True, "count": len(pending)}