Get a weekly incident report by service

from collections import defaultdict
from datetime import datetime, timedelta, timezone
from clickruntime import on_trigger, credentials, http, notify

PD = "https://api.pagerduty.com"

def pd(path, **params):
    resp = http.get(f"{PD}{path}", params=params, headers={"Authorization": f"Token token={credentials.secret('PAGERDUTY_API_KEY')}",
                    "Accept": "application/json"})
    resp.raise_for_status()
    return resp.json()

def ts(s):
    return datetime.fromisoformat(s.replace("Z", "+00:00"))

@on_trigger
def run(event):
    until = datetime.now(timezone.utc)
    incidents = pd("/incidents", since=(until - timedelta(days=7)).isoformat(), until=until.isoformat(), limit=100)["incidents"]
    by_service = defaultdict(list)
    for i in incidents:
        by_service[i["service"]["summary"]].append(i)
    lines = []
    for service, items in sorted(by_service.items(), key=lambda kv: -len(kv[1])):
        resolved = [(ts(i["resolved_at"]) - ts(i["created_at"])).total_seconds() / 60 for i in items if i.get("resolved_at")]
        mttr = f"{sum(resolved) / len(resolved):.0f} min" if resolved else "n/a"
        lines.append(f"{service}: {len(items)} incidents, MTTR {mttr}")
    notify.email_me(f"PagerDuty last week: {len(incidents)} incidents", "\n".join(lines))
    return {"incidents": len(incidents)}