Send birthday wishes and payment links on each person's preferred app

import csv, io
from datetime import date
from clickruntime import on_trigger, credentials, http, state, log

CONTACTS_CSV = "https://example.com/contacts.csv"
WA = "https://graph.facebook.com/v20.0/your-phone-number-id/messages"

def wa_template(to, name, params):
    body = {"messaging_product": "whatsapp", "to": to, "type": "template", "template": {"name": name, "language": {"code": "en"},
            "components": [{"type": "body", "parameters": [{"type": "text", "text": str(p)} for p in params]}]}}
    return http.post(WA, headers={"Authorization": f"Bearer {credentials.secret('WHATSAPP_TOKEN')}"}, json=body).json()
TG = "https://api.telegram.org"

def tg(chat_id, text):
    http.post(f"{TG}/bot{credentials.secret('TELEGRAM_BOT_TOKEN')}/sendMessage", json={"chat_id": chat_id, "text": text})

@on_trigger
def run(event):
    today, sent = date.today(), 0
    for c in csv.DictReader(io.StringIO(http.get(CONTACTS_CSV).text)):
        birthday = c["birthday"][5:] == today.strftime("%m-%d")
        due = c.get("due_date") == today.isoformat()
        key = f"{today}:{c['name']}"
        if not (birthday or due) or state.get(key):
            continue
        text = f"Happy birthday, {c['name']}! 🎉" if birthday else f"Hi {c['name']}, a reminder that {c['amount']} is due today: {c['link']}"
        if c["channel"] == "telegram":
            tg(int(c["telegram_id"]), text)
        else:
            wa_template(c["phone"], "birthday" if birthday else "payment_due", [c["name"]] if birthday else [c["name"], c["amount"], c["link"]])
        state.set(key, True)
        log.info("sent", {"to": c["name"], "channel": c["channel"]})
        sent += 1
    return {"sent": sent}