wehub-resource-sync
255 lines
8.8 KiB
Python
255 lines
8.8 KiB
Python
from __future__ import annotations
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import base64
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import datetime
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import hashlib
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import logging
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import random
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from dataclasses import dataclass
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from typing import Protocol
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from urllib.parse import urlencode
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from zoneinfo import ZoneInfo
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import aiohttp
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from livekit.agents.utils import http_context
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class SlotUnavailableError(Exception):
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def __init__(self, message: str) -> None:
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super().__init__(message)
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@dataclass
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class AvailableSlot:
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start_time: datetime.datetime
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duration_min: int
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@property
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def unique_hash(self) -> str:
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# unique id based on the start_time & duration_min
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raw = f"{self.start_time.isoformat()}|{self.duration_min}".encode()
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digest = hashlib.blake2s(raw, digest_size=5).digest()
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return f"ST_{base64.b32encode(digest).decode().rstrip('=').lower()}"
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@dataclass
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class BookedAppointment:
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slot: AvailableSlot
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attendee_email: str
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class Calendar(Protocol):
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# The bookings made this session. The calendar is the single system of
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# record, so callers never keep a parallel list that could drift.
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scheduled_appointments: list[BookedAppointment]
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def now(self) -> datetime.datetime:
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"""The calendar's current time (tz-aware). Wall-clock in production;
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a fixed value under simulation so scenario dates stay deterministic."""
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...
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async def initialize(self) -> None: ...
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async def schedule_appointment(
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self,
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*,
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start_time: datetime.datetime,
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attendee_email: str,
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) -> None: ...
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async def list_available_slots(
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self, *, start_time: datetime.datetime, end_time: datetime.datetime
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) -> list[AvailableSlot]: ...
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class FakeCalendar(Calendar):
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def __init__(
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self,
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*,
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timezone: str,
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slots: list[AvailableSlot] | None = None,
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seed: int | None = None,
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now: datetime.datetime | None = None,
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) -> None:
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self.tz = ZoneInfo(timezone)
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# A fixed clock keeps simulation scenarios deterministic; None means
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# follow the wall clock.
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self._now = now
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self._slots: list[AvailableSlot] = []
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self.scheduled_appointments: list[BookedAppointment] = []
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if slots is not None:
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self._slots.extend(slots)
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return
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rng = random.Random(seed)
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today = self.now().date()
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for day_offset in range(1, 90): # generate slots for the next 90 days
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current_day = today + datetime.timedelta(days=day_offset)
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if current_day.weekday() >= 5:
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continue
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# build all possible 30-min slots between 09:00 and 17:00
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day_start = datetime.datetime.combine(current_day, datetime.time(9, 0), tzinfo=self.tz)
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slots_in_day = [
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day_start + datetime.timedelta(minutes=30 * i)
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for i in range(int((17 - 9) * 2)) # (17-9)=8 hours => 16 slots
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]
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num_slots = rng.randint(3, 6)
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chosen = rng.sample(slots_in_day, num_slots)
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for slot_start in sorted(chosen):
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self._slots.append(AvailableSlot(start_time=slot_start, duration_min=30))
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def now(self) -> datetime.datetime:
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if self._now is not None:
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return self._now.astimezone(self.tz)
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return datetime.datetime.now(self.tz)
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async def initialize(self) -> None:
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pass
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async def schedule_appointment(
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self, *, start_time: datetime.datetime, attendee_email: str
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) -> None:
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slot = next((s for s in self._slots if s.start_time == start_time), None)
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if slot is None:
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raise SlotUnavailableError(f"no available slot at {start_time.isoformat()}")
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self._slots.remove(slot)
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self.scheduled_appointments.append(
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BookedAppointment(slot=slot, attendee_email=attendee_email)
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)
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async def list_available_slots(
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self, *, start_time: datetime.datetime, end_time: datetime.datetime
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) -> list[AvailableSlot]:
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return [slot for slot in self._slots if start_time <= slot.start_time < end_time]
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# --- cal.com impl ---
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CAL_COM_EVENT_TYPE = "livekit-front-desk"
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EVENT_DURATION_MIN = 30
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BASE_URL = "https://api.cal.com/v2/"
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class CalComCalendar(Calendar):
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def __init__(self, *, api_key: str, timezone: str) -> None:
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self.tz = ZoneInfo(timezone)
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self._api_key = api_key
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self.scheduled_appointments: list[BookedAppointment] = []
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try:
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self._http_session = http_context.http_session()
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except RuntimeError:
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self._http_session = aiohttp.ClientSession()
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self._logger = logging.getLogger("cal.com")
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def now(self) -> datetime.datetime:
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return datetime.datetime.now(self.tz)
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async def initialize(self) -> None:
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async with self._http_session.get(
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headers=self._build_headers(api_version="2024-06-14"), url=f"{BASE_URL}me/"
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) as resp:
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resp.raise_for_status()
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username = (await resp.json())["data"]["username"]
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self._logger.info(f"using cal.com username: {username}")
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query = urlencode({"username": username})
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async with self._http_session.get(
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headers=self._build_headers(api_version="2024-06-14"),
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url=f"{BASE_URL}event-types/?{query}",
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) as resp:
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resp.raise_for_status()
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data = (await resp.json())["data"]
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lk_event_type = next(
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(event for event in data if event.get("slug") == CAL_COM_EVENT_TYPE), None
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)
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if lk_event_type:
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self._lk_event_id = lk_event_type["id"]
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else:
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async with self._http_session.post(
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headers=self._build_headers(api_version="2024-06-14"),
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url=f"{BASE_URL}event-types",
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json={
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"lengthInMinutes": EVENT_DURATION_MIN,
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"title": "LiveKit Front-Desk",
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"slug": CAL_COM_EVENT_TYPE,
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},
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) as resp:
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resp.raise_for_status()
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self._logger.info(f"successfully added {CAL_COM_EVENT_TYPE} event type")
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data = (await resp.json())["data"]
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self._lk_event_id = data["id"]
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self._logger.info(f"event type id: {self._lk_event_id}")
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async def schedule_appointment(
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self, *, start_time: datetime.datetime, attendee_email: str
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) -> None:
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slot = AvailableSlot(start_time=start_time, duration_min=EVENT_DURATION_MIN)
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start_time = start_time.astimezone(datetime.timezone.utc)
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async with self._http_session.post(
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headers=self._build_headers(api_version="2024-08-13"),
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url=f"{BASE_URL}bookings",
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json={
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"start": start_time.isoformat(),
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"attendee": {
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"name": attendee_email, # TODO(theomonnom): add name prompt
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"email": attendee_email,
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"timeZone": self.tz.tzname(None),
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},
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"eventTypeId": self._lk_event_id,
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},
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) as resp:
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data = await resp.json()
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if error := data.get("error"):
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message = error["message"]
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if "User either already has booking at this time or is not available" in message:
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raise SlotUnavailableError(error["message"])
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resp.raise_for_status()
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self.scheduled_appointments.append(
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BookedAppointment(slot=slot, attendee_email=attendee_email)
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)
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async def list_available_slots(
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self, *, start_time: datetime.datetime, end_time: datetime.datetime
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) -> list[AvailableSlot]:
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start_time = start_time.astimezone(datetime.timezone.utc)
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end_time = end_time.astimezone(datetime.timezone.utc)
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query = urlencode(
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{
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"eventTypeId": self._lk_event_id,
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"start": start_time.isoformat(),
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"end": end_time.isoformat(),
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}
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)
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async with self._http_session.get(
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headers=self._build_headers(api_version="2024-09-04"), url=f"{BASE_URL}slots/?{query}"
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) as resp:
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resp.raise_for_status()
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raw_data = (await resp.json())["data"]
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available_slots = []
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for _, slots in raw_data.items():
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for slot in slots:
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start_dt = datetime.datetime.fromisoformat(slot["start"].replace("Z", "+00:00"))
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available_slots.append(
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AvailableSlot(start_time=start_dt, duration_min=EVENT_DURATION_MIN)
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)
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return available_slots
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def _build_headers(self, *, api_version: str | None = None) -> dict[str, str]:
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h = {"Authorization": f"Bearer {self._api_key}"}
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if api_version:
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h["cal-api-version"] = api_version
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return h
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