from __future__ import annotations

import httpx

from ...redaction import redact_dict
from ...timeutil import payload_with_display_times
from .base import DeliveryResult
from .http import classify_response


class WebhookNotifier:
    name = "webhook"

    def __init__(
        self, client: httpx.AsyncClient, url: str, token: str = "", time_zone: str = "UTC"
    ) -> None:
        self._client = client
        self._url = url
        self._token = token
        self._time_zone = time_zone

    async def deliver(self, event_type: str, payload: dict) -> DeliveryResult:
        headers = {"Content-Type": "application/json"}
        if self._token:
            headers["Authorization"] = f"Bearer {self._token}"
        body = {
            "event_type": event_type,
            "incident": redact_dict(payload_with_display_times(payload, self._time_zone)),
        }
        try:
            resp = await self._client.post(self._url, json=body, headers=headers)
        except httpx.HTTPError as exc:
            return DeliveryResult(ok=False, permanent=False, error=type(exc).__name__)
        ok, perm = classify_response(resp.status_code)
        if ok:
            return DeliveryResult(ok=True)
        return DeliveryResult(ok=False, permanent=perm, error=f"http_{resp.status_code}")