"""
Webhook Action für Alerts Agent.

Sendet HTTP-Webhooks für Alerts.
"""
import logging
from typing import Dict, Any, List
import httpx

from .base import ActionHandler, ActionResult, ActionType, AlertContext

logger = logging.getLogger(__name__)


class WebhookAction(ActionHandler):
    """
    Webhook-Benachrichtigungen für Alerts.

    Konfiguration:
    - url: Webhook-URL
    - method: HTTP-Methode (default: POST)
    - headers: Zusätzliche Headers
    - include_full_context: Vollen Alert-Kontext senden (default: true)
    """

    @property
    def action_type(self) -> ActionType:
        return ActionType.WEBHOOK

    def get_required_config_fields(self) -> List[str]:
        return ["url"]

    def validate_config(self, config: Dict[str, Any]) -> bool:
        url = config.get("url", "")
        return url.startswith("http://") or url.startswith("https://")

    async def execute(
        self,
        context: AlertContext,
        config: Dict[str, Any],
    ) -> ActionResult:
        """
        Sendet einen Webhook.

        Args:
            context: Alert-Kontext
            config: Webhook-Konfiguration (url, method, headers)

        Returns:
            ActionResult
        """
        try:
            url = config.get("url")
            method = config.get("method", "POST").upper()
            headers = config.get("headers", {})
            timeout = config.get("timeout", 30)

            # Payload erstellen
            payload = self._build_payload(context, config)

            # Standard-Headers
            headers.setdefault("Content-Type", "application/json")
            headers.setdefault("User-Agent", "BreakPilot-AlertsAgent/1.0")

            # Request senden
            async with httpx.AsyncClient(timeout=timeout) as client:
                if method == "POST":
                    response = await client.post(url, json=payload, headers=headers)
                elif method == "PUT":
                    response = await client.put(url, json=payload, headers=headers)
                else:
                    response = await client.get(url, params=payload, headers=headers)

            # Erfolg prüfen
            success = 200 <= response.status_code < 300

            return ActionResult(
                success=success,
                action_type=self.action_type,
                message=f"Webhook {method} {url} - Status {response.status_code}",
                details={
                    "url": url,
                    "method": method,
                    "status_code": response.status_code,
                    "response_length": len(response.text),
                },
                error=None if success else f"HTTP {response.status_code}",
            )

        except httpx.TimeoutException:
            logger.error(f"Webhook timeout: {config.get('url')}")
            return ActionResult(
                success=False,
                action_type=self.action_type,
                message="Webhook Timeout",
                error="Request timed out",
            )

        except Exception as e:
            logger.error(f"Webhook error: {e}")
            return ActionResult(
                success=False,
                action_type=self.action_type,
                message="Webhook-Fehler",
                error=str(e),
            )

    def _build_payload(
        self,
        context: AlertContext,
        config: Dict[str, Any],
    ) -> Dict[str, Any]:
        """Erstellt den Webhook-Payload."""

        if config.get("include_full_context", True):
            # Voller Kontext
            return {
                "event": "alert.matched",
                "alert": context.to_dict(),
                "timestamp": self._get_timestamp(),
            }
        else:
            # Minimal-Payload
            return {
                "event": "alert.matched",
                "alert_id": context.alert_id,
                "title": context.title,
                "url": context.url,
                "timestamp": self._get_timestamp(),
            }

    def _get_timestamp(self) -> str:
        """Gibt aktuellen ISO-Timestamp zurück."""
        from datetime import datetime
        return datetime.utcnow().isoformat() + "Z"