"""News API adapter - fetches company-linked headlines and article metadata."""
import hashlib
import logging
from datetime import datetime
from typing import Any, Dict

import httpx

from .base import AdapterResult, BaseAdapter

logger = logging.getLogger("news_adapter")


class NewsApiAdapter(BaseAdapter):
    """Concrete adapter for a news API provider."""

    def __init__(self, api_key: str = "", base_url: str = ""):
        self.api_key = api_key
        self.base_url = base_url

    def source_type(self) -> str:
        return "news_api"

    async def fetch(self, ticker: str, config: Dict[str, Any]) -> AdapterResult:
        endpoint = config.get("endpoint", "/v2/everything")
        url = f"{self.base_url}{endpoint}"
        params = config.get("params", {})
        params.setdefault("q", ticker)
        params.setdefault("sortBy", "publishedAt")
        params.setdefault("pageSize", 20)
        if self.api_key:
            params["apiKey"] = self.api_key

        async with httpx.AsyncClient(timeout=30) as client:
            try:
                resp = await client.get(url, params=params)
                resp.raise_for_status()
                raw = resp.content
                data = resp.json()
                content_hash = hashlib.sha256(raw).hexdigest()

                articles = data.get("articles", [])
                return AdapterResult(
                    source_type="news_api",
                    ticker=ticker,
                    items=articles,
                    raw_payload=raw,
                    content_hash=content_hash,
                    fetched_at=datetime.utcnow(),
                )
            except Exception as e:
                logger.error(f"News fetch failed for {ticker}: {e}")
                return AdapterResult(
                    source_type="news_api",
                    ticker=ticker,
                    items=[],
                    raw_payload=b"",
                    content_hash="",
                    fetched_at=datetime.utcnow(),
                    error=str(e),
                )