"""
HackerNews -- open Firebase API + Algolia search, no key.
"""
import httpx

FIREBASE_BASE = "https://hacker-news.firebaseio.com/v0"
ALGOLIA_BASE = "https://hn.algolia.com/api/v1/search"


def run(params: dict) -> dict:
    mode = params.get("mode", "top")
    limit = int(params.get("limit", 30))

    if mode == "search":
        query = params.get("query")
        if not query:
            raise ValueError("query is required for mode='search'")
        min_points = int(params.get("min_points", 50))
        resp = httpx.get(
            ALGOLIA_BASE,
            params={"query": query, "tags": "story", "numericFilters": f"points>{min_points}"},
            timeout=15.0,
        )
        resp.raise_for_status()
        hits = resp.json().get("hits", [])[:limit]
        results = [
            {
                "title": h.get("title"),
                "score": h.get("points"),
                "comments": h.get("num_comments"),
                "date": h.get("created_at"),
                "url": h.get("url") or f"https://news.ycombinator.com/item?id={h.get('objectID')}",
            }
            for h in hits
        ]
        return {"mode": "search", "count": len(results), "results": results}

    # top stories snapshot
    resp = httpx.get(f"{FIREBASE_BASE}/topstories.json", timeout=15.0)
    resp.raise_for_status()
    ids = resp.json()[:limit]

    results = []
    for story_id in ids:
        item_resp = httpx.get(f"{FIREBASE_BASE}/item/{story_id}.json", timeout=10.0)
        if item_resp.status_code != 200:
            continue
        item = item_resp.json()
        results.append(
            {
                "title": item.get("title"),
                "score": item.get("score"),
                "comments": item.get("descendants"),
                "author": item.get("by"),
                "url": item.get("url") or f"https://news.ycombinator.com/item?id={story_id}",
            }
        )
    return {"mode": "top", "count": len(results), "results": results}