"""OpenLibrary-Matching — Phase 5."""
import httpx
from .base import MatchResult

OL_BASE = "https://openlibrary.org"


async def search_open_library(title: str, author: str | None = None) -> list[MatchResult]:
    params: dict = {"title": title, "limit": 5}
    if author:
        params["author"] = author

    async with httpx.AsyncClient(timeout=10) as client:
        resp = await client.get(f"{OL_BASE}/search.json", params=params)
        resp.raise_for_status()
        data = resp.json()

    results = []
    for doc in data.get("docs", []):
        results.append(
            MatchResult(
                source="open_library",
                source_id=doc.get("key", ""),
                title=doc.get("title", title),
                author=doc.get("author_name", [None])[0] if doc.get("author_name") else None,
                publish_year=doc.get("first_publish_year"),
                confidence=0.6,
            )
        )
    return results