"""Brave Search (free-tier Data-for-Search API) — search only, 2,000 queries/month.

Config: ``web.search_backend`` / ``web.backend: "brave-free"`` (hyphen form kept for
existing user configs). Env: ``BRAVE_SEARCH_API_KEY``. Pair with Firecrawl/Tavily/Exa
for ``web_extract``.
"""

from __future__ import annotations

import logging
from typing import Any, Dict

from plugins.web._common import BaseWebSearchProvider, http_get_json, provider_env, search_fail, search_ok

logger = logging.getLogger(__name__)

_BRAVE_ENDPOINT = "https://api.search.brave.com/res/v1/web/search"


class BraveFreeWebSearchProvider(BaseWebSearchProvider):
    """Search-only Brave provider using the free-tier Data-for-Search API."""

    NAME = "brave-free"
    DISPLAY_NAME = "Brave Search (Free)"
    KEY_ENV = "BRAVE_SEARCH_API_KEY"

    def search(self, query: str, limit: int = 5) -> Dict[str, Any]:
        api_key = provider_env("BRAVE_SEARCH_API_KEY")
        if not api_key:
            return search_fail("BRAVE_SEARCH_API_KEY is not set")

        data, failure = http_get_json(
            "Brave Search",
            _BRAVE_ENDPOINT,
            params={"q": query, "count": max(1, min(int(limit), 20))},  # Brave caps count at 20
            headers={"X-Subscription-Token": api_key, "Accept": "application/json"},
            timeout=15,
            logger=logger,
        )
        if failure is not None:
            return failure

        raw_results = (data.get("web") or {}).get("results", []) or []
        web_results = [
            {
                "title": str(r.get("title", "")),
                "url": str(r.get("url", "")),
                "description": str(r.get("description", "")),
                "position": i + 1,
            }
            for i, r in enumerate(raw_results[:limit])
        ]
        logger.info(
            "Brave Search '%s': %d results (from %d raw, limit %d)",
            query, len(web_results), len(raw_results), limit,
        )
        return search_ok(web_results)

    def get_setup_schema(self) -> Dict[str, Any]:
        return {
            "name": "Brave Search (Free)",
            "badge": "free",
            "tag": "Free-tier API key — 2k queries/mo, search only.",
            "env_vars": [
                {
                    "key": "BRAVE_SEARCH_API_KEY",
                    "prompt": "Brave Search API key (free tier)",
                    "url": "https://brave.com/search/api/",
                },
            ],
        }