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from typing import Any, Optional
from smolagents.tools import Tool
import os
import urllib
import json

class SpecStreamWebSearch(Tool):
    name = "specstream_web_search"
    description = "Searches the live web in seconds with the SpecStream Search API (GET /v1/web-search, $5 per 1,000 searches, no quote needed). Returns the answer with its source URL and read time, matching rows, ranked sources and optional page passages. Needs SPECSTREAM_API_KEY."
    inputs = {'q': {'type': 'string', 'description': 'The search question or request in everyday words (1 to 2,000 characters).'}, 'passages': {'type': 'boolean', 'description': 'Set True to include the main text passages of the top matching pages.', 'nullable': True}}
    output_type = "string"

    def forward(self, q: str, passages: bool | None = None) -> str:
        import json
        import os
        from urllib.error import HTTPError, URLError
        from urllib.parse import urlencode
        from urllib.request import Request, urlopen

        key = os.environ.get("SPECSTREAM_API_KEY", "").strip()
        if not key:
            return "Set SPECSTREAM_API_KEY to a SpecStream API key (https://specstream.ai/workspace?utm_source=smolagents)."
        query = (q or "").strip()
        if not query or len(query) > 2000:
            return "Provide a search query between 1 and 2,000 characters."
        base = os.environ.get("SPECSTREAM_API_BASE", "https://api.specstream.ai").rstrip("/")
        params = {"q": query}
        if passages:
            params["passages"] = "true"
        req = Request(
            base + "/v1/web-search?" + urlencode(params),
            method="GET",
            headers={
                "Authorization": "Bearer " + key,
                "Accept": "application/json",
                "User-Agent": "specstream-smolagents/0.2",
            },
        )
        try:
            with urlopen(req, timeout=60) as resp:
                payload = json.loads(resp.read().decode("utf-8"))
        except HTTPError as exc:
            return "SpecStream answered HTTP %d" % exc.code
        except (URLError, OSError):
            return "SpecStream could not be reached"
        data = payload.get("data") if isinstance(payload, dict) else {}
        return json.dumps(data, ensure_ascii=False)

    def __init__(self, *args, **kwargs):
        self.is_initialized = False