"""
SBIR/STTR Award Search

Uses the SBIR.gov API to search for Small Business Innovation Research
and Small Business Technology Transfer awards.

API Documentation: https://www.sbir.gov/api
Free, no API key required.
"""

import logging
import requests
from typing import List, Optional, Dict, Any
from datetime import datetime

from ..search.base import BaseSearcher, SearchResult

logger = logging.getLogger(__name__)


class SBIRSearcher(BaseSearcher):
    """
    Search SBIR/STTR awards database.

    The SBIR program funds R&D at small businesses, making it
    excellent for finding emerging defense technologies.
    """

    BASE_URL = "https://www.sbir.gov/api/awards.json"

    def __init__(self, timeout: int = 30):
        self.timeout = timeout

    @property
    def name(self) -> str:
        return "SBIR.gov"

    @property
    def source_type(self) -> str:
        return "sbir"

    def search(
        self,
        query: str,
        max_results: int = 20,
        agency: Optional[str] = None,
        year_start: Optional[int] = None,
        year_end: Optional[int] = None,
        phase: Optional[str] = None  # "Phase I", "Phase II", "Phase III"
    ) -> List[SearchResult]:
        """
        Search SBIR/STTR awards.

        Args:
            query: Keyword search
            max_results: Maximum results to return
            agency: Filter by agency (e.g., "DOD", "NASA", "DOE")
            year_start: Start year filter
            year_end: End year filter
            phase: Filter by phase

        Returns:
            List of SearchResult objects
        """
        params = {
            "keyword": query,
            "rows": min(max_results, 100),  # API limit
        }

        if agency:
            params["agency"] = agency
        if year_start:
            params["year_start"] = year_start
        if year_end:
            params["year_end"] = year_end
        if phase:
            params["phase"] = phase

        results = []

        try:
            response = requests.get(
                self.BASE_URL,
                params=params,
                timeout=self.timeout
            )
            response.raise_for_status()
            data = response.json()

            for rank, award in enumerate(data, 1):
                if rank > max_results:
                    break

                # Estimate TRL based on phase
                trl_estimate = self._estimate_trl(award.get("phase", ""))

                # Build URL to award page
                award_id = award.get("award_id", "")
                url = f"https://www.sbir.gov/sbirsearch/detail/{award_id}" if award_id else ""

                results.append(SearchResult(
                    title=award.get("award_title", ""),
                    url=url,
                    snippet=award.get("abstract", "")[:500] if award.get("abstract") else "",
                    source=self.name,
                    source_type=self.source_type,
                    rank=rank,
                    published_date=award.get("award_year"),
                    organization=award.get("firm", ""),
                    award_amount=self._parse_amount(award.get("award_amount")),
                    trl_estimate=trl_estimate,
                    award_id=award_id,
                    raw_data=award
                ))

            logger.info(f"SBIR search for '{query}' returned {len(results)} results")

        except requests.exceptions.RequestException as e:
            logger.error(f"SBIR API request failed: {e}")
        except Exception as e:
            logger.error(f"SBIR search error: {e}")

        return results

    def _estimate_trl(self, phase: str) -> int:
        """Estimate TRL based on SBIR phase."""
        phase = phase.lower()
        if "phase i" in phase and "ii" not in phase:
            return 3  # Proof of concept
        elif "phase ii" in phase and "iii" not in phase:
            return 5  # Prototype development
        elif "phase iii" in phase:
            return 7  # Production ready
        return 4  # Default mid-range

    def _parse_amount(self, amount) -> Optional[float]:
        """Parse award amount to float."""
        if amount is None:
            return None
        try:
            if isinstance(amount, str):
                amount = amount.replace("$", "").replace(",", "")
            return float(amount)
        except (ValueError, TypeError):
            return None

    def search_defense(self, query: str, max_results: int = 20) -> List[SearchResult]:
        """Search specifically DOD SBIR awards."""
        return self.search(query, max_results=max_results, agency="DOD")

    def search_space(self, query: str, max_results: int = 20) -> List[SearchResult]:
        """Search NASA and Space Force SBIR awards."""
        # Search NASA
        nasa_results = self.search(query, max_results=max_results // 2, agency="NASA")
        # Search DOD (includes Space Force)
        dod_results = self.search(
            f"{query} space OR satellite OR orbital",
            max_results=max_results // 2,
            agency="DOD"
        )
        return nasa_results + dod_results

    def get_award_details(self, award_id: str) -> Optional[Dict[str, Any]]:
        """Get detailed information about a specific award."""
        try:
            response = requests.get(
                self.BASE_URL,
                params={"award_id": award_id},
                timeout=self.timeout
            )
            response.raise_for_status()
            data = response.json()
            return data[0] if data else None
        except Exception as e:
            logger.error(f"Failed to get award details: {e}")
            return None