"""
SBA API client for fetching player and team data.

Integrates with SBA REST API to retrieve player and team information
for use in game lineup display and game creation.

Author: Claude
Date: 2025-01-10
"""

import logging
from typing import Any

import httpx
import pendulum

from app.config import get_settings
from app.models.player_models import SbaPlayer

logger = logging.getLogger(f"{__name__}.SbaApiClient")
settings = get_settings()

# Module-level team cache (team_id -> team_data)
_team_cache: dict[int, dict[str, Any]] = {}
_team_cache_expiry: pendulum.DateTime | None = None
_CACHE_TTL_HOURS = 1


class SbaApiClient:
    """Client for SBA API player and team data lookups."""

    def __init__(
        self,
        base_url: str = "https://api.sba.manticorum.com",
        api_key: str | None = None,
    ):
        """
        Initialize SBA API client.

        Args:
            base_url: Base URL for SBA API (default: production)
            api_key: Bearer token for API authentication
        """
        self.base_url = base_url
        self.api_key = api_key or settings.sba_api_key
        self.timeout = httpx.Timeout(10.0, connect=5.0)

    def _get_headers(self) -> dict[str, str]:
        """Get headers with auth token."""
        headers = {}
        if self.api_key:
            headers["Authorization"] = f"Bearer {self.api_key}"
        return headers

    async def get_teams(self, season: int, active_only: bool = True) -> list[dict[str, Any]]:
        """
        Fetch teams from SBA API for a specific season.

        Args:
            season: Season number (e.g., 3 for Season 3)
            active_only: If True, filter out IL teams and teams without divisions

        Returns:
            List of team dictionaries with id, name, abbreviation, etc.

        Example:
            teams = await client.get_teams(season=3)
            for team in teams:
                print(f"{team['abbrev']}: {team['lname']}")
        """
        url = f"{self.base_url}/teams"
        params = {"season": season}

        try:
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(
                    url, headers=self._get_headers(), params=params
                )
                response.raise_for_status()

                data = response.json()
                teams = data.get("teams", [])

                if active_only:
                    # Filter out injured list teams (IL suffix) and teams without divisions
                    teams = [
                        t for t in teams
                        if not t["abbrev"].endswith("IL") and t.get("division")
                    ]

                logger.info(f"Loaded {len(teams)} teams for season {season}")
                return teams

        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch teams: {e}")
            raise
        except Exception as e:
            logger.error(f"Unexpected error fetching teams: {e}")
            raise

    async def get_teams_by_owner(self, discord_id: str, season: int) -> list[dict[str, Any]]:
        """
        Fetch teams owned by a specific Discord user.

        Args:
            discord_id: Discord user ID (gmid or gmid2)
            season: Season number

        Returns:
            List of team dictionaries owned by this user

        Example:
            teams = await client.get_teams_by_owner("485217045408120833", season=13)
        """
        url = f"{self.base_url}/teams"
        params = {"season": season, "owner_id": discord_id}

        try:
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(
                    url, headers=self._get_headers(), params=params
                )
                response.raise_for_status()

                data = response.json()
                teams = data.get("teams", [])

                logger.info(f"Found {len(teams)} teams for owner {discord_id[:8]}...")
                return teams

        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch teams for owner {discord_id[:8]}...: {e}")
            raise
        except Exception as e:
            logger.error(f"Unexpected error fetching teams by owner: {e}")
            raise

    async def get_team_by_id(self, team_id: int, season: int = 3) -> dict[str, Any] | None:
        """
        Get a single team by ID, using cache when available.

        Args:
            team_id: Team ID to look up
            season: Season number (default: 3)

        Returns:
            Team dictionary with id, lname, abbrev, etc. or None if not found

        Example:
            team = await client.get_team_by_id(35)
            print(team['lname'])  # "Cardinals"
        """
        global _team_cache, _team_cache_expiry

        now = pendulum.now("UTC")

        # Check if cache is valid
        if _team_cache_expiry is None or now > _team_cache_expiry:
            # Refresh cache
            try:
                teams = await self.get_teams(season=season, active_only=False)
                _team_cache = {t["id"]: t for t in teams}
                _team_cache_expiry = now.add(hours=_CACHE_TTL_HOURS)
                logger.info(f"Refreshed team cache with {len(_team_cache)} teams")
            except Exception as e:
                logger.warning(f"Failed to refresh team cache: {e}")
                # Continue with stale cache if available

        return _team_cache.get(team_id)

    async def get_teams_by_ids(self, team_ids: list[int], season: int = 3) -> dict[int, dict[str, Any]]:
        """
        Get multiple teams by ID, using cache.

        Args:
            team_ids: List of team IDs to look up
            season: Season number (default: 3)

        Returns:
            Dictionary mapping team_id to team data
        """
        result = {}
        for team_id in team_ids:
            team = await self.get_team_by_id(team_id, season)
            if team:
                result[team_id] = team
            else:
                logger.warning(f"Team {team_id} not found in cache for season {season}")

        # Log if we couldn't find all requested teams
        missing = [tid for tid in team_ids if tid not in result]
        if missing:
            logger.warning(
                f"get_teams_by_ids: {len(missing)}/{len(team_ids)} teams not found: {missing}"
            )

        return result

    async def get_player(self, player_id: int) -> SbaPlayer:
        """
        Fetch player data from SBA API.

        Args:
            player_id: SBA player ID

        Returns:
            SbaPlayer instance with all player data

        Raises:
            httpx.HTTPError: If API request fails

        Example:
            player = await client.get_player(12288)
            print(f"Name: {player.name}")  # "Ronald Acuna Jr"
            print(f"Positions: {player.get_positions()}")  # ['RF']
        """
        url = f"{self.base_url}/players/{player_id}"

        try:
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(url, headers=self._get_headers())
                response.raise_for_status()

                data = response.json()
                player = SbaPlayer.from_api_response(data)

                logger.info(f"Loaded player {player_id}: {player.name}")
                return player

        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch player {player_id}: {e}")
            raise
        except Exception as e:
            logger.error(f"Unexpected error fetching player {player_id}: {e}")
            raise

    async def get_roster(self, team_id: int, season: int) -> list[dict[str, Any]]:
        """
        Fetch roster for a specific team from SBA API.

        Args:
            team_id: Team ID
            season: Season number (e.g., 3 for Season 3)

        Returns:
            List of player dictionaries from the SBA API

        Example:
            roster = await client.get_roster(team_id=35, season=3)
            for player in roster:
                print(f"{player['name']}: {player['position']}")
        """
        url = f"{self.base_url}/players"
        params = {"season": season, "team_id": team_id}

        try:
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(
                    url, headers=self._get_headers(), params=params
                )
                response.raise_for_status()

                data = response.json()
                players = data.get("players", [])
                count = data.get("count", len(players))

                logger.info(f"Loaded {count} players for team {team_id}, season {season}")
                return players

        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch roster for team {team_id}: {e}")
            raise
        except Exception as e:
            logger.error(f"Unexpected error fetching roster: {e}")
            raise

    async def get_players_batch(self, player_ids: list[int]) -> dict[int, SbaPlayer]:
        """
        Fetch multiple players in parallel.

        Args:
            player_ids: List of SBA player IDs to fetch

        Returns:
            Dictionary mapping player_id to SbaPlayer instance
            Players that fail to load will be omitted from the result

        Example:
            players = await client.get_players_batch([12288, 12289, 12290])
            for player_id, player in players.items():
                print(f"{player.name}: {player.get_positions()}")
        """
        if not player_ids:
            return {}

        results: dict[int, SbaPlayer] = {}

        async with httpx.AsyncClient(timeout=self.timeout) as client:
            for player_id in player_ids:
                try:
                    url = f"{self.base_url}/players/{player_id}"
                    response = await client.get(url)
                    response.raise_for_status()

                    data = response.json()
                    player = SbaPlayer.from_api_response(data)
                    results[player_id] = player

                except httpx.HTTPError as e:
                    logger.warning(f"Failed to fetch player {player_id}: {e}")
                    # Continue with other players
                except Exception as e:
                    logger.warning(f"Unexpected error fetching player {player_id}: {e}")
                    # Continue with other players

        logger.info(f"Loaded {len(results)}/{len(player_ids)} players")
        return results

    async def get_current(self) -> dict[str, Any]:
        """
        Get current season and week from SBA API.

        Returns:
            Dictionary with 'season' and 'week' keys

        Example:
            current = await client.get_current()
            print(f"Season {current['season']}, Week {current['week']}")
        """
        url = f"{self.base_url}/current"

        try:
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(url, headers=self._get_headers())
                response.raise_for_status()

                data = response.json()
                logger.info(f"Current: Season {data.get('season')}, Week {data.get('week')}")
                return data

        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch current season/week: {e}")
            raise
        except Exception as e:
            logger.error(f"Unexpected error fetching current: {e}")
            raise

    async def get_schedule_games(
        self, season: int, week_start: int, week_end: int
    ) -> list[dict[str, Any]]:
        """
        Get scheduled games for a week range from SBA API.

        Args:
            season: Season number (e.g., 13)
            week_start: Starting week number
            week_end: Ending week number (inclusive)

        Returns:
            List of game dictionaries with team info

        Example:
            games = await client.get_schedule_games(season=13, week_start=12, week_end=12)
            for game in games:
                print(f"{game['away_abbrev']} @ {game['home_abbrev']}")
        """
        url = f"{self.base_url}/games"
        params = {"season": season, "week_start": week_start, "week_end": week_end}

        try:
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(
                    url, headers=self._get_headers(), params=params
                )
                response.raise_for_status()

                data = response.json()
                games = data.get("games", data) if isinstance(data, dict) else data

                logger.info(
                    f"Loaded {len(games)} scheduled games for S{season} W{week_start}-{week_end}"
                )
                return games

        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch schedule games: {e}")
            raise
        except Exception as e:
            logger.error(f"Unexpected error fetching schedule games: {e}")
            raise


# Singleton instance
sba_api_client = SbaApiClient()