major-domo-v2/services/player_service.py

"""
Player service for Discord Bot v2.0

Handles player-related operations with team population and search functionality.
"""

import logging
from typing import Optional, List, TYPE_CHECKING

from config import get_config
from services.base_service import BaseService
from models.player import Player
from exceptions import APIException

if TYPE_CHECKING:
    from services.team_service import TeamService

logger = logging.getLogger(f"{__name__}.PlayerService")


class PlayerService(BaseService[Player]):
    """
    Service for player-related operations.

    Features:
    - Player retrieval with team population
    - Team roster queries
    - Name-based search with exact matching
    - Season-specific filtering
    - Free agent handling via constants
    """

    def __init__(self, team_service: Optional["TeamService"] = None):
        """Initialize player service."""
        super().__init__(Player, "players")
        self._team_service = team_service
        logger.debug("PlayerService initialized")

    async def get_player(self, player_id: int) -> Optional[Player]:
        """
        Get player by ID with error handling.

        Args:
            player_id: Unique player identifier

        Returns:
            Player instance or None if not found
        """
        try:
            return await self.get_by_id(player_id)
        except APIException:
            logger.error(f"Failed to get player {player_id}")
            return None
        except Exception as e:
            logger.error(f"Unexpected error getting player {player_id}: {e}")
            return None

    async def get_players_by_team(
        self, team_id: int, season: int, sort: Optional[str] = None
    ) -> List[Player]:
        """
        Get all players for a specific team.

        Args:
            team_id: Team identifier
            season: Season number (required)
            sort: Sort order - 'cost-asc', 'cost-desc', 'name-asc', 'name-desc' (optional)

        Returns:
            List of players on the team, optionally sorted
        """
        try:
            params = [("season", str(season)), ("team_id", str(team_id))]

            # Add sort parameter if specified
            if sort:
                valid_sorts = ["cost-asc", "cost-desc", "name-asc", "name-desc"]
                if sort in valid_sorts:
                    params.append(("sort", sort))
                    logger.debug(f"Applying sort '{sort}' to team {team_id} players")
                else:
                    logger.warning(f"Invalid sort parameter '{sort}' - ignoring")

            players = await self.get_all_items(params=params)
            logger.debug(
                f"Retrieved {len(players)} players for team {team_id} in season {season}"
            )
            return players

        except Exception as e:
            logger.error(f"Failed to get players for team {team_id}: {e}")
            return []

    async def get_players_by_name(self, name: str, season: int) -> List[Player]:
        """
        Search for players by name (partial match).

        Args:
            name: Player name or partial name
            season: Season number (required)

        Returns:
            List of matching players
        """
        try:
            params = [("season", str(season)), ("name", name)]

            players = await self.get_all_items(params=params)
            logger.debug(
                f"Found {len(players)} players matching '{name}' in season {season}"
            )
            return players

        except Exception as e:
            logger.error(f"Failed to search players by name '{name}': {e}")
            return []

    async def get_player_by_name_exact(
        self, name: str, season: int
    ) -> Optional[Player]:
        """
        Get player by exact name match (case-insensitive).

        Args:
            name: Exact player name
            season: Season number (required)

        Returns:
            Player instance or None if not found
        """
        try:
            players = await self.get_players_by_name(name, season)

            # Look for exact case-insensitive match
            name_lower = name.lower()
            for player in players:
                if player.name.lower() == name_lower:
                    logger.debug(f"Found exact match for '{name}': {player.name}")
                    return player

            logger.debug(f"No exact match found for '{name}'")
            return None

        except Exception as e:
            logger.error(f"Error finding exact player match for '{name}': {e}")
            return None

    async def search_players(
        self,
        query: str,
        limit: int = 10,
        season: Optional[int] = None,
        all_seasons: bool = False,
    ) -> List[Player]:
        """
        Search for players using the dedicated /v3/players/search endpoint.

        Args:
            query: Search query for player name
            limit: Maximum number of results to return (1-50)
            season: Season to search in (defaults to current season if all_seasons=False)
            all_seasons: If True, search across all seasons (ignores season parameter)

        Returns:
            List of matching players (up to limit)
        """
        try:
            params = [("q", query), ("limit", str(limit))]

            if all_seasons:
                # Pass season=0 to API to search all seasons
                params.append(("season", "0"))
            elif season is not None:
                params.append(("season", str(season)))
            # If neither all_seasons nor season specified, API defaults to current season

            client = await self.get_client()
            data = await client.get("players/search", params=params)

            if not data:
                logger.debug(f"No players found for search query '{query}'")
                return []

            # Handle API response format: {'count': int, 'players': [...]}
            items, count = self._extract_items_and_count_from_response(data)
            players = [self.model_class.from_api_data(item) for item in items]

            logger.debug(
                f"Search '{query}' returned {len(players)} of {count} matches (all_seasons={all_seasons})"
            )
            return players

        except Exception as e:
            logger.error(f"Error in player search for '{query}': {e}")
            return []

    async def search_players_fuzzy(
        self,
        query: str,
        limit: int = 10,
        season: Optional[int] = None,
        all_seasons: bool = False,
    ) -> List[Player]:
        """
        Fuzzy search for players by name with limit using the search endpoint.

        Args:
            query: Search query
            limit: Maximum results to return
            season: Season to search in (defaults to current season if all_seasons=False)
            all_seasons: If True, search across all seasons

        Returns:
            List of matching players (up to limit)
        """
        try:
            # Use the search endpoint which handles fuzzy matching and all-seasons
            return await self.search_players(
                query, limit=limit, season=season, all_seasons=all_seasons
            )

        except Exception as e:
            logger.error(f"Error in fuzzy search for '{query}': {e}")
            return []

    async def _search_players_fuzzy_legacy(
        self, query: str, limit: int = 10, season: Optional[int] = None
    ) -> List[Player]:
        """
        Legacy fuzzy search for players by name with limit using existing name search functionality.
        Kept for backwards compatibility if needed.

        Args:
            query: Search query
            limit: Maximum results to return
            season: Season to search in (defaults to current season)

        Returns:
            List of matching players (up to limit)
        """
        try:
            if season is None:
                season = get_config().sba_season

            # Use the existing name-based search that actually works
            players = await self.get_players_by_name(query, season)

            # Sort by relevance (exact matches first, then partial)
            query_lower = query.lower()
            exact_matches = []
            partial_matches = []

            for player in players:
                name_lower = player.name.lower()
                if name_lower == query_lower:
                    exact_matches.append(player)
                elif query_lower in name_lower:
                    partial_matches.append(player)

            # Combine and limit results
            results = exact_matches + partial_matches
            limited_results = results[:limit]

            logger.debug(
                f"Fuzzy search '{query}' returned {len(limited_results)} of {len(results)} matches"
            )
            return limited_results

        except Exception as e:
            logger.error(f"Error in fuzzy search for '{query}': {e}")
            return []

    async def get_free_agents(self, season: int) -> List[Player]:
        """
        Get all free agent players.

        Args:
            season: Season number (required)

        Returns:
            List of free agent players
        """
        try:
            params = [
                ("team_id", get_config().free_agent_team_id),
                ("season", str(season)),
            ]

            players = await self.get_all_items(params=params)
            logger.debug(f"Retrieved {len(players)} free agents")
            return players

        except Exception as e:
            logger.error(f"Failed to get free agents: {e}")
            return []

    async def is_free_agent(self, player: Player) -> bool:
        """
        Check if a player is a free agent.

        Args:
            player: Player instance to check

        Returns:
            True if player is a free agent
        """
        return player.team_id == get_config().free_agent_team_id

    async def get_top_free_agents(self, season: int, limit: int = 5) -> List[Player]:
        """
        Get top free agents sorted by sWAR (wara) descending.

        Args:
            season: Season number (required)
            limit: Maximum number of players to return (default 5)

        Returns:
            List of top free agent players sorted by sWAR
        """
        try:
            free_agents = await self.get_free_agents(season)
            # Sort by wara descending and take top N
            sorted_fa = sorted(
                free_agents, key=lambda p: p.wara if p.wara else 0.0, reverse=True
            )
            return sorted_fa[:limit]
        except Exception as e:
            logger.error(f"Failed to get top free agents: {e}")
            return []

    async def get_players_by_position(self, position: str, season: int) -> List[Player]:
        """
        Get players by position.

        Args:
            position: Player position (e.g., 'C', '1B', 'OF')
            season: Season number (required)

        Returns:
            List of players at the position
        """
        try:
            params = [("position", position), ("season", str(season))]

            players = await self.get_all_items(params=params)
            logger.debug(f"Retrieved {len(players)} players at position {position}")
            return players

        except Exception as e:
            logger.error(f"Failed to get players by position {position}: {e}")
            return []

    async def update_player(self, player_id: int, updates: dict) -> Optional[Player]:
        """
        Update player information.

        Args:
            player_id: Player ID to update
            updates: Dictionary of fields to update

        Returns:
            Updated player instance or None

        Note:
            The player PATCH endpoint uses query parameters instead of JSON body,
            so we pass use_query_params=True to the patch method.
        """
        try:
            return await self.patch(player_id, updates, use_query_params=True)
        except Exception as e:
            logger.error(f"Failed to update player {player_id}: {e}")
            return None

    async def update_player_team(
        self,
        player_id: int,
        new_team_id: int,
        dem_week: Optional[int] = None
    ) -> Optional[Player]:
        """
        Update a player's team assignment.

        Args:
            player_id: Player ID to update
            new_team_id: New team ID to assign
            dem_week: Optional demotion/designation week to set.
                      - Transaction freeze: Current.week + 2
                      - Draft picks: Current.week + 2
                      - IL moves: Current.week
                      - Admin/Other: Not set (None)

        Returns:
            Updated player instance or None

        Raises:
            APIException: If player update fails

        Examples:
            # Transaction freeze (Monday morning)
            await player_service.update_player_team(
                player_id, new_team_id, dem_week=current.week + 2
            )

            # Draft pick (manual or auto-draft)
            await player_service.update_player_team(
                player_id, new_team_id, dem_week=current.week + 2
            )

            # IL move (/ilmove command)
            await player_service.update_player_team(
                player_id, new_team_id, dem_week=current.week
            )

            # Admin move (no dem_week)
            await player_service.update_player_team(player_id, new_team_id)
        """
        try:
            logger.info(
                f"Updating player {player_id} team to {new_team_id}"
                + (f" with dem_week={dem_week}" if dem_week is not None else "")
            )

            # Build update dictionary
            updates = {"team_id": new_team_id}
            if dem_week is not None:
                updates["demotion_week"] = dem_week

            updated_player = await self.update_player(player_id, updates)

            if updated_player:
                logger.info(
                    f"Successfully updated player {player_id} to team {new_team_id}"
                    + (f" with dem_week={dem_week}" if dem_week is not None else "")
                )
                return updated_player
            else:
                logger.error(
                    f"Failed to update player {player_id} team - no response from API"
                )
                raise APIException(
                    f"Failed to update player {player_id} team assignment"
                )

        except Exception as e:
            logger.error(f"Error updating player {player_id} team: {e}")
            raise APIException(f"Failed to update player team: {e}")


# Global service instance - will be properly initialized in __init__.py
player_service = PlayerService()