import json

from web.services.web_service import WebService


class TeamContextService:
    """Single source of truth for the private team's active roster."""

    @staticmethod
    def get_active_lineup():
        lineup = WebService.get_active_lineup()
        return dict(lineup) if lineup else None

    @staticmethod
    def get_active_roster_ids():
        lineup = TeamContextService.get_active_lineup()
        if not lineup:
            return []

        try:
            raw_ids = json.loads(lineup.get('player_ids_json') or '[]')
        except (TypeError, json.JSONDecodeError):
            return []

        if not isinstance(raw_ids, list):
            return []

        seen = set()
        roster_ids = []
        for raw_id in raw_ids:
            steam_id = str(raw_id).strip()
            if steam_id and steam_id not in seen:
                seen.add(steam_id)
                roster_ids.append(steam_id)
        return roster_ids