"""Stadium data model for sportstime-parser."""

from dataclasses import dataclass
from typing import Optional
import json


@dataclass
class Stadium:
    """Represents a stadium with all CloudKit fields.

    Attributes:
        id: Canonical stadium ID (e.g., 'stadium_nba_paycom_center')
        sport: Primary sport code (e.g., 'nba', 'mlb')
        name: Current stadium name (e.g., 'Paycom Center')
        city: City name (e.g., 'Oklahoma City')
        state: State/province code (e.g., 'OK', 'ON')
        country: Country code (e.g., 'USA', 'Canada')
        latitude: Latitude coordinate
        longitude: Longitude coordinate
        capacity: Seating capacity
        surface: Playing surface (e.g., 'grass', 'turf', 'hardwood')
        roof_type: Roof type (e.g., 'dome', 'retractable', 'open')
        opened_year: Year stadium opened
        image_url: URL to stadium image
        timezone: IANA timezone (e.g., 'America/Chicago')
    """

    id: str
    sport: str
    name: str
    city: str
    state: str
    country: str
    latitude: float
    longitude: float
    capacity: Optional[int] = None
    surface: Optional[str] = None
    roof_type: Optional[str] = None
    opened_year: Optional[int] = None
    image_url: Optional[str] = None
    timezone: Optional[str] = None

    def to_dict(self) -> dict:
        """Convert to dictionary for JSON serialization."""
        return {
            "id": self.id,
            "sport": self.sport,
            "name": self.name,
            "city": self.city,
            "state": self.state,
            "country": self.country,
            "latitude": self.latitude,
            "longitude": self.longitude,
            "capacity": self.capacity,
            "surface": self.surface,
            "roof_type": self.roof_type,
            "opened_year": self.opened_year,
            "image_url": self.image_url,
            "timezone": self.timezone,
        }

    def to_canonical_dict(self, primary_team_abbrevs: list[str] | None = None) -> dict:
        """Convert to canonical dictionary format matching iOS app schema.

        Args:
            primary_team_abbrevs: List of team abbreviations that play at this stadium.
                                  If None, defaults to empty list.

        Returns:
            Dictionary with field names matching JSONCanonicalStadium in BootstrapService.swift
        """
        return {
            "canonical_id": self.id,
            "name": self.name,
            "city": self.city,
            "state": self.state,
            "latitude": self.latitude,
            "longitude": self.longitude,
            "capacity": self.capacity if self.capacity is not None else 0,
            "sport": self.sport,
            "primary_team_abbrevs": primary_team_abbrevs or [],
            "year_opened": self.opened_year,
        }

    @classmethod
    def from_dict(cls, data: dict) -> "Stadium":
        """Create a Stadium from a dictionary (internal format)."""
        return cls(
            id=data["id"],
            sport=data["sport"],
            name=data["name"],
            city=data["city"],
            state=data["state"],
            country=data["country"],
            latitude=data["latitude"],
            longitude=data["longitude"],
            capacity=data.get("capacity"),
            surface=data.get("surface"),
            roof_type=data.get("roof_type"),
            opened_year=data.get("opened_year"),
            image_url=data.get("image_url"),
            timezone=data.get("timezone"),
        )

    @classmethod
    def from_canonical_dict(cls, data: dict) -> "Stadium":
        """Create a Stadium from a canonical dictionary (iOS app format)."""
        return cls(
            id=data["canonical_id"],
            sport=data["sport"],
            name=data["name"],
            city=data["city"],
            state=data["state"],
            country="USA",  # Canonical format doesn't include country
            latitude=data["latitude"],
            longitude=data["longitude"],
            capacity=data.get("capacity"),
            opened_year=data.get("year_opened"),
        )

    def to_json(self) -> str:
        """Serialize to JSON string."""
        return json.dumps(self.to_dict(), indent=2)

    @classmethod
    def from_json(cls, json_str: str) -> "Stadium":
        """Deserialize from JSON string."""
        return cls.from_dict(json.loads(json_str))

    def is_in_allowed_region(self) -> bool:
        """Check if stadium is in USA, Canada, or Mexico."""
        allowed = {"USA", "US", "United States", "Canada", "CA", "Mexico", "MX"}
        return self.country in allowed


def save_stadiums(stadiums: list[Stadium], filepath: str) -> None:
    """Save a list of stadiums to a JSON file."""
    with open(filepath, "w", encoding="utf-8") as f:
        json.dump([s.to_dict() for s in stadiums], f, indent=2)


def load_stadiums(filepath: str) -> list[Stadium]:
    """Load a list of stadiums from a JSON file (auto-detects format)."""
    with open(filepath, "r", encoding="utf-8") as f:
        data = json.load(f)
    # Detect format: canonical has "canonical_id", internal has "id"
    if data and "canonical_id" in data[0]:
        return [Stadium.from_canonical_dict(d) for d in data]
    return [Stadium.from_dict(d) for d in data]