from typing import List

from sqlalchemy import Column, DateTime, Float, ForeignKey, Integer, String
from sqlalchemy.orm import relationship, Mapped

from .database import Base


class Player(Base):
    __tablename__ = "players"

    id = Column(Integer, primary_key=True)
    name = Column(String, nullable=False)

    decks = relationship("Deck", back_populates="owner")


class Deck(Base):
    __tablename__ = "decks"

    id = Column(Integer, primary_key=True)
    name = Column(String, nullable=False)
    description = Column(String)
    owner_id = Column(Integer, ForeignKey("players.id"))

    owner = relationship("Player", back_populates="decks")


class WinType(Base):
    __tablename__ = "win_types"

    id = Column(Integer, primary_key=True)
    name = Column(String, nullable=False)


class Format(Base):
    __tablename__ = "formats"

    id = Column(Integer, primary_key=True)
    name = Column(String, nullable=False)


class Game(Base):
    __tablename__ = "games"

    id = Column(Integer, primary_key=True)
    date = Column(DateTime, nullable=False)
    deck_id_1 = Column(Integer, ForeignKey("decks.id"), nullable=False)
    deck_id_2 = Column(Integer, ForeignKey("decks.id"), nullable=False)
    deck_id_3 = Column(Integer, ForeignKey("decks.id"))
    deck_id_4 = Column(Integer, ForeignKey("decks.id"))
    deck_id_5 = Column(Integer, ForeignKey("decks.id"))
    deck_id_6 = Column(Integer, ForeignKey("decks.id"))
    winning_deck_id = Column(Integer, ForeignKey("decks.id"), nullable=False)
    number_of_turns = Column(Integer, nullable=False)
    first_player_out_turn = Column(Integer, nullable=False)
    win_type_id = Column(Integer, ForeignKey("win_types.id"), nullable=False)
    format_id = Column(Integer, ForeignKey("formats.id"), nullable=False)
    description = Column(String)
    elo_scores: Mapped[List["EloScore"]] = relationship()
    # In support of ties, we allow a Game to have a (comma-separated) set of (other) winning Deck Ids, all of which will
    # be used for ELO calculation.
    # Is this the best approach? Probably not!
    # Does it work (without having to migrate existing data to a new format)? Yes!
    other_winning_deck_ids = Column(String)


class EloScore(Base):
    __tablename__ = "elo_scores"

    id = Column(Integer, primary_key=True)
    # This Elo Score was calculated after this game
    after_game_id: Mapped[int] = Column(Integer, ForeignKey("games.id"))
    deck_id = Column(Integer, ForeignKey("decks.id"))
    score = Column(Float(asdecimal=True, decimal_return_scale=3))