from django.db import models


class PlayerSeason(models.Model):
    player = models.ForeignKey("players.Player", on_delete=models.CASCADE, related_name="player_seasons")
    season = models.ForeignKey("competitions.Season", on_delete=models.CASCADE, related_name="player_seasons")
    team = models.ForeignKey(
        "teams.Team",
        on_delete=models.SET_NULL,
        blank=True,
        null=True,
        related_name="player_seasons",
    )
    competition = models.ForeignKey(
        "competitions.Competition",
        on_delete=models.SET_NULL,
        blank=True,
        null=True,
        related_name="player_seasons",
    )
    games_played = models.PositiveSmallIntegerField(default=0)
    games_started = models.PositiveSmallIntegerField(default=0)
    minutes_played = models.PositiveIntegerField(default=0)

    class Meta:
        ordering = ["-season__start_date", "player__full_name"]
        constraints = [
            models.UniqueConstraint(
                fields=["player", "season", "team", "competition"],
                name="uq_player_season_scope",
            )
        ]
        indexes = [
            models.Index(fields=["player", "season"]),
            models.Index(fields=["season", "team"]),
            models.Index(fields=["season", "competition"]),
            models.Index(fields=["team", "competition"]),
        ]

    def __str__(self) -> str:
        return f"{self.player} - {self.season}"


class PlayerSeasonStats(models.Model):
    player_season = models.OneToOneField(
        "stats.PlayerSeason", on_delete=models.CASCADE, related_name="stats"
    )
    points = models.DecimalField(max_digits=6, decimal_places=2, default=0)
    rebounds = models.DecimalField(max_digits=6, decimal_places=2, default=0)
    assists = models.DecimalField(max_digits=6, decimal_places=2, default=0)
    steals = models.DecimalField(max_digits=6, decimal_places=2, default=0)
    blocks = models.DecimalField(max_digits=6, decimal_places=2, default=0)
    turnovers = models.DecimalField(max_digits=6, decimal_places=2, default=0)
    fg_pct = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)
    three_pct = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)
    ft_pct = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)
    usage_rate = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)
    true_shooting_pct = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)
    player_efficiency_rating = models.DecimalField(max_digits=6, decimal_places=2, blank=True, null=True)

    class Meta:
        indexes = [
            models.Index(fields=["points"]),
            models.Index(fields=["rebounds"]),
            models.Index(fields=["assists"]),
            models.Index(fields=["usage_rate"]),
            models.Index(fields=["true_shooting_pct"]),
        ]

    def __str__(self) -> str:
        return f"Stats for {self.player_season}"