import uuid

from django.db import models


class Team(models.Model):
    """
    Represent a team participating in the event
    """

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=32)

    validated_flags = models.ManyToManyField(to="Flag", blank=True, related_name="validated_by_teams")

    def __str__(self):
        return f"<{self.__class__.__name__}({self.name!r}, {self.id!r})>"


class Flag(models.Model):
    """
    Represent a flag that can be validated by the team
    """

    class FlagType(models.IntegerChoices):
        NORMAL = 0
        BONUS = 1
        MALUS = 2

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)

    # the flag might depend on other flags
    parents = models.ManyToManyField(
        "self",
        blank=True,
        symmetrical=False,
        related_name="children",
    )

    # information about the flags
    # TODO(Faraphel): store code as hash ?
    code = models.CharField(max_length=32)  # the password that must be given to obtain the flag
    name = models.CharField(max_length=32)  # the name of the flag
    description = models.TextField()  # the description on how to obtain the flag

    # TODO(Faraphel): replace with or add a points amount you gain ?
    type = models.IntegerField(choices=FlagType.choices, default=FlagType.NORMAL)

    def __str__(self):
        return f"<{self.__class__.__name__}({self.name!r}, {self.id!r})>"


class Hint(models.Model):
    """
    Represent a hint that can be given to a team
    """

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    importance = models.PositiveIntegerField()
    description = models.TextField()
    penalty = models.PositiveIntegerField()
    flag = models.ForeignKey(to=Flag, on_delete=models.CASCADE, related_name="hints")

    def __str__(self):
        return f"<{self.__class__.__name__}({self.flag.name!r}, {self.id!r})>"