from django.db import models
from django.urls import reverse
from django.utils.translation import gettext as _


class Player(models.Model):
    name = models.CharField(max_length=255, unique=True)

    address = models.TextField(_("address"), blank=True)

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    class Meta:
        verbose_name = _("player")
        verbose_name_plural = _("players")

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse("guild:player_detail", kwargs={"pk": self.pk})


class Resource(models.Model):
    name = models.CharField(max_length=255, unique=True)
    description = models.TextField()

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    class Meta:
        verbose_name = _("resource")
        verbose_name_plural = _("resources")

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse("guild:resource_detail", kwargs={"pk": self.pk})


class Adventure(models.Model):
    name = models.CharField(max_length=255)
    description = models.TextField()

    master = models.ForeignKey(
        "Player",
        verbose_name=_("master"),
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    @property
    def last_session(self):
        return self.playsession_set.order_by("-date").first()

    class Meta:
        verbose_name = _("Adventure")
        verbose_name_plural = _("Adventures")

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse("guild:adventure_detail", kwargs={"pk": self.pk})


class Character(models.Model):
    class Status(models.TextChoices):
        ALIVE = "ALIVE", _("Alive")
        DEAD = "DEAD", _("Dead")
        RETIRED = "RETIRED", _("Retired")
        UNKNOWN = "UNKNOWN", _("Unknown")

    name = models.CharField(max_length=255, unique=True)
    description = models.TextField()
    status = models.CharField(
        max_length=16, choices=Status.choices, default=Status.ALIVE
    )

    player = models.ForeignKey(
        "Player",
        verbose_name=_("player"),
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )

    picture = models.ImageField(
        _("Character Picture"), null=True, blank=True, upload_to="uploads/"
    )

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    class Meta:
        verbose_name = _("character")
        verbose_name_plural = _("characters")
        ordering = ["name"]

    def __str__(self):
        return self.name

    @classmethod
    def get_by_name(cls, name):
        return cls.objects.filter(name=name).get()

    def get_absolute_url(self):
        return reverse("guild:character_detail", kwargs={"pk": self.pk})


class PlaySession(models.Model):
    date = models.DateField()
    adventure = models.ForeignKey(
        "Adventure", verbose_name=_("adventure"), on_delete=models.CASCADE
    )
    characters = models.ManyToManyField("Character", verbose_name=_("characters"))
    npcs = models.ManyToManyField("NPC", verbose_name=_("npcs"), blank=True)

    summary = models.TextField()

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    class Meta:
        verbose_name = _("playsession")
        verbose_name_plural = _("playsessions")
        ordering = ["-date"]

    def __str__(self):
        return str(self.date)

    def get_absolute_url(self):
        return (
            reverse("guild:adventure_detail", kwargs={"pk": self.adventure.pk})
            + "#playsession"
            + str(self.pk)
        )

    def save(self, *args, **kwargs):
        super().save(*args, **kwargs)
        PlaySessionSummaryVersion.objects.create(
            playsession=self,
            summary=self.summary,
        )


class PlaySessionSummaryVersion(models.Model):
    playsession = models.ForeignKey(
        "PlaySession",
        verbose_name=_("playsession"),
        on_delete=models.SET_NULL,
        null=True,
    )
    summary = models.TextField()

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)

    class Meta:
        verbose_name = _("playsession summary version")
        verbose_name_plural = _("playsession summary versions")
        ordering = ["-created_at"]

    def __str__(self):
        return f"{self.playsession} - {self.created_at}"

    def get_absolute_url(self):
        return reverse("guild:playsession_detail", kwargs={"pk": self.playsession.pk})


class Reward(models.Model):
    resource = models.ForeignKey(
        "Resource", verbose_name=_("resource"), on_delete=models.CASCADE
    )
    character = models.ForeignKey(
        "Character",
        verbose_name=_("character"),
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    playsession = models.ForeignKey(
        "PlaySession",
        verbose_name=_("playsession"),
        on_delete=models.CASCADE,
        null=False,
    )
    amount = models.IntegerField()

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    class Meta:
        verbose_name = _("reward")
        verbose_name_plural = _("rewards")

    def __str__(self):
        return f"{self.resource.name} ({self.amount}) - {self.character}"

    def get_absolute_url(self):
        return reverse("guild:reward_detail", kwargs={"pk": self.pk})


class NPC(models.Model):
    name = models.CharField(max_length=255, unique=True)
    description = models.TextField()

    picture = models.ImageField(
        _("NPC Picture"), null=True, blank=True, upload_to="uploads/"
    )

    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
    updated_at = models.DateTimeField(_("updated at"), auto_now=True)

    class Meta:
        verbose_name = _("npc")
        verbose_name_plural = _("npcs")

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse("guild:npc_detail", kwargs={"pk": self.pk})

    @classmethod
    def get_by_name(cls, name):
        return cls.objects.filter(name=name).get()