from django.db import models
from tools.models import Markdownizable


class Educative(Markdownizable):
    """
    Classe `mère`.
    """

    class Meta:
        verbose_name = "Educatif"
        verbose_name_plural = "Educatifs"
        ordering = ["label", "short_label"]  # 'level',

    label = models.CharField(max_length=255, verbose_name="Long Name")
    short_label = models.CharField(max_length=255, verbose_name="Short Name")
    difficulty = models.DecimalField(
        max_digits=3, decimal_places=1, verbose_name="Difficulty"
    )
    level = models.PositiveSmallIntegerField(verbose_name="Level", default=0)
    rank = models.PositiveSmallIntegerField(verbose_name="Rank", default=0)
    educatives = models.ManyToManyField(
        "self", related_name="educatives_of", blank=True, symmetrical=False
    )
    prerequisites = models.ManyToManyField(
        "self", related_name="prerequisite_of", blank=True, symmetrical=False
    )
    age_boy = models.PositiveSmallIntegerField(
        blank=True, null=True, verbose_name="Boy's age"
    )
    age_girl = models.PositiveSmallIntegerField(
        blank=True, null=True, verbose_name="Girl's age"
    )

    def __str__(self):
        return "%s - %s (level: %s | diff: %s)" % (
            self.rank,
            self.label,
            self.level,
            self.difficulty,
        )


class TouchPosition(models.Model):
    """
        Classe représentant les différentes position d'arrivée/départ (landing position) en trampoline.
    """

    class Meta:
        verbose_name = "Landing"
        verbose_name_plural = "Landings"
        ordering = ["label", "short_label", "is_default", "allowed_in_competition"]

    label = models.CharField(max_length=30, verbose_name="Long label")
    short_label = models.CharField(max_length=15, verbose_name="Short label")
    allowed_in_competition = models.BooleanField(verbose_name="Allowed in competition")
    is_default = models.BooleanField(verbose_name="Défault ?")

    def __str__(self):
        return "%s" % (self.label)


def get_default_position():
    """
        Renvoie la position d'arrivée/départ par définie par défaut si elle existe. Sinon, renvoie None.
    """
    try:
        return TouchPosition.objects.get(default=True).id
    except:
        return None


class Skill(Educative):
    """
        Classe représentant une figure (aka un saut acrobatique).
    """

    # SELECT * FROM `objective_skill` WHERE educative_ptr_id NOT IN (SELECT DISTINCT(from_educative_id) FROM `objective_educative_prerequisite`)

    # SELECT * FROM `objective_skill`, `objective_educative` WHERE `objective_educative`.id = `objective_skill`.educative_ptr_id

    class Meta:
        verbose_name = "Skill"
        verbose_name_plural = "Skills"

    POSITION_CHOICES = (
        ("0", "None"),
        ("o", "Tuck"),
        # ("c", "Puck"),
        ("<", "Pike"),
        # ("L", "Half pike"),
        ("/", "Straight"),
        ("//", "Straddle"),
    )

    ROTATION_CHOICES = (
        (0, "None"),
        (1, "Frontward"),
        (2, "Backward"),
    )

    position = models.CharField(max_length=2, choices=POSITION_CHOICES)
    departure = models.ForeignKey(
        TouchPosition,
        related_name="depart_of",
        default=get_default_position,
        verbose_name="Take-off position",
        on_delete=models.CASCADE,
    )
    landing = models.ForeignKey(
        TouchPosition,
        related_name="landing_of",
        default=get_default_position,
        verbose_name="Landing position",
        on_delete=models.CASCADE,
    )
    rotation_type = models.PositiveSmallIntegerField(
        choices=ROTATION_CHOICES, verbose_name="Type de rotation"
    )
    rotation = models.PositiveSmallIntegerField(verbose_name="1/4 de rotation")
    twist = models.PositiveSmallIntegerField(verbose_name="1/2 Vrille")
    notation = models.CharField(max_length=25)
    simplified_notation = models.CharField(
        max_length=25, verbose_name="Notation simplifiée"
    )
    is_competitive = models.BooleanField(default=False)
    # importance = models.PositiveSmallIntegerField(default = 1)

    def __str__(self):
        return "%s (%s)" % (self.short_label, self.notation)