from django.db import models
from datetime import date

from django.db.models.deletion import CASCADE
from jumpers.models import Jumper


class Chrono(models.Model):
    """
    Représente les chronos (de chandelles ou de série) enregistrés pour un(e) gymnaste.
    """

    TYPE_CHOICES = ((0, "10 |"), (1, "Routine"))
    SCORE_TYPE_CHOICE = ((0, "Chrono"), (1, "ToF"))

    class Meta:
        verbose_name = "Chrono"
        verbose_name_plural = "Chronos"
        ordering = ["date", "jumper"]
        # unique_together = ("jumper", "skill")

    jumper = models.ForeignKey(
        Jumper,
        verbose_name="Jumper",
        related_name="chronos",
        on_delete=models.CASCADE,
    )
    type = models.PositiveSmallIntegerField(
        choices=TYPE_CHOICES, verbose_name="Chrono type"
    )
    score_type = models.PositiveSmallIntegerField(
        choices=SCORE_TYPE_CHOICE, verbose_name="Score type"
    )
    score = models.DecimalField(max_digits=5, decimal_places=3)
    date = models.DateField(default=date.today, verbose_name="Date")

    def __str__(self):
        return "%s - %s (%s - %s)" % (
            self.jumper,
            self.score,
            self.date,
            self.type,
        )
    
    @property
    def tof(self):
        """ Renvoie le time of flight d'un gymnaste. """
        if self.score_type == 1:
            return self.score
        else:
            tof = round(( self.score * 13 ) / 15, 3)
            tof = ( tof * 1000 ) - (( tof * 1000 ) % 5)
            return tof  / 1000


class Skill(models.Model):
    """
    Représente la ligne d'apprentissage.
    """

    class Meta:
        verbose_name = "Skill"
        verbose_name_plural = 'Skills'
        ordering = ['short_label']

    short_label = models.CharField(verbose_name="Short label", max_length=50, null=False, blank=False)
    long_label = models.CharField(verbose_name="Long label", max_length=255, null=False, blank=False)
    difficulty = models.DecimalField(
        max_digits=3,
        decimal_places=1,
        verbose_name="Difficulty"
    )
    level = models.PositiveSmallIntegerField(default=0)
    rank = models.PositiveSmallIntegerField(default=0)
    numeric_notation = models.CharField(max_length=25)
    ancestor = models.ManyToManyField("self", null=True, blank=True)

    def __str__(self):
        return "%s (%s) - %s" % (
            self.short_label,
            self.numeric_notation,
            self.difficulty
        )


class LearnedSkill(models.Model):
    """
    Représente la capacité d'un gymnaste à savori faire un skill de la ligne d'apprentissage.
    """

    TYPE_CHOICES = ((0, "No"), (1, "With help"), (2, "Without help"), (3, "Chained"))

    class Meta:
        verbose_name = 'Learned Skill'
        verbose_name_plural = 'Learned Skills'
        unique_together = ('jumper', 'skill', 'date')


    jumper = models.ForeignKey(
        Jumper,
        verbose_name='Jumper',
        related_name='can_do_skill',
        on_delete=models.CASCADE,
    )
    skill = models.ForeignKey(
        Skill,
        verbose_name='Skill',
        related_name='done_by_jumpers',
        on_delete=models.CASCADE,
    )
    cando = models.PositiveSmallIntegerField(
        choices=TYPE_CHOICES, verbose_name="Can do type"
    )
    date = models.DateField(default=date.today, verbose_name="Date")