from django.core.validators import RegexValidator
from django.db import models


class ConsultationRequest(models.Model):
    class Subject(models.TextChoices):
        PHYSICS = "physics", "Физика"
        MATHEMATICS = "mathematics", "Математика"

    class Exam(models.TextChoices):
        OGE = "oge", "ОГЭ"
        EGE = "ege", "ЕГЭ"
        OTHER = "other", "Другая консультация"

    name = models.CharField("Имя ученика", max_length=100)
    phone = models.CharField(
        "Телефон",
        max_length=30,
        validators=[
            RegexValidator(
                regex=r"^[0-9+()\-\s]{7,30}$",
                message="Введите телефон в привычном формате.",
            )
        ],
    )
    contact = models.CharField("Telegram или другой способ связи", max_length=100, blank=True)
    subject = models.CharField("Предмет", max_length=20, choices=Subject.choices)
    exam = models.CharField("Цель подготовки", max_length=20, choices=Exam.choices)
    preferred_date = models.DateField("Желаемая дата")
    preferred_time = models.TimeField("Желаемое время")
    comment = models.TextField("Комментарий", max_length=1000, blank=True)
    created_at = models.DateTimeField("Создана", auto_now_add=True)
    is_processed = models.BooleanField("Заявка обработана", default=False)

    class Meta:
        verbose_name = "Заявка на консультацию"
        verbose_name_plural = "Заявки на консультации"
        ordering = ("is_processed", "preferred_date", "preferred_time")

    def __str__(self):
        return f"{self.name}: {self.get_subject_display()} — {self.preferred_date:%d.%m.%Y}"