from django.core.validators import MinLengthValidator, MinValueValidator, MaxValueValidator, MaxLengthValidator
from django.db import models


class Author(models.Model):
    full_name = models.CharField(max_length=100, validators=[MinLengthValidator(3)])
    email = models.EmailField(unique=True)
    is_banned = models.BooleanField(default=False)
    birth_year = models.PositiveIntegerField(validators=[MinValueValidator(1900), MaxValueValidator(2005)])
    website = models.URLField(null=True)


class Article(models.Model):
    CATEGORY_CHOICES = (
        ("Technology", "Technology"),
        ("Science", "Science"),
        ("Education", "Education")
    )
    title = models.CharField(max_length=200, validators=[MinLengthValidator(5)])
    content = models.TextField(validators=[MinLengthValidator(10)])
    category = models.CharField(max_length=10, choices=CATEGORY_CHOICES, default="Technology",)
    authors = models.ManyToManyField("Author")
    published_on = models.DateTimeField(auto_now_add=True, editable=False,)  # auto_now_add !!!


class Review(models.Model):
    content = models.TextField(validators=[MinLengthValidator(10)])
    rating = models.FloatField(validators=[MinValueValidator(1.0), MaxValueValidator(5.0)])
    author = models.ForeignKey('Author', on_delete=models.CASCADE)
    article = models.ForeignKey('Article', on_delete=models.CASCADE)
    published_on = models.DateTimeField(auto_now_add=True, editable=False)