from django.db import models
from django.core.exceptions import ValidationError


def validate_image_size(value):
    filesize = value.size
    if filesize > 1 * 1024 * 1024:  # 1MB
        raise ValidationError("Maximum file size is 1MB")


class CloudProvider(models.Model):
    name = models.CharField(max_length=100)
    description = models.TextField(blank=True)
    logo = models.ImageField(
        upload_to="cloud_provider_logos/",
        validators=[validate_image_size],
        null=True,
        blank=True,
    )

    def __str__(self):
        return self.name


class Country(models.Model):
    name = models.CharField(max_length=100)
    code = models.CharField(max_length=2)

    class Meta:
        verbose_name_plural = "Countries"

    def __str__(self):
        return self.name


class ServiceLevel(models.Model):
    name = models.CharField(max_length=100)
    description = models.TextField()
    response_time = models.CharField(max_length=50)

    def __str__(self):
        return self.name


class Service(models.Model):
    name = models.CharField(max_length=200)
    description = models.TextField()
    cloud_provider = models.ForeignKey(CloudProvider, on_delete=models.CASCADE)
    service_level = models.ForeignKey(ServiceLevel, on_delete=models.CASCADE)
    countries = models.ManyToManyField(Country)
    price = models.DecimalField(max_digits=10, decimal_places=2)
    features = models.TextField()
    logo = models.ImageField(
        upload_to="service_logos/",
        validators=[validate_image_size],
        null=True,
        blank=True,
    )
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.name