import uuid

from django.db import models

from apps.accounts.models import Company, TimeStampedModel, User


class AuditLog(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name='audit_logs')
    company = models.ForeignKey(Company, on_delete=models.SET_NULL, null=True, blank=True, related_name='audit_logs')
    action = models.CharField(max_length=255)
    model_name = models.CharField(max_length=100)
    object_id = models.CharField(max_length=64, blank=True)
    changes = models.JSONField(default=dict, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        ordering = ['-created_at']

    def __str__(self):
        return f'{self.action} - {self.model_name}'


class ActivityLog(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name='activity_logs')
    description = models.CharField(max_length=500)
    ip_address = models.GenericIPAddressField(null=True, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        ordering = ['-created_at']

    def __str__(self):
        return self.description


class FileUpload(TimeStampedModel):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    uploaded_by = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name='file_uploads')
    file = models.FileField(upload_to='uploads/%Y/%m/')
    original_name = models.CharField(max_length=255)
    content_type = models.CharField(max_length=100, blank=True)
    size_bytes = models.PositiveIntegerField(default=0)

    def __str__(self):
        return self.original_name


class Setting(models.Model):
    company = models.ForeignKey(Company, on_delete=models.CASCADE, related_name='settings')
    key = models.CharField(max_length=100)
    value = models.JSONField(default=dict, blank=True)

    class Meta:
        unique_together = ('company', 'key')

    def __str__(self):
        return f'{self.company.name} - {self.key}'