"""
DataExport model — GDPR data portability requests.

Maps to AGENT.md DBML: `data_exports` table (Lines 442-451).
"""
from django.conf import settings
from django.db import models

from core.models import BaseModel


class DataExport(BaseModel):
    """
    Tracks a user's data export request (GDPR Article 20).

    Goes through: pending → processing → completed → expired.
    """

    class Status(models.TextChoices):
        PENDING = "pending", "Pending"
        PROCESSING = "processing", "Processing"
        COMPLETED = "completed", "Completed"
        FAILED = "failed", "Failed"
        EXPIRED = "expired", "Expired"

    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        related_name="data_exports",
    )
    org = models.ForeignKey(
        "organizations.Organization",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name="data_exports",
    )
    status = models.CharField(
        max_length=20,
        choices=Status.choices,
        default=Status.PENDING,
    )
    file_path = models.CharField(max_length=500, blank=True, default="")
    requested_at = models.DateTimeField(auto_now_add=True)
    completed_at = models.DateTimeField(null=True, blank=True)
    expires_at = models.DateTimeField(null=True, blank=True)

    class Meta:
        db_table = "data_exports"
        ordering = ["-requested_at"]

    def __str__(self) -> str:
        return f"Export {self.pk} ({self.get_status_display()})"