from django.db import models

from core.enums import ClientFollowLogType
from core.models.base import UUIDPrimaryKeyModel


class ClientFollowLog(models.Model):
    """Partitioned table (PARTITION BY RANGE created_at).

    Managed via RunSQL; Django ORM treats parent as unmanaged.
    """

    id = models.UUIDField(primary_key=True)
    created_at = models.DateTimeField()
    client = models.ForeignKey(
        "fonrey_client.Client",
        on_delete=models.CASCADE,
        related_name="follow_logs",
    )

    log_type = models.CharField(max_length=30, choices=ClientFollowLogType.choices)
    purpose = models.CharField(max_length=50, blank=True, default="")
    content = models.TextField(blank=True, default="")
    log_tag = models.CharField(max_length=50, blank=True, default="")
    change_detail = models.JSONField(null=True, blank=True)

    is_public = models.BooleanField(default=True)
    is_deletable = models.BooleanField(default=True)

    operator = models.ForeignKey(
        "org.Staff", null=True, blank=True, on_delete=models.SET_NULL
    )
    operator_snapshot = models.JSONField(null=True, blank=True)

    deleted_at = models.DateTimeField(null=True, blank=True)

    class Meta:
        db_table = "client_follow_logs"
        managed = False
        unique_together = (("id", "created_at"),)


class ClientFollowLogAttachment(UUIDPrimaryKeyModel):
    follow_log_id = models.UUIDField()  # cross-partitioned FK; not enforced via Django FK
    file_key = models.TextField()
    file_name = models.CharField(max_length=255)
    file_size = models.IntegerField()
    file_type = models.CharField(max_length=10, blank=True, default="")
    has_location = models.BooleanField(default=False)
    sort_order = models.SmallIntegerField(default=0)
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        db_table = "client_follow_log_attachments"
        indexes = [models.Index(fields=["follow_log_id"], name="idx_cfla_log")]