from __future__ import annotations

from django.conf import settings
from django.db import models


class ActiveSite(models.Model):
    """
    Registry of a farm-location dashboard-cpsp deployment that HQ can mirror from.

    Outbound API key is stored here for local/dev scaffolding. Prefer a secret
    manager or encrypted field before production.
    """

    active_site_id = models.BigAutoField(primary_key=True)
    code = models.SlugField(max_length=64, unique=True, help_text="Stable id, e.g. sukawarna")
    name = models.CharField(max_length=120)
    source_site_id = models.SlugField(
        max_length=64,
        blank=True,
        default="",
        db_index=True,
        help_text="Farm-location Site.site_id (slug); equals HQ sites.site_id when claimed",
    )
    api_base_url = models.URLField(
        max_length=255,
        blank=True,
        default="",
        help_text="Optional site API root including /api/v1 (for outbound sync/push)",
    )
    api_key = models.CharField(
        max_length=255,
        blank=True,
        help_text="X-API-Key for pulling from the site API (keep server-side only)",
    )
    managed_by = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="managed_active_sites",
        help_text="GM / GM Admin who manages this active site",
    )
    is_active = models.BooleanField(default=True)
    last_synced_at = models.DateTimeField(null=True, blank=True)
    last_sync_status = models.CharField(max_length=32, blank=True, default="")
    last_sync_message = models.TextField(blank=True, default="")
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        db_table = "active_sites"
        ordering = ["name"]
        constraints = [
            models.UniqueConstraint(
                fields=["source_site_id"],
                condition=~models.Q(source_site_id=""),
                name="uniq_active_site_source_site_id",
            ),
        ]

    def __str__(self) -> str:
        return f"{self.name} ({self.code})"