from django.db import models

from core.models import TimeStampedModel, UUIDPrimaryKeyModel


class POSConnection(UUIDPrimaryKeyModel, TimeStampedModel):
    class Provider(models.TextChoices):
        GENERIC = "generic", "Generic REST"
        SQUARE = "square", "Square"
        LIGHTSPEED = "lightspeed", "Lightspeed"
        BINDERPOS = "binderpos", "BinderPOS"
        CRYSTALCOMMERCE = "crystalcommerce", "CrystalCommerce"

    name = models.CharField(max_length=120)
    provider = models.CharField(
        max_length=32, choices=Provider.choices, default=Provider.GENERIC
    )
    api_base_url = models.URLField(blank=True)
    api_token = models.CharField(max_length=255, blank=True)
    webhook_secret = models.CharField(max_length=255, blank=True)
    is_active = models.BooleanField(default=True)

    class Meta:
        ordering = ["name"]

    def __str__(self) -> str:
        return self.name


class SyncEvent(UUIDPrimaryKeyModel, TimeStampedModel):
    class Direction(models.TextChoices):
        INBOUND = "inbound", "POS → site"
        OUTBOUND = "outbound", "Site → POS"

    class Status(models.TextChoices):
        PENDING = "pending", "Pending"
        DONE = "done", "Done"
        FAILED = "failed", "Failed"

    connection = models.ForeignKey(
        POSConnection,
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="events",
    )
    direction = models.CharField(max_length=16, choices=Direction.choices)
    status = models.CharField(
        max_length=16, choices=Status.choices, default=Status.PENDING
    )
    sku = models.CharField(max_length=64)
    quantity = models.IntegerField(default=0)
    external_id = models.CharField(max_length=255, blank=True)
    payload = models.JSONField(default=dict, blank=True)
    error = models.TextField(blank=True)

    class Meta:
        ordering = ["-created_at"]

    def __str__(self) -> str:
        return f"{self.direction} {self.sku} × {self.quantity} · {self.status}"