inital commit

booking/models.py

@@ -0,0 +1,104 @@
+from django.conf import settings
+from django.db import models
+from django.db.models import Q
+
+
+class AvailabilitySlot(models.Model):
+    equipment_item = models.ForeignKey(
+        "equipment.EquipmentItem",
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+        related_name="availability_slots",
+    )
+    adventure_offering = models.ForeignKey(
+        "adventrues.AdventureOffering",
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+        related_name="availability_slots",
+    )
+    starts_at = models.DateTimeField()
+    ends_at = models.DateTimeField()
+    is_available = models.BooleanField(default=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        constraints = [
+            models.CheckConstraint(
+                condition=Q(equipment_item__isnull=False, adventure_offering__isnull=True)
+                | Q(equipment_item__isnull=True, adventure_offering__isnull=False),
+                name="availability_slot_exactly_one_target",
+            ),
+            models.CheckConstraint(condition=Q(ends_at__gt=models.F("starts_at")), name="availability_slot_valid_range"),
+        ]
+        ordering = ("starts_at",)
+
+    def __str__(self) -> str:
+        target = self.equipment_item or self.adventure_offering
+        return f"{target} | {self.starts_at} - {self.ends_at}"
+
+
+class Booking(models.Model):
+    class Status(models.TextChoices):
+        REQUESTED = "requested", "Requested"
+        APPROVED = "approved", "Approved"
+        DECLINED = "declined", "Declined"
+        CANCELLED = "cancelled", "Cancelled"
+        CONFIRMED = "confirmed", "Confirmed"
+
+    customer = models.ForeignKey(
+        settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="bookings", limit_choices_to={"is_customer": True}
+    )
+    vendor = models.ForeignKey("accounts.VendorProfile", on_delete=models.CASCADE, related_name="bookings")
+    equipment_item = models.ForeignKey(
+        "equipment.EquipmentItem", on_delete=models.SET_NULL, null=True, blank=True, related_name="bookings"
+    )
+    adventure_offering = models.ForeignKey(
+        "adventrues.AdventureOffering", on_delete=models.SET_NULL, null=True, blank=True, related_name="bookings"
+    )
+    starts_at = models.DateTimeField()
+    ends_at = models.DateTimeField()
+    status = models.CharField(max_length=16, choices=Status.choices, default=Status.REQUESTED)
+    total_price = models.DecimalField(max_digits=10, decimal_places=2, default=0)
+    customer_notes = models.TextField(blank=True)
+    vendor_notes = models.TextField(blank=True)
+    listing_click = models.ForeignKey(
+        "marketing.ListingClick",
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name="bookings",
+    )
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        constraints = [
+            models.CheckConstraint(
+                condition=Q(equipment_item__isnull=False, adventure_offering__isnull=True)
+                | Q(equipment_item__isnull=True, adventure_offering__isnull=False),
+                name="booking_exactly_one_target",
+            ),
+            models.CheckConstraint(condition=Q(ends_at__gt=models.F("starts_at")), name="booking_valid_range"),
+        ]
+        ordering = ("-created_at",)
+
+    def __str__(self) -> str:
+        return f"Booking #{self.id} ({self.status})"
+
+
+class BookingEventLog(models.Model):
+    booking = models.ForeignKey(Booking, on_delete=models.CASCADE, related_name="events")
+    from_status = models.CharField(max_length=16, choices=Booking.Status.choices, blank=True)
+    to_status = models.CharField(max_length=16, choices=Booking.Status.choices)
+    note = models.TextField(blank=True)
+    actor = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.SET_NULL, null=True, blank=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ("-created_at",)
+
+    def __str__(self) -> str:
+        return f"Booking {self.booking_id}: {self.from_status} -> {self.to_status}"