[uncloud_pay] add "prototype"

uncloud/uncloud_pay/models.py

@@ -0,0 +1,91 @@
+from django.db import models
+from django.contrib.auth import get_user_model
+
+# Create your models here.
+
+
+class Bill(models.Model):
+    owner = models.ForeignKey(get_user_model(),
+            on_delete=models.CASCADE,
+            editable=False)
+
+    creation_date = models.DateTimeField()
+    starting_date = models.DateTimeField()
+    ending_date = models.DateTimeField()
+    due_date = models.DateField()
+
+    paid = models.BooleanField(default=False)
+    valid = models.BooleanField(default=True)
+
+    @property
+    def amount(self):
+        # iterate over all related orders
+        pass
+
+
+class Order(models.Model):
+    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    owner = models.ForeignKey(get_user_model(),
+                              on_delete=models.CASCADE,
+                              editable=False)
+
+    creation_date = models.DateTimeField()
+    starting_date = models.DateTimeField()
+    ending_date = models.DateTimeField(blank=True,
+                                       null=True)
+
+    bill = models.ManyToManyField(Bill,
+                                  on_delete=models.CASCADE,
+                                  editable=False,
+                                  blank=True,
+                                  null=True)
+
+
+    recurring_price = models.FloatField(editable=False)
+    one_time_price = models.FloatField(editable=False)
+
+    recurring_period = models.CharField(max_length=32,
+                              choices = (
+                                  ('onetime', 'Onetime'),
+                                  ('per_year', 'Per Year'),
+                                  ('per_month', 'Per Month'),
+                                  ('per_week', 'Per Week'),
+                                  ('per_day', 'Per Day'),
+                                  ('per_hour', 'Per Hour'),
+                                  ('per_minute', 'Per Minute'),
+                                  ('per_second', 'Per Second'),
+                              ),
+                              default='onetime'
+
+    )
+
+    # def amount(self):
+    #     amount = recurring_price
+    #     if recurring and first_month:
+    #         amount += one_time_price
+
+    #     return amount # you get the picture
+
+
+
+class Payment(models.Model):
+    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+
+    owner = models.ForeignKey(get_user_model(),
+            on_delete=models.CASCADE,
+            editable=False)
+
+    amount = models.DecimalField(
+            default=0.0,
+            validators=[MinValueValidator(0)])
+
+    source = models.CharField(max_length=256,
+                              choices = (
+                                  ('wire', 'Wire Transfer'),
+                                  ('strip', 'Stripe'),
+                                  ('voucher', 'Voucher'),
+                                  ('referral', 'Referral'),
+                                  ('unknown', 'Unknown')
+                              ),
+                              default='unknown')
+    timestamp = models.DateTimeField(editable=False)