- Added PricingPlan Model

- Implement a complete cycle for buying a Matrix Chat Host
- Refactor the Payement cycle and stripe related methods

uncloud_pay/migrations/0018_payment.py

@@ -0,0 +1,30 @@
+# Generated by Django 3.2.4 on 2021-07-06 17:47
+
+from django.conf import settings
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('uncloud_pay', '0017_auto_20210706_1728'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Payment',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('amount', models.DecimalField(decimal_places=2, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
+                ('source', models.CharField(choices=[('wire', 'Wire Transfer'), ('stripe', 'Stripe'), ('voucher', 'Voucher'), ('referral', 'Referral')], max_length=256)),
+                ('timestamp', models.DateTimeField(default=django.utils.timezone.now)),
+                ('currency', models.CharField(choices=[('CHF', 'Swiss Franc')], default='CHF', max_length=32)),
+                ('external_reference', models.CharField(blank=True, default='', max_length=256, null=True)),
+                ('owner', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]