Create CoinbaseSubscription model

app/models.py

@@ -1434,6 +1434,26 @@ class ManualSubscription(db.Model, ModelMixin):
 
     user = db.relationship(User)
 
+class CoinbaseSubscription(db.Model, ModelMixin):
+    """
+    For subscriptions using Coinbase Commerce
+    """
+
+    user_id = db.Column(
+        db.ForeignKey(User.id, ondelete="cascade"), nullable=False, unique=True
+    )
+
+    # an reminder is sent several days before the subscription ends
+    end_at = db.Column(ArrowType, nullable=False)
+
+    # the Coinbase code
+    code = db.Column(db.String(64), nullable=True)
+
+    user = db.relationship(User)
+
+    def is_active(self):
+        return self.end_at > arrow.now()
+
 
 # https://help.apple.com/app-store-connect/#/dev58bda3212
 _APPLE_GRACE_PERIOD_DAYS = 16

migrations/versions/2020_121319_a20aeb9b0eac_.py

@@ -0,0 +1,39 @@
+"""empty message
+
+Revision ID: a20aeb9b0eac
+Revises: 780a8344914b
+Create Date: 2020-12-13 19:04:46.771429
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'a20aeb9b0eac'
+down_revision = '780a8344914b'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('coinbase_subscription',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.Column('user_id', sa.Integer(), nullable=False),
+    sa.Column('end_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('code', sa.String(length=64), nullable=True),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='cascade'),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('user_id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('coinbase_subscription')
+    # ### end Alembic commands ###