Add sql migration

migrations/versions/2020_041911_dd911f880b75_.py

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+"""empty message
+
+Revision ID: dd911f880b75
+Revises: 57ef03f3ac34
+Create Date: 2020-04-19 11:14:19.929910
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'dd911f880b75'
+down_revision = '57ef03f3ac34'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('apple_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('expires_date', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('original_transaction_id', sa.String(length=256), nullable=False),
+    sa.Column('receipt_data', sa.Text(), nullable=False),
+    sa.Column('plan', sa.Enum('monthly', 'yearly', name='planenum'), nullable=False),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='cascade'),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('user_id')
+    )
+    op.alter_column('file', 'user_id',
+               existing_type=sa.INTEGER(),
+               nullable=True)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('file', 'user_id',
+               existing_type=sa.INTEGER(),
+               nullable=False)
+    op.drop_table('apple_subscription')
+    # ### end Alembic commands ###