Desi-Clans/backend/alembic/versions/20260404_0009_digital_tickets.py
2026-10-08 02:52:58 +05:30

42 lines
1.4 KiB
Python

"""digital ticket qr tokens and used status
Revision ID: 20260404_0009
Revises: 20260404_0008
"""
import secrets
from typing import Sequence, Union
import sqlalchemy as sa
from alembic import op
revision: str = "20260404_0009"
down_revision: Union[str, None] = "20260404_0008"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
op.execute("ALTER TYPE ticketstatus RENAME VALUE 'redeemed' TO 'used'")
op.add_column("tickets", sa.Column("qr_token", sa.String(length=64), nullable=True))
op.add_column("tickets", sa.Column("used_at", sa.DateTime(timezone=True), nullable=True))
connection = op.get_bind()
rows = connection.execute(sa.text("SELECT id FROM tickets WHERE qr_token IS NULL")).fetchall()
for row in rows:
token = secrets.token_urlsafe(32)
connection.execute(
sa.text("UPDATE tickets SET qr_token = :token WHERE id = :id"),
{"token": token, "id": row.id},
)
op.alter_column("tickets", "qr_token", nullable=False)
op.create_index(op.f("ix_tickets_qr_token"), "tickets", ["qr_token"], unique=True)
def downgrade() -> None:
op.drop_index(op.f("ix_tickets_qr_token"), table_name="tickets")
op.drop_column("tickets", "used_at")
op.drop_column("tickets", "qr_token")
op.execute("ALTER TYPE ticketstatus RENAME VALUE 'used' TO 'redeemed'")