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alembic/versions/004_create_card_keys_table.py

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+"""create card_keys table
+
+Revision ID: 004
+Revises: 003
+Create Date: 2026-05-16
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "004"
+down_revision: Union[str, None] = "003"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "card_keys",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("serial_number", sa.String(length=64), nullable=False),
+        sa.Column("duration_days", sa.Integer(), nullable=False),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("CURRENT_TIMESTAMP"),
+            nullable=False,
+        ),
+        sa.Column("activated_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("user_id", sa.Integer(), nullable=True),
+        sa.Column("username", sa.String(length=64), nullable=True),
+        sa.Column("remark", sa.String(length=255), nullable=True),
+        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="SET NULL"),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(
+        op.f("ix_card_keys_serial_number"), "card_keys", ["serial_number"], unique=True
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(op.f("ix_card_keys_serial_number"), table_name="card_keys")
+    op.drop_table("card_keys")