2.0+ public access setup

migrations/versions/0002_league_public_key.py

@@ -0,0 +1,52 @@
+"""add league public key
+
+Revision ID: 0002_league_public_key
+Revises: 0001_public_foundation
+Create Date: 2026-06-23
+"""
+from __future__ import annotations
+
+import secrets
+import string
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "0002_league_public_key"
+down_revision = "0001_public_foundation"
+branch_labels = None
+depends_on = None
+
+ALPHABET = string.ascii_lowercase + string.digits
+
+
+def _key(existing: set[str], length: int = 6) -> str:
+    while True:
+        value = "".join(secrets.choice(ALPHABET) for _ in range(length))
+        if value not in existing:
+            existing.add(value)
+            return value
+
+
+def upgrade() -> None:
+    op.add_column("leagues", sa.Column("public_key", sa.String(length=12), nullable=True))
+
+    bind = op.get_bind()
+    rows = bind.execute(sa.text("SELECT id FROM leagues")).mappings().all()
+    existing: set[str] = set()
+    for row in rows:
+        bind.execute(
+            sa.text("UPDATE leagues SET public_key = :public_key WHERE id = :id"),
+            {"public_key": _key(existing), "id": row["id"]},
+        )
+
+    with op.batch_alter_table("leagues") as batch_op:
+        batch_op.alter_column("public_key", existing_type=sa.String(length=12), nullable=False)
+        batch_op.create_index("ix_leagues_public_key", ["public_key"], unique=True)
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("leagues") as batch_op:
+        batch_op.drop_index("ix_leagues_public_key")
+        batch_op.drop_column("public_key")