"""create_invitation_token

Creates the `invitation_token` table that gates platform-level sign-up.
Distinct from Better Auth's `invitation` table (which gates joining an
existing organization).

Schema per `invitation-bootstrap` capability spec:
- id (uuid pk)
- token (text unique not null, url-safe random 32 bytes)
- email (text nullable, optional pre-binding, lowercase normalized)
- created_by (text nullable FK user.id — NULL for CLI-issued tokens)
- used_by (text nullable FK user.id)
- used_at (timestamptz nullable)
- expires_at (timestamptz not null)
- created_at (timestamptz not null default now())

Revision ID: 0029_create_invitation_token
Revises: 0028_add_restaurant_team_fk
Create Date: 2026-05-22 17:32:00.000000
"""

from collections.abc import Sequence

import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

from alembic import op

# revision identifiers, used by Alembic.
revision: str = "0029_create_invitation_token"
down_revision: str | None = "0028_add_restaurant_team_fk"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "invitation_token",
        sa.Column(
            "id",
            postgresql.UUID(as_uuid=True),
            primary_key=True,
            server_default=sa.text("gen_random_uuid()"),
        ),
        sa.Column("token", sa.Text(), nullable=False),
        sa.Column("email", sa.Text(), nullable=True),
        sa.Column("created_by", sa.Text(), nullable=True),
        sa.Column("used_by", sa.Text(), nullable=True),
        sa.Column("used_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.ForeignKeyConstraint(["created_by"], ["user.id"], ondelete="SET NULL"),
        sa.ForeignKeyConstraint(["used_by"], ["user.id"], ondelete="SET NULL"),
    )
    op.create_index(
        "ix_invitation_token_token",
        "invitation_token",
        ["token"],
        unique=True,
    )
    op.create_index(
        "ix_invitation_token_email",
        "invitation_token",
        ["email"],
        unique=False,
    )


def downgrade() -> None:
    op.drop_index("ix_invitation_token_email", table_name="invitation_token")
    op.drop_index("ix_invitation_token_token", table_name="invitation_token")
    op.drop_table("invitation_token")