"""initial: users + invites

Revision ID: 0001_initial
Revises:
Create Date: 2026-08-04
"""
from __future__ import annotations

from collections.abc import Sequence

import sqlalchemy as sa

from alembic import op

revision: str = "0001_initial"
down_revision: str | None = None
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "users",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("external_username", sa.String(120), nullable=False),
        sa.Column("email", sa.String(320), nullable=False, server_default=""),
        sa.Column("display_name", sa.String(160), nullable=False, server_default=""),
        # Default-deny: an account exists before it is admitted.
        sa.Column("role", sa.String(32), nullable=False, server_default="none"),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.Column("last_login_at", sa.DateTime(timezone=True), nullable=True),
        sa.UniqueConstraint("external_username", name="uq_users_external_username"),
    )
    op.create_index("ix_users_role", "users", ["role"])

    op.create_table(
        "invites",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("email", sa.String(320), nullable=False),
        sa.Column("role", sa.String(32), nullable=False, server_default="user"),
        sa.Column("note", sa.Text(), nullable=False, server_default=""),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.Column("redeemed_at", sa.DateTime(timezone=True), nullable=True),
        sa.UniqueConstraint("email", name="uq_invites_email"),
    )


def downgrade() -> None:
    op.drop_table("invites")
    op.drop_index("ix_users_role", table_name="users")
    op.drop_table("users")