"""auth: users and refresh_tokens

Revision ID: 0001_auth_users
Revises:
Create Date: 2026-06-02

First schema migration: authentication & user management (plan §11 step 3).
Constraint/index names follow the metadata naming convention in
``app.infrastructure.db.base`` so a later ``--autogenerate`` stays a no-op.
"""

from __future__ import annotations

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision: str = "0001_auth_users"
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.Uuid(), nullable=False),
        sa.Column("username", sa.String(length=64), nullable=False),
        sa.Column("password_hash", sa.String(length=255), nullable=False),
        sa.Column("is_superuser", sa.Boolean(), nullable=False),
        sa.Column("is_active", sa.Boolean(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.func.now(),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.func.now(),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id", name=op.f("pk_users")),
    )
    # username is unique=True + index=True -> a single unique index.
    op.create_index(op.f("ix_users_username"), "users", ["username"], unique=True)

    op.create_table(
        "refresh_tokens",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("jti", sa.Uuid(), nullable=False),
        sa.Column("token_hash", sa.String(length=64), nullable=False),
        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("revoked_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(
            ["user_id"],
            ["users.id"],
            name=op.f("fk_refresh_tokens_user_id_users"),
            ondelete="CASCADE",
        ),
        sa.PrimaryKeyConstraint("id", name=op.f("pk_refresh_tokens")),
    )
    op.create_index(op.f("ix_refresh_tokens_user_id"), "refresh_tokens", ["user_id"], unique=False)
    op.create_index(op.f("ix_refresh_tokens_jti"), "refresh_tokens", ["jti"], unique=True)


def downgrade() -> None:
    op.drop_index(op.f("ix_refresh_tokens_jti"), table_name="refresh_tokens")
    op.drop_index(op.f("ix_refresh_tokens_user_id"), table_name="refresh_tokens")
    op.drop_table("refresh_tokens")
    op.drop_index(op.f("ix_users_username"), table_name="users")
    op.drop_table("users")