"""add users, refresh_tokens, activity_log; FK existing tables to users

Revision ID: 002
Revises: 001
Create Date: 2026-05-27

The Phase 1-3 schema from the OAuth plan, adapted to this repo's existing
tables. SQLite doesn't enforce FK constraints by default but the columns
and indexes are still useful for query planning.
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "002"
down_revision: Union[str, None] = "001"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "users",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column("email", sa.String(), nullable=False, unique=True),
        sa.Column("display_name", sa.String(), nullable=False),
        sa.Column("avatar_url", sa.String(), nullable=True),
        sa.Column("google_id", sa.String(), nullable=True, unique=True),
        sa.Column(
            "role",
            sa.String(),
            nullable=False,
            server_default=sa.text("'user'"),
        ),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("last_login_at", sa.DateTime(), nullable=True),
    )

    op.create_table(
        "refresh_tokens",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column(
            "user_id",
            sa.String(),
            sa.ForeignKey("users.id"),
            nullable=False,
        ),
        sa.Column("token_hash", sa.String(), nullable=False, unique=True),
        sa.Column("device", sa.String(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("expires_at", sa.DateTime(), nullable=False),
        sa.Column("revoked_at", sa.DateTime(), nullable=True),
    )
    op.create_index(
        "ix_refresh_tokens_user_id", "refresh_tokens", ["user_id"]
    )

    op.create_table(
        "activity_log",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column(
            "user_id",
            sa.String(),
            sa.ForeignKey("users.id"),
            nullable=False,
        ),
        sa.Column("action", sa.String(), nullable=False),
        sa.Column("resource", sa.String(), nullable=False),
        sa.Column("resource_id", sa.String(), nullable=True),
        sa.Column("metadata_json", sa.Text(), nullable=True),
        sa.Column(
            "source",
            sa.String(),
            nullable=False,
            server_default=sa.text("'web'"),
        ),
        sa.Column("ip_address", sa.String(), nullable=True),
        sa.Column("user_agent", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
    )
    op.create_index(
        "ix_activity_log_user_id", "activity_log", ["user_id"]
    )
    op.create_index(
        "ix_activity_log_created_at", "activity_log", ["created_at"]
    )
    op.create_index(
        "ix_activity_log_resource",
        "activity_log",
        ["resource", "resource_id"],
    )


def downgrade() -> None:
    op.drop_index("ix_activity_log_resource", table_name="activity_log")
    op.drop_index("ix_activity_log_created_at", table_name="activity_log")
    op.drop_index("ix_activity_log_user_id", table_name="activity_log")
    op.drop_table("activity_log")

    op.drop_index("ix_refresh_tokens_user_id", table_name="refresh_tokens")
    op.drop_table("refresh_tokens")

    op.drop_table("users")