"""001_banana_users_tables

Revision ID: 001
Revises:
Create Date: 2026-06-09
Alembic 001: 从 banana 搬 3 张表（users/login_records/user_preferences）
删除 credits 字段，其余无改。
"""

from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "001"
down_revision: Union[str, None] = None
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.BigInteger(), autoincrement=True, nullable=False),
        sa.Column("username", sa.String(64), nullable=False),
        sa.Column("email", sa.String(255), nullable=False),
        sa.Column("hashed_password", sa.String(255), nullable=False),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default="1"),
        sa.Column("created_at", sa.DateTime(), server_default=sa.text("now()"), nullable=False),
        sa.Column("updated_at", sa.DateTime(), server_default=sa.text("now()"), nullable=False),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("username"),
        sa.UniqueConstraint("email"),
    )

    op.create_table(
        "login_records",
        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("ip_address", sa.String(64), nullable=True),
        sa.Column("user_agent", sa.String(512), nullable=True),
        sa.Column("created_at", sa.DateTime(), server_default=sa.text("now()"), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("idx_login_records_user_id", "login_records", ["user_id"])

    op.create_table(
        "user_preferences",
        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("preferences_json", sa.Text(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), server_default=sa.text("now()"), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("user_id"),
    )


def downgrade() -> None:
    op.drop_table("user_preferences")
    op.drop_index("idx_login_records_user_id", "login_records")
    op.drop_table("login_records")
    op.drop_table("users")