"""user data tables: preferences / watchlist / screener queries

Revision ID: 20260815_02
Revises: 20260815_01
Create Date: 2026-08-15
"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = "20260815_02"
down_revision: Union[str, Sequence[str], None] = "20260815_01"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "user_preferences",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("key", sa.String(length=64), nullable=False),
        sa.Column("value_json", sa.Text(), nullable=False, server_default="null"),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("user_id", "key", name="uq_user_pref_key"),
    )
    op.create_index("ix_user_preferences_user_id", "user_preferences", ["user_id"])

    op.create_table(
        "watchlist_items",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("ts_code", sa.String(length=12), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("user_id", "ts_code", name="uq_watch_user_code"),
    )
    op.create_index("ix_watchlist_items_user_id", "watchlist_items", ["user_id"])
    op.create_index("ix_watchlist_items_ts_code", "watchlist_items", ["ts_code"])

    op.create_table(
        "screener_queries",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("text", sa.String(length=500), nullable=False),
        sa.Column("conditions_json", sa.Text(), nullable=True),
        sa.Column("hit_count", sa.Integer(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_screener_queries_user_id", "screener_queries", ["user_id"])
    op.create_index("ix_screener_queries_created_at", "screener_queries", ["created_at"])


def downgrade() -> None:
    op.drop_index("ix_screener_queries_created_at", table_name="screener_queries")
    op.drop_index("ix_screener_queries_user_id", table_name="screener_queries")
    op.drop_table("screener_queries")
    op.drop_index("ix_watchlist_items_ts_code", table_name="watchlist_items")
    op.drop_index("ix_watchlist_items_user_id", table_name="watchlist_items")
    op.drop_table("watchlist_items")
    op.drop_index("ix_user_preferences_user_id", table_name="user_preferences")
    op.drop_table("user_preferences")