"""双 provider 评论:加美团评论列 + commentary_engine 标识

- commentary_engine 区分"实际写入的 provider 名称"(angel / meituan / "angel,meituan")
- commentary_meituan{_status,_model,_error,_} 4 列

Revision ID: 0004
Revises: 0003
Create Date: 2026-06-12
"""
from __future__ import annotations

from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "0004"
down_revision: Union[str, None] = "0003"
branch_labels = None
depends_on = None


def upgrade() -> None:
    # === articles:加 5 列(4 个 status/model/error + 1 个 content)===
    op.add_column(
        "articles",
        sa.Column("commentary_engine", sa.String(32), nullable=True),
    )
    op.add_column(
        "articles",
        sa.Column(
            "commentary_meituan",
            sa.Text,
            nullable=True,
        ),
    )
    op.add_column(
        "articles",
        sa.Column(
            "commentary_meituan_status",
            sa.String(16),
            nullable=False,
            server_default="n/a",
        ),
    )
    op.add_column(
        "articles",
        sa.Column(
            "commentary_meituan_model",
            sa.String(64),
            nullable=True,
        ),
    )
    op.add_column(
        "articles",
        sa.Column(
            "commentary_meituan_error",
            sa.Text,
            nullable=True,
        ),
    )
    # 旧存量:commentary_status=ok 的文章 → 标记 commentary_engine=angel
    op.execute(
        "UPDATE articles SET commentary_engine = 'angel' "
        "WHERE commentary_status = 'ok' AND commentary_engine IS NULL"
    )

    # === llm_settings:加 6 列(美团 provider 配置)===
    op.add_column(
        "llm_settings",
        sa.Column("meituan_api_key", sa.Text, nullable=False, server_default=""),
    )
    op.add_column(
        "llm_settings",
        sa.Column(
            "meituan_base_url",
            sa.String(255),
            nullable=False,
            server_default="https://api.longcat.chat/openai/v1",
        ),
    )
    op.add_column(
        "llm_settings",
        sa.Column(
            "meituan_chat_model",
            sa.String(64),
            nullable=False,
            server_default="LongCat-2.0-Preview",
        ),
    )
    op.add_column(
        "llm_settings",
        sa.Column(
            "meituan_interval_sec",
            sa.Float,
            nullable=False,
            server_default="2.0",
        ),
    )
    op.add_column(
        "llm_settings",
        sa.Column(
            "meituan_enabled",
            sa.Boolean,
            nullable=False,
            server_default=sa.true(),
        ),
    )
    op.add_column(
        "llm_settings",
        sa.Column("meituan_commentary_prompt", sa.Text, nullable=True),
    )


def downgrade() -> None:
    # 反向顺序很重要(后加的先删)
    op.drop_column("llm_settings", "meituan_commentary_prompt")
    op.drop_column("llm_settings", "meituan_enabled")
    op.drop_column("llm_settings", "meituan_interval_sec")
    op.drop_column("llm_settings", "meituan_chat_model")
    op.drop_column("llm_settings", "meituan_base_url")
    op.drop_column("llm_settings", "meituan_api_key")

    op.drop_column("articles", "commentary_meituan_error")
    op.drop_column("articles", "commentary_meituan_model")
    op.drop_column("articles", "commentary_meituan_status")
    op.drop_column("articles", "commentary_meituan")
    op.drop_column("articles", "commentary_engine")