"""drop subscription tables

Revision ID: 202607080900
Revises: 202605080900
Create Date: 2026-07-08 09:00:00
"""

from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa

revision: str = "202607080900"
down_revision: Union[str, None] = "202605080900"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # Agent主路径已经改为模型结构化情报，历史订阅源表从运行模型中移除。
    op.drop_index("ix_raw_items_category", table_name="raw_items")
    op.drop_index("ix_raw_items_subscription_id", table_name="raw_items")
    op.drop_index("ix_raw_items_run_id", table_name="raw_items")
    op.drop_table("raw_items")
    op.drop_table("source_subscriptions")


def downgrade() -> None:
    # 回滚时恢复旧表结构，便于数据库迁移链保持可逆。
    op.create_table(
        "source_subscriptions",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("name", sa.String(length=160), nullable=False, unique=True),
        sa.Column("source_type", sa.String(length=32), nullable=False),
        sa.Column("url", sa.Text(), nullable=False),
        sa.Column("url_hash", sa.String(length=64), nullable=False, unique=True),
        sa.Column("category", sa.String(length=120), nullable=False),
        sa.Column("enabled", sa.Boolean(), nullable=False, server_default=sa.true()),
        sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
    )
    op.create_table(
        "raw_items",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("run_id", sa.Integer(), sa.ForeignKey("agent_runs.id"), nullable=False),
        sa.Column("subscription_id", sa.Integer(), sa.ForeignKey("source_subscriptions.id"), nullable=False),
        sa.Column("title", sa.String(length=300), nullable=False),
        sa.Column("summary", sa.Text(), nullable=False),
        sa.Column("source_url", sa.Text(), nullable=False),
        sa.Column("source_url_hash", sa.String(length=64), nullable=False),
        sa.Column("source_name", sa.String(length=200), nullable=False),
        sa.Column("category", sa.String(length=120), nullable=False),
        sa.Column("published_at", sa.DateTime(), nullable=True),
        sa.Column("raw_payload", sa.JSON(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.UniqueConstraint("source_url_hash", name="uq_raw_items_source_url_hash"),
    )
    op.create_index("ix_raw_items_run_id", "raw_items", ["run_id"])
    op.create_index("ix_raw_items_subscription_id", "raw_items", ["subscription_id"])
    op.create_index("ix_raw_items_category", "raw_items", ["category"])