"""Deprecate backend agent config tables.

The Electron client is now the source of truth for agent configuration
(directory, extract targets, batch interval, custom prompt). Backend keeps
billing checks and trigger/run logs only.

Revision ID: 9a1f2d0b6c7e
Revises: 818478c251dc
Create Date: 2026-03-16
"""

from __future__ import annotations

from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import postgresql

revision: str = "9a1f2d0b6c7e"
down_revision: Union[str, None] = "818478c251dc"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    bind = op.get_bind()
    inspector = sa.inspect(bind)
    existing = set(inspector.get_table_names())

    if "cloud_agent_configs" in existing:
        op.drop_index("ix_cloud_agent_configs_user_id", table_name="cloud_agent_configs")
        op.drop_table("cloud_agent_configs")

    if "local_agent_configs" in existing:
        op.drop_index("ix_local_agent_configs_user_id", table_name="local_agent_configs")
        op.drop_table("local_agent_configs")


def downgrade() -> None:
    op.create_table(
        "local_agent_configs",
        sa.Column("id", postgresql.UUID(as_uuid=False), nullable=False),
        sa.Column("user_id", postgresql.UUID(as_uuid=False), nullable=False),
        sa.Column("device_id", sa.String(255), nullable=False),
        sa.Column("name", sa.String(255), nullable=False),
        sa.Column("directory_paths", sa.JSON, nullable=False, server_default="[]"),
        sa.Column("data_types", sa.JSON, nullable=False, server_default="[]"),
        sa.Column("prompt_template", sa.Text, nullable=False, server_default=""),
        sa.Column("file_extensions", sa.JSON, nullable=False, server_default="[]"),
        sa.Column("schedule_cron", sa.String(100), nullable=False, server_default="0 */6 * * *"),
        sa.Column("enabled", sa.Boolean, nullable=False, server_default=sa.true()),
        sa.Column("last_run_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
    )
    op.create_index("ix_local_agent_configs_user_id", "local_agent_configs", ["user_id"])

    op.execute(
        """
        DO $$ BEGIN
            CREATE TYPE cloud_provider AS ENUM ('gmail', 'teams', 'outlook');
        EXCEPTION WHEN duplicate_object THEN NULL;
        END $$;
        """
    )

    op.create_table(
        "cloud_agent_configs",
        sa.Column("id", postgresql.UUID(as_uuid=False), nullable=False),
        sa.Column("user_id", postgresql.UUID(as_uuid=False), nullable=False),
        sa.Column(
            "provider",
            postgresql.ENUM("gmail", "teams", "outlook", name="cloud_provider", create_type=False),
            nullable=False,
        ),
        sa.Column("name", sa.String(255), nullable=False),
        sa.Column("data_types", sa.JSON, nullable=False, server_default="[]"),
        sa.Column("prompt_template", sa.Text, nullable=False, server_default=""),
        sa.Column("oauth_token_encrypted", sa.Text, nullable=True),
        sa.Column("filter_config", sa.JSON, nullable=True),
        sa.Column("schedule_cron", sa.String(100), nullable=False, server_default="0 */6 * * *"),
        sa.Column("enabled", sa.Boolean, nullable=False, server_default=sa.true()),
        sa.Column("last_run_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
    )
    op.create_index("ix_cloud_agent_configs_user_id", "cloud_agent_configs", ["user_id"])