"""add MCP server connections and discovered tools

Revision ID: 20260717_0008
Revises: 20260712_0007
"""

from collections.abc import Sequence

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


revision: str = "20260717_0008"
down_revision: str | Sequence[str] | None = "20260712_0007"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "mcp_servers",
        sa.Column("id", sa.String(length=40), nullable=False),
        sa.Column("name", sa.String(length=128), nullable=False),
        sa.Column(
            "description",
            sa.String(length=2048),
            server_default="",
            nullable=False,
        ),
        sa.Column(
            "transport",
            sa.String(length=32),
            server_default="streamable_http",
            nullable=False,
        ),
        sa.Column("url", sa.String(length=2048), nullable=False),
        sa.Column(
            "config",
            postgresql.JSONB(astext_type=sa.Text()),
            server_default=sa.text("'{}'::jsonb"),
            nullable=False,
        ),
        sa.Column(
            "secrets",
            postgresql.JSONB(astext_type=sa.Text()),
            server_default=sa.text("'{}'::jsonb"),
            nullable=False,
        ),
        sa.Column(
            "status",
            sa.String(length=16),
            server_default="active",
            nullable=False,
        ),
        sa.Column("last_synced_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_mcp_servers_status", "mcp_servers", ["status"])
    op.add_column(
        "tools",
        sa.Column("mcp_server_id", sa.String(length=40), nullable=True),
    )
    op.add_column(
        "tools",
        sa.Column("remote_tool_name", sa.String(length=255), nullable=True),
    )
    op.create_index("ix_tools_mcp_server_id", "tools", ["mcp_server_id"])
    op.create_foreign_key(
        "fk_tools_mcp_server_id",
        "tools",
        "mcp_servers",
        ["mcp_server_id"],
        ["id"],
        ondelete="CASCADE",
    )
    op.create_unique_constraint(
        "uq_tools_mcp_server_remote_name",
        "tools",
        ["mcp_server_id", "remote_tool_name"],
    )


def downgrade() -> None:
    op.drop_constraint(
        "uq_tools_mcp_server_remote_name",
        "tools",
        type_="unique",
    )
    op.drop_constraint("fk_tools_mcp_server_id", "tools", type_="foreignkey")
    op.drop_index("ix_tools_mcp_server_id", table_name="tools")
    op.drop_column("tools", "remote_tool_name")
    op.drop_column("tools", "mcp_server_id")
    op.drop_index("ix_mcp_servers_status", table_name="mcp_servers")
    op.drop_table("mcp_servers")