"""Client agent — read-only tools for the clients table."""

from __future__ import annotations

import json
from typing import Any

from langchain_core.tools import tool

from app.core.ws_context import execute_on_client


@tool
async def list_clients(search: str = "", limit: int = 20) -> str:
    """List clients, optionally filtered by a name/email substring search.

    search: optional substring to match against client name or email.
    limit: max rows to return (default 20).
    """
    filters: dict[str, Any] = {"limit": limit}
    if search:
        filters["search"] = search

    result = await execute_on_client(action="select", table="clients", filters=filters)
    rows = result.get("rows", [])
    if not rows:
        return "No clients found."
    lines = [
        f"- {r.get('name', '?')} (id: {r.get('id')}, email: {r.get('email', '')}, "
        f"company: {r.get('company', '')})"
        for r in rows
    ]
    return f"Found {len(rows)} client(s):\n" + "\n".join(lines)


@tool
async def get_client(id: str) -> str:
    """Get full details for one client by UUID.

    id: the client's UUID.
    """
    if not id:
        return "Client id is required."

    result = await execute_on_client(action="get", table="clients", data={"id": id})
    row = result.get("row") or result.get("rows", [None])[0] if result else None
    if not row:
        return f"Client '{id}' not found."
    return f"Client details:\n{json.dumps(row, ensure_ascii=False, indent=2)}"


CLIENT_TOOLS: list[Any] = [list_clients, get_client]