from __future__ import annotations

import os
import sys
from pathlib import Path
from typing import Any

from fastapi import FastAPI

PLUGIN_DIR = Path(__file__).resolve().parent / "dedupe" / "mcp_output" / "mcp_plugin"
if str(PLUGIN_DIR) not in sys.path:
    sys.path.insert(0, str(PLUGIN_DIR))

app = FastAPI(title="dedupe MCP helper app")


@app.get("/")
def root() -> dict[str, Any]:
    return {
        "service": "dedupe-mcp",
        "description": "Supplementary info app for local development.",
        "mcp_entrypoint": "dedupe/mcp_output/start_mcp.py",
        "default_port": int(os.getenv("PORT", "7860")),
    }


@app.get("/health")
def health() -> dict[str, str]:
    return {"status": "healthy"}


@app.get("/tools")
def tools() -> dict[str, Any]:
    try:
        from mcp_service import create_app

        mcp = create_app()
        raw_tools = getattr(mcp, "tools", None)

        tool_items: list[Any]
        if isinstance(raw_tools, dict):
            tool_items = list(raw_tools.values())
        elif isinstance(raw_tools, list):
            tool_items = raw_tools
        else:
            tool_items = []

        tools_payload = []
        for tool in tool_items:
            name = getattr(tool, "name", None)
            description = getattr(tool, "description", None)
            if isinstance(tool, dict):
                name = tool.get("name", name)
                description = tool.get("description", description)
            tools_payload.append({"name": name, "description": description})

        return {"count": len(tools_payload), "tools": tools_payload}
    except Exception as exc:
        return {"count": 0, "tools": [], "error": str(exc)}