from __future__ import annotations

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

FastAPI = importlib.import_module("fastapi").FastAPI

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

app = FastAPI(title="rebound MCP Info App", version="1.0.0")


def _extract_tools(mcp_app: Any) -> list[dict[str, str]]:
    tools_attr = getattr(mcp_app, "tools", None)
    if tools_attr is None:
        return []

    if isinstance(tools_attr, dict):
        iterable = tools_attr.values()
    elif isinstance(tools_attr, list):
        iterable = tools_attr
    else:
        iterable = list(tools_attr)

    tools: list[dict[str, str]] = []
    for tool in iterable:
        name = getattr(tool, "name", None) or str(tool)
        description = getattr(tool, "description", "") or ""
        tools.append({"name": name, "description": description})
    return tools


@app.get("/")
def root() -> dict[str, Any]:
    return {
        "service": "rebound-mcp",
        "description": "Supplementary info API for local development.",
        "mcp_http_endpoint": "/mcp",
        "note": "This app does not run the MCP server.",
    }


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


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

    mcp_app = create_app()
    return {"tools": _extract_tools(mcp_app)}


if __name__ == "__main__":
    import uvicorn

    port = int(os.getenv("PORT", "7860"))
    uvicorn.run(app, host="0.0.0.0", port=port)