#!/usr/bin/env python3
"""Render the human-readable MCP list from the single JSON registry."""

from __future__ import annotations

import argparse
import json
import pathlib


ROOT = pathlib.Path(__file__).resolve().parents[2]
REGISTRY = ROOT / "config" / "mcp-registry.json"
OUTPUT = ROOT / "docs" / "MCP_SERVERS.md"


def render() -> str:
    document = json.loads(REGISTRY.read_text(encoding="utf-8"))
    rows = []
    for item in document["servers"]:
        if not item.get("hub"):
            continue
        clients = ", ".join(item.get("clients", [])) or "–"
        selection = str(len(item["tool_include"])) if item.get("tool_include") else "alle"
        rows.append(
            f"| {item['name']} | `{item['hermes_id']}` | `{item['url']}` | "
            f"{clients} | {selection} |"
        )
    return "\n".join([
        "# MCP-Server",
        "",
        "Diese Datei wird aus `config/mcp-registry.json` erzeugt. Änderungen gehören nur in die JSON-Registry.",
        "",
        "| Server | Hermes-ID | Endpunkt | Clients | Werkzeuge |",
        "|---|---|---|---|---:|",
        *rows,
        "",
        "Allgemeine Webrecherche ist ein eingebautes Hermes-Werkzeug und kein MCPHub-Server.",
        "",
    ])


def main() -> None:
    parser = argparse.ArgumentParser()
    parser.add_argument("--check", action="store_true")
    args = parser.parse_args()
    expected = render()
    if args.check:
        if not OUTPUT.is_file() or OUTPUT.read_text(encoding="utf-8") != expected:
            raise SystemExit("MCP registry documentation is out of date")
        print("MCP_REGISTRY_OK")
        return
    OUTPUT.write_text(expected, encoding="utf-8")
    print("MCP_REGISTRY_RENDERED")


if __name__ == "__main__":
    main()