#!/usr/bin/env bash

set -euo pipefail

if [[ -z "${MCP_URL:-}" || -z "${MCP_TOKEN:-}" ]]; then
  echo "Usage: MCP_URL=https://forum.example.com/mcp MCP_TOKEN=... $0" >&2
  exit 1
fi

workdir="$(mktemp -d)"
trap 'rm -rf "$workdir"' EXIT

cat >"$workdir/package.json" <<'JSON'
{"private":true,"type":"module"}
JSON
pnpm --dir "$workdir" add --silent @modelcontextprotocol/client@2.0.0

cat >"$workdir/client.mjs" <<'JAVASCRIPT'
import {
  Client,
  StreamableHTTPClientTransport,
} from "@modelcontextprotocol/client";

const client = new Client(
  { name: "discourse-mcp-interoperability", version: "1.0.0" },
  { versionNegotiation: { mode: { pin: "2026-07-28" } } }
);
const transport = new StreamableHTTPClientTransport(new URL(process.env.MCP_URL), {
  requestInit: { headers: { Authorization: `Bearer ${process.env.MCP_TOKEN}` } },
});

await client.connect(transport);
const tools = await client.listTools();
const currentUser = await client.callTool({
  name: "discourse_current_user_get",
  arguments: {},
});
const resourceTemplates = await client.listResourceTemplates();
const prompts = await client.listPrompts();

console.log(
  JSON.stringify(
    {
      era: client.getProtocolEra(),
      tools: tools.tools.map((tool) => tool.name),
      currentUser: currentUser.structuredContent,
      resourceTemplates: resourceTemplates.resourceTemplates.map(
        (resource) => resource.uriTemplate
      ),
      prompts: prompts.prompts.map((prompt) => prompt.name),
    },
    null,
    2
  )
);
await client.close();
JAVASCRIPT

node "$workdir/client.mjs"