#!/usr/bin/env node
// hd-commerce MCP-Server (stdio).
// Spricht die token-gesicherte Admin-API (/api/admin) an.
// ENV: HDC_BASE_URL (z.B. https://shop.example.com), HDC_API_TOKEN.
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { CallToolRequestSchema, ListToolsRequestSchema } from '@modelcontextprotocol/sdk/types.js';

const BASE = (process.env.HDC_BASE_URL || 'http://localhost:4321').replace(/\/+$/, '');
const TOKEN = process.env.HDC_API_TOKEN || '';

async function api(method, path, body) {
  const res = await fetch(BASE + path, {
    method,
    headers: { 'Authorization': 'Bearer ' + TOKEN, 'Content-Type': 'application/json' },
    body: body !== undefined ? JSON.stringify(body) : undefined,
  });
  const text = await res.text();
  let data; try { data = JSON.parse(text); } catch { data = text; }
  if (!res.ok) throw new Error('API ' + res.status + ': ' + (data && data.error ? data.error : text));
  return data;
}

const TOOLS = [
  { name: 'list_products', description: 'Alle Produkte auflisten.', inputSchema: { type: 'object', properties: {} } },
  { name: 'get_product', description: 'Ein Produkt per ID oder Slug holen.', inputSchema: { type: 'object', properties: { id: { type: 'string', description: 'Produkt-ID' } }, required: ['id'] } },
  { name: 'upsert_product', description: 'Produkt anlegen/aktualisieren. Mit id oder slug => Update, sonst Create. Preis in Cent (priceCents).', inputSchema: { type: 'object', properties: { product: { type: 'object', description: 'Produktfelder: name, slug, priceCents, category, desc, cardImage, images[], stock, featured, badge, sizes[], features[]' } }, required: ['product'] } },
  { name: 'delete_product', description: 'Produkt löschen (per ID).', inputSchema: { type: 'object', properties: { id: { type: 'string' } }, required: ['id'] } },
  { name: 'list_pages', description: 'Alle Seiten auflisten.', inputSchema: { type: 'object', properties: {} } },
  { name: 'get_page', description: 'Seite per ID oder Slug (inkl. blocks).', inputSchema: { type: 'object', properties: { id: { type: 'string' } }, required: ['id'] } },
  { name: 'create_page', description: 'Neue Seite anlegen (slug, title, body, type, blocks[]).', inputSchema: { type: 'object', properties: { page: { type: 'object' } }, required: ['page'] } },
  { name: 'update_page_blocks', description: 'Block-Array einer Seite setzen (Visual-Builder-Struktur).', inputSchema: { type: 'object', properties: { id: { type: 'string' }, blocks: { type: 'array' } }, required: ['id', 'blocks'] } },
  { name: 'list_orders', description: 'Bestellungen auflisten (nur lesen).', inputSchema: { type: 'object', properties: {} } },
  { name: 'list_slides', description: 'Slider-Slides auflisten.', inputSchema: { type: 'object', properties: {} } },
  { name: 'upsert_slide', description: 'Slide anlegen/aktualisieren.', inputSchema: { type: 'object', properties: { slide: { type: 'object' } }, required: ['slide'] } },
  { name: 'list_discounts', description: 'Alle Rabatte/Gutscheine auflisten.', inputSchema: { type: 'object', properties: {} } },
  { name: 'upsert_discount', description: 'Rabatt anlegen/aktualisieren. Mit id oder code => Update, sonst Create. type: percent|fixed|freeshipping; value bei percent 1-100, bei fixed in Cent.', inputSchema: { type: 'object', properties: { discount: { type: 'object', description: 'Felder: code, title, type, value, min_order_cents, starts_at, expires_at, max_uses, max_per_customer, active, secret, auto' } }, required: ['discount'] } },
  { name: 'delete_discount', description: 'Rabatt löschen (per ID).', inputSchema: { type: 'object', properties: { id: { type: 'string' } }, required: ['id'] } },
  { name: 'get_settings', description: 'Shop-Einstellungen (Key/Value) holen.', inputSchema: { type: 'object', properties: {} } },
  { name: 'update_settings', description: 'Shop-Einstellungen aktualisieren (Key/Value-Map, z.B. shop_name, brand_accent).', inputSchema: { type: 'object', properties: { settings: { type: 'object' } }, required: ['settings'] } },
  { name: 'get_manifest', description: 'API-Manifest (alle Ressourcen, Felder, Block-Typen).', inputSchema: { type: 'object', properties: {} } },
];

const server = new Server({ name: 'hd-commerce', version: '2.1.0' }, { capabilities: { tools: {} } });
server.setRequestHandler(ListToolsRequestSchema, async () => ({ tools: TOOLS }));

server.setRequestHandler(CallToolRequestSchema, async (req) => {
  const { name, arguments: a = {} } = req.params;
  let out;
  try {
    switch (name) {
      case 'list_products': out = await api('GET', '/api/admin/products'); break;
      case 'get_product': out = await api('GET', '/api/admin/products/' + encodeURIComponent(a.id)); break;
      case 'upsert_product': out = await api('POST', '/api/admin/products', a.product); break;
      case 'delete_product': out = await api('DELETE', '/api/admin/products/' + encodeURIComponent(a.id)); break;
      case 'list_pages': out = await api('GET', '/api/admin/pages'); break;
      case 'get_page': out = await api('GET', '/api/admin/pages/' + encodeURIComponent(a.id)); break;
      case 'create_page': out = await api('POST', '/api/admin/pages', a.page); break;
      case 'update_page_blocks': out = await api('POST', '/api/admin/pages/' + encodeURIComponent(a.id) + '/blocks', { blocks: a.blocks }); break;
      case 'list_orders': out = await api('GET', '/api/admin/orders'); break;
      case 'list_slides': out = await api('GET', '/api/admin/slides'); break;
      case 'upsert_slide': out = await api('POST', '/api/admin/slides', a.slide); break;
      case 'list_discounts': out = await api('GET', '/api/admin/discounts'); break;
      case 'upsert_discount': out = await api('POST', '/api/admin/discounts', a.discount); break;
      case 'delete_discount': out = await api('DELETE', '/api/admin/discounts/' + encodeURIComponent(a.id)); break;
      case 'get_settings': out = await api('GET', '/api/admin/settings'); break;
      case 'update_settings': out = await api('POST', '/api/admin/settings', a.settings); break;
      case 'get_manifest': out = await api('GET', '/api/admin'); break;
      default: throw new Error('Unbekanntes Tool: ' + name);
    }
    return { content: [{ type: 'text', text: JSON.stringify(out, null, 2) }] };
  } catch (e) {
    return { content: [{ type: 'text', text: 'Fehler: ' + (e && e.message || e) }], isError: true };
  }
});

async function main() {
  if (!TOKEN) console.error('[hd-commerce-mcp] Warnung: HDC_API_TOKEN ist nicht gesetzt.');
  const transport = new StdioServerTransport();
  await server.connect(transport);
  console.error('[hd-commerce-mcp] bereit. Base: ' + BASE);
}
main().catch((e) => { console.error(e); process.exit(1); });