/**
 * ERP MCPlet (内部システム)
 * pool: なし (pool-less) | mcpletType: read | visibility: [model]
 */
import { MCPletServer } from '../../mcplet-server.js';

const MOCK_SERVICE_URL = process.env.MOCK_SERVICE_URL ?? 'http://localhost:5100';

const server = new MCPletServer('erp-mcplet');

server.registerTool({
  name: 'query_erp',
  description: 'ERPシステムから在庫・発注情報を取得します。商品在庫確認や調達状況の把握に使用します。',
  inputSchema: {
    type: 'object',
    properties: {
      entity: {
        type: 'string',
        enum: ['inventory', 'orders'],
        description: '取得するエンティティ種別',
      },
      item: {
        type: 'string',
        description: '商品カテゴリ (例: dessert, drink)',
      },
    },
    required: ['entity'],
  },
  mcpletType: 'read',
  visibility: ['model'],
  handler: async (args) => {
    const entity = args['entity'] as string;
    const item = args['item'] as string | undefined;

    if (entity === 'inventory') {
      const qs = item ? `?item=${encodeURIComponent(item)}` : '';
      const res = await fetch(`${MOCK_SERVICE_URL}/erp/inventory${qs}`);
      if (!res.ok) throw new Error(`ERP API returned ${res.status}`);
      return res.json();
    }

    return { entity, message: 'Mock ERP orders data' };
  },
});

await server.listen();