import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import { widget } from "@smithery/sdk/openai";
import type { MapState, SearchParams } from "../shared/types.js";
import { coffeeShops } from "./data.js";
export default function createServer() {
const server = new McpServer({
name: "Coffee Explorer",
version: "1.0.0",
});
const coffeeMap = widget.resource<MapState>({
name: "coffee-map",
description: "Discover specialty coffee shops across Singapore",
prefersBorder: false,
csp: {
connect_domains: [
"https://api.mapbox.com",
"https://events.mapbox.com",
"https://*.tiles.mapbox.com"
],
resource_domains: [
"https://api.mapbox.com",
"https://*.tiles.mapbox.com",
"https://unpkg.com"
]
},
cssURLs: "https://unpkg.com/mapbox-gl@3.1.0/dist/mapbox-gl.css",
});
server.registerResource(
coffeeMap.name,
coffeeMap.uri,
{},
coffeeMap.handler
);
server.registerTool(
"search-coffee-shops",
{
title: "Search Coffee Shops",
description: "Find specialty coffee shops in Singapore with optional filters",
inputSchema: {
neighborhood: z.string().optional().describe("Filter by neighborhood (e.g., Tiong Bahru, Haji Lane)"),
maxPrice: z.enum(["$", "$$", "$$$"]).optional().describe("Maximum price range"),
minRating: z.number().min(1).max(5).optional().describe("Minimum rating (1-5)"),
vibe: z.string().optional().describe("Filter by vibe (e.g., Cozy, Minimalist, Japanese)"),
},
_meta: coffeeMap.toolConfig({
invoking: "Finding great coffee spots...",
invoked: "Found coffee shops!",
}),
},
async (args) => {
const params = args as SearchParams;
let results = [...coffeeShops];
if (params.neighborhood) {
results = results.filter(shop =>
shop.neighborhood.toLowerCase().includes(params.neighborhood!.toLowerCase())
);
}
if (params.maxPrice) {
const priceOrder = { "$": 1, "$$": 2, "$$$": 3 };
results = results.filter(shop =>
priceOrder[shop.priceRange] <= priceOrder[params.maxPrice!]
);
}
if (params.minRating) {
results = results.filter(shop => shop.rating >= params.minRating!);
}
if (params.vibe) {
results = results.filter(shop =>
shop.vibe.some(v => v.toLowerCase().includes(params.vibe!.toLowerCase()))
);
}
const structuredData: MapState = {
center: results.length > 0 ? results[0].coords : [103.8198, 1.3521],
zoom: 12,
markers: results.map(shop => shop.coords),
favorites: [],
};
const summary = results.length > 0
? `Found ${results.length} coffee shop${results.length > 1 ? 's' : ''}: ${results.map(s => s.name).join(", ")}`
: "No coffee shops found matching your criteria";
return coffeeMap.response({
structuredData,
message: summary,
meta: {
shops: results,
searchParams: params,
},
});
}
);
server.registerTool(
"get-shop-details",
{
title: "Get Coffee Shop Details",
description: "View detailed information about a specific coffee shop",
inputSchema: {
shopId: z.string().describe("ID of the coffee shop"),
},
_meta: coffeeMap.toolConfig({
invoking: "Getting shop details...",
invoked: "Here's the shop info!",
}),
},
async (args) => {
const shop = coffeeShops.find(s => s.id === args.shopId);
if (!shop) {
return widget.error(`Coffee shop with ID "${args.shopId}" not found`);
}
const structuredData: MapState = {
center: shop.coords,
zoom: 15,
markers: [shop.coords],
favorites: [],
};
return coffeeMap.response({
structuredData,
message: `Showing details for ${shop.name} in ${shop.neighborhood}`,
meta: {
shops: [shop],
selectedShopId: shop.id,
},
});
}
);
server.registerTool(
"explore-all-shops",
{
title: "Explore All Coffee Shops",
description: "View all specialty coffee shops in Singapore on an interactive map",
inputSchema: {},
_meta: coffeeMap.toolConfig({
invoking: "Loading Singapore's best coffee...",
invoked: "Explore away!",
}),
},
async () => {
const structuredData: MapState = {
center: [103.8198, 1.3521],
zoom: 12,
markers: coffeeShops.map(shop => shop.coords),
favorites: [],
};
return coffeeMap.response({
structuredData,
message: `Showing ${coffeeShops.length} specialty coffee shops across Singapore`,
meta: {
shops: coffeeShops,
},
});
}
);
return server.server;
}
