Merge pull request #2 from GoogleChromeLabs/demos/add-react-flightsearch

Adds the React Flight Search demo

Author: andreban

demos/react-flightsearch/.gitignore

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+node_modules
+dist

demos/react-flightsearch/LICENSE

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demos/react-flightsearch/README.md

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+# Travel WebMCP Demo
+
+A React-based flight search application designed to demonstrate **WebMCP** integration. This project showcases how a web application can expose structured tools to an AI agent or automation layer, allowing it to programmatically interact with the UI (searching flights, applying filters, reading results) via a standardized interface.
+
+## 🚀 Key Features
+
+- **Flight Search**: Search for flights by origin, destination, dates, and passengers.
+- **Interactive Results**: View flight results with detailed pricing and duration information.
+- **Advanced Filtering**: Filter results by price range, airlines, stops, and departure/arrival times.
+- **WebMCP Integration**: Built-in support for `navigator.modelContext` to register tools for AI agents.
+
+## 🛠️ Technology Stack
+
+- **Framework**: [React](https://react.dev/) + [Vite](https://vitejs.dev/)
+- **Language**: [TypeScript](https://www.typescriptlang.org/)
+- **Routing**: [React Router](https://reactrouter.com/)
+- **Styling**: CSS Modules / Vanilla CSS
+- **Components**: Custom components + `rc-slider` for range inputs
+
+## 🤖 Agent / WebMCP Integration
+
+This application is instrumented to work with an AI agent (e.g., via a browser extension or specialized browser). It detects the presence of `navigator.modelContext` and registers the following tools:
+
+1.  **`searchFlights`**: Initiates a flight search with structured parameters (origin, destination, date, etc.).
+2.  **`listFlights`**: Retrieves the currently displayed list of flights (programmatic access to data).
+3.  **`setFilters`**: Applies complex filters (price ranges, specific airlines, time windows) to the results.
+4.  **`resetFilters`**: Clears all active filters.
+
+### How it Works
+
+The application defines a schema for each tool (input/output) and "registers" them using `modelContext.registerTool()`. When the agent invokes a tool, the application executes the corresponding function (e.g., dispatching a custom event to update the React state), bridging the gap between the AI model and the React UI.
+
+See [`src/webmcp.ts`](src/webmcp.ts) for the implementation details.
+
+## 📦 Installation & Usage
+
+1.  **Clone the repository**
+
+    ```bash
+    git clone <repository-url>
+    cd travel-script-tools-demo
+    ```
+
+2.  **Install dependencies**
+
+    ```bash
+    npm install
+    ```
+
+3.  **Run the development server**
+
+    ```bash
+    npm run dev
+    ```
+
+    The app will start at `http://localhost:5173` (or similar).
+
+4.  **Build for production**
+    ```bash
+    npm run build
+    ```

demos/react-flightsearch/eslint.config.js

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+/**
+ * Copyright 2026 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import js from "@eslint/js";
+import globals from "globals";
+import reactHooks from "eslint-plugin-react-hooks";
+import reactRefresh from "eslint-plugin-react-refresh";
+import tseslint from "typescript-eslint";
+import { globalIgnores } from "eslint/config";
+
+export default tseslint.config([
+  globalIgnores(["dist"]),
+  {
+    files: ["**/*.{ts,tsx}"],
+    extends: [
+      js.configs.recommended,
+      tseslint.configs.recommended,
+      reactHooks.configs["recommended-latest"],
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+  },
+]);

demos/react-flightsearch/generateFlights.js

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+/**
+ * Copyright 2026 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const airlines = [
+  { name: "Spirit Airlines", code: "NK" },
+  { name: "Southwest Airlines", code: "WN" },
+  { name: "American Airlines", code: "AA" },
+  { name: "JetBlue Airways", code: "B6" },
+  { name: "United Airlines", code: "UA" },
+  { name: "Delta Air Lines", code: "DL" },
+  { name: "Alaska Airlines", code: "AS" },
+  { name: "Frontier Airlines", code: "F9" },
+];
+const originAirports = ["LHR", "LGW", "STN", "LTN"];
+const destinationAirports = ["JFK", "LGA", "EWR"];
+
+function getRandomElement(arr) {
+  return arr[Math.floor(Math.random() * arr.length)];
+}
+
+function getRandomTime() {
+  const hour = String(Math.floor(Math.random() * 24)).padStart(2, "0");
+  const minute = String(Math.floor(Math.random() * 60)).padStart(2, "0");
+  return `${hour}:${minute}`;
+}
+
+function formatDuration(departure, arrival) {
+  const dep = new Date(`1970-01-01T${departure}:00`);
+  const arr = new Date(`1970-01-01T${arrival}:00`);
+  let diff = arr.getTime() - dep.getTime();
+  if (diff < 0) {
+    diff += 24 * 60 * 60 * 1000;
+  }
+  const hours = Math.floor(diff / (1000 * 60 * 60));
+  const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
+  return `${hours}h ${minutes}m`;
+}
+
+const flights = [];
+for (let i = 7; i <= 106; i++) {
+  const departureTime = getRandomTime();
+  const arrivalTime = getRandomTime();
+  const airline = getRandomElement(airlines);
+  flights.push({
+    id: i,
+    airline: airline.name,
+    airlineCode: airline.code,
+    origin: getRandomElement(originAirports),
+    destination: getRandomElement(destinationAirports),
+    departureTime,
+    arrivalTime,
+    duration: formatDuration(departureTime, arrivalTime),
+    stops: Math.floor(Math.random() * 3),
+    price: Math.floor(Math.random() * 800) + 200,
+  });
+}
+
+console.log(JSON.stringify(flights, null, 2));

demos/react-flightsearch/index.html

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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>WebMCP Travel</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>