User: Hello. I want you to build a high quality website as a product for a hackathon.
The theme is "Modernise an existing system/process, making it secure and future-ready". 
I am looking to build a *MULTIPLAYER, real time* game.
Here is the idea I have come up with:
### 1. **Strategic Auction Simulator**    - **Overview**: Build an interactive game where users act as government officials managing infrastructure bids. Players must strategize to select contracts based on criteria like budget, quality, sustainability, and vendor reliability.    - **Key Features**: The player must negotiate and choose the most future-ready option.      - **Risk Assessment**: Each company comes with its own risk profile and historical data on contract completion, adding depth to the decision-making process.  - **Future-Proofing**: Players need to predict how contracts may fare with emerging technologies and sustainability requirements.
Additionally, please try to relate the game to a Singaporean context, so just use specific names, etc. No need to overdo it as the game should be fun.
Here is how I want the game to be like. Note that this is based on a Roblox game and you may adapt the gameplay slightly.
✍️In Idiotic Investing with 4 or more players, you are given two pieces of paper to draw two separate topics on! Once every player has submitted their masterpiece, the bidding begins!✍️ 
  💸At the start of every round, each player is given 3,000 credits to bid on other's art pieces. Once a player has successfully bid on a piece of art work, the true value of the piece will be revealed!💸    
💰Short on Credits? You can gain more by auctioning off some of your art pieces or taking a loan from the Blox Bank! Be careful though, at the end of the game you have to pay a 50% interest fee on your loans.💰    
🔩Want to annoy some of your friends? Half way through the round every player 
gains the abilty to screw a player and force them to bid once.🔩   
So, here is a rough procedure:
1. At the start of the game, each player is able to set up their own company and offer bids. They can enter their own information in text, with a predefined form and some interview questions. 
2. The system will use OpenAI API calls to get GPT to judge the values of the contracts based on some rubrics to determine their quality. These prices are stored in the system but not shown to players.
3. Then, the bids will be shown one by one. For each bid, players can offer to buy the contract based on the information given. The highest bidder wins.
4. The values of the bids will be shown; it will be shown whether the bidder made a Win or Loss. Their credits will be deducted; additionally the person who wrote the contract will gain a fixed % of the price (to be adjusted later, right not you can set it to 50%).
5. at the end, a leaderboard is shown; an AI generated summary of the game is shown, based on the bids, values and who bought them.
please keep code readable, simplistic, and modularize it so I can easily add new features and make changes later. 
In the README file, kindly do a brief introduction and tell me the instructions to run the project.
thanks!
Assistant: I'll provide a comprehensive solution for your Strategic Auction Simulator game. I'll break this down into several components and provide a clean, modular architecture.

Here's a proposed project structure:

```
strategic-auction-simulator/
│
├── frontend/
│   ├── public/
│   ├── src/
│   │   ├── components/
│   │   ├── pages/
│   │   ├── services/
│   │   └── utils/
│
├── backend/
│   ├── models/
│   ├── controllers/
│   ├── routes/
│   ├── services/
│   └── utils/
│
├── database/
│
├── README.md
└── package.json
```

Let me outline the key technologies I recommend:

1. Frontend: React.js with TypeScript
2. Backend: Node.js with Express
3. Real-time Communication: Socket.io
4. Database: MongoDB
5. Authentication: Firebase/Auth0
6. AI Integration: OpenAI API

Here's a sample implementation:

### Backend (Node.js/Express)

```typescript
// src/backend/models/Game.ts
import mongoose from 'mongoose';

interface IContract {
  creator: string;
  description: string;
  baseValue: number;
  actualValue: number;
  risks: string[];
}

interface IPlayer {
  id: string;
  username: string;
  credits: number;
  contracts: IContract[];
  loans: number;
}

interface IGameSession {
  id: string;
  players: IPlayer[];
  currentRound: number;
  contracts: IContract[];
}

// Game Logic Service
class GameService {
  async createGame(players: string[]) {
    // Initialize game session
  }

  async evaluateContract(contract: IContract) {
    // Use OpenAI to assess contract value
    const openai = new OpenAIService();
    return openai.assessContractValue(contract);
  }

  calculateGameOutcome(session: IGameSession) {
    // Compute final scores, apply loans, etc.
  }
}

// OpenAI Integration Service
class OpenAIService {
  async assessContractValue(contract: IContract) {
    // Use GPT to evaluate contract based on predefined rubrics
    const prompt = this.constructEvaluationPrompt(contract);
    const response = await openai.createCompletion(prompt);
    return this.parseContractValue(response);
  }
}
```

### Frontend (React)

```typescript
// Game Component
function StrategicAuctionGame() {
  const [gameState, setGameState] = useState<IGameSession>();
  const [currentPlayer, setCurrentPlayer] = useState<IPlayer>();

  const submitContract = async (contractDetails) => {
    // Submit contract logic
    socket.emit('submit-contract', contractDetails);
  };

  const placeBid = async (bid) => {
    socket.emit('place-bid', bid);
  };

  return (
    <div>
      <ContractSubmissionForm onSubmit={submitContract} />
      <BiddingArea 
        contracts={gameState.contracts} 
        onBid={placeBid}
      />
    </div>
  );
}
```

### README.md
```markdown
# Strategic Auction Simulator

## Game Concept
A multiplayer strategy game simulating government infrastructure contract bidding.

## Features
- Real-time multiplayer gameplay
- AI-powered contract valuation
- Dynamic risk assessment
- Loan and credit system

## Setup Instructions

### Prerequisites
- Node.js (v16+)
- MongoDB
- OpenAI API Key

### Installation
1. Clone the repository
2. Install dependencies
   ```
   npm install
   ```
3. Set up environment variables
4. Run the application
   ```
   npm run dev
   ```

## Gameplay
1. Create/Join Game
2. Submit Contract Proposals
3. Bid on Contracts
4. Evaluate Outcomes
```

### Key Considerations
1. Implement robust WebSocket handling
2. Secure authentication
3. Comprehensive error handling
4. Scalable architecture
5. Modular design for future expansions

### Potential Enhancements
- Machine learning for contract valuation
- More complex risk calculation
- Multiplayer chat
- Achievements/Leaderboard system

### Singaporean Context Integration
- Use local infrastructure project names
- Include references to Singapore's urban development
- Incorporate sustainability themes relevant to Singapore

Would you like me to elaborate on any specific aspect of the implementation? I can provide more detailed code snippets or discuss the architectural approach in more depth.
User: thank you! please output the FULL content of each file in your file structure. You can output around 2-3 files per turn.
Assistant: I'll start with the core backend model and service files:

1. `/backend/models/Game.ts`:
```typescript
import mongoose from 'mongoose';

export interface IContract {
  id?: string;
  creator: string;
  title: string;
  description: string;
  baseValue: number;
  actualValue?: number;
  risks: string[];
  sustainability: number;
  completionProbability: number;
}

export interface IPlayer {
  id: string;
  username: string;
  credits: number;
  contracts: IContract[];
  loans: number;
  currentBids: {
    contractId: string;
    bidAmount: number;
  }[];
}

export interface IGameSession {
  id: string;
  players: IPlayer[];
  currentRound: number;
  contracts: IContract[];
  status: 'WAITING' | 'IN_PROGRESS' | 'COMPLETED';
  createdAt: Date;
  updatedAt: Date;
}

// Mongoose Schema Definitions
const ContractSchema = new mongoose.Schema<IContract>({
  creator: { type: String, required: true },
  title: { type: String, required: true },
  description: { type: String, required: true },
  baseValue: { type: Number, required: true },
  actualValue: { type: Number },
  risks: [{ type: String }],
  sustainability: { type: Number, default: 0 },
  completionProbability: { type: Number, default: 0.5 }
});

const PlayerSchema = new mongoose.Schema<IPlayer>({
  id: { type: String, required: true },
  username: { type: String, required: true },
  credits: { type: Number, default: 3000 },
  contracts: [ContractSchema],
  loans: { type: Number, default: 0 },
  currentBids: [{
    contractId: { type: String },
    bidAmount: { type: Number }
  }]
});

const GameSessionSchema = new mongoose.Schema<IGameSession>({
  players: [PlayerSchema],
  currentRound: { type: Number, default: 0 },
  contracts: [ContractSchema],
  status: { 
    type: String, 
    enum: ['WAITING', 'IN_PROGRESS', 'COMPLETED'], 
    default: 'WAITING' 
  },
  createdAt: { type: Date, default: Date.now },
  updatedAt: { type: Date, default: Date.now }
});

export const ContractModel = mongoose.model<IContract>('Contract', ContractSchema);
export const PlayerModel = mongoose.model<IPlayer>('Player', PlayerSchema);
export const GameSessionModel = mongoose.model<IGameSession>('GameSession', GameSessionSchema);
```

2. `/backend/services/OpenAIService.ts`:
```typescript
import OpenAI from 'openai';
import { IContract } from '../models/Game';

export class OpenAIService {
  private openai: OpenAI;

  constructor() {
    this.openai = new OpenAI({
      apiKey: process.env.OPENAI_API_KEY
    });
  }

  async assessContractValue(contract: IContract): Promise<{
    actualValue: number;
    sustainability: number;
    completionProbability: number;
  }> {
    try {
      const prompt = this.constructEvaluationPrompt(contract);
      
      const response = await this.openai.chat.completions.create({
        model: "gpt-3.5-turbo",
        messages: [
          {
            role: "system",
            content: "You are an expert contract evaluator analyzing infrastructure project proposals."
          },
          {
            role: "user",
            content: prompt
          }
        ],
        functions: [
          {
            name: "contract_evaluation",
            parameters: {
              type: "object",
              properties: {
                actualValue: {
                  type: "number",
                  description: "Estimated true value of the contract"
                },
                sustainability: {
                  type: "number",
                  description: "Sustainability score (0-100)"
                },
                completionProbability: {
                  type: "number",
                  description: "Probability of successful completion (0-1)"
                }
              },
              required: ["actualValue", "sustainability", "completionProbability"]
            }
          }
        ]
      });

      const evaluation = JSON.parse(
        response.choices[0].message?.function_call?.arguments || '{}'
      );

      return {
        actualValue: evaluation.actualValue || contract.baseValue,
        sustainability: evaluation.sustainability || 50,
        completionProbability: evaluation.completionProbability || 0.5
      };
    } catch (error) {
      console.error('OpenAI Evaluation Error:', error);
      
      // Fallback values
      return {
        actualValue: contract.baseValue,
        sustainability: 50,
        completionProbability: 0.5
      };
    }
  }

  private constructEvaluationPrompt(contract: IContract): string {
    return `
      Evaluate the following infrastructure contract:
      Title: ${contract.title}
      Description: ${contract.description}
      Base Value: $${contract.baseValue}
      Initial Risks: ${contract.risks.join(', ')}

      Please provide a detailed assessment considering:
      1. Actual market value
      2. Sustainability potential
      3. Likelihood of successful completion
    `;
  }
}

export default new OpenAIService();
```

These files establish the core data models and the OpenAI integration service for contract evaluation. The `Game.ts` file defines the data structures and Mongoose schemas, while the `OpenAIService.ts` handles the AI-powered contract valuation.

Would you like me to continue with the next set of files?
User: yes
Assistant: I'll provide the next two files:

1. `/backend/controllers/GameController.ts`:
```typescript
import { Request, Response } from 'express';
import { GameSessionModel, IGameSession, IPlayer, IContract } from '../models/Game';
import OpenAIService from '../services/OpenAIService';
import { v4 as uuidv4 } from 'uuid';

export class GameController {
  async createGame(req: Request, res: Response) {
    try {
      const { players } = req.body;
      
      // Validate input
      if (!players || players.length < 2) {
        return res.status(400).json({ 
          error: 'At least two players are required to start a game' 
        });
      }

      // Create new game session
      const gameSession: IGameSession = {
        id: uuidv4(),
        players: players.map((player: any) => ({
          id: player.id,
          username: player.username,
          credits: 3000,
          contracts: [],
          loans: 0,
          currentBids: []
        })),
        currentRound: 0,
        contracts: [],
        status: 'WAITING',
        createdAt: new Date(),
        updatedAt: new Date()
      };

      const savedGame = await GameSessionModel.create(gameSession);

      res.status(201).json({
        message: 'Game created successfully',
        gameId: savedGame.id
      });
    } catch (error) {
      console.error('Game Creation Error:', error);
      res.status(500).json({ error: 'Failed to create game' });
    }
  }

  async submitContract(req: Request, res: Response) {
    try {
      const { gameId, playerId, contract } = req.body;
      
      // Validate input
      if (!gameId || !playerId || !contract) {
        return res.status(400).json({ error: 'Missing required fields' });
      }

      // Find game session
      const gameSession = await GameSessionModel.findById(gameId);
      if (!gameSession) {
        return res.status(404).json({ error: 'Game not found' });
      }

      // Enhance contract with AI evaluation
      const evaluatedContract = await OpenAIService.assessContractValue({
        ...contract,
        creator: playerId
      });

      // Add contract to game session
      const newContract: IContract = {
        ...contract,
        ...evaluatedContract,
        creator: playerId,
        id: uuidv4()
      };

      gameSession.contracts.push(newContract);
      await gameSession.save();

      res.status(201).json({
        message: 'Contract submitted successfully',
        contract: newContract
      });
    } catch (error) {
      console.error('Contract Submission Error:', error);
      res.status(500).json({ error: 'Failed to submit contract' });
    }
  }

  async placeBid(req: Request, res: Response) {
    try {
      const { gameId, playerId, contractId, bidAmount } = req.body;
      
      // Validate input
      if (!gameId || !playerId || !contractId || !bidAmount) {
        return res.status(400).json({ error: 'Missing required fields' });
      }

      // Find game session
      const gameSession = await GameSessionModel.findById(gameId);
      if (!gameSession) {
        return res.status(404).json({ error: 'Game not found' });
      }

      // Find the contract
      const contract = gameSession.contracts.find(c => c.id === contractId);
      if (!contract) {
        return res.status(404).json({ error: 'Contract not found' });
      }

      // Find the player
      const player = gameSession.players.find(p => p.id === playerId);
      if (!player) {
        return res.status(404).json({ error: 'Player not found' });
      }

      // Check if player has enough credits
      if (player.credits < bidAmount) {
        return res.status(400).json({ error: 'Insufficient credits' });
      }

      // Update player's bid
      player.currentBids.push({ contractId, bidAmount });
      
      // Save updated game session
      await gameSession.save();

      res.status(200).json({
        message: 'Bid placed successfully',
        bid: { contractId, bidAmount }
      });
    } catch (error) {
      console.error('Bid Placement Error:', error);
      res.status(500).json({ error: 'Failed to place bid' });
    }
  }

  async concludeRound(req: Request, res: Response) {
    try {
      const { gameId } = req.body;
      
      // Find game session
      const gameSession = await GameSessionModel.findById(gameId);
      if (!gameSession) {
        return res.status(404).json({ error: 'Game not found' });
      }

      // Process bids and determine winners
      gameSession.contracts.forEach(contract => {
        const bids = gameSession.players
          .flatMap(player => 
            player.currentBids
              .filter(bid => bid.contractId === contract.id)
          )
          .sort((a, b) => b.bidAmount - a.bidAmount);

        // Highest bid wins
        if (bids.length > 0) {
          const winningBid = bids[0];
          const winningPlayer = gameSession.players.find(
            p => p.currentBids.includes(winningBid)
          );
          
          if (winningPlayer) {
            // Deduct credits from winner
            winningPlayer.credits -= winningBid.bidAmount;
            
            // Credit goes to contract creator
            const creatorPlayer = gameSession.players.find(
              p => p.id === contract.creator
            );
            
            if (creatorPlayer) {
              creatorPlayer.credits += winningBid.bidAmount * 0.5;
            }
          }
        }
      });

      // Increment round
      gameSession.currentRound++;
      
      // Save updated game session
      await gameSession.save();

      res.status(200).json({
        message: 'Round concluded successfully',
        round: gameSession.currentRound
      });
    } catch (error) {
      console.error('Round Conclusion Error:', error);
      res.status(500).json({ error: 'Failed to conclude round' });
    }
  }
}

export default new GameController();
```

2. `/backend/routes/gameRoutes.ts`:
```typescript
import express from 'express';
import GameController from '../controllers/GameController';
import { authenticateUser } from '../middleware/authMiddleware';

const router = express.Router();

// Middleware to authenticate all game routes
router.use(authenticateUser);

// Game Creation and Management Routes
router.post('/create', GameController.createGame);
router.post('/submit-contract', GameController.submitContract);
router.post('/place-bid', GameController.placeBid);
router.post('/conclude-round', GameController.concludeRound);

// Additional helper routes can be added here
router.get('/active-games', (req, res) => {
  // Retrieve list of active games
});

router.get('/game-history', (req, res) => {
  // Retrieve game history for a player
});

export default router;
```

These files provide the core game logic and routing for the Strategic Auction Simulator. 

The `GameController.ts` includes key methods for:
- Creating a game session
- Submitting contracts
- Placing bids
- Concluding rounds

The `gameRoutes.ts` sets up the Express routes for these game actions, with a basic authentication middleware.

Would you like me to continue with the next set of files?
User: yes
Assistant: I'll provide the authentication middleware and a sample WebSocket setup:

1. `/backend/middleware/authMiddleware.ts`:
```typescript
import { Request, Response, NextFunction } from 'express';
import admin from 'firebase-admin';

// Initialize Firebase Admin (you'll need to set up Firebase project)
admin.initializeApp({
  credential: admin.credential.cert({
    projectId: process.env.FIREBASE_PROJECT_ID,
    clientEmail: process.env.FIREBASE_CLIENT_EMAIL,
    privateKey: process.env.FIREBASE_PRIVATE_KEY?.replace(/\\n/g, '\n')
  })
});

interface AuthenticatedRequest extends Request {
  user?: {
    id: string;
    email: string;
    username: string;
  };
}

export async function authenticateUser(
  req: AuthenticatedRequest, 
  res: Response, 
  next: NextFunction
) {
  const idToken = req.headers.authorization?.split('Bearer ')[1];

  if (!idToken) {
    return res.status(403).json({ error: 'No token provided' });
  }

  try {
    // Verify Firebase ID token
    const decodedToken = await admin.auth().verifyIdToken(idToken);
    
    // Attach user info to request
    req.user = {
      id: decodedToken.uid,
      email: decodedToken.email || '',
      username: decodedToken.name || ''
    };

    next();
  } catch (error) {
    console.error('Authentication Error:', error);
    res.status(401).json({ error: 'Unauthorized' });
  }
}

export async function registerUser(req: Request, res: Response) {
  try {
    const { email, password, username } = req.body;

    // Create user in Firebase
    const userRecord = await admin.auth().createUser({
      email,
      password,
      displayName: username
    });

    // Optionally store additional user info in your database
    await UserModel.create({
      firebaseId: userRecord.uid,
      username,
      email
    });

    res.status(201).json({
      message: 'User registered successfully',
      userId: userRecord.uid
    });
  } catch (error) {
    console.error('Registration Error:', error);
    res.status(500).json({ error: 'Registration failed' });
  }
}
```

2. `/backend/services/WebSocketService.ts`:
```typescript
import { Server } from 'socket.io';
import { Server as HttpServer } from 'http';
import { IGameSession } from '../models/Game';
import GameController from '../controllers/GameController';

class WebSocketService {
  private io: Server;

  initialize(httpServer: HttpServer) {
    this.io = new Server(httpServer, {
      cors: {
        origin: process.env.FRONTEND_URL || 'http://localhost:3000',
        methods: ['GET', 'POST']
      }
    });

    this.setupEventListeners();
  }

  private setupEventListeners() {
    this.io.on('connection', (socket) => {
      console.log('New client connected:', socket.id);

      // Game Session Events
      socket.on('create-game', async (gameConfig) => {
        try {
          const gameSession = await this.createGame(gameConfig);
          socket.emit('game-created', gameSession);
          socket.join(gameSession.id);
        } catch (error) {
          socket.emit('error', { message: 'Failed to create game' });
        }
      });

      socket.on('join-game', (gameId) => {
        socket.join(gameId);
        this.notifyGameJoined(gameId, socket);
      });

      socket.on('submit-contract', async (contractData) => {
        try {
          const contract = await this.submitContract(contractData);
          this.io.to(contractData.gameId).emit('contract-submitted', contract);
        } catch (error) {
          socket.emit('error', { message: 'Contract submission failed' });
        }
      });

      socket.on('place-bid', async (bidData) => {
        try {
          const bid = await this.placeBid(bidData);
          this.io.to(bidData.gameId).emit('bid-placed', bid);
        } catch (error) {
          socket.emit('error', { message: 'Bid placement failed' });
        }
      });

      socket.on('disconnect', () => {
        console.log('Client disconnected:', socket.id);
      });
    });
  }

  private async createGame(gameConfig: any): Promise<IGameSession> {
    // Implement game creation logic
    // This would typically call your GameController
    return await GameController.createGame(gameConfig);
  }

  private async submitContract(contractData: any) {
    // Implement contract submission logic
    return await GameController.submitContract(contractData);
  }

  private async placeBid(bidData: any) {
    // Implement bid placement logic
    return await GameController.placeBid(bidData);
  }

  private notifyGameJoined(gameId: string, socket: any) {
    // Notify other players in the game that someone joined
    socket.to(gameId).emit('player-joined', { 
      gameId, 
      playerId: socket.id 
    });
  }

  // Broadcast game state updates
  broadcastGameUpdate(gameId: string, gameState: IGameSession) {
    this.io.to(gameId).emit('game-state-update', gameState);
  }

  // Send private message to a specific player
  sendPrivateMessage(playerId: string, message: any) {
    this.io.to(playerId).emit('private-message', message);
  }
}

export default new WebSocketService();
```

3. `/backend/server.ts`:
```typescript
import express from 'express';
import http from 'http';
import mongoose from 'mongoose';
import cors from 'cors';
import dotenv from 'dotenv';

// Import routes
import gameRoutes from './routes/gameRoutes';
import WebSocketService from './services/WebSocketService';

// Load environment variables
dotenv.config();

const app = express();
const server = http.createServer(app);

// Middleware
app.use(cors());
app.use(express.json());

// Database Connection
mongoose.connect(process.env.MONGODB_URI || 'mongodb://localhost:27017/strategic-auction', {
  useNewUrlParser: true,
  useUnifiedTopology: true
} as mongoose.ConnectOptions);

const db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
db.once('open', () => {
  console.log('Connected to MongoDB');
});

// Routes
app.use('/api/game', gameRoutes);

// Initialize WebSocket
WebSocketService.initialize(server);

// Start server
const PORT = process.env.PORT || 5000;
server.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`);
});

// Graceful shutdown
process.on('SIGINT', async () => {
  await mongoose.connection.close();
  process.exit(0);
});
```

These files cover:
1. Authentication middleware using Firebase
2. WebSocket service for real-time game interactions
3. Main server setup with database connection

Key features:
- Firebase authentication
- MongoDB integration
- WebSocket real-time communication
- Error handling
- Environment configuration

Would you like me to continue with the next set of files or explain any part of the implementation?
User: yes. create 3 more files
Assistant: I'll create three more files focusing on frontend components and utilities:

1. `/frontend/src/components/ContractSubmissionForm.tsx`:
```typescript
import React, { useState } from 'react';
import { 
  Box, 
  Button, 
  FormControl, 
  InputLabel, 
  Select, 
  TextField, 
  MenuItem 
} from '@mui/material';

interface ContractSubmissionProps {
  onSubmit: (contractData: {
    title: string;
    description: string;
    baseValue: number;
    risks: string[];
    sustainability: number;
  }) => void;
}

const SINGAPORE_INFRASTRUCTURE_CATEGORIES = [
  'Public Housing Development',
  'Transportation Infrastructure',
  'Green Energy Project',
  'Urban Redevelopment',
  'Smart City Initiative'
];

const RISK_CATEGORIES = [
  'Environmental Impact',
  'Budget Overrun',
  'Technical Complexity',
  'Regulatory Challenges',
  'Supply Chain Disruption'
];

export const ContractSubmissionForm: React.FC<ContractSubmissionProps> = ({ onSubmit }) => {
  const [formData, setFormData] = useState({
    title: '',
    description: '',
    baseValue: 0,
    category: '',
    risks: [] as string[]
  });

  const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const { name, value } = e.target;
    setFormData(prev => ({
      ...prev,
      [name]: value
    }));
  };

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    onSubmit({
      ...formData,
      sustainability: Math.floor(Math.random() * 100), // Random sustainability score
    });
  };

  return (
    <Box component="form" onSubmit={handleSubmit} sx={{ display: 'flex', flexDirection: 'column', gap: 2 }}>
      <TextField
        name="title"
        label="Contract Title"
        value={formData.title}
        onChange={handleChange}
        required
      />
      <TextField
        name="description"
        label="Project Description"
        multiline
        rows={4}
        value={formData.description}
        onChange={handleChange}
        required
      />
      <TextField
        name="baseValue"
        label="Base Contract Value (SGD)"
        type="number"
        value={formData.baseValue}
        onChange={handleChange}
        required
      />
      <FormControl>
        <InputLabel>Infrastructure Category</InputLabel>
        <Select
          name="category"
          value={formData.category}
          onChange={handleChange as any}
          required
        >
          {SINGAPORE_INFRASTRUCTURE_CATEGORIES.map(category => (
            <MenuItem key={category} value={category}>
              {category}
            </MenuItem>
          ))}
        </Select>
      </FormControl>
      <FormControl>
        <InputLabel>Potential Risks</InputLabel>
        <Select
          multiple
          name="risks"
          value={formData.risks}
          onChange={handleChange as any}
        >
          {RISK_CATEGORIES.map(risk => (
            <MenuItem key={risk} value={risk}>
              {risk}
            </MenuItem>
          ))}
        </Select>
      </FormControl>
      <Button type="submit" variant="contained" color="primary">
        Submit Contract
      </Button>
    </Box>
  );
};
```

2. `/frontend/src/utils/gameHelpers.ts`:
```typescript
import { io, Socket } from 'socket.io-client';

export class GameSocketClient {
  private socket: Socket;
  private static instance: GameSocketClient;

  private constructor() {
    this.socket = io(process.env.REACT_APP_BACKEND_URL || 'http://localhost:5000', {
      auth: {
        token: localStorage.getItem('authToken')
      }
    });

    this.setupListeners();
  }

  public static getInstance(): GameSocketClient {
    if (!GameSocketClient.instance) {
      GameSocketClient.instance = new GameSocketClient();
    }
    return GameSocketClient.instance;
  }

  private setupListeners() {
    this.socket.on('connect', () => {
      console.log('Connected to game server');
    });

    this.socket.on('disconnect', () => {
      console.log('Disconnected from game server');
    });

    this.socket.on('error', (error) => {
      console.error('Socket Error:', error);
    });
  }

  public createGame(gameConfig: any) {
    return new Promise((resolve, reject) => {
      this.socket.emit('create-game', gameConfig);
      this.socket.once('game-created', resolve);
      this.socket.once('error', reject);
    });
  }

  public joinGame(gameId: string) {
    this.socket.emit('join-game', gameId);
  }

  public submitContract(contractData: any) {
    return new Promise((resolve, reject) => {
      this.socket.emit('submit-contract', contractData);
      this.socket.once('contract-submitted', resolve);
      this.socket.once('error', reject);
    });
  }

  public placeBid(bidData: any) {
    return new Promise((resolve, reject) => {
      this.socket.emit('place-bid', bidData);
      this.socket.once('bid-placed', resolve);
      this.socket.once('error', reject);
    });
  }

  public onGameUpdate(callback: (gameState: any) => void) {
    this.socket.on('game-state-update', callback);
  }

  public cleanup() {
    this.socket.off('connect');
    this.socket.off('disconnect');
    this.socket.off('error');
    this.socket.off('game-state-update');
  }
}
```

3. `/frontend/src/services/AuthService.ts`:
```typescript
import { 
  getAuth, 
  createUserWithEmailAndPassword, 
  signInWithEmailAndPassword, 
  signOut, 
  User 
} from 'firebase/auth';
import firebaseApp from '../config/firebaseConfig';

class AuthService {
  private auth = getAuth(firebaseApp);

  async register(email: string, password: string, username: string) {
    try {
      const userCredential = await createUserWithEmailAndPassword(
        this.auth, 
        email, 
        password
      );
      
      // Optional: Update profile with username
      if (userCredential.user) {
        await this.updateUserProfile(userCredential.user, { displayName: username });
      }

      return userCredential.user;
    } catch (error: any) {
      console.error('Registration Error', error);
      throw new Error(error.message);
    }
  }

  async login(email: string, password: string) {
    try {
      const userCredential = await signInWithEmailAndPassword(
        this.auth, 
        email, 
        password
      );
      
      // Get ID token for backend authentication
      const idToken = await userCredential.user.getIdToken();
      localStorage.setItem('authToken', idToken);

      return userCredential.user;
    } catch (error: any) {
      console.error('Login Error', error);
      throw new Error(error.message);
    }
  }

  async logout() {
    try {
      await signOut(this.auth);
      localStorage.removeItem('authToken');
    } catch (error: any) {
      console.error('Logout Error', error);
      throw new Error(error.message);
    }
  }

  private async updateUserProfile(user: User, profile: { displayName?: string }) {
    try {
      // Firebase method to update user profile
      // await updateProfile(user, profile);
    } catch (error) {
      console.error('Profile Update Error', error);
    }
  }

  getCurrentUser(): User | null {
    return this.auth.currentUser;
  }

  async getIdToken(): Promise<string | null>
User: continue
Assistant: Continuing the `AuthService.ts`:

```typescript
  async getIdToken(): Promise<string | null> {
    try {
      const currentUser = this.auth.currentUser;
      return currentUser ? await currentUser.getIdToken() : null;
    } catch (error) {
      console.error('Get ID Token Error', error);
      return null;
    }
  }

  // Add listener for auth state changes
  onAuthStateChanged(callback: (user: User | null) => void) {
    return this.auth.onAuthStateChanged(callback);
  }

  // Password reset
  async resetPassword(email: string) {
    try {
      await sendPasswordResetEmail(this.auth, email);
      return true;
    } catch (error: any) {
      console.error('Password Reset Error', error);
      throw new Error(error.message);
    }
  }

  // Check if user is authenticated
  isAuthenticated(): boolean {
    return !!this.auth.currentUser;
  }
}

const authService = new AuthService();
export default authService;
```

I'll also provide the Firebase configuration file:

`/frontend/src/config/firebaseConfig.ts`:
```typescript
import { initializeApp } from 'firebase/app';

// Your web app's Firebase configuration
const firebaseConfig = {
  apiKey: process.env.REACT_APP_FIREBASE_API_KEY,
  authDomain: process.env.REACT_APP_FIREBASE_AUTH_DOMAIN,
  projectId: process.env.REACT_APP_FIREBASE_PROJECT_ID,
  storageBucket: process.env.REACT_APP_FIREBASE_STORAGE_BUCKET,
  messagingSenderId: process.env.REACT_APP_FIREBASE_MESSAGING_SENDER_ID,
  appId: process.env.REACT_APP_FIREBASE_APP_ID
};

// Initialize Firebase
const firebaseApp = initializeApp(firebaseConfig);

export default firebaseApp;
```

And a sample environment file (`.env`):
```bash
# Firebase Configuration
REACT_APP_FIREBASE_API_KEY=your_firebase_api_key
REACT_APP_FIREBASE_AUTH_DOMAIN=your_project.firebaseapp.com
REACT_APP_FIREBASE_PROJECT_ID=your_project_id
REACT_APP_FIREBASE_STORAGE_BUCKET=your_project.appspot.com
REACT_APP_FIREBASE_MESSAGING_SENDER_ID=your_sender_id
REACT_APP_FIREBASE_APP_ID=your_app_id

# Backend URL
REACT_APP_BACKEND_URL=http://localhost:5000

# OpenAI API (if needed client-side)
REACT_APP_OPENAI_API_KEY=your_openai_api_key
```

And a sample README.md to tie everything together:

```markdown
# Strategic Auction Simulator

## Game Concept
A multiplayer strategy game simulating government infrastructure contract bidding in Singapore.

## Features
- Real-time multiplayer gameplay
- AI-powered contract valuation
- Dynamic risk assessment
- Secure authentication

## Technology Stack
- Frontend: React with TypeScript
- Backend: Node.js with Express
- Real-time Communication: Socket.io
- Authentication: Firebase
- Database: MongoDB
- AI Integration: OpenAI

## Prerequisites
- Node.js (v16+)
- MongoDB
- Firebase Account
- OpenAI API Key

## Setup Instructions

### 1. Clone the Repository
```bash
git clone https://github.com/yourusername/strategic-auction-simulator.git
cd strategic-auction-simulator
```

### 2. Backend Setup
```bash
cd backend
npm install
```

Create a `.env` file in the backend directory with the required environment variables:
- MongoDB connection string
- Firebase credentials
- OpenAI API key

### 3. Frontend Setup
```bash
cd ../frontend
npm install
```

Create a `.env` file in the frontend directory with Firebase and backend configuration.

### 4. Run the Application
Terminal 1 (Backend):
```bash
npm run start:backend
```

Terminal 2 (Frontend):
```bash
npm run start:frontend
```

## Gameplay Instructions
1. Register/Login
2. Create or Join a Game
3. Submit Infrastructure Contract Proposals
4. Bid on Contracts
5. Strategize and Win!

## Contributing
1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Create a new Pull Request

## License
[Your License Here]
```

These files provide:
1. A comprehensive authentication service
2. Firebase configuration
3. Environment variable setup
4. Detailed README with setup instructions

Would you like me to elaborate on any part of the implementation or provide additional files?
User: You did not give me package.json. You also did not give me frontend/src/pages.
Assistant: You're right. I'll provide the `package.json` for both frontend and backend, and a sample page for the frontend.

1. Backend `package.json`:
```json
{
  "name": "strategic-auction-simulator-backend",
  "version": "1.0.0",
  "description": "Backend for Strategic Auction Simulator",
  "main": "server.ts",
  "scripts": {
    "start": "node dist/server.js",
    "dev": "ts-node-dev --respawn --transpile-only src/server.ts",
    "build": "tsc",
    "test": "jest",
    "lint": "eslint . --ext .ts"
  },
  "dependencies": {
    "@types/express": "^4.17.13",
    "cors": "^2.8.5",
    "dotenv": "^16.0.3",
    "express": "^4.18.2",
    "firebase-admin": "^11.5.0",
    "mongoose": "^7.0.3",
    "openai": "^3.2.1",
    "socket.io": "^4.6.1",
    "uuid": "^9.0.0"
  },
  "devDependencies": {
    "@types/cors": "^2.8.13",
    "@types/jest": "^29.5.0",
    "@types/node": "^18.15.11",
    "@types/socket.io": "^3.0.2",
    "@types/uuid": "^9.0.1",
    "jest": "^29.5.0",
    "ts-node-dev": "^2.0.0",
    "typescript": "^5.0.4"
  }
}
```

2. Frontend `package.json`:
```json
{
  "name": "strategic-auction-simulator-frontend",
  "version": "1.0.0",
  "private": true,
  "dependencies": {
    "@emotion/react": "^11.10.6",
    "@emotion/styled": "^11.10.6",
    "@mui/material": "^5.12.0",
    "@types/node": "^18.15.11",
    "@types/react": "^18.0.33",
    "firebase": "^9.19.1",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-router-dom": "^6.10.0",
    "socket.io-client": "^4.6.1",
    "typescript": "^5.0.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}
```

3. Frontend Pages:

`/frontend/src/pages/DashboardPage.tsx`:
```typescript
import React, { useState, useEffect } from 'react';
import { 
  Container, 
  Typography, 
  Grid, 
  Card, 
  CardContent, 
  Button 
} from '@mui/material';
import { ContractSubmissionForm } from '../components/ContractSubmissionForm';
import { GameSocketClient } from '../utils/gameHelpers';
import AuthService from '../services/AuthService';

interface GameSession {
  id: string;
  players: any[];
  status: string;
}

const DashboardPage: React.FC = () => {
  const [user, setUser] = useState(AuthService.getCurrentUser());
  const [activeSessions, setActiveSessions] = useState<GameSession[]>([]);
  const socketClient = GameSocketClient.getInstance();

  useEffect(() => {
    // Fetch active game sessions
    const fetchActiveSessions = async () => {
      try {
        // Placeholder for actual API call
        // const sessions = await gameService.getActiveSessions();
        // setActiveSessions(sessions);
      } catch (error) {
        console.error('Failed to fetch active sessions', error);
      }
    };

    fetchActiveSessions();

    // Listen for game updates
    socketClient.onGameUpdate((gameState) => {
      // Handle game state updates
      console.log('Game state updated:', gameState);
    });

    return () => {
      socketClient.cleanup();
    };
  }, []);

  const handleCreateGame = async () => {
    try {
      const newGame = await socketClient.createGame({
        creator: user?.uid,
        players: [user?.uid]
      });
      console.log('Game created:', newGame);
    } catch (error) {
      console.error('Failed to create game', error);
    }
  };

  const handleContractSubmit = async (contractData: any) => {
    try {
      const submittedContract = await socketClient.submitContract({
        ...contractData,
        playerId: user?.uid
      });
      console.log('Contract submitted:', submittedContract);
    } catch (error) {
      console.error('Failed to submit contract', error);
    }
  };

  return (
    <Container maxWidth="lg">
      <Typography variant="h4" gutterBottom>
        Welcome, {user?.displayName || 'Player'}
      </Typography>

      <Grid container spacing={3}>
        <Grid item xs={12} md={6}>
          <Card>
            <CardContent>
              <Typography variant="h5">Create New Game</Typography>
              <Button 
                variant="contained" 
                color="primary" 
                onClick={handleCreateGame}
              >
                Create Game
              </Button>
            </CardContent>
          </Card>
        </Grid>

        <Grid item xs={12} md={6}>
          <Card>
            <CardContent>
              <Typography variant="h5">Active Game Sessions</Typography>
              {activeSessions.map(session => (
                <div key={session.id}>
                  <Typography>
                    Game {session.id} - {session.status}
                  </Typography>
                </div>
              ))}
            </CardContent>
          </Card>
        </Grid>

        <Grid item xs={12}>
          <Card>
            <CardContent>
              <Typography variant="h5">Submit Contract</Typography>
              <ContractSubmissionForm onSubmit={handleContractSubmit} />
            </CardContent>
          </Card>
        </Grid>
      </Grid>
    </Container>
  );
};

export default DashboardPage;
```

`/frontend/src/pages/LoginPage.tsx`:
```typescript
import React, { useState } from 'react';
import { 
  Container, 
  Typography, 
  TextField, 
  Button, 
  Box, 
  Paper 
} from '@mui/material';
import { useNavigate } from 'react-router-dom';
import AuthService from '../services/AuthService';

const LoginPage: React.FC = () => {
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [error, setError] = useState('');
  const navigate = useNavigate();

  const handleLogin = async (e: React.FormEvent) => {
    e.preventDefault();
    setError('');

    try {
      await AuthService.login(email, password);
      navigate('/dashboard');
    } catch (err: any) {
      setError(err.message);
    }
  };

  const handleRegister = async () => {
    navigate('/register');
  };

  return (
    <Container maxWidth="xs">
      <Paper elevation={3} sx={{ 
        marginTop: 8, 
        display: '
User: continue
Assistant: Here's the continuation of the `LoginPage.tsx`:

```typescript
        flex-direction: 'column',
        alignItems: 'center',
        padding: 3
      }}>
        <Typography component="h1" variant="h5">
          Strategic Auction Simulator
        </Typography>
        <Box 
          component="form" 
          onSubmit={handleLogin} 
          sx={{ width: '100%', mt: 1 }}
        >
          <TextField
            margin="normal"
            required
            fullWidth
            id="email"
            label="Email Address"
            name="email"
            autoComplete="email"
            autoFocus
            value={email}
            onChange={(e) => setEmail(e.target.value)}
          />
          <TextField
            margin="normal"
            required
            fullWidth
            name="password"
            label="Password"
            type="password"
            id="password"
            autoComplete="current-password"
            value={password}
            onChange={(e) => setPassword(e.target.value)}
          />
          {error && (
            <Typography color="error" variant="body2">
              {error}
            </Typography>
          )}
          <Button
            type="submit"
            fullWidth
            variant="contained"
            sx={{ mt: 3, mb: 2 }}
          >
            Sign In
          </Button>
          <Button
            fullWidth
            variant="outlined"
            onClick={handleRegister}
            sx={{ mt: 1 }}
          >
            Register New Account
          </Button>
        </Box>
      </Paper>
    </Container>
  );
};

export default LoginPage;
```

`/frontend/src/pages/RegisterPage.tsx`:
```typescript
import React, { useState } from 'react';
import { 
  Container, 
  Typography, 
  TextField, 
  Button, 
  Box, 
  Paper 
} from '@mui/material';
import { useNavigate } from 'react-router-dom';
import AuthService from '../services/AuthService';

const RegisterPage: React.FC = () => {
  const [username, setUsername] = useState('');
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [confirmPassword, setConfirmPassword] = useState('');
  const [error, setError] = useState('');
  const navigate = useNavigate();

  const handleRegister = async (e: React.FormEvent) => {
    e.preventDefault();
    setError('');

    // Basic validation
    if (password !== confirmPassword) {
      setError('Passwords do not match');
      return;
    }

    try {
      await AuthService.register(email, password, username);
      navigate('/dashboard');
    } catch (err: any) {
      setError(err.message);
    }
  };

  const handleLogin = () => {
    navigate('/login');
  };

  return (
    <Container maxWidth="xs">
      <Paper elevation={3} sx={{ 
        marginTop: 8, 
        display: 'flex',
        flexDirection: 'column',
        alignItems: 'center',
        padding: 3
      }}>
        <Typography component="h1" variant="h5">
          Register for Strategic Auction
        </Typography>
        <Box 
          component="form" 
          onSubmit={handleRegister} 
          sx={{ width: '100%', mt: 1 }}
        >
          <TextField
            margin="normal"
            required
            fullWidth
            id="username"
            label="Username"
            name="username"
            autoFocus
            value={username}
            onChange={(e) => setUsername(e.target.value)}
          />
          <TextField
            margin="normal"
            required
            fullWidth
            id="email"
            label="Email Address"
            name="email"
            autoComplete="email"
            value={email}
            onChange={(e) => setEmail(e.target.value)}
          />
          <TextField
            margin="normal"
            required
            fullWidth
            name="password"
            label="Password"
            type="password"
            id="password"
            autoComplete="new-password"
            value={password}
            onChange={(e) => setPassword(e.target.value)}
          />
          <TextField
            margin="normal"
            required
            fullWidth
            name="confirmPassword"
            label="Confirm Password"
            type="password"
            id="confirmPassword"
            value={confirmPassword}
            onChange={(e) => setConfirmPassword(e.target.value)}
          />
          {error && (
            <Typography color="error" variant="body2">
              {error}
            </Typography>
          )}
          <Button
            type="submit"
            fullWidth
            variant="contained"
            sx={{ mt: 3, mb: 2 }}
          >
            Register
          </Button>
          <Button
            fullWidth
            variant="outlined"
            onClick={handleLogin}
            sx={{ mt: 1 }}
          >
            Already have an account? Sign In
          </Button>
        </Box>
      </Paper>
    </Container>
  );
};

export default RegisterPage;
```

`/frontend/src/pages/GameSessionPage.tsx`:
```typescript
import React, { useState, useEffect } from 'react';
import { 
  Container, 
  Typography, 
  Grid, 
  Card, 
  CardContent, 
  Button, 
  List, 
  ListItem, 
  ListItemText 
} from '@mui/material';
import { GameSocketClient } from '../utils/gameHelpers';
import AuthService from '../services/AuthService';

interface Contract {
  id: string;
  title: string;
  description: string;
  baseValue: number;
}

const GameSessionPage: React.FC<{ gameId: string }> = ({ gameId }) => {
  const [user] = useState(AuthService.getCurrentUser());
  const [contracts, setContracts] = useState<Contract[]>([]);
  const [currentBid, setCurrentBid] = useState<number>(0);
  const socketClient = GameSocketClient.getInstance();

  useEffect(() => {
    // Join the game session
    socketClient.joinGame(gameId);

    // Listen for contract updates
    const handleContractUpdate = (newContracts: Contract[]) => {
      setContracts(newContracts);
    };

    socketClient.onGameUpdate(handleContractUpdate);

    return () => {
      socketClient.cleanup();
    };
  }, [gameId]);

  const handlePlaceBid = async (contractId: string) => {
    try {
      await socketClient.placeBid({
        gameId,
        playerId: user?.uid,
        contractId,
        bidAmount: currentBid
      });
    } catch (error) {
      console.error('Bid placement failed', error);
    }
  };

  return (
    <Container maxWidth="lg">
      <Typography variant="h4" gutterBottom>
        Game Session: {gameId}
      </Typography>

      <Grid container spacing={3}>
        <Grid item xs={12} md={8}>
          <Card>
            <CardContent>
              <Typography variant="h5">Available Contracts</Typography>
              <List>
                {contracts.map(contract => (
                  <ListItem key={contract.id}>
                    <ListItemText 
                      primary={contract.title}
                      secondary={`Base Value: SGD ${contract.baseValue}`}
                    />
                    <Button 
                      variant="contained" 
                      color="primary"
                      onClick={() => handlePlaceBid(contract.id)}
                    >
                      Bid
                    </Button>
                  </ListItem>
                ))}
              </List>
            </CardContent>
          </Card>
        </Grid>

        <Grid item xs={12} md={4}>
          <Card>
            <CardContent>
              <Typography variant="h5">Your Status</Typography>
              <Typography>
                Credits: {/* Display user credits */}
              </Typography>
              <Typography>
                Active Bids: {/* Display active bids */}
User: continue
Assistant: Continuing the `GameSessionPage.tsx`:

```typescript
              </Typography>
            </CardContent>
          </Card>
        </Grid>
      </Grid>
    </Container>
  );
};

export default GameSessionPage;
```

Now, I'll add a routing configuration to tie these pages together:

`/frontend/src/App.tsx`:
```typescript
import React from 'react';
import { 
  BrowserRouter as Router, 
  Routes, 
  Route, 
  Navigate 
} from 'react-router-dom';
import { ThemeProvider, createTheme } from '@mui/material/styles';
import CssBaseline from '@mui/material/CssBaseline';

// Import pages
import LoginPage from './pages/LoginPage';
import RegisterPage from './pages/RegisterPage';
import DashboardPage from './pages/DashboardPage';
import GameSessionPage from './pages/GameSessionPage';

// Import services
import AuthService from './services/AuthService';

// Custom theme
const theme = createTheme({
  palette: {
    mode: 'dark',
    primary: {
      main: '#1976d2',
    },
    background: {
      default: '#121212',
      paper: '#1d1d1d',
    },
  },
});

// Protected Route Component
const ProtectedRoute: React.FC<{ children: React.ReactNode }> = ({ children }) => {
  const isAuthenticated = AuthService.isAuthenticated();
  
  return isAuthenticated ? (
    <>{children}</>
  ) : (
    <Navigate to="/login" replace />
  );
};

const App: React.FC = () => {
  return (
    <ThemeProvider theme={theme}>
      <CssBaseline />
      <Router>
        <Routes>
          {/* Public Routes */}
          <Route path="/login" element={<LoginPage />} />
          <Route path="/register" element={<RegisterPage />} />
          
          {/* Protected Routes */}
          <Route 
            path="/dashboard" 
            element={
              <ProtectedRoute>
                <DashboardPage />
              </ProtectedRoute>
            } 
          />
          <Route 
            path="/game/:gameId" 
            element={
              <ProtectedRoute>
                <GameSessionPage gameId={/* Extract from route params */} />
              </ProtectedRoute>
            } 
          />

          {/* Default Route */}
          <Route 
            path="/" 
            element={<Navigate to="/dashboard" replace />} 
          />
        </Routes>
      </Router>
    </ThemeProvider>
  );
};

export default App;
```

And a global styles file:

`/frontend/src/index.css`:
```css
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #121212;
  color: #ffffff;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #1d1d1d;
}

::-webkit-scrollbar-thumb {
  background: #555;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #777;
}
```

Finally, the main entry point:

`/frontend/src/index.tsx`:
```typescript
import React from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';
import App from './App';

// Initialize Firebase (ensure this is done before rendering)
import './config/firebaseConfig';

const root = ReactDOM.createRoot(
  document.getElementById('root') as HTMLElement
);

root.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
);
```

This setup provides:
1. A complete frontend application structure
2. Authentication flow
3. Protected routes
4. Responsive design
5. Theme configuration
6. Entry points for different pages

The application now has:
- Login page
- Registration page
- Dashboard
- Game Session page
- Routing
- Authentication protection
- Socket integration
- Material-UI styling

Would you like me to elaborate on any part of the implementation or provide additional details?
User: what is the package.json for the root project?
Assistant: Here's a comprehensive root `package.json` that manages both frontend and backend:

```json
{
  "name": "strategic-auction-simulator",
  "version": "1.0.0",
  "description": "Multiplayer Strategic Auction Game",
  "main": "index.js",
  "scripts": {
    "start": "concurrently \"npm run start:backend\" \"npm run start:frontend\"",
    "start:backend": "cd backend && npm run dev",
    "start:frontend": "cd frontend && npm start",
    "build": "npm run build:backend && npm run build:frontend",
    "build:backend": "cd backend && npm run build",
    "build:frontend": "cd frontend && npm run build",
    "install:all": "npm run install:backend && npm run install:frontend",
    "install:backend": "cd backend && npm install",
    "install:frontend": "cd frontend && npm install",
    "test": "concurrently \"npm run test:backend\" \"npm run test:frontend\"",
    "test:backend": "cd backend && npm test",
    "test:frontend": "cd frontend && npm test",
    "lint": "concurrently \"npm run lint:backend\" \"npm run lint:frontend\"",
    "lint:backend": "cd backend && npm run lint",
    "lint:frontend": "cd frontend && npm run lint",
    "prepare": "husky install"
  },
  "keywords": [
    "strategic-auction",
    "multiplayer-game",
    "typescript",
    "react",
    "nodejs"
  ],
  "author": "Your Name",
  "license": "MIT",
  "devDependencies": {
    "concurrently": "^7.6.0",
    "husky": "^8.0.3",
    "npm-run-all": "^4.1.5"
  },
  "husky": {
    "hooks": {
      "pre-commit": "npm run lint",
      "pre-push": "npm run test"
    }
  },
  "engines": {
    "node": ">=16.0.0",
    "npm": ">=8.0.0"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/yourusername/strategic-auction-simulator.git"
  }
}
```

This root `package.json` provides several key features:

1. **Workspace Management**:
   - Scripts to start, build, install, test, and lint both backend and frontend
   - Uses `concurrently` to run multiple npm scripts simultaneously

2. **Development Workflow**:
   - `npm start`: Starts both backend and frontend dev servers
   - `npm run build`: Builds both backend and frontend
   - `npm run test`: Runs tests for both projects

3. **Dependency Management**:
   - `npm run install:all`: Installs dependencies for both projects
   - Separate install scripts for backend and frontend

4. **Git Hooks**:
   - Uses `husky` to run linting before commits
   - Runs tests before pushing

5. **Node and NPM Version Constraints**:
   - Specifies minimum Node.js and npm versions

6. **Repository Information**:
   - Includes project metadata, keywords, and repository URL

To use this, you'll need to install a few dev dependencies in the root directory:

```bash
npm install --save-dev concurrently husky npm-run-all
```

Recommended `.gitignore` for the root project:
```
# Dependency directories
node_modules/

# Build output
backend/dist/
frontend/build/

# Environment files
**/.env

# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

# IDE files
.vscode/
.idea/

# OS generated files
.DS_Store
Thumbs.db
```

This setup provides a robust, scalable project structure that makes it easy to manage a full-stack TypeScript application with separate frontend and backend workspaces.

Would you like me to elaborate on any aspect of the project setup?
User: Could not find a required file.
[1]   Name: index.html
[1]   Searched in: /Users/jerry/Documents/nushhack24/strategic-auction-simulator/frontend/public

how to fix?
Assistant: The error indicates that you're missing the `index.html` file in the `frontend/public` directory. Here's a standard `index.html` for a React application:

Create a file at `/frontend/public/index.html`:

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="theme-color" content="#000000" />
    <meta
      name="description"
      content="Strategic Auction Simulator - A multiplayer infrastructure bidding game"
    />
    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
    <title>Strategic Auction Simulator</title>
    <link 
      rel="stylesheet" 
      href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap"
    />
  </head>
  <body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
  </body>
</html>
```

You'll also need to create a few additional files in the `public` directory:

1. `/frontend/public/manifest.json`:
```json
{
  "short_name": "Auction Simulator",
  "name": "Strategic Auction Simulator",
  "icons": [
    {
      "src": "favicon.ico",
      "sizes": "64x64 32x32 24x24 16x16",
      "type": "image/x-icon"
    },
    {
      "src": "logo192.png",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "logo512.png",
      "type": "image/png",
      "sizes": "512x512"
    }
  ],
  "start_url": ".",
  "display": "standalone",
  "theme_color": "#000000",
  "background_color": "#ffffff"
}
```

2. `/frontend/public/favicon.ico`: 
You'll need to create or download a favicon. You can use an online favicon generator or create a simple one.

3. `/frontend/public/logo192.png` and `/frontend/public/logo512.png`:
These are application logos in different sizes. You can create these using a graphic design tool or find suitable placeholder images.

If you want quick placeholder logos, you can use placeholder images or generate simple logos using online tools.

The key files are:
- `index.html`: The main HTML template
- `manifest.json`: Web app manifest
- `favicon.ico`: Site favicon
- `logo192.png` and `logo512.png`: App icons

Make sure these files are present in the `/frontend/public/` directory, and the error should be resolved.

Would you like me to provide more details or help you create these files?
User: new error.
Compiled with problems:
ERROR in src/pages/DashboardPage.tsx:30:17
TS2345: Argument of type 'User' is not assignable to parameter of type 'SetStateAction<null>'.
  Type 'User' provides no match for the signature '(prevState: null): null'.
    28 |     const unsubscribe = onAuthStateChanged(auth, (currentUser) => {
    29 |       if (currentUser) {
  > 30 |         setUser(currentUser);
       |                 ^^^^^^^^^^^
    31 |       }
    32 |     });
    33 |
ERROR in src/pages/DashboardPage.tsx:62:24
TS2339: Property 'uid' does not exist on type 'never'.
    60 |     try {
    61 |       const newGame = await socketClient.createGame({
  > 62 |         creator: user?.uid,
       |                        ^^^
    63 |         players: [user?.uid]
    64 |       });
    65 |       console.log('Game created:', newGame);
ERROR in src/pages/DashboardPage.tsx:63:25
TS2339: Property 'uid' does not exist on type 'never'.
    61 |       const newGame = await socketClient.createGame({
    62 |         creator: user?.uid,
  > 63 |         players: [user?.uid]
       |                         ^^^
    64 |       });
    65 |       console.log('Game created:', newGame);
    66 |     } catch (error) {
ERROR in src/pages/DashboardPage.tsx:75:25
TS2339: Property 'uid' does not exist on type 'never'.
    73 |       const submittedContract = await socketClient.submitContract({
    74 |         ...contractData,
  > 75 |         playerId: user?.uid
       |                         ^^^
    76 |       });
    77 |       console.log('Contract submitted:', submittedContract);
    78 |     } catch (error) {
ERROR in src/pages/DashboardPage.tsx:86:25
TS2339: Property 'displayName' does not exist on type 'never'.
    84 |     <Container maxWidth="lg">
    85 |       <Typography variant="h4" gutterBottom>
  > 86 |         Welcome, {user?.displayName || 'Player'}
       |                         ^^^^^^^^^^^
    87 |       </Typography>
    88 |
    89 |       <Grid container spacing={3}>
ERROR in src/pages/DashboardPage.tsx:110:35
TS2339: Property 'id' does not exist on type 'never'.
    108 |               <Typography variant="h5">Active Game Sessions</Typography>
    109 |               {activeSessions.map(session => (
  > 110 |                 <div key={session.id}>
        |                                   ^^
    111 |                   <Typography>
    112 |                     Game {session.id} - {session.status}
    113 |                   </Typography>
ERROR in src/pages/DashboardPage.tsx:112:35
TS2339: Property 'id' does not exist on type 'never'.
    110 |                 <div key={session.id}>
    111 |                   <Typography>
  > 112 |                     Game {session.id} - {session.status}
        |                                   ^^
    113 |                   </Typography>
    114 |                 </div>
    115 |               ))}
ERROR in src/pages/DashboardPage.tsx:112:50
TS2339: Property 'status' does not exist on type 'never'.
    110 |                 <div key={session.id}>
    111 |                   <Typography>
  > 112 |                     Game {session.id} - {session.status}
        |                                                  ^^^^^^
    113 |                   </Typography>
    114 |                 </div>
    115 |               ))}
ERROR in src/pages/GameSessionPage.tsx:34:17
TS2345: Argument of type 'User' is not assignable to parameter of type 'SetStateAction<null>'.
  Type 'User' provides no match for the signature '(prevState: null): null'.
    32 |     const unsubscribe = onAuthStateChanged(auth, (currentUser) => {
    33 |       if (currentUser) {
  > 34 |         setUser(currentUser);
       |                 ^^^^^^^^^^^
    35 |       }
    36 |     });
    37 |
ERROR in src/pages/GameSessionPage.tsx:42:35
TS7006: Parameter 'newContracts' implicitly has an 'any' type.
    40 |
    41 |     // Listen for contract updates
  > 42 |     const handleContractUpdate = (newContracts) => {
       |                                   ^^^^^^^^^^^^
    43 |       setContracts(newContracts);
    44 |     };
    45 |
ERROR in src/pages/GameSessionPage.tsx:59:25
TS2339: Property 'uid' does not exist on type 'never'.
    57 |       await socketClient.placeBid({
    58 |         gameId,
  > 59 |         playerId: user?.uid,
       |                         ^^^
    60 |         contractId,
    61 |         bidAmount: currentBid
    62 |       });
ERROR in src/pages/GameSessionPage.tsx:81:43
TS2339: Property 'id' does not exist on type 'never'.
    79 |               <List>
    80 |                 {contracts.map(contract => (
  > 81 |                   <ListItem key={contract.id}>
       |                                           ^^
    82 |                     <ListItemText
    83 |                       primary={contract.title}
    84 |                       secondary={`Base Value: SGD ${contract.baseValue}`}
ERROR in src/pages/GameSessionPage.tsx:83:41
TS2339: Property 'title' does not exist on type 'never'.
    81 |                   <ListItem key={contract.id}>
    82 |                     <ListItemText
  > 83 |                       primary={contract.title}
       |                                         ^^^^^
    84 |                       secondary={`Base Value: SGD ${contract.baseValue}`}
    85 |                     />
    86 |                     <Button
ERROR in src/pages/GameSessionPage.tsx:84:62
TS2339: Property 'baseValue' does not exist on type 'never'.
    82 |                     <ListItemText
    83 |                       primary={contract.title}
  > 84 |                       secondary={`Base Value: SGD ${contract.baseValue}`}
       |                                                              ^^^^^^^^^
    85 |                     />
    86 |                     <Button
    87 |                       variant="contained"
ERROR in src/pages/GameSessionPage.tsx:89:62
TS2339: Property 'id' does not exist on type 'never'.
    87 |                       variant="contained"
    88 |                       color="primary"
  > 89 |                       onClick={() => handlePlaceBid(contract.id)}
       |                                                              ^^
    90 |                     >
    91 |                       Bid
    92 |                     </Button>
Assistant: These errors are primarily related to TypeScript type definitions. Let's fix them by updating the type definitions and handling.

First, update the type definitions:

1. In `DashboardPage.tsx`:
```typescript
import React, { useState, useEffect } from 'react';
import { User } from 'firebase/auth';
import { getAuth, onAuthStateChanged } from 'firebase/auth';

// Update interface for GameSession
interface GameSession {
  id: string;
  players: string[];
  status: string;
}

const DashboardPage: React.FC = () => {
  const [user, setUser] = useState<User | null>(null);
  const [activeSessions, setActiveSessions] = useState<GameSession[]>([]);
  const auth = getAuth();
  const socketClient = GameSocketClient.getInstance();

  useEffect(() => {
    const unsubscribe = onAuthStateChanged(auth, (currentUser) => {
      if (currentUser) {
        setUser(currentUser);
      }
    });

    // Cleanup subscription on unmount
    return () => unsubscribe();
  }, [auth]);

  const handleCreateGame = async () => {
    try {
      const newGame = await socketClient.createGame({
        creator: user?.uid ?? '',
        players: user?.uid ? [user.uid] : []
      });
      console.log('Game created:', newGame);
    } catch (error) {
      console.error('Failed to create game', error);
    }
  };

  const handleContractSubmit = async (contractData: any) => {
    try {
      const submittedContract = await socketClient.submitContract({
        ...contractData,
        playerId: user?.uid ?? ''
      });
      console.log('Contract submitted:', submittedContract);
    } catch (error) {
      console.error('Failed to submit contract', error);
    }
  };

  return (
    <Container maxWidth="lg">
      <Typography variant="h4" gutterBottom>
        Welcome, {user?.displayName ?? 'Player'}
      </Typography>

      {/* Rest of the component remains the same */}
      <Grid item xs={12} md={6}>
        <Card>
          <CardContent>
            <Typography variant="h5">Active Game Sessions</Typography>
            {activeSessions.map(session => (
              <div key={session.id}>
                <Typography>
                  Game {session.id} - {session.status}
                </Typography>
              </div>
            ))}
          </CardContent>
        </Card>
      </Grid>
    </Container>
  );
};

export default DashboardPage;
```

2. In `GameSessionPage.tsx`:
```typescript
import React, { useState, useEffect } from 'react';
import { User } from 'firebase/auth';
import { getAuth, onAuthStateChanged } from 'firebase/auth';

// Update interface for Contract
interface Contract {
  id: string;
  title: string;
  description: string;
  baseValue: number;
}

const GameSessionPage: React.FC<{ gameId: string }> = ({ gameId }) => {
  const [user, setUser] = useState<User | null>(null);
  const [contracts, setContracts] = useState<Contract[]>([]);
  const [currentBid, setCurrentBid] = useState<number>(0);
  const auth = getAuth();
  const socketClient = GameSocketClient.getInstance();

  useEffect(() => {
    const unsubscribe = onAuthStateChanged(auth, (currentUser) => {
      if (currentUser) {
        setUser(currentUser);
      }
    });

    // Join the game session
    socketClient.joinGame(gameId);

    // Listen for contract updates
    const handleContractUpdate = (newContracts: Contract[]) => {
      setContracts(newContracts);
    };

    socketClient.onGameUpdate(handleContractUpdate);

    // Cleanup subscriptions
    return () => {
      unsubscribe();
      socketClient.cleanup();
    };
  }, [gameId, auth]);

  const handlePlaceBid = async (contractId: string) => {
    try {
      await socketClient.placeBid({
        gameId,
        playerId: user?.uid ?? '',
        contractId,
        bidAmount: currentBid
      });
    } catch (error) {
      console.error('Bid placement failed', error);
    }
  };

  return (
    <Container maxWidth="lg">
      <Typography variant="h4" gutterBottom>
        Game Session: {gameId}
      </Typography>

      <Grid container spacing={3}>
        <Grid item xs={12} md={8}>
          <Card>
            <CardContent>
              <Typography variant="h5">Available Contracts</Typography>
              <List>
                {contracts.map(contract => (
                  <ListItem key={contract.id}>
                    <ListItemText 
                      primary={contract.title}
                      secondary={`Base Value: SGD ${contract.baseValue}`}
                    />
                    <Button 
                      variant="contained" 
                      color="primary"
                      onClick={() => handlePlaceBid(contract.id)}
                    >
                      Bid
                    </Button>
                  </ListItem>
                ))}
              </List>
            </CardContent>
          </Card>
        </Grid>
      </Grid>
    </Container>
  );
};

export default GameSessionPage;
```

Key changes:
1. Import `User` type from Firebase
2. Use `useState<User | null>(null)` for user state
3. Use nullish coalescing (`??`) to provide fallback values
4. Add type annotations for contracts and game sessions
5. Properly type the `handleContractUpdate` function
6. Add cleanup for auth state listener

These changes should resolve the TypeScript errors by:
- Properly typing the user state
- Providing fallback values
- Adding type annotations
- Handling potential undefined values

Make sure you have the necessary imports at the top of each file:
```typescript
import { User } from 'firebase/auth';
import { getAuth, onAuthStateChanged } from 'firebase/auth';
```

Would you like me to explain any of these changes in more detail?
User: hi, right now the dashboard is very empty - there is nothing to do there. I want options to create a game, join games, etc... and I want it to be FULLY functional, i.e. no placeholder code is allowed.

please make the necessary edits. if you need to add functionality to other files, just state clearly which file, and the addition.
Assistant: