import { StateSetAgent } from '@stateset/agent-sdk';
import { DirectSecp256k1Wallet } from '@cosmjs/proto-signing';

// Generate agent wallet
const mnemonic = await generateMnemonic();
const wallet = await DirectSecp256k1Wallet.fromMnemonic(mnemonic, {
  prefix: 'stateset',
});

// Initialize agent with identity
const agent = new StateSetAgent({
  wallet,
  endpoint: 'https://rpc.stateset.network',
  agentConfig: {
    id: 'agent_001',
    name: 'Procurement Bot',
    type: 'trading',
    permissions: ['order.create', 'payment.execute']
  }
});

// Secure key storage for production agents
class AgentKeyManager {
  private kms: KeyManagementService;
  
  async initializeWallet() {
    // Use HSM or secure enclave for production
    const privateKey = await this.kms.generateKey({
      algorithm: 'secp256k1',
      usage: ['sign', 'verify']
    });
    
    // Derive public key and address
    const publicKey = await this.kms.getPublicKey(privateKey);
    const address = deriveAddress(publicKey, 'stateset');
    
    return {
      address,
      sign: async (message: Uint8Array) => {
        return this.kms.sign(privateKey, message);
      }
    };
  }
}

// Monitor and manage USDC balance
class USDCTreasury {
  constructor(private agent: StateSetAgent) {}
  
  async getBalance(): Promise<Balance> {
    return await this.agent.bank.balance({
      address: this.agent.address,
      denom: 'usdc'
    });
  }
  
  async ensureSufficientBalance(amount: string) {
    const balance = await this.getBalance();
    if (balance.amount < amount) {
      // Trigger refill from treasury or alert
      await this.requestRefill(amount - balance.amount);
    }
  }
  
  async requestRefill(deficit: string) {
    // Implement treasury management logic
    await this.agent.events.emit({
      type: 'treasury.refill_required',
      data: { deficit, agent_id: this.agent.id }
    });
  }
}

// Autonomous payment execution
class PaymentAgent {
  async executePayment(params: PaymentParams) {
    try {
      // Pre-flight checks
      await this.validatePayment(params);
      await this.ensureBalance(params.amount);
      
      // Execute payment
      const result = await this.agent.orders.pay({
        order_id: params.orderId,
        payment_method: {
          type: 'usdc',
          amount: {
            value: params.amount,
            denom: 'usdc'
          }
        },
        memo: `Agent payment: ${this.agent.id}`
      });
      
      // Post-payment actions
      await this.logTransaction(result);
      await this.updateInventory(params.orderId);
      
      return result;
    } catch (error) {
      await this.handlePaymentError(error);
    }
  }
}

// End-to-end order automation
class ProcurementAgent {
  async createAndPayOrder(supplier: Supplier, items: Item[]) {
    // Create order
    const order = await this.agent.orders.create({
      supplier_id: supplier.id,
      items: items.map(item => ({
        product_id: item.id,
        quantity: item.quantity,
        unit_price: item.price
      })),
      payment_terms: 'immediate',
      delivery_address: this.config.warehouse_address
    });
    
    // Calculate total with tax and fees
    const total = await this.calculateTotal(order);
    
    // Execute payment atomically
    const payment = await this.agent.transactions.execute({
      messages: [{
        type: 'order/pay',
        order_id: order.id,
        amount: total
      }],
      fee: {
        amount: '0.01',
        denom: 'usdc'
      },
      memo: `Auto-payment for order ${order.id}`
    });
    
    return { order, payment };
  }
}

// Multi-agent approval workflows
class MultiSigAgent {
  private signers: AgentSigner[];
  private threshold: number;
  
  async executeMultiSigPayment(params: PaymentParams) {
    // Create multi-sig transaction
    const tx = await this.createTransaction(params);
    
    // Collect signatures from agent network
    const signatures = await Promise.all(
      this.signers.map(async (signer) => {
        const decision = await signer.evaluateTransaction(tx);
        if (decision.approve) {
          return signer.sign(tx);
        }
        return null;
      })
    );
    
    // Check threshold
    const validSigs = signatures.filter(sig => sig !== null);
    if (validSigs.length >= this.threshold) {
      // Broadcast transaction
      return await this.agent.broadcast(tx, validSigs);
    }
    
    throw new Error('Insufficient signatures');
  }
}

// React to on-chain events
class EventDrivenAgent {
  constructor(private agent: StateSetAgent) {
    this.setupEventListeners();
  }
  
  private setupEventListeners() {
    // Subscribe to order events
    this.agent.events.subscribe({
      type: 'order.created',
      filter: { supplier_id: this.config.supplier_id },
      handler: async (event) => {
        await this.handleNewOrder(event);
      }
    });
    
    // Subscribe to payment requests
    this.agent.events.subscribe({
      type: 'invoice.created',
      filter: { recipient: this.agent.address },
      handler: async (event) => {
        await this.processInvoice(event);
      }
    });
  }
  
  async handleNewOrder(event: OrderEvent) {
    // Analyze order
    const analysis = await this.analyzeOrder(event.order);
    
    if (analysis.shouldAccept) {
      // Auto-accept and process
      await this.agent.orders.accept({
        order_id: event.order.id,
        estimated_delivery: analysis.deliveryDate
      });
    }
  }
}

// Market-making agent
class MarketMakerAgent {
  private priceFeeds: PriceFeed[];
  
  async monitorAndTrade() {
    // Subscribe to price updates
    this.priceFeeds.forEach(feed => {
      feed.subscribe(async (price) => {
        const opportunity = await this.findArbitrage(price);
        if (opportunity) {
          await this.executeTrade(opportunity);
        }
      });
    });
  }
  
  async executeTrade(opportunity: ArbitrageOpp) {
    // Create atomic swap
    const swap = await this.agent.dex.swap({
      offer: {
        amount: opportunity.inputAmount,
        denom: 'usdc'
      },
      ask: {
        amount: opportunity.expectedOutput,
        denom: opportunity.outputDenom
      },
      slippage: 0.005, // 0.5%
      deadline: Date.now() + 60000 // 1 minute
    });
    
    return swap;
  }
}

// Coordinate multiple agents for complex workflows
class AgentOrchestrator {
  private agents: Map<string, StateSetAgent>;
  
  async executeWorkflow(workflow: Workflow) {
    const dag = this.buildDAG(workflow);
    
    // Execute tasks in topological order
    for (const stage of dag.stages) {
      await Promise.all(
        stage.tasks.map(async (task) => {
          const agent = this.agents.get(task.agentId);
          return agent.execute(task);
        })
      );
    }
  }
  
  async negotiateTerms(buyers: Agent[], sellers: Agent[]) {
    // Implement automated negotiation protocol
    const bids = await Promise.all(
      buyers.map(b => b.submitBid())
    );
    
    const asks = await Promise.all(
      sellers.map(s => s.submitAsk())
    );
    
    // Match orders using smart routing
    return this.matchOrders(bids, asks);
  }
}

// Agent that manages its own revenue
class AutonomousServiceAgent {
  private revenue: string = '0';
  private expenses: string = '0';
  
  async provideService(request: ServiceRequest) {
    // Quote price based on resource usage
    const quote = await this.calculateQuote(request);
    
    // Request payment
    const invoice = await this.agent.invoices.create({
      amount: quote.total,
      denom: 'usdc',
      due_date: Date.now() + 3600000, // 1 hour
      services: quote.breakdown
    });
    
    // Wait for payment
    const payment = await this.waitForPayment(invoice.id);
    
    // Execute service
    const result = await this.executeService(request);
    
    // Update financials
    this.revenue = addAmount(this.revenue, payment.amount);
    
    return result;
  }
  
  async manageOperatingExpenses() {
    // Pay for compute resources
    if (this.needsMoreCompute()) {
      await this.purchaseCompute();
    }
    
    // Distribute profits
    if (this.revenue > this.targetReserve) {
      await this.distributeProfit();
    }
  }
}

// Implement risk controls for agent operations
class RiskManagedAgent {
  private riskLimits: RiskLimits;
  private exposureTracker: ExposureTracker;
  
  async executeWithRiskControl(operation: Operation) {
    // Check exposure limits
    const currentExposure = await this.exposureTracker.calculate();
    const projectedExposure = currentExposure + operation.amount;
    
    if (projectedExposure > this.riskLimits.maxExposure) {
      throw new Error('Exposure limit exceeded');
    }
    
    // Check velocity limits
    const recentVolume = await this.getRecentVolume();
    if (recentVolume + operation.amount > this.riskLimits.dailyLimit) {
      throw new Error('Daily limit exceeded');
    }
    
    // Execute with circuit breaker
    return await this.circuitBreaker.execute(async () => {
      const result = await operation.execute();
      await this.exposureTracker.update(operation);
      return result;
    });
  }
}

// Secure key management for agents
class SecureAgentWallet {
  // Never store private keys in code or environment variables
  static async initialize() {
    // Use hardware security modules
    const hsm = await HSM.connect({
      endpoint: process.env.HSM_ENDPOINT,
      credentials: await getHSMCredentials()
    });
    
    // Generate key in HSM
    const keyId = await hsm.generateKey({
      algorithm: 'secp256k1',
      extractable: false
    });
    
    return new SecureAgentWallet(hsm, keyId);
  }
  
  async sign(message: Uint8Array): Promise<Signature> {
    // Sign within HSM, key never leaves secure enclave
    return await this.hsm.sign(this.keyId, message);
  }
}

// Validate all transactions before execution
class TransactionValidator {
  async validate(tx: Transaction): Promise<ValidationResult> {
    const checks = await Promise.all([
      this.checkWhitelist(tx.recipient),
      this.checkAmount(tx.amount),
      this.checkFrequency(tx.sender),
      this.scanForAnomalies(tx)
    ]);
    
    return {
      valid: checks.every(c => c.passed),
      issues: checks.filter(c => !c.passed)
    };
  }
  
  private async checkWhitelist(address: string) {
    // Only transact with verified addresses
    return this.whitelist.includes(address);
  }
  
  private async scanForAnomalies(tx: Transaction) {
    // ML-based anomaly detection
    const score = await this.anomalyDetector.score(tx);
    return score < this.threshold;
  }
}

// Real-time monitoring for agent health
class AgentMonitor {
  async setupMonitoring() {
    // Track key metrics
    this.metrics.gauge('usdc_balance', async () => {
      return await this.agent.getBalance();
    });
    
    this.metrics.counter('transactions_total');
    this.metrics.histogram('transaction_amount');
    
    // Set up alerts
    this.alerts.rule({
      name: 'low_balance',
      condition: 'usdc_balance < 100',
      action: async () => {
        await this.notifyOps('Agent balance critically low');
        await this.pauseAgent();
      }
    });
    
    // Audit logging
    this.agent.on('transaction', async (tx) => {
      await this.auditLog.record({
        timestamp: Date.now(),
        agent_id: this.agent.id,
        action: 'transaction',
        details: tx,
        signature: await this.sign(tx)
      });
    });
  }
}

// Test agent behavior in isolation
describe('PaymentAgent', () => {
  let agent: PaymentAgent;
  let mockNetwork: MockStateSetNetwork;
  
  beforeEach(() => {
    mockNetwork = new MockStateSetNetwork();
    agent = new PaymentAgent({
      network: mockNetwork,
      wallet: MockWallet.generate()
    });
  });
  
  test('should execute payment within limits', async () => {
    // Arrange
    const order = mockNetwork.createOrder({
      amount: '50.00',
      status: 'pending'
    });
    
    // Act
    const result = await agent.payOrder(order.id);
    
    // Assert
    expect(result.success).toBe(true);
    expect(mockNetwork.getOrder(order.id).status).toBe('paid');
  });
  
  test('should reject payment above limit', async () => {
    // Arrange
    const order = mockNetwork.createOrder({
      amount: '10000.00',
      status: 'pending'
    });
    
    // Act & Assert
    await expect(agent.payOrder(order.id))
      .rejects.toThrow('Payment exceeds agent limit');
  });
});

// Test against StateSet testnet
describe('Agent Integration', () => {
  let agent: StateSetAgent;
  
  beforeAll(async () => {
    agent = await StateSetAgent.connect({
      endpoint: 'https://testnet-rpc.stateset.network',
      wallet: await TestWallet.fromFaucet()
    });
  });
  
  test('end-to-end order flow', async () => {
    // Create test order
    const order = await agent.orders.create({
      items: [{ product_id: 'test_001', quantity: 1 }],
      payment_method: 'usdc'
    });
    
    // Execute payment
    const payment = await agent.orders.pay({
      order_id: order.id,
      amount: order.total
    });
    
    // Verify on-chain
    const onChainOrder = await agent.orders.get(order.id);
    expect(onChainOrder.payment_status).toBe('paid');
    expect(onChainOrder.payment_tx).toBe(payment.tx_hash);
  });
});

// Simulate agent behavior under various conditions
class AgentSimulator {
  async runSimulation(config: SimulationConfig) {
    const agents = await this.spawnAgents(config.agentCount);
    const market = new SimulatedMarket(config.marketConditions);
    
    // Run simulation
    const results = await this.simulate({
      agents,
      market,
      duration: config.duration,
      scenarios: config.scenarios
    });
    
    // Analyze results
    return {
      totalVolume: results.reduce((sum, r) => sum + r.volume, 0),
      successRate: results.filter(r => r.success).length / results.length,
      averageLatency: this.calculateAvgLatency(results),
      profitability: this.calculateProfitability(results)
    };
  }
}

// Initialize agent session
POST /v1/agents/session
{
  "agent_id": "agent_001",
  "signature": "0x...",
  "permissions": ["order.create", "payment.execute"]
}

// Execute batch operations
POST /v1/agents/batch
{
  "agent_id": "agent_001",
  "operations": [
    {
      "type": "order.create",
      "params": { ... }
    },
    {
      "type": "payment.execute",
      "params": { ... }
    }
  ],
  "atomic": true
}

// Query agent transactions
GET /v1/agents/{agent_id}/transactions
?start_time=2024-01-01T00:00:00Z
&end_time=2024-01-31T23:59:59Z
&status=success

// Subscribe to events
WebSocket /v1/agents/{agent_id}/events
{
  "subscribe": [
    "order.matched",
    "payment.received",
    "balance.low"
  ]
}

// Automated inventory replenishment
class InventoryAgent {
  async monitorAndReplenish() {
    const inventory = await this.getInventoryLevels();
    
    for (const item of inventory) {
      if (item.quantity <= item.reorderPoint) {
        // Find best supplier
        const suppliers = await this.findSuppliers(item.sku);
        const bestOffer = await this.negotiatePrice(suppliers, item);
        
        // Create and pay order
        const order = await this.createOrder(bestOffer);
        await this.payWithUSDC(order);
        
        // Update tracking
        await this.updateInventoryForecast(item, order);
      }
    }
  }
}

// Yield optimization agent
class YieldAgent {
  async optimizeYield(balance: string) {
    // Find best lending rates
    const opportunities = await this.scanLendingMarkets();
    
    // Calculate optimal allocation
    const allocation = this.optimizer.allocate(balance, opportunities);
    
    // Execute lending positions
    for (const position of allocation) {
      await this.lendUSDC({
        protocol: position.protocol,
        amount: position.amount,
        duration: position.duration
      });
    }
    
    // Monitor and rebalance
    this.scheduleRebalancing(allocation);
  }
}

// International payment agent
class CrossBorderAgent {
  async executePayment(payment: InternationalPayment) {
    // Compliance checks
    await this.runComplianceChecks(payment);
    
    // Convert to USDC
    const usdcAmount = await this.convertToUSDC(
      payment.amount,
      payment.sourceCurrency
    );
    
    // Execute transfer
    const transfer = await this.agent.ibc.transfer({
      channel: payment.destinationChain,
      recipient: payment.recipient,
      amount: usdcAmount,
      memo: payment.reference
    });
    
    // Notify recipient
    await this.notifyRecipient(transfer);
    
    return transfer;
  }
}