test_min8.ts

/**
 * Blockchain Demo Application
 *
 * This is a demonstration application that showcases TypeScript features
 * and library usage patterns for testing the Compilets TypeScript compiler.
 *
 * IMPORTANT: This is NOT a real blockchain application. All data is simulated
 * and no actual blockchain interactions occur.
 */

import { EventEmitter } from 'events';
import { ethers } from 'ethers';
import WebSocket from 'ws';
import Redis from 'ioredis';
import { LRUCache } from 'lru-cache';
import { createPublicClient, http, parseAbiItem } from 'viem';
import { mainnet } from 'viem/chains';
import Big from 'big.js';
import Decimal from 'decimal.js-light';
import JSBI from 'jsbi';
import invariant from 'tiny-invariant';
import { backOff } from 'exponential-backoff';
import { Command } from 'commander';
import 'dotenv/config';

// ============================================================================
// Type Definitions
// ============================================================================

/** Supported blockchain networks */
type NetworkName = 'ethereum' | 'polygon' | 'arbitrum' | 'optimism' | 'base';

/** Connection tier for WebSocket subscriptions */
type TierType = 'premium' | 'standard';

/** Asset types in the demo */
type AssetType = 'token' | 'nft' | 'liquidity_position';

/** Order status in the simulated order book */
type OrderStatus = 'pending' | 'filled' | 'cancelled' | 'expired';

/** Log event from blockchain subscription */
interface LogEvent {
  address: string;
  topics: string[];
  data: string;
  blockNumber: string;
  transactionHash: string;
  logIndex: string;
  removed: boolean;
}

/** Processed event with context */
interface ProcessedEvent {
  network: NetworkName;
  contractAddress: string;
  transactionHash: string;
  blockNumber: number;
  eventSignature: string;
  data: string;
  topics: string[];
  timestamp: number;
  source: TierType;
}

/** Connection status for monitoring */
interface ConnectionStatus {
  connected: boolean;
  network: NetworkName;
  subscriptionId: string | null;
  lastMessageTime: number;
  messageCount: number;
  reconnectCount: number;
}

/** Simulated gas price data */
interface GasPriceData {
  baseFeePerGas: string;
  maxPriorityFeePerGas: string;
  maxFeePerGas: string;
  gasPrice: string;
  timestamp: number;
  isLegacy: boolean;
}

/** Configuration for the demo application */
interface DemoConfig {
  networks: NetworkName[];
  cacheSize: number;
  reconnectAttempts: number;
  healthCheckInterval: number;
  simulationMode: boolean;
}

// ============================================================================
// Data Classes
// ============================================================================

/**
 * Represents a token in the demo system
 */
export class TokenData {
  public symbol: string;
  public address: string;
  public decimals: number;
  public name: string;
  public id: number | null;

  constructor(
    symbol: string,
    address: string,
    decimals: number,
    name: string,
    id: number | null = null
  ) {
    this.symbol = symbol;
    this.address = address;
    this.decimals = decimals;
    this.name = name;
    this.id = id;
  }

  /** Format a raw amount to human-readable string */
  public formatAmount(rawAmount: bigint): string {
    return ethers.formatUnits(rawAmount, this.decimals);
  }

  /** Parse a human-readable amount to raw bigint */
  public parseAmount(amount: string): bigint {
    return ethers.parseUnits(amount, this.decimals);
  }
}

/**
 * Represents a liquidity pool between two tokens
 */
export class PoolData {
  public id: number;
  public token1: TokenData;
  public token2: TokenData;
  public network: NetworkName;
  public pairAddress: string;
  public reserve1: bigint;
  public reserve2: bigint;
  public fee: bigint;
  public liquidity: bigint;
  public tick: bigint;
  public sqrtRatioX96: bigint;
  public lastUpdate: Date;
  public isActive: boolean;

  constructor(data: Partial<PoolData> = {}) {
    this.id = data.id ?? 0;
    this.token1 = data.token1 ?? new TokenData('', '', 18, '');
    this.token2 = data.token2 ?? new TokenData('', '', 18, '');
    this.network = data.network ?? 'ethereum';
    this.pairAddress = data.pairAddress ?? '';
    this.reserve1 = data.reserve1 ?? 0n;
    this.reserve2 = data.reserve2 ?? 0n;
    this.fee = data.fee ?? 3000n; // 0.3% default
    this.liquidity = data.liquidity ?? 0n;
    this.tick = data.tick ?? 0n;
    this.sqrtRatioX96 = data.sqrtRatioX96 ?? 0n;
    this.lastUpdate = data.lastUpdate ?? new Date();
    this.isActive = data.isActive ?? true;
  }

  /** Calculate the price of token1 in terms of token2 */
  public getPrice(): number {
    if (this.reserve2 === 0n) return 0;
    const r1 = Number(this.reserve1) / Math.pow(10, this.token1.decimals);
    const r2 = Number(this.reserve2) / Math.pow(10, this.token2.decimals);
    return r2 / r1;
  }

  /** Get total value locked in USD (simulated) */
  public getTVL(): Big {
    // Simulated TVL calculation
    const simulatedPrice = 1000; // Pretend token1 is worth $1000
    const r1 = new Big(this.reserve1.toString()).div(Math.pow(10, this.token1.decimals));
    return r1.times(simulatedPrice).times(2); // TVL = 2 * reserve1 value
  }
}

/**
 * Represents a simulated order in the demo order book
 */
export class Order {
  public id: string;
  public network: NetworkName;
  public tokenIn: TokenData;
  public tokenOut: TokenData;
  public amountIn: bigint;
  public amountOutMin: bigint;
  public deadline: number;
  public status: OrderStatus;
  public createdAt: Date;
  public executedAt: Date | null;
  public transactionHash: string | null;

  constructor(
    id: string,
    network: NetworkName,
    tokenIn: TokenData,
    tokenOut: TokenData,
    amountIn: bigint,
    amountOutMin: bigint,
    deadline: number
  ) {
    this.id = id;
    this.network = network;
    this.tokenIn = tokenIn;
    this.tokenOut = tokenOut;
    this.amountIn = amountIn;
    this.amountOutMin = amountOutMin;
    this.deadline = deadline;
    this.status = 'pending';
    this.createdAt = new Date();
    this.executedAt = null;
    this.transactionHash = null;
  }

  /** Check if the order has expired */
  public isExpired(): boolean {
    return Date.now() / 1000 > this.deadline;
  }

  /** Mark order as filled */
  public fill(transactionHash: string): void {
    this.status = 'filled';
    this.executedAt = new Date();
    this.transactionHash = transactionHash;
  }

  /** Mark order as cancelled */
  public cancel(): void {
    this.status = 'cancelled';
  }
}

// ============================================================================
// WebSocket Connection Manager
// ============================================================================

/**
 * Manages WebSocket connections for blockchain event subscriptions.
 * This is a demonstration class - no actual connections are made.
 */
class DemoWebSocketConnection extends EventEmitter {
  private ws: WebSocket | null = null;
  private network: NetworkName;
  private tier: TierType;
  private subscriptionId: string | null = null;
  private reconnectAttempts: number = 0;
  private maxReconnectAttempts: number;
  private reconnectDelay: number = 5000;
  private isShuttingDown: boolean = false;
  private healthCheckInterval: NodeJS.Timeout | null = null;

  // Statistics
  private messageCount: number = 0;
  private lastMessageTime: number = 0;
  private reconnectCount: number = 0;

  constructor(network: NetworkName, tier: TierType, maxReconnectAttempts: number = 5) {
    super();
    this.network = network;
    this.tier = tier;
    this.maxReconnectAttempts = maxReconnectAttempts;
  }

  /**
   * Simulate connecting to a WebSocket endpoint
   */
  public async connect(): Promise<boolean> {
    if (this.isShuttingDown) {
      return false;
    }

    console.log(`[${this.network}] [${this.tier}] Simulating WebSocket connection...`);

    // Simulate connection delay
    await sleep(100);

    // Simulate successful connection
    this.subscriptionId = `demo-sub-${Date.now()}`;
    this.lastMessageTime = Date.now();
    this.reconnectAttempts = 0;

    console.log(`[${this.network}] [${this.tier}] Connected (simulated)`);

    // Start simulated event generation
    this.startSimulatedEvents();
    this.startHealthCheck();

    return true;
  }

  /**
   * Generate simulated blockchain events
   */
  private startSimulatedEvents(): void {
    const eventInterval = setInterval(() => {
      if (this.isShuttingDown) {
        clearInterval(eventInterval);
        return;
      }

      // Generate a fake event every 5 seconds
      const event: ProcessedEvent = {
        network: this.network,
        contractAddress: `0x${randomHex(40)}`,
        transactionHash: `0x${randomHex(64)}`,
        blockNumber: Math.floor(Math.random() * 1000000) + 18000000,
        eventSignature: '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
        data: `0x${randomHex(64)}`,
        topics: [`0x${randomHex(64)}`, `0x${randomHex(64)}`],
        timestamp: Date.now(),
        source: this.tier,
      };

      this.messageCount++;
      this.lastMessageTime = Date.now();
      this.emit('event', event);
    }, 5000);
  }

  /**
   * Start periodic health checks
   */
  private startHealthCheck(): void {
    this.healthCheckInterval = setInterval(() => {
      const timeSinceLastMessage = Date.now() - this.lastMessageTime;
      if (timeSinceLastMessage > 30000) {
        console.warn(`[${this.network}] No messages for ${timeSinceLastMessage}ms`);
      }
    }, 10000);
  }

  /**
   * Get current connection status
   */
  public getStatus(): ConnectionStatus {
    return {
      connected: this.subscriptionId !== null,
      network: this.network,
      subscriptionId: this.subscriptionId,
      lastMessageTime: this.lastMessageTime,
      messageCount: this.messageCount,
      reconnectCount: this.reconnectCount,
    };
  }

  /**
   * Disconnect and cleanup
   */
  public disconnect(): void {
    this.isShuttingDown = true;

    if (this.healthCheckInterval) {
      clearInterval(this.healthCheckInterval);
    }

    this.subscriptionId = null;
    console.log(`[${this.network}] [${this.tier}] Disconnected`);
  }
}
}
console.log("Test");