@not-true/devtools/src/utils/QueueManager.ts

Remote debugging and development tools client library for React Native applications

import { QueueItem } from '../types';

export class QueueManager {
  private queue: QueueItem[] = [];
  private maxSize: number;

  constructor(maxSize: number = 1000) {
    this.maxSize = maxSize;
  }

  /**
   * Add an item to the queue
   */
  enqueue(item: QueueItem): void {
    // Remove oldest items if queue is at max capacity
    while (this.queue.length >= this.maxSize) {
      this.queue.shift();
    }

    this.queue.push(item);
  }

  /**
   * Remove and return the oldest item from the queue
   */
  dequeue(): QueueItem | null {
    return this.queue.shift() || null;
  }

  /**
   * Check if the queue is empty
   */
  isEmpty(): boolean {
    return this.queue.length === 0;
  }

  /**
   * Get the current queue size
   */
  size(): number {
    return this.queue.length;
  }

  /**
   * Clear all items from the queue
   */
  clear(): void {
    this.queue = [];
  }

  /**
   * Get all items in the queue without removing them
   */
  getAll(): QueueItem[] {
    return [...this.queue];
  }

  /**
   * Remove items older than the specified timestamp
   */
  removeOldItems(maxAge: number): void {
    const cutoffTime = Date.now() - maxAge;
    this.queue = this.queue.filter(item => item.timestamp >= cutoffTime);
  }

  /**
   * Get queue statistics
   */
  getStats(): {
    size: number;
    maxSize: number;
    oldestItem: QueueItem | null;
    newestItem: QueueItem | null;
  } {
    return {
      size: this.queue.length,
      maxSize: this.maxSize,
      oldestItem: this.queue[0] || null,
      newestItem: this.queue[this.queue.length - 1] || null,
    };
  }
}