project-nomad/admin/inertia/lib/util.ts

import axios from "axios";

export function capitalizeFirstLetter(str?: string | null): string {
    if (!str) return "";
    return str.charAt(0).toUpperCase() + str.slice(1);
}

export async function testInternetConnection(): Promise<boolean> {
    try {
        const response = await axios.get('https://1.1.1.1/cdn-cgi/trace', {
            timeout: 5000,
            headers: {
                'Cache-Control': 'no-cache',
            }
        });
        return response.status === 200;
    } catch (error) {
        console.error("Error testing internet connection:", error);
        return false;
    }
}

export function generateRandomString(length: number): string {
    const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let result = '';
    for (let i = 0; i < length; i++) {
        result += characters.charAt(Math.floor(Math.random() * characters.length));
    }
    return result;
}

export function generateUUID(): string {
  const arr = new Uint8Array(16);
  if (window.crypto && window.crypto.getRandomValues) {
    window.crypto.getRandomValues(arr);
  } else {
    // Fallback for non-secure contexts where window.crypto is not available
    // This is not cryptographically secure, but can be used for non-critical purposes
    for (let i = 0; i < 16; i++) {
      arr[i] = Math.floor(Math.random() * 256);
    }
  }
  
  arr[6] = (arr[6] & 0x0f) | 0x40; // Version 4
  arr[8] = (arr[8] & 0x3f) | 0x80; // Variant bits
  
  const hex = Array.from(arr, byte => byte.toString(16).padStart(2, '0')).join('');
  return `${hex.slice(0,8)}-${hex.slice(8,12)}-${hex.slice(12,16)}-${hex.slice(16,20)}-${hex.slice(20)}`;
}