// Cross-platform unique ID generator for correlation IDs
// Works in browsers, Node.js, and React Native

let counter = 0

export const generateCorrelationId = (): string => {
  // Try crypto.randomUUID() first (modern browsers, Node 19+)
  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
    return crypto.randomUUID()
  }

  // Fallback: crypto.getRandomValues (browsers, React Native with crypto polyfill)
  if (typeof crypto !== 'undefined' && typeof crypto.getRandomValues === 'function') {
    const array = new Uint8Array(16)
    crypto.getRandomValues(array)
    return Array.from(array, (byte) => byte.toString(16).padStart(2, '0')).join('')
  }

  // Last resort fallback: timestamp + counter + random
  // More entropy than original: includes incrementing counter
  counter = (counter + 1) % 1000000
  return `${Date.now()}-${counter}-${Math.random().toString(36).substring(2, 15)}`
}