// Helper function to convert bech32 to hex
export function bech32ToHex(bech32Key: string): string {
  if (bech32Key.startsWith('npub1') || bech32Key.startsWith('nsec1')) {
    // Import bech32 conversion dynamically to avoid bundling issues
    const { bech32Decode, convertbits } = require('bech32')
    const [, data] = bech32Decode(bech32Key)
    if (!data) {
      throw new Error(`Invalid bech32 key: ${bech32Key}`)
    }
    const converted = convertbits(data, 5, 8, false)
    if (!converted) {
      throw new Error(`Failed to convert bech32 key: ${bech32Key}`)
    }
    return Buffer.from(converted).toString('hex')
  }
  // Already hex format
  return bech32Key
}