package gs.blob.v0

import java.util.Base64

opaque type Blob = Array[Byte]

object Blob:

  private val Hex: String = "0123456789abcdef";

  def apply(data: Array[Byte]): Blob = data

  given CanEqual[Blob, Blob] = CanEqual.derived

  extension (blob: Blob)
    def toByteArray(): Array[Byte] = blob

    def toBase64(): String = Base64.getEncoder().encodeToString(blob)

    // TODO: Hex library
    def toHex(): String =
      var index           = 0
      val ch: Array[Char] = new Array(blob.length * 2)
      blob.foreach { byte =>
        ch(index) = Hex.charAt((byte & 0xf0) >> 4)
        ch(index + 1) = Hex.charAt(byte & 0x0f)
        index = index + 2
      }

      new String(ch)

end Blob