Compression enum example

compression.kt

enum class Compression(val id: String) {
    Off("off"),
    Zlib("zlib");

    companion object {

        fun fromString(id: String) = Compression::string.find(id)

            ?: throw IllegalArgumentException("Bad compression method: '$id'")

    }

}

enum class Environment { DEV, TEST, PROD }

class CompressionPreferences(env : Environment) {

    val defaultAlgorithm : when(env) {
        DEV, TEST -> Compression.Off
        PROD -> Compression.Zlib
    }
}


class CompressionService(val prefs: CompressionPreferences) {

    fun compress(input : String, compressionAlgorithm : Compression = prefs.defaultAlgorithm) : String {

        return when(compressionAlgorithm) {
          Compression.Off -> input;
          Compression.Zlib -> { 
            try {
                myZlibLibrary.compress(input)
            } catch (ex : Exception) {
                log.error("Failure compressing due to", ex)
                return ""
            }
          }
    }
}