package gs

import sbt._
import scala.util.Try

/** Helper for managing all SBT command line properties (`-Dproperty=value`).
  */
object PluginProperties {

  /** Helper to extract the value from `-Dproperty=value`.
    *
    * @param name
    *   The property name.
    * @param conv
    *   The conversion function to the output type.
    * @return
    *   The converted value, or `None` if no value exists.
    */
  def getProperty[A](
    name: String,
    conv: String => A
  ): Option[A] =
    Option(System.getProperty(name)).map(conv)

    /** Use one of the following to calculate an incremented release version:
      *
      *   - `sbt -Drelease=true`
      *   - `sbt -Drelease=false`
      */
    val ReleaseProperty: String = "release"

    /** The value of `-Drelease=<true|false>`, parsed and validated.
      *
      * If no value is specified, `false` is assumed.
      *
      * @return
      *   The `release` setting passed as input to SBT.
      */
    def isRelease(): Boolean =
      getProperty(
        ReleaseProperty,
        raw => Try(raw.toBoolean).getOrElse(false)
      ).getOrElse(false)

}