dagger.hilt.android.plugin.util.SimpleAGPVersion.kt Maven / Gradle / Ivy

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package dagger.hilt.android.plugin.util

/**
 * Simple Android Gradle Plugin version class since there is no public API one. b/175816217
 */
internal data class SimpleAGPVersion(
  val major: Int,
  val minor: Int,
) : Comparable {

  override fun compareTo(other: SimpleAGPVersion): Int {
    return compareValuesBy(
      this,
      other,
      compareBy(SimpleAGPVersion::major).thenBy(SimpleAGPVersion::minor)
    ) { it }
  }

  companion object {

    // TODO(danysantiago): Migrate to AndroidPluginVersion once it is available (b/175816217)
    val ANDROID_GRADLE_PLUGIN_VERSION by lazy {
      val clazz =
        findClass("com.android.Version")
          ?: findClass("com.android.builder.model.Version")
      if (clazz != null) {
        return@lazy parse(clazz.getField("ANDROID_GRADLE_PLUGIN_VERSION").get(null) as String)
      }
      error(
        "Unable to obtain AGP version. It is likely that the AGP version being used is too old."
      )
    }

    fun parse(version: String?) =
      tryParse(version) ?: error("Unable to parse AGP version: $version")

    private fun tryParse(version: String?): SimpleAGPVersion? {
      if (version == null) {
        return null
      }

      val parts = version.split('.')
      if (parts.size == 1) {
        return SimpleAGPVersion(parts[0].toInt(), 0)
      }

      return SimpleAGPVersion(parts[0].toInt(), parts[1].toInt())
    }
  }
}