/*
 * This file is part of SubTypo.
 *
 * SubTypo is free software: you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * SubTypo is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with SubTypo.
 * If not, see <https://www.gnu.org/licenses/>.
 */

package com.teixeira0x.subtypo.build

import java.io.File

/**
 * Information about the CI build.
 *
 * @author Akash Yadav
 */
object CI {

  /** The short commit hash. */
  val commitHash by lazy {
    val sha = System.getenv("GITHUB_SHA") ?: return@lazy ""
    shortSha(sha)
  }

  /** Name of the current branch. */
  val branchName by lazy {
    System.getenv("GITHUB_REF_NAME") ?: "dev" // by default, 'dev'
  }

  /** Whether the current build is a CI build. */
  val isCiBuild by lazy { "true" == System.getenv("CI") }

  private fun shortSha(sha: String): String {
    return ProcessBuilder("git", "rev-parse", "--short", sha)
      .directory(File("."))
      .redirectErrorStream(true)
      .start()
      .inputStream
      .bufferedReader()
      .readText()
      .trim()
  }
}
