class Par2 < Formula
  desc "Parchive: Parity Archive Volume Set for data recovery"
  homepage "https://github.com/Parchive/par2cmdline"
  url "https://github.com/Parchive/par2cmdline/releases/download/v0.8.1/par2cmdline-0.8.1.tar.bz2"
  sha256 "5fcd712cae2b73002b0bf450c939b211b3d1037f9bb9c3ae52d6d24a0ba075e4"
  license "GPL-2.0"

  livecheck do
    url "https://github.com/Parchive/par2cmdline/releases/latest"
    regex(%r{href=.*?/tag/v?(\d+(?:\.\d+)+)["' >]}i)
  end

  bottle do
    cellar :any_skip_relocation
    sha256 "26609c45028599a4845f68cda2a5cd08c2a0dc37ae3987d4abf86aed99499f50" => :catalina
    sha256 "cded10d8f18c5ab236ceb624854afb672681bd1a86f21e47d70de793db378580" => :mojave
    sha256 "35477bcfecd91b7fe885739737f576b63545aab51ba997bc60f9a74927b775dc" => :high_sierra
  end

  def install
    system "./configure", "--prefix=#{prefix}"
    system "make", "install"
  end

  test do
    # Protect a file with par2.
    test_file = testpath/"some-file"
    File.write(test_file, "file contents")
    system "#{bin}/par2", "create", test_file

    # "Corrupt" the file by overwriting, then ask par2 to repair it.
    File.write(test_file, "corrupted contents")
    repair_command_output = shell_output("#{bin}/par2 repair #{test_file}")

    # Verify that par2 claimed to repair the file.
    assert_match "1 file(s) exist but are damaged.", repair_command_output
    assert_match "Repair complete.", repair_command_output

    # Verify that par2 actually repaired the file.
    assert File.read(test_file) == "file contents"
  end
end