class Fzf < Formula
  desc "Command-line fuzzy finder written in Go"
  homepage "https://github.com/junegunn/fzf"
  url "https://github.com/junegunn/fzf/archive/0.17.4.tar.gz"
  sha256 "a4b009638266b116f422d159cd1e09df64112e6ae3490964db2cd46636981ff0"
  head "https://github.com/junegunn/fzf.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "e2841080668785f569b197656b7dd2e7df32842ebaed19ce00c8d4d87056f11d" => :mojave
    sha256 "cbb783a23e8ec9c898aefc90454c1692914a48d692ecb687376600c7b1ad3b17" => :high_sierra
    sha256 "20d7dc1932212e1878c9171dee04fe00a2ce98da09bd64601b07beca46a2bebd" => :sierra
    sha256 "eef44aeb48d7fdc99df24d96788780c6b3c8284e4716db002384aa305d701d89" => :el_capitan
  end

  depends_on "glide" => :build
  depends_on "go" => :build

  def install
    ENV["GLIDE_HOME"] = buildpath/"glide_home"
    ENV["GOPATH"] = buildpath
    (buildpath/"src/github.com/junegunn").mkpath
    ln_s buildpath, buildpath/"src/github.com/junegunn/fzf"
    system "glide", "install"
    system "go", "build", "-o", bin/"fzf", "-ldflags", "-X main.revision=brew"

    prefix.install "install", "uninstall"
    (prefix/"shell").install %w[bash zsh fish].map { |s| "shell/key-bindings.#{s}" }
    (prefix/"shell").install %w[bash zsh].map { |s| "shell/completion.#{s}" }
    (prefix/"plugin").install "plugin/fzf.vim"
    man1.install "man/man1/fzf.1", "man/man1/fzf-tmux.1"
    bin.install "bin/fzf-tmux"
  end

  def caveats; <<~EOS
    To install useful keybindings and fuzzy completion:
      #{opt_prefix}/install

    To use fzf in Vim, add the following line to your .vimrc:
      set rtp+=#{opt_prefix}
  EOS
  end

  test do
    (testpath/"list").write %w[hello world].join($INPUT_RECORD_SEPARATOR)
    assert_equal "world", shell_output("cat #{testpath}/list | #{bin}/fzf -f wld").chomp
  end
end