require "language/node"

class Chronograf < Formula
  desc "Open source monitoring and visualization UI for the TICK stack"
  homepage "https://docs.influxdata.com/chronograf/latest/"
  url "https://github.com/influxdata/chronograf/archive/1.7.14.tar.gz"
  sha256 "245479b691e2ad484717778562ce9e0c21b1d769e7d748335d1c5f41cd677d4c"
  head "https://github.com/influxdata/chronograf.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "f3115535c7d986495c81b71b9b0f0e718d9cc4319fb6ed6d3fe38f559f820768" => :mojave
    sha256 "a5c6e5b3dcfd0896e51b2c80606ea0127079cf0f1f42385d6bff4dcf5496019c" => :high_sierra
    sha256 "4e54046b3218fac9e81fa7b28b621e83ccec7e025e9a546f2686e62fc1c19478" => :sierra
  end

  depends_on "go" => :build
  depends_on "node" => :build
  depends_on "yarn" => :build
  depends_on "influxdb"
  depends_on "kapacitor"

  def install
    ENV["GOPATH"] = buildpath
    ENV.prepend_create_path "PATH", buildpath/"bin"
    Language::Node.setup_npm_environment
    chronograf_path = buildpath/"src/github.com/influxdata/chronograf"
    chronograf_path.install buildpath.children

    cd chronograf_path do
      cd "ui" do # fix node 12 compatibility
        system "yarn", "upgrade", "parcel@1.11.0", "node-sass@4.12.0"
      end
      system "make", "dep"
      system "make", ".jssrc"
      system "make", "chronograf"
      bin.install "chronograf"
      prefix.install_metafiles
    end
  end

  plist_options :manual => "chronograf"

  def plist; <<~EOS
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    <plist version="1.0">
      <dict>
        <key>KeepAlive</key>
        <dict>
          <key>SuccessfulExit</key>
          <false/>
        </dict>
        <key>Label</key>
        <string>#{plist_name}</string>
        <key>ProgramArguments</key>
        <array>
          <string>#{opt_bin}/chronograf</string>
        </array>
        <key>RunAtLoad</key>
        <true/>
        <key>WorkingDirectory</key>
        <string>#{var}</string>
        <key>StandardErrorPath</key>
        <string>#{var}/log/chronograf.log</string>
        <key>StandardOutPath</key>
        <string>#{var}/log/chronograf.log</string>
      </dict>
    </plist>
  EOS
  end

  test do
    pid = fork do
      exec "#{bin}/chronograf"
    end
    sleep 3
    output = shell_output("curl -s 0.0.0.0:8888/chronograf/v1/")
    sleep 1
    assert_match %r{/chronograf/v1/layouts}, output
  ensure
    Process.kill("SIGINT", pid)
    Process.wait(pid)
  end
end