class Opensearch < Formula
  desc "Open source distributed and RESTful search engine"
  homepage "https://github.com/opensearch-project/OpenSearch"
  url "https://github.com/opensearch-project/OpenSearch/archive/1.1.0.tar.gz"
  sha256 "6e664cb5d14f73f5678b218f1f4e9dd393f760789b9d11f4b97c5683e156cf39"
  license "Apache-2.0"

  bottle do
    sha256 cellar: :any_skip_relocation, big_sur:  "83484e775335c5c8a2a4c3d791dfd609dbc6e832bf2ae74a0efee22828745fe5"
    sha256 cellar: :any_skip_relocation, catalina: "7f01418a6721f2b542e3bde40447c1f6b41ba51f370930f2c51544abcd859c8c"
    sha256 cellar: :any_skip_relocation, mojave:   "6add29af38af0405cdff40dd7fd6fbf656f6d45f502bc32d39f5d538b4d23040"
  end

  depends_on "gradle@6" => :build
  depends_on "openjdk"

  def install
    system "gradle", ":distribution:archives:no-jdk-darwin-tar:assemble"

    mkdir "tar" do
      # Extract the package to the tar directory
      system "tar", "--strip-components=1", "-xf",
        Dir["../distribution/archives/no-jdk-darwin-tar/build/distributions/opensearch-*.tar.gz"].first

      # Install into package directory
      libexec.install "bin", "lib", "modules"

      # Set up Opensearch for local development:
      inreplace "config/opensearch.yml" do |s|
        # 1. Give the cluster a unique name
        s.gsub!(/#\s*cluster\.name: .*/, "cluster.name: opensearch_homebrew")

        # 2. Configure paths
        s.sub!(%r{#\s*path\.data: /path/to.+$}, "path.data: #{var}/lib/opensearch/")
        s.sub!(%r{#\s*path\.logs: /path/to.+$}, "path.logs: #{var}/log/opensearch/")
      end

      inreplace "config/jvm.options", %r{logs/gc.log}, "#{var}/log/opensearch/gc.log"

      # add placeholder to avoid removal of empty directory
      touch "config/jvm.options.d/.keepme"

      # Move config files into etc
      (etc/"opensearch").install Dir["config/*"]
    end

    inreplace libexec/"bin/opensearch-env",
              "if [ -z \"$OPENSEARCH_PATH_CONF\" ]; then OPENSEARCH_PATH_CONF=\"$OPENSEARCH_HOME\"/config; fi",
              "if [ -z \"$OPENSEARCH_PATH_CONF\" ]; then OPENSEARCH_PATH_CONF=\"#{etc}/opensearch\"; fi"

    bin.install libexec/"bin/opensearch",
                libexec/"bin/opensearch-keystore",
                libexec/"bin/opensearch-plugin",
                libexec/"bin/opensearch-shard"
    bin.env_script_all_files(libexec/"bin", JAVA_HOME: Formula["openjdk"].opt_prefix)
  end

  def post_install
    # Make sure runtime directories exist
    (var/"lib/opensearch").mkpath
    (var/"log/opensearch").mkpath
    ln_s etc/"opensearch", libexec/"config" unless (libexec/"config").exist?
    (var/"opensearch/plugins").mkpath
    ln_s var/"opensearch/plugins", libexec/"plugins" unless (libexec/"plugins").exist?
    # fix test not being able to create keystore because of sandbox permissions
    system bin/"opensearch-keystore", "create" unless (etc/"opensearch/opensearch.keystore").exist?
  end

  def caveats
    <<~EOS
      Data:    #{var}/lib/opensearch/
      Logs:    #{var}/log/opensearch/opensearch_homebrew.log
      Plugins: #{var}/opensearch/plugins/
      Config:  #{etc}/opensearch/
    EOS
  end

  plist_options manual: "opensearch"
  service do
    run opt_bin/"opensearch"
    working_dir var
    log_path var/"log/opensearch.log"
    error_log_path var/"log/opensearch.log"
  end

  test do
    port = free_port
    (testpath/"data").mkdir
    (testpath/"logs").mkdir
    fork do
      exec bin/"opensearch", "-Ehttp.port=#{port}",
                                "-Epath.data=#{testpath}/data",
                                "-Epath.logs=#{testpath}/logs"
    end
    sleep 20
    output = shell_output("curl -s -XGET localhost:#{port}/")
    assert_equal "opensearch", JSON.parse(output)["version"]["distribution"]

    system "#{bin}/opensearch-plugin", "list"
  end
end