class Fn < Formula
  desc "Command-line tool for the fn project"
  homepage "https://fnproject.io"
  url "https://github.com/fnproject/cli/archive/0.5.91.tar.gz"
  sha256 "66f470d50fdb43b33bba1ec2c82d773adc109baadf417e7673bb4098f975fbd8"

  bottle do
    cellar :any_skip_relocation
    rebuild 1
    sha256 "a1b85cd457cdd8313464d2fe0c1de2958eb395f8002caf4eae1a2ba7fb2a1074" => :catalina
    sha256 "9ac868d2ad2671618f32077b6390e6f4d90c05af74d1b52ba9f683d968235d1f" => :mojave
    sha256 "7bcd165245b02a75a00645661996f75622d445bbff5ffe257bfd66686d85a9b8" => :high_sierra
  end

  depends_on "go" => :build

  def install
    system "go", "build", "-ldflags", "-s -w", "-trimpath", "-o", "#{bin}/fn"
    prefix.install_metafiles
  end

  test do
    require "socket"
    assert_match version.to_s, shell_output("#{bin}/fn --version")
    system "#{bin}/fn", "init", "--runtime", "go", "--name", "myfunc"
    assert_predicate testpath/"func.go", :exist?, "expected file func.go doesn't exist"
    assert_predicate testpath/"func.yaml", :exist?, "expected file func.yaml doesn't exist"
    server = TCPServer.new("localhost", 0)
    port = server.addr[1]
    pid = fork do
      loop do
        socket = server.accept
        response = '{"id":"01CQNY9PADNG8G00GZJ000000A","name":"myapp","created_at":"2018-09-18T08:56:08.269Z","updated_at":"2018-09-18T08:56:08.269Z"}'
        socket.print "HTTP/1.1 200 OK\r\n" \
                    "Content-Length: #{response.bytesize}\r\n" \
                    "Connection: close\r\n"
        socket.print "\r\n"
        socket.print response
        socket.close
      end
    end
    begin
      ENV["FN_API_URL"] = "http://localhost:#{port}"
      ENV["FN_REGISTRY"] = "fnproject"
      expected = "Successfully created app:  myapp"
      output = shell_output("#{bin}/fn create app myapp")
      assert_match expected, output.chomp
    ensure
      Process.kill("TERM", pid)
      Process.wait(pid)
    end
  end
end