require "formula"

class GoInstalled < Requirement
  fatal true
  default_formula "go"
  satisfy { which "go" }

  def message
    "Go is required to use gpm."
  end
end

class Gpm < Formula
  homepage "https://github.com/pote/gpm"
  url "https://github.com/pote/gpm/archive/v1.2.1.tar.gz"
  sha1 "225eabbf7f2ec01e4c6e2cce57950ad3a1034c39"

  bottle do
    cellar :any
    sha1 "623057df59619c9fb9fda82d85a5aed696c49bb2" => :mavericks
    sha1 "ebbfe75b3aae977a55ba3de9df09bb8fa3b161b6" => :mountain_lion
    sha1 "dc68290e961ccfb91cb688262be917dc55f728bc" => :lion
  end

  depends_on GoInstalled

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

  test do
    Pathname("Godeps").write "github.com/pote/gpm-testing-package v6.1"

    ENV["GOPATH"] = testpath
    system bin/"gpm", "install"

    Pathname("go_code.go").write <<-EOS.undent
      package main

      import (
              "fmt"
              "github.com/pote/gpm-testing-package"
      )

      func main() {
              fmt.Print(gpm_testing_package.Version())
      }
    EOS

    out = `go run go_code.go`
    assert_equal "v6.1", out
    assert_equal 0, $?.exitstatus
  end
end