class Aruba::ScriptFile

def call
  Aruba.platform.write_file(path, "#{header}#{content}")
  Aruba.platform.chmod(0o755, path, {})
end

def header
  if script_starts_with_shebang?
    ""
  elsif interpreter_is_absolute_path?
    format("#!%s\n", interpreter)
  elsif interpreter_is_just_the_name_of_shell?
    format("#!/usr/bin/env %s\n", interpreter)
  end
end

def initialize(opts = {})
  @path        = opts[:path]
  @content     = opts[:content]
  @interpreter = opts[:interpreter]
end

def interpreter_is_absolute_path?
  Aruba.platform.absolute_path? interpreter
end

def interpreter_is_just_the_name_of_shell?
  interpreter =~ /^[-_a-zA-Z.]+$/
end

def script_starts_with_shebang?
  content.start_with? "#!"
end