require 'aruba/api'

module Autoproj
    # Minitest-usable Aruba wrapper
    #
    # Aruba 0.14 is incompatible with Minitest because of their definition
    # of the #run method This change hacks around the problem, by moving
    # the Aruba API to a side stub object.
    #
    # The run methods are renamed as they have been renamed in Aruba 1.0
    # alpha, run -> run_command and run_simple -> run_command_and_stop
    module ArubaMinitest
        class API
            include ::Aruba::Api
        end

        def setup
            super
            @aruba_api = API.new
            @aruba_api.setup_aruba
        end

        def teardown
            stop_all_commands
            super
        end

        def generate_local_gemfile
            path = expand_path("Gemfile.local")
            File.open(path, 'w') do |io|
                io.write <<~GEMFILE
                source "https://rubygems.org"
                gem "autoproj", path: "#{File.expand_path("../../", __dir__)}"
                GEMFILE
            end
            path
        end

        def run_command_and_stop(*args, fail_on_error: true, **kwargs)
            cmd = run_command(*args, **kwargs)
            cmd.stop
            if fail_on_error
                assert_command_finished_successfully(cmd)
            end
            cmd
        end

        def run_command(*args, **kwargs)
            @aruba_api.run_command(*args, **kwargs)
        end

        def cd(*args) # also defined by Rake
            @aruba_api.cd(*args)
        end

        def chmod(*args) # also defined by Rake
            @aruba_api.chmod(*args)
        end

        def method_missing(m, *args, &block)
            if @aruba_api.respond_to?(m)
                return @aruba_api.send(m, *args, &block)
            else
                super
            end
        end

        def assert_command_stops(cmd, fail_on_error: true)
            cmd.stop
            if fail_on_error
                assert_command_finished_successfully(cmd)
            end
        end

        def assert_command_finished_successfully(cmd)
            refute cmd.timed_out?, "#{cmd} timed out on stop"
            assert_equal 0, cmd.exit_status, "#{cmd} finished with a non-zero exit status (#{cmd.exit_status})\n-- STDOUT\n#{cmd.stdout}\n-- STDERR\n#{cmd.stderr}"
        end
    end
end