package main

import (
	"flag"
	"fmt"
	"os"
	"testing"

	"github.com/cucumber/godog"
	"github.com/cucumber/godog/colors"
)

var opts = godog.Options{Output: colors.Colored(os.Stdout)}

func init() {
	godog.BindCommandLineFlags("godog.", &opts)
}

func TestMain(m *testing.M) {
	flag.Parse()
	opts.Paths = flag.Args()

	status := godog.TestSuite{
		Name:                 "godogs",
		TestSuiteInitializer: InitializeTestSuite,
		ScenarioInitializer:  InitializeScenario,
		Options:              &opts,
	}.Run()

	if st := m.Run(); st > status {
		status = st
	}
	os.Exit(status)
}

func thereAreGodogs(available int) error {
	Godogs = available
	return nil
}

func iEat(num int) error {
	if Godogs < num {
		return fmt.Errorf("you cannot eat %d godogs, there are %d available", num, Godogs)
	}
	Godogs -= num
	return nil
}

func thereShouldBeRemaining(remaining int) error {
	if Godogs != remaining {
		return fmt.Errorf("expected %d godogs to be remaining, but there is %d", remaining, Godogs)
	}
	return nil
}

func InitializeTestSuite(ctx *godog.TestSuiteContext) {
	ctx.BeforeSuite(func() { Godogs = 0 })
}

func InitializeScenario(ctx *godog.ScenarioContext) {
	ctx.BeforeScenario(func(*godog.Scenario) {
		Godogs = 0 // clean the state before every scenario
	})

	ctx.Step(`^there are (\d+) godogs$`, thereAreGodogs)
	ctx.Step(`^I eat (\d+)$`, iEat)
	ctx.Step(`^there should be (\d+) remaining$`, thereShouldBeRemaining)
}