package flags

import (
	"flag"
	"testing"
	"time"

	"github.com/stretchr/testify/require"
)

func TestFlagHelper_Pointers_Set(t *testing.T) {
	t.Parallel()

	var (
		B BoolValue
		b bool = true

		D DurationValue
		d time.Duration = 2 * time.Minute

		U UintValue
		u uint = 99
	)
	flagSet := flag.NewFlagSet("test", flag.PanicOnError)
	flagSet.Var(&B, "b", "bool")
	flagSet.Var(&D, "d", "duration")
	flagSet.Var(&U, "u", "uint")

	args := []string{"-b", "false", "-d", "1m", "-u", "42"}
	err := flagSet.Parse(args)
	require.NoError(t, err)

	require.Equal(t, "false", B.String())
	B.Merge(&b)
	require.Equal(t, false, b)

	require.Equal(t, "1m0s", D.String())
	D.Merge(&d)
	require.Equal(t, 1*time.Minute, d)

	require.Equal(t, "42", U.String())
	U.Merge(&u)
	require.Equal(t, uint(42), u)
}

func TestFlagHelper_Pointers_Ignored(t *testing.T) {
	t.Parallel()

	var (
		B BoolValue
		b bool = true

		D DurationValue
		d time.Duration = 2 * time.Minute

		U UintValue
		u uint = 99
	)
	flagSet := flag.NewFlagSet("test", flag.PanicOnError)
	flagSet.Var(&B, "b", "bool")
	flagSet.Var(&D, "d", "duration")
	flagSet.Var(&U, "u", "uint")

	var args []string
	err := flagSet.Parse(args)
	require.NoError(t, err)

	require.Equal(t, "false", B.String())
	B.Merge(&b)
	require.Equal(t, true, b)

	require.Equal(t, "0s", D.String())
	D.Merge(&d)
	require.Equal(t, 2*time.Minute, d)

	require.Equal(t, "0", U.String())
	U.Merge(&u)
	require.Equal(t, uint(99), u)
}