package main

import (
	"testing"

	"github.com/restic/restic/internal/restic"
	rtest "github.com/restic/restic/internal/test"
)

func TestForgetOptionValues(t *testing.T) {
	const negValErrorMsg = "Fatal: negative values other than -1 are not allowed for --keep-*"
	const negDurationValErrorMsg = "Fatal: durations containing negative values are not allowed for --keep-within*"
	testCases := []struct {
		input        ForgetOptions
		expectsError bool
		errorMsg     string
	}{
		{ForgetOptions{Last: 1}, false, ""},
		{ForgetOptions{Hourly: 1}, false, ""},
		{ForgetOptions{Daily: 1}, false, ""},
		{ForgetOptions{Weekly: 1}, false, ""},
		{ForgetOptions{Monthly: 1}, false, ""},
		{ForgetOptions{Yearly: 1}, false, ""},
		{ForgetOptions{Last: 0}, false, ""},
		{ForgetOptions{Hourly: 0}, false, ""},
		{ForgetOptions{Daily: 0}, false, ""},
		{ForgetOptions{Weekly: 0}, false, ""},
		{ForgetOptions{Monthly: 0}, false, ""},
		{ForgetOptions{Yearly: 0}, false, ""},
		{ForgetOptions{Last: -1}, false, ""},
		{ForgetOptions{Hourly: -1}, false, ""},
		{ForgetOptions{Daily: -1}, false, ""},
		{ForgetOptions{Weekly: -1}, false, ""},
		{ForgetOptions{Monthly: -1}, false, ""},
		{ForgetOptions{Yearly: -1}, false, ""},
		{ForgetOptions{Last: -2}, true, negValErrorMsg},
		{ForgetOptions{Hourly: -2}, true, negValErrorMsg},
		{ForgetOptions{Daily: -2}, true, negValErrorMsg},
		{ForgetOptions{Weekly: -2}, true, negValErrorMsg},
		{ForgetOptions{Monthly: -2}, true, negValErrorMsg},
		{ForgetOptions{Yearly: -2}, true, negValErrorMsg},
		{ForgetOptions{Within: restic.ParseDurationOrPanic("1y2m3d3h")}, false, ""},
		{ForgetOptions{WithinHourly: restic.ParseDurationOrPanic("1y2m3d3h")}, false, ""},
		{ForgetOptions{WithinDaily: restic.ParseDurationOrPanic("1y2m3d3h")}, false, ""},
		{ForgetOptions{WithinWeekly: restic.ParseDurationOrPanic("1y2m3d3h")}, false, ""},
		{ForgetOptions{WithinMonthly: restic.ParseDurationOrPanic("2y4m6d8h")}, false, ""},
		{ForgetOptions{WithinYearly: restic.ParseDurationOrPanic("2y4m6d8h")}, false, ""},
		{ForgetOptions{Within: restic.ParseDurationOrPanic("-1y2m3d3h")}, true, negDurationValErrorMsg},
		{ForgetOptions{WithinHourly: restic.ParseDurationOrPanic("1y-2m3d3h")}, true, negDurationValErrorMsg},
		{ForgetOptions{WithinDaily: restic.ParseDurationOrPanic("1y2m-3d3h")}, true, negDurationValErrorMsg},
		{ForgetOptions{WithinWeekly: restic.ParseDurationOrPanic("1y2m3d-3h")}, true, negDurationValErrorMsg},
		{ForgetOptions{WithinMonthly: restic.ParseDurationOrPanic("-2y4m6d8h")}, true, negDurationValErrorMsg},
		{ForgetOptions{WithinYearly: restic.ParseDurationOrPanic("2y-4m6d8h")}, true, negDurationValErrorMsg},
	}

	for _, testCase := range testCases {
		err := verifyForgetOptions(&testCase.input)
		if testCase.expectsError {
			rtest.Assert(t, err != nil, "should have returned error for input %+v", testCase.input)
			rtest.Equals(t, testCase.errorMsg, err.Error())
		} else {
			rtest.Assert(t, err == nil, "expected no error for input %+v", testCase.input)
		}
	}
}