// Copyright 2019 the Kilo authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package wireguard

import (
	"testing"
)

func TestCompareConf(t *testing.T) {
	for _, tc := range []struct {
		name string
		a    []byte
		b    []byte
		out  bool
	}{
		{
			name: "empty",
			a:    []byte{},
			b:    []byte{},
			out:  true,
		},
		{
			name: "key and value order",
			a: []byte(`[Interface]
PrivateKey = private
ListenPort = 51820

[Peer]
Endpoint = 10.1.0.2:51820
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
`),
			b: []byte(`[Interface]
ListenPort = 51820
PrivateKey = private

[Peer]
PublicKey = key
AllowedIPs = 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32, 10.2.2.0/24
Endpoint = 10.1.0.2:51820
`),
			out: true,
		},
		{
			name: "whitespace",
			a: []byte(`[Interface]
PrivateKey = private
ListenPort = 51820

[Peer]
Endpoint = 10.1.0.2:51820
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
`),
			b: []byte(`[Interface]
PrivateKey=private
ListenPort=51820
[Peer]
Endpoint=10.1.0.2:51820
PublicKey=key
AllowedIPs=10.2.2.0/24,192.168.0.1/32,10.2.3.0/24,192.168.0.2/32,10.4.0.2/32
`),
			out: true,
		},
		{
			name: "missing key",
			a: []byte(`[Interface]
PrivateKey = private
ListenPort = 51820

[Peer]
Endpoint = 10.1.0.2:51820
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
`),
			b: []byte(`[Interface]
PrivateKey = private
ListenPort = 51820

[Peer]
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
`),
			out: false,
		},
		{
			name: "section order",
			a: []byte(`[Interface]
PrivateKey = private
ListenPort = 51820

[Peer]
Endpoint = 10.1.0.2:51820
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
`),
			b: []byte(`[Peer]
Endpoint = 10.1.0.2:51820
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32

[Interface]
PrivateKey = private
ListenPort = 51820
`),
			out: true,
		},
		{
			name: "one empty",
			a: []byte(`[Interface]
PrivateKey = private
ListenPort = 51820

[Peer]
Endpoint = 10.1.0.2:51820
PublicKey = key
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
`),
			b:   []byte(``),
			out: false,
		},
	} {
		equal, err := CompareConf(tc.a, tc.b)
		if err != nil {
			t.Errorf("test case %q: got unexpected error: %v", tc.name, err)
		}
		if equal != tc.out {
			t.Errorf("test case %q: expected %t, got %t", tc.name, tc.out, equal)
		}
	}
}