// apparmor.d - Full set of apparmor profiles
// Copyright (C) 2023-2024 Alexandre Pujol <alexandre@pujol.io>
// SPDX-License-Identifier: GPL-2.0-only

package util

import (
	"reflect"
	"regexp"
	"testing"

	"github.com/roddhjav/apparmor.d/pkg/paths"
)

func TestDecodeHexInString(t *testing.T) {
	tests := []struct {
		name string
		str  string
		want string
	}{
		{
			name: "Hexa",
			str:  `apparmor="ALLOWED" operation="rename_dest" parent=6974 profile="/usr/sbin/httpd2-prefork//vhost_foo" name=2F686F6D652F7777772F666F6F2E6261722E696E2F68747470646F63732F61707061726D6F722F696D616765732F746573742F696D61676520312E6A7067 pid=20143 comm="httpd2-prefork" requested_mask="wc"`,
			want: `apparmor="ALLOWED" operation="rename_dest" parent=6974 profile="/usr/sbin/httpd2-prefork//vhost_foo" name="/home/www/foo.bar.in/httpdocs/apparmor/images/test/image 1.jpg" pid=20143 comm="httpd2-prefork" requested_mask="wc"`,
		},
		{
			name: "Not Hexa",
			str:  `type=AVC msg=audit(1424425690.883:716630): apparmor="ALLOWED" operation="file_mmap" info="Failed name lookup - disconnected path" error=-13 profile="/sbin/klogd" name="var/run/nscd/passwd" pid=25333 comm="id" requested_mask="r" denied_mask="r" fsuid=1002 ouid=0`,
			want: `type=AVC msg=audit(1424425690.883:716630): apparmor="ALLOWED" operation="file_mmap" info="Failed name lookup - disconnected path" error=-13 profile="/sbin/klogd" name="var/run/nscd/passwd" pid=25333 comm="id" requested_mask="r" denied_mask="r" fsuid=1002 ouid=0`,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := DecodeHexInString(tt.str); got != tt.want {
				t.Errorf("DecodeHexInString() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestRemoveDuplicate(t *testing.T) {
	tests := []struct {
		name   string
		inlist []string
		want   []string
	}{
		{
			name:   "Duplicate",
			inlist: []string{"foo", "bar", "foo", "bar", ""},
			want:   []string{"foo", "bar"},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := RemoveDuplicate(tt.inlist); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("RemoveDuplicate() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestIntersect(t *testing.T) {
	tests := []struct {
		name  string
		list1 []int
		list2 []int
		want  []int
	}{
		{
			name:  "1",
			list1: []int{0, 1, 2, 3, 4, 5},
			list2: []int{0, 2},
			want:  []int{0, 2},
		},
		{
			name:  "2",
			list1: []int{0, 1, 2, 3, 4, 5},
			list2: []int{0, 6},
			want:  []int{0},
		},
		{
			name:  "3",
			list1: []int{0, 1, 2, 3, 4, 5},
			list2: []int{-1, 6},
			want:  []int{},
		},
		{
			name:  "4",
			list1: []int{0, 6},
			list2: []int{0, 1, 2, 3, 4, 5},
			want:  []int{0},
		},
		{
			name:  "5",
			list1: []int{0, 6, 0},
			list2: []int{0, 1, 2, 3, 4, 5},
			want:  []int{0},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := Intersect(tt.list1, tt.list2); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("Intersect() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestToRegexRepl(t *testing.T) {
	tests := []struct {
		name string
		in   []string
		want RegexReplList
	}{
		{
			name: "",
			in: []string{
				"^/foo/bar", "/foo/bar",
				"^/foo/bar", "/foo/bar",
			},
			want: []RegexRepl{
				{Regex: regexp.MustCompile("^/foo/bar"), Repl: "/foo/bar"},
				{Regex: regexp.MustCompile("^/foo/bar"), Repl: "/foo/bar"},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := ToRegexRepl(tt.in); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("ToRegexRepl() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestRegexReplList_Replace(t *testing.T) {
	tests := []struct {
		name string
		rr   RegexReplList
		str  string
		want string
	}{
		{
			name: "default",
			rr: []RegexRepl{
				{Regex: regexp.MustCompile(`^/foo`), Repl: "/bar"},
			},
			str:  "/foo",
			want: "/bar",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := tt.rr.Replace(tt.str); got != tt.want {
				t.Errorf("RegexReplList.Replace() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestCopyTo(t *testing.T) {
	tests := []struct {
		name    string
		src     *paths.Path
		dst     *paths.Path
		wantErr bool
	}{
		{
			name:    "default",
			src:     paths.New("../../apparmor.d/groups/_full/"),
			dst:     paths.New("/tmp/test/apparmor.d/groups/_full/"),
			wantErr: false,
		},
		{
			name:    "issue-source",
			src:     paths.New("../../apparmor.d/groups/nope/"),
			dst:     paths.New("/tmp/test/apparmor.d/groups/_full/"),
			wantErr: true,
		},
		// {
		// 	name:    "issue-dest-1",
		// 	src:     paths.New("../../apparmor.d/groups/_full/"),
		// 	dst:     paths.New("/"),
		// 	wantErr: true,
		// },
		// {
		// 	name:    "issue-dest-2",
		// 	src:     paths.New("../../apparmor.d/groups/_full/"),
		// 	dst:     paths.New("/_full/"),
		// 	wantErr: true,
		// },
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := CopyTo(tt.src, tt.dst); (err != nil) != tt.wantErr {
				t.Errorf("CopyTo() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func Test_Filter(t *testing.T) {
	tests := []struct {
		name string
		src  string
		want string
	}{
		{
			name: "comment",
			src:  "# comment",
			want: "",
		},
		{
			name: "comment with space",
			src:  " # comment",
			want: "",
		},
		{
			name: "no comment",
			src:  "no comment",
			want: "no comment",
		},
		{
			name: "no comment # comment",
			src:  "no comment # comment",
			want: "no comment",
		},
		{
			name: "empty",
			src: `

`,
			want: ``,
		},
		{
			name: "main",
			src: `
# Common profile flags definition for all distributions
# File format: one profile by line using the format: '<profile> <flags>'

bwrap attach_disconnected,mediate_deleted,complain
bwrap-app attach_disconnected,complain

akonadi_akonotes_resource complain # Dev
gnome-disks complain

`,
			want: `bwrap attach_disconnected,mediate_deleted,complain
bwrap-app attach_disconnected,complain
akonadi_akonotes_resource complain
gnome-disks complain
`,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			gotLine := Filter(tt.src)
			if gotLine != tt.want {
				t.Errorf("FilterComment() got = |%v|, want |%v|", gotLine, tt.want)
			}
		})
	}
}