package ipcauth

import (
	"testing"

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

func TestIdentitySameUser(t *testing.T) {
	tests := []struct {
		name string
		a    Identity
		b    Identity
		want bool
	}{
		{
			name: "same uid",
			a:    Identity{UID: 1000, GID: 1000},
			b:    Identity{UID: 1000, GID: 1000},
			want: true,
		},
		{
			name: "same uid, different gid and pid still the same user",
			a:    Identity{UID: 1000, GID: 1000, PID: 11},
			b:    Identity{UID: 1000, GID: 27, PID: 22},
			want: true,
		},
		{
			name: "different uid",
			a:    Identity{UID: 1000},
			b:    Identity{UID: 1001},
			want: false,
		},
		{
			name: "same sid",
			a:    Identity{SID: "S-1-5-21-1-2-3-1001"},
			b:    Identity{SID: "S-1-5-21-1-2-3-1001"},
			want: true,
		},
		{
			name: "same sid, elevation and groups differ",
			a:    Identity{SID: "S-1-5-21-1-2-3-1001", Elevated: true, Groups: []string{sidAdministrators}},
			b:    Identity{SID: "S-1-5-21-1-2-3-1001"},
			want: true,
		},
		{
			name: "different sid",
			a:    Identity{SID: "S-1-5-21-1-2-3-1001"},
			b:    Identity{SID: "S-1-5-21-1-2-3-1002"},
			want: false,
		},
		{
			name: "a windows principal is never a unix one",
			a:    Identity{SID: "S-1-5-18"},
			b:    Identity{UID: 0},
			want: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			assert.Equal(t, tt.want, tt.a.SameUser(tt.b))
			assert.Equal(t, tt.want, tt.b.SameUser(tt.a), "SameUser must be symmetric")
		})
	}
}

func TestIdentityIsPrivileged(t *testing.T) {
	tests := []struct {
		name string
		id   Identity
		want bool
	}{
		{
			name: "Root",
			id:   Identity{UID: 0, GID: 0},
			want: true,
		},
		{
			name: "Non-root",
			id:   Identity{UID: 1000, GID: 1000},
			want: false,
		},
		{
			name: "Local system windows",
			id:   Identity{SID: sidLocalSystem},
			want: true,
		},
		{
			name: "Windows elevated",
			id:   Identity{SID: "S-1-5-21-1927267129-3959769253-3036563910-1001", Elevated: true},
			want: true,
		},
		{
			name: "Admin group windows",
			id:   Identity{SID: "S-1-5-21-1927267129-3959769253-3036563910-1001", Groups: []string{sidAdministrators}},
			want: true,
		},
		{
			name: "Regular user windows",
			id:   Identity{SID: "S-1-5-21-1927267129-3959769253-3036563910-1001"},
			want: false,
		},
		{
			name: "Network service windows",
			id:   Identity{SID: sidNetworkService},
			want: false,
		},
		{
			name: "Local service windows",
			id:   Identity{SID: sidLocalService},
			want: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			assert.Equal(t, tt.want, tt.id.IsPrivileged())
		})
	}
}