package home

import (
	"net/netip"
	"testing"

	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
	"github.com/AdguardTeam/AdGuardHome/internal/schedule"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

var testIPv4 = netip.AddrFrom4([4]byte{1, 2, 3, 4})

func TestApplyAdditionalFiltering(t *testing.T) {
	var err error

	Context.filters, err = filtering.New(&filtering.Config{
		BlockedServices: &filtering.BlockedServices{
			Schedule: schedule.EmptyWeekly(),
		},
	}, nil)
	require.NoError(t, err)

	Context.clients.idIndex = map[string]*persistentClient{
		"default": {
			UseOwnSettings:      false,
			safeSearchConf:      filtering.SafeSearchConfig{Enabled: false},
			FilteringEnabled:    false,
			SafeBrowsingEnabled: false,
			ParentalEnabled:     false,
		},
		"custom_filtering": {
			UseOwnSettings:      true,
			safeSearchConf:      filtering.SafeSearchConfig{Enabled: true},
			FilteringEnabled:    true,
			SafeBrowsingEnabled: true,
			ParentalEnabled:     true,
		},
		"partial_custom_filtering": {
			UseOwnSettings:      true,
			safeSearchConf:      filtering.SafeSearchConfig{Enabled: true},
			FilteringEnabled:    true,
			SafeBrowsingEnabled: false,
			ParentalEnabled:     false,
		},
	}

	testCases := []struct {
		name                string
		id                  string
		FilteringEnabled    assert.BoolAssertionFunc
		SafeSearchEnabled   assert.BoolAssertionFunc
		SafeBrowsingEnabled assert.BoolAssertionFunc
		ParentalEnabled     assert.BoolAssertionFunc
	}{{
		name:                "global_settings",
		id:                  "default",
		FilteringEnabled:    assert.False,
		SafeSearchEnabled:   assert.False,
		SafeBrowsingEnabled: assert.False,
		ParentalEnabled:     assert.False,
	}, {
		name:                "custom_settings",
		id:                  "custom_filtering",
		FilteringEnabled:    assert.True,
		SafeSearchEnabled:   assert.True,
		SafeBrowsingEnabled: assert.True,
		ParentalEnabled:     assert.True,
	}, {
		name:                "partial",
		id:                  "partial_custom_filtering",
		FilteringEnabled:    assert.True,
		SafeSearchEnabled:   assert.True,
		SafeBrowsingEnabled: assert.False,
		ParentalEnabled:     assert.False,
	}}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			setts := &filtering.Settings{}

			applyAdditionalFiltering(testIPv4, tc.id, setts)
			tc.FilteringEnabled(t, setts.FilteringEnabled)
			tc.SafeSearchEnabled(t, setts.SafeSearchEnabled)
			tc.SafeBrowsingEnabled(t, setts.SafeBrowsingEnabled)
			tc.ParentalEnabled(t, setts.ParentalEnabled)
		})
	}
}

func TestApplyAdditionalFiltering_blockedServices(t *testing.T) {
	filtering.InitModule()

	var (
		globalBlockedServices  = []string{"ok"}
		clientBlockedServices  = []string{"ok", "mail_ru", "vk"}
		invalidBlockedServices = []string{"invalid"}

		err error
	)

	Context.filters, err = filtering.New(&filtering.Config{
		BlockedServices: &filtering.BlockedServices{
			Schedule: schedule.EmptyWeekly(),
			IDs:      globalBlockedServices,
		},
	}, nil)
	require.NoError(t, err)

	Context.clients.idIndex = map[string]*persistentClient{
		"default": {
			UseOwnBlockedServices: false,
		},
		"no_services": {
			BlockedServices: &filtering.BlockedServices{
				Schedule: schedule.EmptyWeekly(),
			},
			UseOwnBlockedServices: true,
		},
		"services": {
			BlockedServices: &filtering.BlockedServices{
				Schedule: schedule.EmptyWeekly(),
				IDs:      clientBlockedServices,
			},
			UseOwnBlockedServices: true,
		},
		"invalid_services": {
			BlockedServices: &filtering.BlockedServices{
				Schedule: schedule.EmptyWeekly(),
				IDs:      invalidBlockedServices,
			},
			UseOwnBlockedServices: true,
		},
		"allow_all": {
			BlockedServices: &filtering.BlockedServices{
				Schedule: schedule.FullWeekly(),
				IDs:      clientBlockedServices,
			},
			UseOwnBlockedServices: true,
		},
	}

	testCases := []struct {
		name    string
		id      string
		wantLen int
	}{{
		name:    "global_settings",
		id:      "default",
		wantLen: len(globalBlockedServices),
	}, {
		name:    "custom_settings",
		id:      "no_services",
		wantLen: 0,
	}, {
		name:    "custom_settings_block",
		id:      "services",
		wantLen: len(clientBlockedServices),
	}, {
		name:    "custom_settings_invalid",
		id:      "invalid_services",
		wantLen: 0,
	}, {
		name:    "custom_settings_inactive_schedule",
		id:      "allow_all",
		wantLen: 0,
	}}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			setts := &filtering.Settings{}

			applyAdditionalFiltering(testIPv4, tc.id, setts)
			require.Len(t, setts.ServicesRules, tc.wantLen)
		})
	}
}