<?php

declare(strict_types=1);

namespace App\Filament\Pages\VPN;

use App\Models\Miscellaneous\WebsiteBlockedCountry;
use App\Models\Miscellaneous\WebsiteIpBlacklist;
use App\Models\Miscellaneous\WebsiteIpWhitelist;
use App\Models\Miscellaneous\WebsiteSetting;
use App\Services\IpLookupService;
use Filament\Actions\Action;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Filament\Schemas\Components\Section;
use Filament\Schemas\Components\Tabs;
use Filament\Schemas\Components\Tabs\Tab;
use Filament\Schemas\Schema;
use Filament\Tables\Columns\TextColumn;

final class VPNManagement extends Page implements HasForms
{
    use InteractsWithForms;

    #[\Override]
    protected static string|\BackedEnum|null $navigationIcon = 'heroicon-o-shield-exclamation';

    #[\Override]
    protected static string|\UnitEnum|null $navigationGroup = 'Website';

    #[\Override]
    protected static ?string $navigationLabel = 'VPN Beheer';

    #[\Override]
    protected static ?string $title = 'VPN & IP Beheer';

    #[\Override]
    protected string $view = 'filament.pages.vpn.vpn-management';

    /** @var array<string, mixed> */
    public array $data = [];

    public $blockedCountries;

    public $whitelistedIps;

    public $blacklistedIps;

    public $blocklistStats;

    public function mount(): void
    {
        $this->fillForm();
        $this->loadData();
    }

    protected function loadData(): void
    {
        $this->blockedCountries = WebsiteBlockedCountry::orderBy('country_name')->get();
        $this->whitelistedIps = WebsiteIpWhitelist::orderBy('created_at', 'desc')->get();
        $this->blacklistedIps = WebsiteIpBlacklist::orderBy('created_at', 'desc')->get();

        $ipService = new IpLookupService('');
        $this->blocklistStats = $ipService->getBlocklistStats();
    }

    protected function fillForm(): void
    {
        $this->data = [
            'vpn_block_enabled' => $this->getSettingBool('vpn_block_enabled'),
            'country_block_enabled' => $this->getSettingBool('country_block_enabled'),
            'block_vpn' => $this->getSettingBool('block_vpn'),
            'block_tor' => $this->getSettingBool('block_tor'),
            'block_malicious' => $this->getSettingBool('block_malicious'),
        ];
    }

    protected function getSetting(string $key, string $default = ''): string
    {
        return WebsiteSetting::where('key', $key)->first()?->value ?? $default;
    }

    protected function getSettingBool(string $key): bool
    {
        return WebsiteSetting::where('key', $key)->first()?->value === '1';
    }

    public function form(Schema $schema): Schema
    {
        return $schema
            ->components([
                Tabs::make('VPN Beheer')
                    ->tabs([
                        Tab::make('Instellingen')
                            ->icon('heroicon-o-cog-6-tooth')
                            ->schema([
                                Section::make('Gratis Blokkering (Onbeperkt)')
                                    ->description('Gebruikt gratis community blocklists - geen API keys nodig')
                                    ->schema([
                                        Toggle::make('data.vpn_block_enabled')
                                            ->label('VPN/TOR/Proxy Blokker Actief')
                                            ->helperText('Blokkeer VPN, TOR exit nodes, proxies en bekende malicious IPs'),
                                    ]),
                                Section::make('Wat blokkeren?')
                                    ->schema([
                                        Toggle::make('data.block_vpn')
                                            ->label('VPN & Proxies')
                                            ->helperText('FireHol blocklist'),
                                        Toggle::make('data.block_tor')
                                            ->label('TOR Exit Nodes')
                                            ->helperText('Alle bekende TOR exit nodes'),
                                        Toggle::make('data.block_malicious')
                                            ->label('Malicious IPs')
                                            ->helperText('Bekende kwaadwillende IPs uit community databases'),
                                    ]),
                                Section::make('Land Blokkering')
                                    ->schema([
                                        Toggle::make('data.country_block_enabled')
                                            ->label('Land Blokkering Actief')
                                            ->helperText('Sta alleen bezoekers uit toegestane landen toe'),
                                    ]),
                            ]),
                        Tab::make('Geblokkeerde Landen')
                            ->icon('heroicon-o-globe-alt')
                            ->schema([
                                Section::make('Land toevoegen')
                                    ->schema([
                                        Select::make('country_to_block')
                                            ->label('Selecteer Land')
                                            ->options($this->getCountryOptions())
                                            ->searchable()
                                            ->placeholder('Kies een land'),
                                        Action::make('addCountry')
                                            ->label('Blokkeer Land')
                                            ->action('addBlockedCountry')
                                            ->color('danger'),
                                    ]),
                            ]),
                        Tab::make('Whitelist')
                            ->icon('heroicon-o-check-circle')
                            ->schema([
                                Section::make('Whitelist toevoegen')
                                    ->schema([
                                        TextInput::make('whitelist_ip')
                                            ->label('IP Adres')
                                            ->placeholder('192.168.1.1'),
                                        TextInput::make('whitelist_asn')
                                            ->label('ASN')
                                            ->placeholder('AS15169'),
                                        Select::make('whitelist_country')
                                            ->label('Land')
                                            ->options($this->getCountryOptions())
                                            ->searchable(),
                                        Action::make('addToWhitelist')
                                            ->label('Toevoegen')
                                            ->action('addToWhitelist')
                                            ->color('success'),
                                    ]),
                            ]),
                        Tab::make('Blacklist')
                            ->icon('heroicon-o-x-circle')
                            ->schema([
                                Section::make('Blacklist toevoegen')
                                    ->schema([
                                        TextInput::make('blacklist_ip')
                                            ->label('IP Adres')
                                            ->placeholder('192.168.1.1'),
                                        TextInput::make('blacklist_asn')
                                            ->label('ASN')
                                            ->placeholder('AS15169'),
                                        Select::make('blacklist_country')
                                            ->label('Land')
                                            ->options($this->getCountryOptions())
                                            ->searchable(),
                                        Action::make('addToBlacklist')
                                            ->label('Toevoegen')
                                            ->action('addToBlacklist')
                                            ->color('danger'),
                                    ]),
                            ]),
                        Tab::make('IP Lookup')
                            ->icon('heroicon-o-magnifying-glass')
                            ->schema([
                                Section::make('IP Opzoeken')
                                    ->schema([
                                        TextInput::make('lookup_ip')
                                            ->label('IP Adres')
                                            ->placeholder('Voer IP in om te controleren'),
                                        Action::make('lookupIp')
                                            ->label('Controleer')
                                            ->action('lookupIp')
                                            ->color('info'),
                                    ]),
                            ]),
                        Tab::make('Blocklist Stats')
                            ->icon('heroicon-o-chart-bar')
                            ->schema([
                                Section::make('Huidige Blocklists')
                                    ->description('Deze lijsten worden automatisch gedownload en dagelijks ververst')
                                    ->schema([
                                        TextColumn::make('type')->label('Type'),
                                        TextColumn::make('count')->label('Aantal IPs'),
                                    ]),
                            ]),
                    ]),
            ])
            ->statePath('data');
    }

    protected function getCountryOptions(): array
    {
        return [
            'AD' => 'Andorra', 'AE' => 'United Arab Emirates', 'AF' => 'Afghanistan',
            'AG' => 'Antigua and Barbuda', 'AI' => 'Anguilla', 'AL' => 'Albania',
            'AM' => 'Armenia', 'AO' => 'Angola', 'AR' => 'Argentina',
            'AT' => 'Austria', 'AU' => 'Australia', 'AW' => 'Aruba',
            'AZ' => 'Azerbaijan', 'BA' => 'Bosnia and Herzegovina', 'BB' => 'Barbados',
            'BD' => 'Bangladesh', 'BE' => 'Belgium', 'BG' => 'Bulgaria',
            'BH' => 'Bahrain', 'BI' => 'Burundi', 'BJ' => 'Benin',
            'BM' => 'Bermuda', 'BN' => 'Brunei', 'BO' => 'Bolivia',
            'BR' => 'Brazil', 'BS' => 'Bahamas', 'BT' => 'Bhutan',
            'BW' => 'Botswana', 'BY' => 'Belarus', 'BZ' => 'Belize',
            'CA' => 'Canada', 'CH' => 'Switzerland', 'CL' => 'Chile',
            'CN' => 'China', 'CO' => 'Colombia', 'CR' => 'Costa Rica',
            'CU' => 'Cuba', 'CY' => 'Cyprus', 'CZ' => 'Czechia',
            'DE' => 'Germany', 'DK' => 'Denmark', 'DO' => 'Dominican Republic',
            'DZ' => 'Algeria', 'EC' => 'Ecuador', 'EE' => 'Estonia',
            'EG' => 'Egypt', 'ES' => 'Spain', 'ET' => 'Ethiopia',
            'FI' => 'Finland', 'FJ' => 'Fiji', 'FR' => 'France',
            'GB' => 'United Kingdom', 'GD' => 'Grenada', 'GE' => 'Georgia',
            'GH' => 'Ghana', 'GI' => 'Gibraltar', 'GL' => 'Greenland',
            'GM' => 'Gambia', 'GN' => 'Guinea', 'GR' => 'Greece',
            'GT' => 'Guatemala', 'HK' => 'Hong Kong', 'HN' => 'Honduras',
            'HR' => 'Croatia', 'HU' => 'Hungary', 'ID' => 'Indonesia',
            'IE' => 'Ireland', 'IL' => 'Israel', 'IN' => 'India',
            'IQ' => 'Iraq', 'IR' => 'Iran', 'IS' => 'Iceland',
            'IT' => 'Italy', 'JM' => 'Jamaica', 'JO' => 'Jordan',
            'JP' => 'Japan', 'KE' => 'Kenya', 'KH' => 'Cambodia',
            'KR' => 'South Korea', 'KW' => 'Kuwait', 'KZ' => 'Kazakhstan',
            'LA' => 'Laos', 'LB' => 'Lebanon', 'LK' => 'Sri Lanka',
            'LT' => 'Lithuania', 'LU' => 'Luxembourg', 'LV' => 'Latvia',
            'MA' => 'Morocco', 'MC' => 'Monaco', 'MD' => 'Moldova',
            'ME' => 'Montenegro', 'MG' => 'Madagascar', 'MK' => 'North Macedonia',
            'MM' => 'Myanmar', 'MN' => 'Mongolia', 'MO' => 'Macao',
            'MT' => 'Malta', 'MU' => 'Mauritius', 'MV' => 'Maldives',
            'MX' => 'Mexico', 'MY' => 'Malaysia', 'MZ' => 'Mozambique',
            'NA' => 'Namibia', 'NG' => 'Nigeria', 'NI' => 'Nicaragua',
            'NL' => 'Netherlands', 'NO' => 'Norway', 'NP' => 'Nepal',
            'NZ' => 'New Zealand', 'OM' => 'Oman', 'PA' => 'Panama',
            'PE' => 'Peru', 'PH' => 'Philippines', 'PK' => 'Pakistan',
            'PL' => 'Poland', 'PR' => 'Puerto Rico', 'PT' => 'Portugal',
            'PY' => 'Paraguay', 'QA' => 'Qatar', 'RO' => 'Romania',
            'RS' => 'Serbia', 'RU' => 'Russia', 'RW' => 'Rwanda',
            'SA' => 'Saudi Arabia', 'SC' => 'Seychelles', 'SD' => 'Sudan',
            'SE' => 'Sweden', 'SG' => 'Singapore', 'SI' => 'Slovenia',
            'SK' => 'Slovakia', 'SN' => 'Senegal', 'SO' => 'Somalia',
            'SR' => 'Suriname', 'SV' => 'El Salvador', 'SY' => 'Syria',
            'TH' => 'Thailand', 'TJ' => 'Tajikistan', 'TN' => 'Tunisia',
            'TR' => 'Turkey', 'TT' => 'Trinidad and Tobago', 'TW' => 'Taiwan',
            'TZ' => 'Tanzania', 'UA' => 'Ukraine', 'UG' => 'Uganda',
            'US' => 'United States', 'UY' => 'Uruguay', 'UZ' => 'Uzbekistan',
            'VE' => 'Venezuela', 'VN' => 'Vietnam', 'ZA' => 'South Africa',
            'ZM' => 'Zambia', 'ZW' => 'Zimbabwe',
        ];
    }

    public function save(): void
    {
        $settings = [
            'vpn_block_enabled' => $this->data['vpn_block_enabled'] ? '1' : '0',
            'country_block_enabled' => $this->data['country_block_enabled'] ? '1' : '0',
            'block_vpn' => $this->data['block_vpn'] ?? true ? '1' : '0',
            'block_tor' => $this->data['block_tor'] ?? true ? '1' : '0',
            'block_malicious' => $this->data['block_malicious'] ?? true ? '1' : '0',
        ];

        foreach ($settings as $key => $value) {
            WebsiteSetting::updateOrCreate(['key' => $key], ['value' => $value]);
        }

        Notification::make()->title(__('Saved'))->success()->send();
    }

    public function refreshBlocklists(): void
    {
        $ipService = new IpLookupService('');
        $ipService->refreshBlocklists();
        $this->loadData();

        Notification::make()->title('Blocklists vernieuwd')->success()->send();
    }

    public function addBlockedCountry(): void
    {
        $countryCode = $this->data['country_to_block'] ?? null;
        if (! $countryCode) {
            Notification::make()->title('Selecteer een land')->danger()->send();

            return;
        }

        if (WebsiteBlockedCountry::where('country_code', $countryCode)->exists()) {
            Notification::make()->title('Land is al geblokkeerd')->warning()->send();

            return;
        }

        $countries = $this->getCountryOptions();
        $countryCode = (string) $countryCode;
        WebsiteBlockedCountry::create([
            'country_code' => $countryCode,
            'country_name' => $countries[$countryCode] ?? $countryCode,
        ]);

        $this->loadData();
        Notification::make()->title('Land geblokkeerd')->success()->send();
    }

    public function removeBlockedCountry(int $id): void
    {
        WebsiteBlockedCountry::destroy($id);
        $this->loadData();
        Notification::make()->title('Verwijderd')->success()->send();
    }

    public function addToWhitelist(): void
    {
        $ip = $this->data['whitelist_ip'] ?? null;
        $asn = $this->data['whitelist_asn'] ?? null;
        $countryCode = $this->data['whitelist_country'] ?? null;

        if (! $ip && ! $asn && ! $countryCode) {
            Notification::make()->title('Voer IP, ASN of land in')->danger()->send();

            return;
        }

        $countries = $this->getCountryOptions();
        $countryCodeStr = (string) ($countryCode ?? '');
        $countryName = $countryCode ? ($countries[$countryCodeStr] ?? null) : null;

        WebsiteIpWhitelist::create([
            'ip_address' => $ip ?? null,
            'asn' => $asn ?? null,
            'country_code' => $countryCodeStr,
            'country_name' => $countryName,
            'whitelist_asn' => ! empty($asn),
            'whitelist_country' => ! empty($countryCode),
        ]);

        $this->loadData();
        Notification::make()->title('Toegevoegd aan whitelist')->success()->send();
    }

    public function addToBlacklist(): void
    {
        $ip = $this->data['blacklist_ip'] ?? null;
        $asn = $this->data['blacklist_asn'] ?? null;
        $countryCode = $this->data['blacklist_country'] ?? null;

        if (! $ip && ! $asn && ! $countryCode) {
            Notification::make()->title('Voer IP, ASN of land in')->danger()->send();

            return;
        }

        $countries = $this->getCountryOptions();
        $countryCodeStr = (string) ($countryCode ?? '');
        $countryName = $countryCode ? ($countries[$countryCodeStr] ?? null) : null;

        WebsiteIpBlacklist::create([
            'ip_address' => $ip ?? null,
            'asn' => $asn ?? null,
            'country_code' => $countryCodeStr,
            'country_name' => $countryName,
            'blacklist_asn' => ! empty($asn),
            'blacklist_country' => ! empty($countryCode),
        ]);

        $this->loadData();
        Notification::make()->title('Toegevoegd aan blacklist')->success()->send();
    }

    public function removeFromWhitelist(int $id): void
    {
        WebsiteIpWhitelist::destroy($id);
        $this->loadData();
        Notification::make()->title('Verwijderd')->success()->send();
    }

    public function removeFromBlacklist(int $id): void
    {
        WebsiteIpBlacklist::destroy($id);
        $this->loadData();
        Notification::make()->title('Verwijderd')->success()->send();
    }

    public function lookupIp(): void
    {
        $ip = $this->data['lookup_ip'] ?? null;
        if (! $ip) {
            Notification::make()->title('Voer een IP in')->danger()->send();

            return;
        }

        $ipService = new IpLookupService('');
        $countryInfo = $ipService->getCountryInfo($ip);
        $threatInfo = $ipService->checkVpnProxyTor($ip);

        $message = "IP: {$ip}\n\n";

        if (! empty($countryInfo['country_name'])) {
            $message .= "📍 {$countryInfo['country_name']} ({$countryInfo['country_code']})\n";
            $message .= "   {$countryInfo['city']} - {$countryInfo['isp']}\n\n";
        }

        $message .= "🚫 Blokkeren:\n";
        $message .= '   VPN/Proxy: ' . ($threatInfo['is_vpn'] ? 'JA' : 'Nee') . "\n";
        $message .= '   TOR: ' . ($threatInfo['is_tor'] ? 'JA' : 'Nee') . "\n";
        $message .= '   Malicious: ' . ($threatInfo['is_malicious'] ? 'JA' : 'Nee') . "\n";

        Notification::make()->title('Resultaat')->body($message)->success()->send();
    }

    #[\Override]
    protected function getActions(): array
    {
        return [
            Action::make('save')->label('Opslaan')->action('save')->color('primary'),
            Action::make('refreshBlocklists')->label('Vernieuw Blocklists')->action('refreshBlocklists')->color('warning'),
        ];
    }
}