<?php

namespace Modules\Admin\Filament\Pages;

use BackedEnum;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\Hidden;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TagsInput;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Pages\SettingsPage;
use Filament\Schemas\Components\Utilities\Get;
use Filament\Schemas\Components\Utilities\Set;
use Filament\Schemas\Schema;
use Modules\Admin\Support\HomeSlideFormSchema;
use Modules\Location\Support\CountryCodeManager;
use Modules\S3\Support\MediaStorage;
use Modules\Site\App\Settings\GeneralSettings;
use Modules\Site\App\Support\HomeSlideDefaults;
use Tapp\FilamentCountryCodeField\Forms\Components\CountryCodeSelect;
use UnitEnum;
use Ysfkaya\FilamentPhoneInput\Forms\PhoneInput;

class ManageGeneralSettings extends SettingsPage
{
    protected static string $settings = GeneralSettings::class;

    protected static ?string $title = 'Genel Ayarlar';

    protected static ?string $navigationLabel = 'Genel Ayarlar';

    protected static string|BackedEnum|null $navigationIcon = 'heroicon-o-cog-6-tooth';

    protected static string|UnitEnum|null $navigationGroup = 'Ayarlar';

    protected static ?int $navigationSort = 1;

    protected function mutateFormDataBeforeFill(array $data): array
    {
        $defaults = $this->defaultFormData();

        return [
            'site_name' => filled($data['site_name'] ?? null) ? $data['site_name'] : $defaults['site_name'],
            'site_description' => filled($data['site_description'] ?? null) ? $data['site_description'] : $defaults['site_description'],
            'media_disk' => MediaStorage::normalizeDriver($data['media_disk'] ?? $defaults['media_disk']),
            'home_slides' => $this->normalizeHomeSlides(
                $data['home_slides'] ?? $defaults['home_slides'],
                MediaStorage::storedDisk('public'),
            ),
            'site_logo' => $data['site_logo'] ?? null,
            'site_logo_disk' => filled($data['site_logo'] ?? null)
                ? MediaStorage::storedDisk($data['site_logo_disk'] ?? 'public')
                : null,
            'sender_name' => filled($data['sender_name'] ?? null) ? $data['sender_name'] : $defaults['sender_name'],
            'sender_email' => filled($data['sender_email'] ?? null) ? $data['sender_email'] : $defaults['sender_email'],
            'default_language' => filled($data['default_language'] ?? null) ? $data['default_language'] : $defaults['default_language'],
            'default_country_code' => filled($data['default_country_code'] ?? null) ? $data['default_country_code'] : $defaults['default_country_code'],
            'currencies' => $this->normalizeCurrencies($data['currencies'] ?? $defaults['currencies']),
            'linkedin_url' => filled($data['linkedin_url'] ?? null) ? $data['linkedin_url'] : $defaults['linkedin_url'],
            'instagram_url' => filled($data['instagram_url'] ?? null) ? $data['instagram_url'] : $defaults['instagram_url'],
            'whatsapp' => filled($data['whatsapp'] ?? null) ? $data['whatsapp'] : $defaults['whatsapp'],
            'enable_google_maps' => (bool) ($data['enable_google_maps'] ?? $defaults['enable_google_maps']),
            'google_maps_api_key' => $data['google_maps_api_key'] ?? null,
            'enable_google_login' => (bool) ($data['enable_google_login'] ?? $defaults['enable_google_login']),
            'google_client_id' => $data['google_client_id'] ?? null,
            'google_client_secret' => $data['google_client_secret'] ?? null,
            'enable_facebook_login' => (bool) ($data['enable_facebook_login'] ?? $defaults['enable_facebook_login']),
            'facebook_client_id' => $data['facebook_client_id'] ?? null,
            'facebook_client_secret' => $data['facebook_client_secret'] ?? null,
            'enable_apple_login' => (bool) ($data['enable_apple_login'] ?? $defaults['enable_apple_login']),
            'apple_client_id' => $data['apple_client_id'] ?? null,
            'apple_client_secret' => $data['apple_client_secret'] ?? null,
        ];
    }

    protected function mutateFormDataBeforeSave(array $data): array
    {
        $mediaDriver = MediaStorage::normalizeDriver($data['media_disk'] ?? null);
        $mediaDisk = MediaStorage::diskFromDriver($mediaDriver);

        $data['media_disk'] = $mediaDriver;
        $data['home_slides'] = $this->normalizeHomeSlides($data['home_slides'] ?? [], $mediaDisk);
        $data['site_logo_disk'] = MediaStorage::managesPath($data['site_logo'] ?? null)
            ? MediaStorage::storedDisk($data['site_logo_disk'] ?? null, $mediaDriver)
            : null;
        $data['currencies'] = $this->normalizeCurrencies($data['currencies'] ?? []);

        return $data;
    }

    public function form(Schema $schema): Schema
    {
        $defaults = $this->defaultFormData();

        return $schema
            ->components([
                TextInput::make('site_name')
                    ->label('Site Name')
                    ->default($defaults['site_name'])
                    ->required()
                    ->maxLength(255),
                Textarea::make('site_description')
                    ->label('Site Description')
                    ->default($defaults['site_description'])
                    ->rows(3)
                    ->maxLength(500),
                Select::make('media_disk')
                    ->label('Media Storage')
                    ->options(MediaStorage::options())
                    ->default($defaults['media_disk'])
                    ->required()
                    ->native(false)
                    ->helperText('Storage driver used for listing images, videos, the site logo, and home slide visuals.'),
                HomeSlideFormSchema::make(
                    $defaults['home_slides'],
                    fn ($state): array => $this->normalizeHomeSlides($state, MediaStorage::activeDisk()),
                ),
                Hidden::make('site_logo_disk'),
                FileUpload::make('site_logo')
                    ->label('Site Logo')
                    ->image()
                    ->disk(fn (Get $get): string => MediaStorage::storedDisk($get('site_logo_disk'), $get('media_disk')))
                    ->directory('settings')
                    ->visibility('public')
                    ->afterStateUpdated(function (Get $get, Set $set, mixed $state): void {
                        $set(
                            'site_logo_disk',
                            MediaStorage::managesPath($state)
                                ? MediaStorage::diskFromDriver($get('media_disk'))
                                : null,
                        );
                    }),
                TextInput::make('sender_name')
                    ->label('Sender Name')
                    ->default($defaults['sender_name'])
                    ->required()
                    ->maxLength(120),
                TextInput::make('sender_email')
                    ->label('Sender Email')
                    ->email()
                    ->default($defaults['sender_email'])
                    ->required()
                    ->maxLength(255),
                Select::make('default_language')
                    ->label('Default Language')
                    ->options($this->localeOptions())
                    ->default($defaults['default_language'])
                    ->required()
                    ->searchable(),
                CountryCodeSelect::make('default_country_code')
                    ->label('Default Country')
                    ->default($defaults['default_country_code'])
                    ->required()
                    ->helperText('Used as the default country in panel forms.'),
                TagsInput::make('currencies')
                    ->label('Currencies')
                    ->placeholder('TRY')
                    ->default($defaults['currencies'])
                    ->helperText('Add 3-letter currency codes such as TRY, USD, or EUR.')
                    ->required()
                    ->rules(['array', 'min:1'])
                    ->afterStateHydrated(fn (TagsInput $component, $state) => $component->state($this->normalizeCurrencies($state)))
                    ->dehydrateStateUsing(fn ($state) => $this->normalizeCurrencies($state)),
                TextInput::make('linkedin_url')
                    ->label('LinkedIn URL')
                    ->url()
                    ->default($defaults['linkedin_url'])
                    ->nullable()
                    ->maxLength(255),
                TextInput::make('instagram_url')
                    ->label('Instagram URL')
                    ->url()
                    ->default($defaults['instagram_url'])
                    ->nullable()
                    ->maxLength(255),
                PhoneInput::make('whatsapp')
                    ->label('WhatsApp')
                    ->defaultCountry(CountryCodeManager::defaultCountryIso2())
                    ->default($defaults['whatsapp'])
                    ->nullable()
                    ->formatAsYouType()
                    ->helperText('Use international format. Example: +905551112233'),
                Toggle::make('enable_google_maps')
                    ->label('Google Maps Enabled')
                    ->default($defaults['enable_google_maps']),
                TextInput::make('google_maps_api_key')
                    ->label('Google Maps API Key')
                    ->password()
                    ->revealable()
                    ->nullable()
                    ->maxLength(255)
                    ->helperText('Required to enable map fields in listing forms.'),
                Toggle::make('enable_google_login')
                    ->label('Google Login Enabled')
                    ->default($defaults['enable_google_login']),
                TextInput::make('google_client_id')
                    ->label('Google Client ID')
                    ->nullable()
                    ->maxLength(255),
                TextInput::make('google_client_secret')
                    ->label('Google Client Secret')
                    ->password()
                    ->revealable()
                    ->nullable()
                    ->maxLength(255),
                Toggle::make('enable_facebook_login')
                    ->label('Facebook Login Enabled')
                    ->default($defaults['enable_facebook_login']),
                TextInput::make('facebook_client_id')
                    ->label('Facebook Client ID')
                    ->nullable()
                    ->maxLength(255),
                TextInput::make('facebook_client_secret')
                    ->label('Facebook Client Secret')
                    ->password()
                    ->revealable()
                    ->nullable()
                    ->maxLength(255),
                Toggle::make('enable_apple_login')
                    ->label('Apple Login Enabled')
                    ->default($defaults['enable_apple_login']),
                TextInput::make('apple_client_id')
                    ->label('Apple Client ID')
                    ->nullable()
                    ->maxLength(255),
                TextInput::make('apple_client_secret')
                    ->label('Apple Client Secret')
                    ->password()
                    ->revealable()
                    ->nullable()
                    ->maxLength(255),
            ]);
    }

    private function defaultFormData(): array
    {
        $siteName = (string) config('app.name', 'OpenClassify');
        $siteHost = parse_url((string) config('app.url', 'https://oc2.test'), PHP_URL_HOST) ?: 'oc2.test';

        return [
            'site_name' => $siteName,
            'site_description' => 'A fast and secure marketplace for buying and selling.',
            'media_disk' => MediaStorage::defaultDriver(),
            'home_slides' => $this->defaultHomeSlides(),
            'site_logo_disk' => null,
            'sender_name' => $siteName,
            'sender_email' => (string) config('mail.from.address', 'info@'.$siteHost),
            'default_language' => in_array(config('app.locale'), array_keys($this->localeOptions()), true) ? (string) config('app.locale') : 'en',
            'default_country_code' => CountryCodeManager::normalizeCountryCode(config('app.default_country_code', '+90')),
            'currencies' => $this->normalizeCurrencies(config('app.currencies', ['TRY'])),
            'linkedin_url' => 'https://www.linkedin.com/company/openclassify',
            'instagram_url' => 'https://www.instagram.com/openclassify',
            'whatsapp' => '+905551112233',
            'enable_google_maps' => false,
            'enable_google_login' => false,
            'enable_facebook_login' => false,
            'enable_apple_login' => false,
        ];
    }

    private function localeOptions(): array
    {
        $labels = [
            'en' => 'English',
            'tr' => 'Turkish',
        ];

        return collect(config('app.available_locales', ['en']))
            ->mapWithKeys(fn (string $locale) => [$locale => $labels[$locale] ?? strtoupper($locale)])
            ->all();
    }

    private function normalizeCurrencies(null|array|string $state): array
    {
        $source = is_array($state) ? $state : (filled($state) ? [$state] : []);

        $normalized = collect($source)
            ->filter(fn ($currency) => is_string($currency) && trim($currency) !== '')
            ->map(fn (string $currency) => strtoupper(substr(trim($currency), 0, 3)))
            ->filter(fn (string $currency) => strlen($currency) === 3)
            ->unique()
            ->values()
            ->all();

        return $normalized !== [] ? $normalized : ['USD'];
    }

    private function defaultHomeSlides(): array
    {
        return HomeSlideDefaults::defaults();
    }

    private function normalizeHomeSlides(mixed $state, ?string $defaultDisk = null): array
    {
        return HomeSlideDefaults::normalize($state, $defaultDisk);
    }
}