<?php

namespace App\Livewire\Web\Components\Ui;

use Acme\ContactForm\ContactFormService;
use Acme\ContactForm\SpamDetector;
use App\Models\CmsBrand;
use Illuminate\Validation\Rule;
use Livewire\Component;

class ContactForm extends Component
{
    public string $firstName = '';

    public string $lastName = '';

    public string $company = '';

    public string $email = '';

    public string $phone = '';

    public string $subject = '';

    public string $message = '';

    public bool $privacy = false;

    public bool $success = false;

    /** @var string Hidden honeypot field */
    public string $website = '';

    public ?int $formLoadedAt = null;

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

    /** Farbwelt der Seite (`interior` | `immobilien`). */
    public string $world = 'interior';

    public function mount(string $world = 'interior'): void
    {
        $this->world = $world === 'immobilien' ? 'immobilien' : 'interior';
        $this->content = $this->loadContent();
        $this->formLoadedAt = time();
    }

    /**
     * Inhalte der Welt. Die Immobilien-Welt liegt als Overlay über der Interior-Sektion:
     * `contact_form_immobilien` trägt nur, was abweicht (Einstieg, Betreffe) – Adresse,
     * Beschriftungen und Social Media erbt sie von `contact_form`.
     *
     * @return array<string, mixed>
     */
    private function loadContent(): array
    {
        $base = cms_theme_section('contact_form');
        $base = is_array($base) ? $base : [];

        if ($this->world !== 'immobilien') {
            return $base;
        }

        $overlay = cms_theme_section('contact_form_immobilien');

        if (! is_array($overlay)) {
            return $base;
        }

        return array_replace_recursive($base, $overlay);
    }

    /**
     * Betreffe in Gruppen: Interior (mit den gepflegten Kernmarken vorneweg), Immobilien, B2in.
     * Die Welt der Seite bestimmt die Reihenfolge – ihre Gruppe steht oben.
     *
     * Ohne `subject_groups` (aeltere CMS-Staende) faellt das Formular auf die flache Liste zurueck.
     *
     * @return array<string, array{label: string, subjects: array<string, string>}>
     */
    public function getSubjectGroupsProperty(): array
    {
        $groups = $this->content['form']['subject_groups'] ?? null;

        if (! is_array($groups) || $groups === []) {
            $flat = $this->content['form']['subjects'] ?? [];
            unset($flat['']);

            return $flat === [] ? [] : ['all' => ['label' => '', 'subjects' => $flat]];
        }

        $brands = [];

        foreach (CmsBrand::forFrontend() as $slug => $brand) {
            $brands[$slug] = (string) ($brand['name'] ?? $slug);
        }

        $out = [];

        foreach ($groups as $key => $group) {
            $subjects = is_array($group['subjects'] ?? null) ? $group['subjects'] : [];

            if ($key === 'interior') {
                $subjects = $brands + $subjects;
            }

            $out[$key] = [
                'label' => (string) ($group['label'] ?? ''),
                'subjects' => $subjects,
            ];
        }

        $first = $this->world === 'immobilien' ? 'immobilien' : 'interior';

        if (isset($out[$first])) {
            $out = [$first => $out[$first]] + $out;
        }

        return $out;
    }

    /**
     * Alle waehlbaren Betreffe als flache Liste (Schluessel → Beschriftung).
     *
     * @return array<string, string>
     */
    public function getSubjectsProperty(): array
    {
        $flat = [];

        foreach ($this->getSubjectGroupsProperty() as $group) {
            $flat += $group['subjects'];
        }

        return $flat;
    }

    public function getSubjectPlaceholderProperty(): string
    {
        return (string) ($this->content['form']['subjects'][''] ?? $this->content['form']['subject_placeholder'] ?? __('ui.contact_form.subject_placeholder'));
    }

    /** @return array<int, array<string, mixed>> */
    public function getContactInfoProperty(): array
    {
        return $this->content['contact_info'] ?? [];
    }

    public function submit(ContactFormService $service): void
    {
        $this->validate([
            'firstName' => ['required', 'string', 'max:255'],
            'lastName' => ['required', 'string', 'max:255'],
            'email' => ['required', 'email:rfc', 'max:255'],
            'subject' => ['required', 'string', Rule::in(array_keys($this->subjects))],
            'message' => ['required', 'string', 'max:2000'],
            'company' => ['nullable', 'string', 'max:255'],
            'phone' => ['nullable', 'string', 'max:255'],
            'privacy' => ['accepted'],
            'website' => ['nullable', 'string', 'max:0'],
        ]);

        $spamDetector = SpamDetector::fromConfig();
        $payload = [
            'first_name' => $this->firstName,
            'last_name' => $this->lastName,
            'email' => $this->email,
            'subject' => $this->subject,
            'message' => $this->message,
            'company' => $this->company,
            'phone' => $this->phone,
            'website' => $this->website,
            'ip' => request()->ip(),
            'user_agent' => request()->userAgent(),
            'is_spam' => false,
        ];

        $payload['is_spam'] = $spamDetector->detect($payload, $this->formLoadedAt);

        $subjectLabel = $this->getSubjectsProperty()[$this->subject] ?? $this->subject;
        $prefix = $this->world === 'immobilien' ? 'Kontaktanfrage B2in Immobilien' : 'Kontaktanfrage B2in';
        $subjectLine = $subjectLabel
            ? $prefix.': '.$subjectLabel
            : __('contact-form::contact-form.default_subject');
        $service->handle($payload, $subjectLine, 'contact-form');

        $this->success = true;
        $this->firstName = '';
        $this->lastName = '';
        $this->company = '';
        $this->email = '';
        $this->phone = '';
        $this->subject = '';
        $this->message = '';
        $this->privacy = false;
        $this->website = '';
        $this->formLoadedAt = time();
    }

    public function render(): \Illuminate\View\View
    {
        return view('livewire.web.components.ui.contact-form');
    }
}