<?php

namespace App\Livewire\Ui\Webmail;

use App\Models\MailUser;
use Livewire\Attributes\Layout;
use Livewire\Attributes\Title;
use Livewire\Attributes\Url;
use Livewire\Component;

#[Layout('layouts.webmail')]
#[Title('Einstellungen · Webmail')]
class Settings extends Component
{
    #[Url(as: 'tab')]
    public string $activeTab = 'allgemein';

    // ── Allgemein ────────────────────────────────────────────────────────────
    public bool   $showSubscribedOnly       = false;
    public bool   $fetchUnreadAll           = false;
    public bool   $threadMessages           = false;
    public bool   $showFullAddress          = false;
    public bool   $hideEmbeddedAttachments  = false;
    public bool   $attachmentsAbove         = false;
    public bool   $autoMarkRead             = true;
    public int    $autoMarkReadDelay        = 0;
    public string $forwardMode              = 'inline';
    public bool   $replyBelowQuote          = false;
    public bool   $signatureNew             = true;
    public bool   $signatureReply           = false;
    public bool   $signatureForward         = false;
    public bool   $composeHtml              = true;
    public int    $defaultFontSize          = 13;
    public string $showRemoteImages         = 'never';
    public int    $autosaveInterval         = 5;
    public string $signature                = '';

    // ── Filter ───────────────────────────────────────────────────────────────
    public array  $filterRules   = [];
    public string $newField      = 'from';
    public string $newOp         = 'is';
    public string $newValue      = '';
    public string $newAction     = 'discard';
    public string $newFolder     = 'Junk';

    // ── Abwesenheit ──────────────────────────────────────────────────────────
    public bool   $vacationEnabled = false;
    public string $vacationSubject = '';
    public string $vacationBody    = '';

    // ── Weiterleitung ─────────────────────────────────────────────────────────
    public string $forwardTo = '';

    // ─────────────────────────────────────────────────────────────────────────

    public function mount(): void
    {
        if (! session('webmail_email')) {
            $this->redirect(route('ui.webmail.login'));
            return;
        }

        $user = MailUser::where('email', session('webmail_email'))->first();
        if (! $user) return;

        $prefs = $user->webmail_prefs ?? [];

        $this->showSubscribedOnly      = (bool) ($prefs['show_subscribed_only']      ?? false);
        $this->fetchUnreadAll          = (bool) ($prefs['fetch_unread_all']          ?? false);
        $this->threadMessages          = (bool) ($prefs['thread_messages']           ?? false);
        $this->showFullAddress         = (bool) ($prefs['show_full_address']         ?? false);
        $this->hideEmbeddedAttachments = (bool) ($prefs['hide_embedded_attachments'] ?? false);
        $this->attachmentsAbove        = (bool) ($prefs['attachments_above']         ?? false);
        $this->autoMarkRead            = (bool) ($prefs['auto_mark_read']            ?? true);
        $this->autoMarkReadDelay       = (int)  ($prefs['auto_mark_read_delay']      ?? 0);
        $this->forwardMode             = (string)($prefs['forward_mode']             ?? 'inline');
        $this->replyBelowQuote         = (bool) ($prefs['reply_below_quote']         ?? false);
        $this->signatureNew            = (bool) ($prefs['signature_new']             ?? true);
        $this->signatureReply          = (bool) ($prefs['signature_reply']           ?? false);
        $this->signatureForward        = (bool) ($prefs['signature_forward']         ?? false);
        $this->composeHtml             = (bool) ($prefs['compose_html']              ?? true);
        $this->defaultFontSize         = (int)  ($prefs['default_font_size']         ?? 13);
        $this->showRemoteImages        = (string)($prefs['show_remote_images']       ?? 'never');
        $this->autosaveInterval        = (int)  ($prefs['autosave_interval']         ?? 5);
        $this->signature               = (string)($user->signature                  ?? '');

        $this->filterRules    = $user->sieve_filter_rules ?? [];
        $this->vacationEnabled = (bool) $user->vacation_enabled;
        $this->vacationSubject = (string)($user->vacation_subject ?? '');
        $this->vacationBody    = (string)($user->vacation_body    ?? '');
        $this->forwardTo       = (string)($user->forward_to       ?? '');
    }

    public function save(): void
    {
        $this->validate([
            'forwardTo'       => 'nullable|email',
            'vacationSubject' => 'nullable|string|max:255',
            'vacationBody'    => 'nullable|string|max:4000',
            'newValue'        => 'nullable|string|max:255',
        ]);

        $user = MailUser::where('email', session('webmail_email'))->first();
        if (! $user) return;

        $user->update([
            'webmail_prefs' => [
                'show_subscribed_only'      => $this->showSubscribedOnly,
                'fetch_unread_all'          => $this->fetchUnreadAll,
                'thread_messages'           => $this->threadMessages,
                'show_full_address'         => $this->showFullAddress,
                'hide_embedded_attachments' => $this->hideEmbeddedAttachments,
                'attachments_above'         => $this->attachmentsAbove,
                'auto_mark_read'            => $this->autoMarkRead,
                'auto_mark_read_delay'      => $this->autoMarkReadDelay,
                'forward_mode'              => $this->forwardMode,
                'reply_below_quote'         => $this->replyBelowQuote,
                'signature_new'             => $this->signatureNew,
                'signature_reply'           => $this->signatureReply,
                'signature_forward'         => $this->signatureForward,
                'compose_html'              => $this->composeHtml,
                'default_font_size'         => $this->defaultFontSize,
                'show_remote_images'        => $this->showRemoteImages,
                'autosave_interval'         => $this->autosaveInterval,
            ],
            'signature'           => $this->signature ?: null,
            'sieve_filter_rules'  => $this->filterRules,
            'vacation_enabled'    => $this->vacationEnabled,
            'vacation_subject'    => $this->vacationSubject ?: null,
            'vacation_body'       => $this->vacationBody    ?: null,
            'forward_to'          => $this->forwardTo       ?: null,
        ]);

        $this->applySieve($user->fresh());

        $this->dispatch('toast', type: 'done', badge: 'Webmail',
            title: 'Gespeichert', text: 'Einstellungen wurden gespeichert.', duration: 3000);
    }

    public function addFilterRule(): void
    {
        $this->validate(['newValue' => 'required|string|max:255']);

        $this->filterRules[] = [
            'id'     => uniqid('r', true),
            'field'  => $this->newField,
            'op'     => $this->newOp,
            'value'  => trim($this->newValue),
            'action' => $this->newAction,
            'folder' => $this->newFolder,
        ];

        $this->newValue = '';
    }

    public function removeFilterRule(string $id): void
    {
        $this->filterRules = array_values(
            array_filter($this->filterRules, fn($r) => $r['id'] !== $id)
        );
    }

    private function applySieve(MailUser $user): void
    {
        $rules   = json_encode($user->sieve_filter_rules ?? []);
        $email   = escapeshellarg($user->email);
        $forward = escapeshellarg($user->forward_to ?? '');
        $vacEn   = $user->vacation_enabled ? '1' : '0';
        $vacSubj = escapeshellarg($user->vacation_subject ?? 'Ich bin derzeit nicht erreichbar.');
        $vacBody = escapeshellarg($user->vacation_body ?? '');
        $rulesEsc= escapeshellarg($rules);

        $cmd = "sudo -n /usr/local/sbin/mailwolt-apply-sieve"
             . " --email {$email}"
             . " --forward {$forward}"
             . " --vacation-enabled {$vacEn}"
             . " --vacation-subject {$vacSubj}"
             . " --vacation-body {$vacBody}"
             . " --filter-rules {$rulesEsc}"
             . " 2>&1";

        $out = shell_exec($cmd);
        if ($out) {
            \Illuminate\Support\Facades\Log::info('mailwolt-apply-sieve', ['output' => $out]);
        }
    }

    public function render()
    {
        return view('livewire.ui.webmail.settings');
    }
}