<?php

namespace App\Console\Commands;

use App\Mail\MailAboExecutionReminder;
use App\Models\UserAbo;
use App\Services\AboHelper;
use Carbon\Carbon;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Mail;

class AboSendExecutionReminder extends Command
{
    /**
     * Reminder vor der Abo-Ausführung: weist auf das Zeitfenster für einmalige
     * Zusatzprodukte hin. Berater erhalten den Link ins Sales Center, Endkunden
     * ins Kundenportal.
     */
    protected $signature = 'abo:send-execution-reminder {--dry-run : Nur zählen, nichts versenden}';

    protected $description = 'Versendet Reminder-Mails für anstehende Abo-Lieferungen (Einmalprodukte-Fenster)';

    public function handle(): int
    {
        $windowDays = AboHelper::getOneTimeWindowDays();
        $targetDate = Carbon::today()->addDays($windowDays);
        $dryRun = (bool) $this->option('dry-run');

        $abos = UserAbo::query()
            ->with(['user', 'shopping_user'])
            ->where('active', true)
            ->where('status', 2)
            ->whereIn('is_for', ['me', 'ot'])
            ->whereDate('next_date', $targetDate->toDateString())
            ->where(function ($query) use ($targetDate): void {
                $query->whereNull('onetime_reminder_sent_for')
                    ->orWhereDate('onetime_reminder_sent_for', '!=', $targetDate->toDateString());
            })
            ->get();

        $sent = 0;
        $skipped = 0;

        foreach ($abos as $abo) {
            $email = $this->recipientEmail($abo);

            if (! $email) {
                $skipped++;

                continue;
            }

            // Symfony Mailer lehnt Nicht-ASCII im local-part ab. Vorab pruefen, damit
            // im Log die Adresse statt einer Transport-Exception steht.
            if (! filter_var($email, FILTER_VALIDATE_EMAIL)) {
                $skipped++;
                Log::channel('abo_order')->error('AboSendExecutionReminder: Empfaengeradresse nicht versandfaehig', [
                    'abo_id' => $abo->id,
                    'email' => $email,
                ]);

                continue;
            }

            if ($dryRun) {
                $sent++;

                continue;
            }

            try {
                Mail::to($email)
                    ->locale($this->recipientLocale($abo))
                    ->send(new MailAboExecutionReminder($abo));

                $abo->onetime_reminder_sent_for = $abo->next_date;
                $abo->save();
                $sent++;
            } catch (\Throwable $e) {
                $skipped++;
                Log::channel('abo_order')->error('AboSendExecutionReminder: Versand fehlgeschlagen', [
                    'abo_id' => $abo->id,
                    'error' => $e->getMessage(),
                ]);
            }
        }

        $this->info(sprintf(
            'Reminder %s: %d versendet, %d übersprungen (Zieldatum %s, Fenster %d Tage).',
            $dryRun ? '(dry-run)' : '',
            $sent,
            $skipped,
            $targetDate->toDateString(),
            $windowDays
        ));

        return self::SUCCESS;
    }

    private function recipientEmail(UserAbo $abo): ?string
    {
        if ($abo->email) {
            return $abo->email;
        }

        if ($abo->is_for === 'me') {
            return $abo->user?->email;
        }

        return $abo->shopping_user?->billing_email;
    }

    private function recipientLocale(UserAbo $abo): string
    {
        $locale = $abo->is_for === 'me'
            ? $abo->user?->getLocale()
            : $abo->shopping_user?->getLocale();

        return $locale ?: 'de';
    }
}