<?php

namespace App\Console\Commands;

use Carbon\Carbon;
use App\User;
use App\Services\Util;
use App\Models\UserHistory;
use App\Models\UserMessage;
use App\Mail\MailCustomMessage;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Mail;
use Illuminate\Support\Facades\Log;


class CheckPaymentsAccount extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'payments:check-accounts';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Überprüft Benutzer-Zahlungskonten und sendet Erinnerungen basierend auf Erneuerungsdaten.';

    /**
     * Execute the console command.
     */
    public function handle()
    {
        Log::channel('cron')->info('COMMAND [payments:check-accounts] started.');
        $this->info('COMMAND [payments:check-accounts] started.');

        // Die Logik wurde 1:1 aus der checkPaymentsAccounts-Methode übernommen
        $renewalDate = Carbon::now()->modify('+'.(config('mivita.remind_first_days')+1).' days');
        Log::channel('cron')->info('Erneuerungsdatum für Zahlungen: ' . $renewalDate->format('Y-m-d H:i:s'));
        
        $users = User::where('payment_account', '!=', NULL)
                ->where('active', '=', 1)
                ->where('blocked', '!=', 1)
                ->where('payment_account', '<', $renewalDate)
                ->get();

        Log::channel('cron')->info('Found ' . $users->count() . ' users for payment reminders.');
        $this->info('Found ' . $users->count() . ' users for payment reminders.');

        foreach ($users as $user){
           Log::channel('cron')->info('Prüfe Zahlungserinnerungen für Benutzer: ' . $user->email);
           $this->checkReminderPayments($user);
        }
        
        Log::channel('cron')->info('COMMAND [payments:check-accounts] finished.');
        $this->info('COMMAND [payments:check-accounts] finished.');
        return 0; // Success
    }

    /**
     * Überprüft und sendet Zahlungserinnerungen basierend auf Benutzerkontostand
     * 
     * RULES:
     * > 21 remind_first_days = 31 reminder_first
     * > 21 remind_first_days + sepa = 32 reminder_first_sepa  
     * > 14 remind_sec_days = 33 reminder_sec
     * > 2 remind_last_days = 34 reminder_last
     * > 0 deaktiv = 35 reminder_deaktiv
     * > 0 deaktiv + sepa = 36 reminder_deaktiv_sepa
     * == 7 abo_booking_days + sepa + cron = 37 reminder_collect_sepa
     *
     * @param User $user Benutzer
     * @return void
     */

    private function checkReminderPayments(User $user)
    {
        //35 reminder_deaktiv, 36 reminder_deaktiv_sepa
        if(!$user->isActiveAccount()){
            Log::channel('cron')->info('Inaktives Konto für Benutzer: ' . $user->email);
            $this->checkIsReminderSend($user, 35);
            return;
        }

        //34 reminder_last
        if($user->daysActiveAccount() <= config('mivita.remind_last_days')){
            Log::channel('cron')->info('Letzte Erinnerung für Benutzer: ' . $user->email . ' (Tage aktiv: ' . $user->daysActiveAccount() . ')');
            $this->checkIsReminderSend($user, 34);
            return;
        }

        //33 reminder_sec
        if($user->daysActiveAccount() <= config('mivita.remind_sec_days')){
            Log::channel('cron')->info('Zweite Erinnerung für Benutzer: ' . $user->email . ' (Tage aktiv: ' . $user->daysActiveAccount() . ')');
            $this->checkIsReminderSend($user, 33);
            return;
        }

        //31 reminder_first
        if($user->daysActiveAccount() > config('mivita.remind_sec_days')){
            Log::channel('cron')->info('Erste Erinnerung für Benutzer: ' . $user->email . ' (Tage aktiv: ' . $user->daysActiveAccount() . ')');
            $this->checkIsReminderSend($user, 31);
            return;
        }
    }

    /**
     * Überprüft, ob eine Erinnerung bereits gesendet wurde
     *
     * @param User $user Benutzer
     * @param int $status Status-Code der Erinnerung
     * @return bool
     */
    private function checkIsReminderSend(User $user, $status)
    {
        $isSend = UserHistory::whereUserId($user->id)
                ->whereAction('reminder_payments')
                ->whereIdentifier($user->payment_account)
                ->whereStatus($status)
                ->latest()
                ->first();

        if($isSend){
            Log::channel('cron')->info('Erinnerung bereits gesendet für Benutzer: ' . $user->email . ' (Status: ' . $status . ')');
            return true;
        }
        
        Log::channel('cron')->info('Sende neue Erinnerung für Benutzer: ' . $user->email . ' (Status: ' . $status . ')');
        $referenz = $this->sendReminderMail($user, $status);
        
        UserHistory::create([
            'user_id' => $user->id, 
            'action' => 'reminder_payments', 
            'referenz' => $referenz, 
            'identifier' => $user->payment_account, 
            'status' => $status
        ]);
        
        return false;
    }

    /**
     * Sendet eine Erinnerungs-E-Mail an den Benutzer
     *
     * @param User $user Benutzer
     * @param int $status Status-Code der Erinnerung
     * @return int
     */
    private function sendReminderMail(User $user, $status)
    {
        $days = abs($user->daysActiveAccount());
        $pay_date = Carbon::parse($user->payment_account)->modify('- ' . config('mivita.abo_booking_days') . ' days')->format('d.m.Y');
        $datetime = $user->getPaymentAccountDateFormat();
        $price = "";
        
        if($user->payment_order_id && isset($user->payment_order_product->price)){
            $price = 'von ' . $user->payment_order_product->getFormattedPrice() . ' EUR';
        }

        $message = __('reminder.copy_first_' . $status, ['days' => $days, 'datetime' => $datetime, 'price' => $price, 'pay_date' => $pay_date]);
        $message_last = __('reminder.copy_last_' . $status, ['days' => $days, 'datetime' => $datetime, 'price' => $price, 'pay_date' => $pay_date]);
        $button = __('reminder.button_' . $status);

        $message = preg_replace("/[\n\r]/", "", $message);
        $message_last = preg_replace("/[\n\r]/", "", $message_last);

        $data = [
            'subject' => __('reminder.subject') . " | ID: " . $status,
            'message' => $message,
            'message_last' => $message_last,
            'url' => route('user_membership'),
            'button' => $button,
        ];
        
        $sender = User::find(1);
        $customer_mail = UserMessage::create(['user_id' => $user->id, 'send_user_id' => $sender->id, 'email' => $user->email, 'subject' => $data['subject'], 'message' => $data['message'] . " " . $data['message_last']]);
        
        try {
            if(!Util::isTestSystem()){
                if($status >= 34){
                    Log::channel('cron')->info('Sende kritische Erinnerung mit BCC an: ' . $user->email);
                    Mail::to($user->email)
                        ->locale($user->getLocale())
                        ->bcc(config('app.default_mail'))
                        ->send(new MailCustomMessage($user, $data, $sender, false));
                } else {
                    Log::channel('cron')->info('Sende normale Erinnerung an: ' . $user->email);
                    Mail::to($user->email)
                        ->locale($user->getLocale())
                        ->send(new MailCustomMessage($user, $data, $sender, false));
                }
            } else {
                Log::channel('cron')->info('Testsystem: E-Mail-Versand simuliert für: ' . $user->email);
            }
        } catch(\Exception $e) {
            Log::channel('cron')->error('Mail-Fehler für Benutzer ' . $user->email . ': ' . $e->getMessage());
            $customer_mail->fail = true;
            $customer_mail->error = $e->getMessage();
            $customer_mail->save();
            return 0;
        }
        
        $customer_mail->send = true;
        $customer_mail->sent_at = now();
        $customer_mail->save();
        
        Log::channel('cron')->info('Erinnerungsmail erfolgreich gesendet an: ' . $user->email);
        return 1;
    }
}