<?php

namespace App\Services\BusinessPlan;

use App\Models\ShoppingOrder;
use App\Models\UserSalesVolume;
use App\Services\Incentive\IncentiveTracker;
use App\Services\Util;
use App\User;
use stdClass;

class SalesPointsVolume
{
    public static function changeSalesPointsVolumeUser(ShoppingOrder $shoppingOrder, $to_user_id)
    {

        if ($shoppingOrder->user_sales_volume) {
            $to_user_id = intval($to_user_id);
            if ($shoppingOrder->user_sales_volume->user_id === $to_user_id) {
                \Session()->flash('alert-error', 'Keine Änderung: selber Berater');

                return;
            }
            if (! $shoppingOrder->user_sales_volume->isCurrentMonthYear()) {
                \Session()->flash('alert-error', 'Änderung muss im selben Monat sein');

                return;
            }

            $month = $shoppingOrder->user_sales_volume->month;
            $year = $shoppingOrder->user_sales_volume->year;
            $form_user_id = $shoppingOrder->user_sales_volume->user_id;

            $to_user = User::find($to_user_id);
            $form_user = User::find($form_user_id);

            $shoppingOrder->user_sales_volume->user_id = $to_user_id;
            $shoppingOrder->user_sales_volume->message = 'zugewiesen: '.date('d.m.Y');

            $syslog = $shoppingOrder->user_sales_volume->syslog;
            $from_email = $form_user ? $form_user->email : '';
            $to_email = $to_user ? $to_user->email : '';
            $syslog[date('d.m.Y-h:i:s')] = 'change form: #'.$form_user_id.' '.$from_email.' to: #'.$to_user_id.' '.$to_email;
            $shoppingOrder->user_sales_volume->syslog = $syslog;

            $shoppingOrder->user_sales_volume->save();

            // recalculate
            self::reCalculateSalesPointsVolume($to_user_id, $month, $year);
            self::reCalculateSalesPointsVolume($form_user_id, $month, $year);
            \Session()->flash('alert-save', true);
        }
    }

    private static function add_KP_TP_Points($userSalesVolume, $month_points)
    {
        if ($userSalesVolume->status_points === 2) { // KP
            $month_points->KP += $userSalesVolume->points;
        } else {
            // === 1 //TP + KP
            $month_points->KP += $userSalesVolume->points;
            $month_points->TP += $userSalesVolume->points;
        }

        return $month_points;
    }

    public static function reCalculateSalesPointsVolume($user_id, $month, $year)
    {

        $userSalesVolumes = UserSalesVolume::where('user_id', $user_id)->where('month', $month)->where('year', $year)->orderBy('id', 'ASC')->get();
        $month_points = new stdClass;
        $month_points->KP = 0;
        $month_points->TP = 0;
        $month_total_net = 0;
        $month_shop_points = 0;
        $month_shop_total_net = 0;
        // TDOO Status === 3???

        foreach ($userSalesVolumes as $userSalesVolume) {
            switch ($userSalesVolume->status) {
                case 1: // Bestellung Berater
                    $month_points = self::add_KP_TP_Points($userSalesVolume, $month_points);
                    $month_total_net += $userSalesVolume->total_net;
                    break;
                case 2: // Shop
                    $month_shop_points += $userSalesVolume->points;
                    $month_shop_total_net += $userSalesVolume->total_net;
                    break;
                case 4: // Gutschrift
                    $month_points = self::add_KP_TP_Points($userSalesVolume, $month_points);

                    if ($userSalesVolume->status_turnover === 2) {
                        $month_shop_total_net += $userSalesVolume->total_net;
                        // ggf hier zu den Shop Points zählen wäre aber immer KP + TP kann nicht keine trennung bei month_shop_points
                    } else {
                        $month_total_net += $userSalesVolume->total_net;
                    }

                    break;
                case 5: // Registrierung
                    $month_points = self::add_KP_TP_Points($userSalesVolume, $month_points);
                    $month_total_net += $userSalesVolume->total_net;
                    break;
                case 6: // Storno - negative Punkte und Beträge
                    $month_points = self::add_KP_TP_Points($userSalesVolume, $month_points);

                    if ($userSalesVolume->status_turnover === 2) {
                        $month_shop_points += $userSalesVolume->points; // bereits negativ
                        $month_shop_total_net += $userSalesVolume->total_net; // bereits negativ
                    } else {
                        $month_total_net += $userSalesVolume->total_net; // bereits negativ
                    }

                    break;
            }
            $userSalesVolume->month_shop_points = $month_shop_points;
            $userSalesVolume->month_shop_total_net = $month_shop_total_net;
            $userSalesVolume->month_KP_points = $month_points->KP;
            $userSalesVolume->month_TP_points = $month_points->TP;
            $userSalesVolume->month_total_net = $month_total_net;
            $userSalesVolume->save();
        }
    }

    public static function User(ShoppingOrder $shoppingOrder)
    {

        /*
        status
            1 => 'hinzugefügt aus Bestellung',
            2 => 'hinzugefügt aus Shop',
            3 => 'hinzugefügt aus Shop / pending',
        */

        $status = self::getStatusByOrderPaymentFor($shoppingOrder);
        $user_id = $shoppingOrder->auth_user_id ? $shoppingOrder->auth_user_id : $shoppingOrder->member_id;
        // akuteller tag / Monat.
        $month = date('m');
        $year = date('Y');
        $date = date('d.m.Y');

        if ($status === 3) { // shop bestellung User pending if is_like
            $user_id = null;
        }
        $user_sales_volume = UserSalesVolume::create([
            'user_id' => $user_id,
            'shopping_order_id' => $shoppingOrder->id,
            'month' => $month,
            'year' => $year,
            'date' => $date,
            'points' => $shoppingOrder->points,
            'total_net' => $shoppingOrder->subtotal,
            'status_points' => 1, // KP + TP
            'message' => '',
            'status' => $status,
        ]);

        if ($status !== 3) {
            self::reCalculateSalesPointsVolume($user_sales_volume->user_id, $user_sales_volume->month, $user_sales_volume->year);
        }

        return $user_sales_volume;
    }

    public static function setToUserAndReCalculate(UserSalesVolume $user_sales_volume, $user_id)
    {

        // set month year date new, calculate it in the currently month!
        // If the month has changed, it can no longer be added to the month before
        $month = date('m');
        $year = date('Y');
        $date = date('d.m.Y');

        $user_sales_volume->user_id = $user_id;
        $user_sales_volume->month = $month;
        $user_sales_volume->year = $year;
        $user_sales_volume->date = $date;
        $user_sales_volume->status = 2; // hinzugefügt aus Shop can only Pending
        $user_sales_volume->save();

        self::reCalculateSalesPointsVolume($user_id, $month, $year);
    }

    public static function getStatusByOrderPaymentFor(ShoppingOrder $shoppingOrder)
    {
        if ($shoppingOrder->payment_for) {
            if ($shoppingOrder->payment_for === 6) { // Kunde-Shop
                if ($shoppingOrder->shopping_user && $shoppingOrder->shopping_user->is_like) {
                    return 3; // shop Kunden, berater zuordnen <- need?
                }

                return 2;
            }

            return 1;
        }

        return 0;
    }

    public static function editSalesPointsVolume($data)
    {
        $user_sales_volume = UserSalesVolume::findOrFail($data['id']);
        if (! $user_sales_volume->isCurrentMonthYear()) {
            \Session()->flash('alert-error', 'Änderung muss im selben Monat sein');

            return;
        }
        $old_points = $user_sales_volume->points;
        $old_total_net = $user_sales_volume->total_net;
        $user_sales_volume->total_net = Util::reFormatNumber($data['total_net']);
        $user_sales_volume->points = Util::reFormatNumber($data['points']);

        $user_sales_volume->message = 'geändert: '.date('d.m.Y');
        $user_sales_volume->info = $data['info'];
        $user_sales_volume->status_points = $data['status_points'];
        $user_sales_volume->status_turnover = isset($data['status_turnover']) ? intval($data['status_turnover']) : null;

        $syslog = $user_sales_volume->syslog;
        $syslog[date('d.m.Y-h:i:s')] = 'edit points: #'.$old_points.' '.$user_sales_volume->points.' total: #'.$old_total_net.' '.$user_sales_volume->total_net;
        $user_sales_volume->syslog = $syslog;

        $user_sales_volume->save();

        self::reCalculateSalesPointsVolume($user_sales_volume->user_id, $user_sales_volume->month, $user_sales_volume->year);

        \Session()->flash('alert-success', 'Points geändert');
    }

    public static function addSalesPointsVolume($data)
    {

        if (! isset($data['user_id'])) {
            \Session()->flash('alert-error', 'Kein Berater ausgewählt');

            return;
        }
        $user = User::findOrFail($data['user_id']);
        $month = date('m');
        $year = date('Y');
        $date = date('d.m.Y');

        $total_net = isset($data['total_net']) ? Util::reFormatNumber($data['total_net']) : 0;
        $points = isset($data['points']) ? Util::reFormatNumber($data['points']) : 0;
        $syslog[date('d.m.Y-h:i:s')] = 'add points: #'.$points.' total: #'.$total_net;
        $status = isset($data['status']) ? intval($data['status']) : 4;
        $status_turnover = isset($data['status_turnover']) ? intval($data['status_turnover']) : null;

        $user_sales_volume = UserSalesVolume::create([
            'user_id' => $user->id,
            'shopping_order_id' => null,
            'month' => $month,
            'year' => $year,
            'date' => $date,
            'points' => $points,
            'status_points' => $data['status_points'],
            'status_turnover' => $status_turnover,
            'total_net' => $total_net,
            'message' => 'hinzugefügt: '.date('d.m.Y'),
            'info' => $data['info'],
            'syslog' => $syslog,
            'status' => $status,
        ]);

        self::reCalculateSalesPointsVolume($user_sales_volume->user_id, $user_sales_volume->month, $user_sales_volume->year);

        \Session()->flash('alert-success', 'Points hinzugefügt');
    }

    /**
     * Erstellt einen Storno-Eintrag für eine stornierte Rechnung
     * Negative Punkte werden dem aktuellen Monat zugeordnet
     *
     * @param  UserSalesVolume  $original_sales_volume  Der ursprüngliche Sales Volume Eintrag
     * @param  int  $cancellation_invoice_id  Die ID der Stornorechnung
     * @return UserSalesVolume
     */
    public static function cancelSalesPointsVolume(UserSalesVolume $original_sales_volume, $cancellation_invoice_id)
    {
        $month = date('m');
        $year = date('Y');
        $date = date('d.m.Y');

        $syslog = [
            date('d.m.Y H:i:s') => 'Stornorechnung erstellt - Punkte korrigiert (Original Invoice: #'.$original_sales_volume->user_invoice_id.')',
        ];

        // Negativen Eintrag erstellen (alle Werte negativ)
        $cancellation_sales_volume = UserSalesVolume::create([
            'user_id' => $original_sales_volume->user_id,
            'shopping_order_id' => $original_sales_volume->shopping_order_id,
            'user_invoice_id' => $cancellation_invoice_id,
            'month' => $month,
            'year' => $year,
            'date' => $date,
            'points' => -$original_sales_volume->points, // Negativ!
            'month_points' => 0, // Wird durch reCalculate gesetzt
            'month_KP_points' => 0,
            'month_TP_points' => 0,
            'month_shop_points' => 0,
            'total_net' => -$original_sales_volume->total_net, // Negativ!
            'month_total_net' => 0,
            'status' => 6, // Status 6 = cancelled/storniert
            'status_points' => $original_sales_volume->status_points,
            'status_turnover' => $original_sales_volume->status_turnover,
            'message' => 'Storniert am '.date('d.m.Y'),
            'info' => 'Storno für Invoice #'.$original_sales_volume->user_invoice_id,
            'syslog' => $syslog,
        ]);

        // Neuberechnung für aktuellen Monat
        self::reCalculateSalesPointsVolume($original_sales_volume->user_id, $month, $year);

        // Incentive: Track storno
        IncentiveTracker::trackStorno($original_sales_volume, $cancellation_sales_volume);

        \Log::info('Punktekorrektur für Stornorechnung durchgeführt', [
            'original_invoice_id' => $original_sales_volume->user_invoice_id,
            'cancellation_invoice_id' => $cancellation_invoice_id,
            'original_points' => $original_sales_volume->points,
            'cancellation_points' => $cancellation_sales_volume->points,
            'user_id' => $original_sales_volume->user_id,
            'month' => $month,
            'year' => $year,
        ]);

        return $cancellation_sales_volume;
    }
}