<?php
namespace admin\Controllers;

use Domain\PaymentMethod\PaymentMethodRepository;
use Domain\Integrations\IntegrationsRepository;
use admin\ViewModels\Common\PaginatedTableViewModel;
use admin\ViewModels\Forms\FormAction;
use admin\ViewModels\Forms\FormEditViewModel;
use admin\ViewModels\Forms\FormField;
use admin\ViewModels\Forms\FormTab;

class ShopPaymentMethodController
{
    private PaymentMethodRepository $repository;

    public function __construct(PaymentMethodRepository $repository)
    {
        $this->repository = $repository;
    }

    public function list(): string
    {
        $sortableColumns = ['id', 'name', 'status', 'apilo_payment_type_id'];
        $filterDefinitions = [
            [
                'key' => 'name',
                'label' => 'Nazwa',
                'type' => 'text',
            ],
            [
                'key' => 'status',
                'label' => 'Aktywny',
                'type' => 'select',
                'options' => [
                    '' => '- aktywny -',
                    '1' => 'tak',
                    '0' => 'nie',
                ],
            ],
        ];

        $listRequest = \admin\Support\TableListRequestFactory::fromRequest(
            $filterDefinitions,
            $sortableColumns,
            'id'
        );

        $sortDir = $listRequest['sortDir'];
        if (trim((string)\Shared\Helpers\Helpers::get('sort')) === '') {
            $sortDir = 'ASC';
        }

        $result = $this->repository->listForAdmin(
            $listRequest['filters'],
            $listRequest['sortColumn'],
            $sortDir,
            $listRequest['page'],
            $listRequest['perPage']
        );

        $apiloPaymentTypes = $this->getApiloPaymentTypes();

        $rows = [];
        $lp = ($listRequest['page'] - 1) * $listRequest['perPage'] + 1;
        foreach ($result['items'] as $item) {
            $id = (int)($item['id'] ?? 0);
            $name = trim((string)($item['name'] ?? ''));
            $status = (int)($item['status'] ?? 0);
            $apiloPaymentTypeId = $item['apilo_payment_type_id'] ?? null;

            $apiloLabel = '-';
            if ($apiloPaymentTypeId !== null) {
                $apiloKey = (string)$apiloPaymentTypeId;
                if (isset($apiloPaymentTypes[$apiloKey])) {
                    $apiloLabel = $apiloPaymentTypes[$apiloKey];
                }
            }

            $rows[] = [
                'lp' => $lp++ . '.',
                'name' => '<a href="/admin/shop_payment_method/edit/id=' . $id . '">' . htmlspecialchars($name, ENT_QUOTES, 'UTF-8') . '</a>',
                'status' => $status === 1 ? 'tak' : '<span style="color: #FF0000;">nie</span>',
                'apilo_payment_type' => htmlspecialchars((string)$apiloLabel, ENT_QUOTES, 'UTF-8'),
                '_actions' => [
                    [
                        'label' => 'Edytuj',
                        'url' => '/admin/shop_payment_method/edit/id=' . $id,
                        'class' => 'btn btn-xs btn-primary',
                    ],
                ],
            ];
        }

        $total = (int)$result['total'];
        $totalPages = max(1, (int)ceil($total / $listRequest['perPage']));

        $viewModel = new PaginatedTableViewModel(
            [
                ['key' => 'lp', 'label' => 'Lp.', 'class' => 'text-center', 'sortable' => false],
                ['key' => 'name', 'sort_key' => 'name', 'label' => 'Nazwa', 'sortable' => true, 'raw' => true],
                ['key' => 'status', 'sort_key' => 'status', 'label' => 'Aktywny', 'class' => 'text-center', 'sortable' => true, 'raw' => true],
                ['key' => 'apilo_payment_type', 'sort_key' => 'apilo_payment_type_id', 'label' => 'Typ platnosci Apilo', 'class' => 'text-center', 'sortable' => true],
            ],
            $rows,
            $listRequest['viewFilters'],
            [
                'column' => $listRequest['sortColumn'],
                'dir' => $sortDir,
            ],
            [
                'page' => $listRequest['page'],
                'per_page' => $listRequest['perPage'],
                'total' => $total,
                'total_pages' => $totalPages,
            ],
            array_merge($listRequest['queryFilters'], [
                'sort' => $listRequest['sortColumn'],
                'dir' => $sortDir,
                'per_page' => $listRequest['perPage'],
            ]),
            $listRequest['perPageOptions'],
            $sortableColumns,
            '/admin/shop_payment_method/list/',
            'Brak danych w tabeli.'
        );

        return \Shared\Tpl\Tpl::view('shop-payment-method/payment-methods-list', [
            'viewModel' => $viewModel,
        ]);
    }

    public function edit(): string
    {
        $paymentMethod = $this->repository->find((int)\Shared\Helpers\Helpers::get('id'));
        if ($paymentMethod === null) {
            \Shared\Helpers\Helpers::alert('Metoda platnosci nie zostala znaleziona.');
            header('Location: /admin/shop_payment_method/list/');
            exit;
        }

        return \Shared\Tpl\Tpl::view('shop-payment-method/payment-method-edit', [
            'form' => $this->buildFormViewModel($paymentMethod, $this->getApiloPaymentTypes()),
        ]);
    }

    public function save(): void
    {
        $payload = $_POST;
        $paymentMethodId = isset($payload['id']) && $payload['id'] !== ''
            ? (int)$payload['id']
            : (int)\Shared\Helpers\Helpers::get('id');

        $id = $this->repository->save($paymentMethodId, $payload);
        if ($id !== null) {
            echo json_encode([
                'success' => true,
                'id' => (int)$id,
                'message' => 'Metoda platnosci zostala zapisana.',
            ]);
            exit;
        }

        echo json_encode([
            'success' => false,
            'errors' => ['general' => 'Podczas zapisywania metody platnosci wystapil blad.'],
        ]);
        exit;
    }

    private function buildFormViewModel(array $paymentMethod, array $apiloPaymentTypes): FormEditViewModel
    {
        $id = (int)($paymentMethod['id'] ?? 0);
        $name = (string)($paymentMethod['name'] ?? '');

        $apiloOptions = ['' => '--- wybierz typ platnosci apilo.com ---'];
        foreach ($apiloPaymentTypes as $apiloId => $apiloName) {
            $apiloOptions[(string)$apiloId] = $apiloName;
        }

        $data = [
            'id' => $id,
            'description' => (string)($paymentMethod['description'] ?? ''),
            'status' => (int)($paymentMethod['status'] ?? 0),
            'apilo_payment_type_id' => $paymentMethod['apilo_payment_type_id'] ?? '',
            'min_order_amount' => $paymentMethod['min_order_amount'] ?? '',
            'max_order_amount' => $paymentMethod['max_order_amount'] ?? '',
            'is_cod' => (int)($paymentMethod['is_cod'] ?? 0),
        ];

        $fields = [
            FormField::hidden('id', $id),
            FormField::custom(
                'name_preview',
                \Shared\Html\Html::input([
                    'label' => 'Nazwa',
                    'name' => 'name_preview',
                    'id' => 'name_preview',
                    'value' => $name,
                    'type' => 'text',
                    'readonly' => true,
                ]),
                ['tab' => 'settings']
            ),
            FormField::textarea('description', [
                'label' => 'Opis',
                'tab' => 'settings',
                'rows' => 5,
            ]),
            FormField::number('min_order_amount', [
                'label' => 'Min. kwota zamowienia (PLN)',
                'tab' => 'settings',
                'step' => 0.01,
            ]),
            FormField::number('max_order_amount', [
                'label' => 'Maks. kwota zamowienia (PLN)',
                'tab' => 'settings',
                'step' => 0.01,
            ]),
            FormField::select('apilo_payment_type_id', [
                'label' => 'Typ platnosci Apilo',
                'tab' => 'settings',
                'options' => $apiloOptions,
            ]),
            FormField::switch('is_cod', [
                'label' => 'Platnosc przy odbiorze',
                'tab' => 'settings',
            ]),
            FormField::switch('status', [
                'label' => 'Aktywny',
                'tab' => 'settings',
            ]),
        ];

        $tabs = [
            new FormTab('settings', 'Ustawienia', 'fa-wrench'),
        ];

        $actionUrl = '/admin/shop_payment_method/save/id=' . $id;
        $actions = [
            FormAction::save($actionUrl, '/admin/shop_payment_method/list/'),
            FormAction::cancel('/admin/shop_payment_method/list/'),
        ];

        return new FormEditViewModel(
            'shop-payment-method-edit',
            'Edycja metody platnosci: ' . $name,
            $data,
            $fields,
            $tabs,
            $actions,
            'POST',
            $actionUrl,
            '/admin/shop_payment_method/list/',
            true,
            ['id' => $id]
        );
    }

    private function getApiloPaymentTypes(): array
    {
        global $mdb;

        $integrationsRepository = new IntegrationsRepository( $mdb );
        $rawSetting = $integrationsRepository -> getSetting( 'apilo', 'payment-types-list' );
        $raw = null;

        if (is_array($rawSetting)) {
            $raw = $rawSetting;
        } elseif (is_string($rawSetting)) {
            $decoded = @unserialize($rawSetting);
            if (is_array($decoded)) {
                $raw = $decoded;
            } else {
                $decodedJson = json_decode($rawSetting, true);
                if (is_array($decodedJson)) {
                    $raw = $decodedJson;
                }
            }
        }

        if (!is_array($raw)) {
            return [];
        }

        if (isset($raw['message']) && isset($raw['code'])) {
            return [];
        }

        if (isset($raw['items']) && is_array($raw['items'])) {
            $raw = $raw['items'];
        } elseif (isset($raw['data']) && is_array($raw['data'])) {
            $raw = $raw['data'];
        }

        $list = [];
        foreach ($raw as $key => $paymentType) {
            if (is_array($paymentType)) {
                if (isset($paymentType['id'], $paymentType['name'])) {
                    $list[(string)$paymentType['id']] = (string)$paymentType['name'];
                    continue;
                }
            } elseif (is_scalar($paymentType)) {
                if (is_int($key) || (is_string($key) && preg_match('/^-?\d+$/', $key) === 1)) {
                    $list[(string)$key] = (string)$paymentType;
                }
            }
        }

        return $list;
    }
}