<?php

class WarehouseArticleController extends TTCrud {
    protected string $headerTitle = 'Artikel';
    protected string $createText = 'Artikel erstellen';

    // @formatter:off
    protected array $columns = [
        ['key' => 'title', 'text' => 'Titel', 'required' => true, 'table' => ['priority' => 9]],
        ['key' => 'description', 'text' => 'Beschreibung', 'required' => true],
        ['key' => 'category', 'text' => 'Kategorie', 'required' => true],
        ['key' => 'unit', 'text' => 'Einheit', 'required' => true,'table' => false], // Boolean value
        ['key' => 'revenueAccount', 'text' => 'Erlöskonto', 'required' => true,'modal' =>
            ['type' => 'select', 'items' => [['value' => 0, 'text' => 'Dienstleistungen'], ['value' => 1, 'text' => 'Handelswaren']]
        ], 'table' => false], // Boolean value
        ['key' => 'cheapestPurchasePrice', 'text' => 'Einkauf', 'modal' => false, 'table' => ['class' => 'text-center', 'suffix' => ' €']],
        ['key' => 'cheapestSellPrice', 'text' => 'Verkauf', 'modal' => false, 'table' => ['class' => 'text-center', 'suffix' => ' €']],
        ['key' => 'warningAmount', 'text' => 'Warnmenge', 'required' => true,'modal' => ['type' => 'number'], 'table' => ['class' => 'text-center']], // Stock/inventory related
        ['key' => 'criticalAmount', 'text' => 'Kritische Menge', 'required' => true,'modal' => ['type' => 'number'], 'table' => ['class' => 'text-center']], // Stock/inventory related
        ['key' => 'isSerialDocumentation', 'text' => 'Seriennummern', 'required' => true,'modal' => ['type' => 'checkbox'], 'table' => false], // Boolean value
        ['key' => 'isEShop', 'text' => 'Ist E-Shop', 'required' => true,'modal' => ['type' => 'checkbox'], 'table' => false], // Boolean value
        ['key' => 'isEShopHide', 'text' => 'E-Shop Versteckt', 'required' => true,'modal' => ['type' => 'checkbox'], 'table' => false], // Boolean value
        ['key' => 'actions', 'text' => 'Aktionen', 'required' => false, 'modal' => false, 'table' => ['filter' => false, 'sortable' => false, 'class' => 'text-center', 'priority' => 8]]
    ];

    protected array $additionalActions = [
        ['key' => 'openHistory','title' => 'Historie','class' => 'fas fa-history text-secondary'],
        ['key' => 'editDistributorEntries','title' => 'Lieferanten','class' => 'fas fa-truck text-cyan'],
        ['key' => 'editThresholdEntries','title' => 'Schwellenwerte','class' => 'far fa-fw fa-box-full text-orange'],
        ['key' => 'editPricesEntries','title' => 'Preise','class' => 'fas fa-euro-sign text-green'],
        ['key' => 'addToCart','title' => 'Zur Bestellung hinzufügen','class' => 'fas fa-shopping-cart text-primary'],
    ];
    // @formatter:on

    protected array $infoMessages = ['create' => 'Artikel wurde erstellt',
                                     'update' => 'Artikel wurde aktualisiert',
                                     'delete' => 'Artikel wurde gelöscht',
                                     'noChanges' => 'Keine Änderungen',];

    protected function beforeUpdate($postData): bool {
        (new WarehouseHistoryController)->create($postData, $this->mod);
        return true;
    }

    protected function afterUpdate($postData) {
        self::updateCheapestPurchasePrice($postData['id']);
    }

    /**
     * Updates the cheapest purchase price for a given article from WarehouseArticleDistributorModel prices.
     *
     * @param int $articleId The ID of the article to update.
     * @return void
     * @throws Exception If the article is not an instance of WarehouseArticleModel.
     */
    public static function updateCheapestPurchasePrice(int $articleId): void {
        $article = WarehouseArticleModel::get($articleId);

        if (!$article instanceof WarehouseArticleModel) {
            throw new Exception("Article is not an instance of WarehouseArticleModel");
        }

        $order = ['key' => 'purchasePrice', 'order' => 'ASC'];
        $cheapestDistributorEntry = WarehouseArticleDistributorModel::getAll(['articleId' => $articleId], 1, 0, $order);

        if (empty($cheapestDistributorEntry)) return;

        $cheapestPurchasePrice = $cheapestDistributorEntry[0]->purchasePrice;
        if ($article->cheapestPurchasePrice == $cheapestPurchasePrice) return;
        WarehouseArticleModel::update(array_merge(get_object_vars($article), ['cheapestPurchasePrice' => $cheapestPurchasePrice]));
    }

    protected function afterCreate($postData) {
        self::updateCheapestPurchasePrice($postData['id']);
        self::updateSellPrices($postData['id']);
    }

    /**
     * Updates the sell prices for a given article.
     *
     * @param int $articleId The ID of the article to update.
     * @return void
     * @throws Exception If the article is not an instance of WarehouseArticleModel.
     */
    public static function updateSellPrices(int $articleId) {
        $article = WarehouseArticleModel::get($articleId);
        if (!$article instanceof WarehouseArticleModel) {
            throw new Exception("Article is not an instance of WarehouseArticleModel");
        }

        $priceTypes = WarehouseArticlePriceTypeModel::getAll();
        $articlePriceTypes = WarehouseArticlePriceModel::getAll(['articleId' => $articleId]);

        $cheapestSellPrices = [];
        // Calculate sell prices for each price type, use default sell multiplier if no specific price is set
        foreach ($priceTypes as $priceType) {
            $articlePriceType = null;
            foreach ($articlePriceTypes as $apt) {
                if ($apt->articlePriceTypeId == $priceType->id) {
                    $articlePriceType = $apt;
                    break;
                }
            }

            $sellPrice = $priceType->defaultPriceFactor * $article->cheapestPurchasePrice;
            if ($articlePriceType !== null) {
                $sellPrice = $articlePriceType->priceOverride ?: $articlePriceType->priceMultiplier * $article->cheapestPurchasePrice;
            }
            $cheapestSellPrices[$priceType->id] = ['title' => $priceType->title, 'price' => round($sellPrice, 2)];
        }

        $article->cheapestSellPrice = json_encode($cheapestSellPrices);
        WarehouseArticleModel::update(get_object_vars($article));
    }

    public function updatePricesAction() {
        foreach (WarehouseArticleModel::getAll() as $article) {
            self::updateCheapestPurchasePrice($article->id);
            self::updateSellPrices($article->id);
        }
        self::returnJson(['success' => true, 'message' => 'Preise wurden aktualisiert']);
    }

    protected function getHistoryAction() {
        self::returnJson((new WarehouseHistoryController)->getHistory($this->request->id, $this->mod, $this->columns));
    }

    protected function importAction() {
        error_reporting(E_ALL);
        ini_set('display_errors', 1);
        // read import.json from directory of this file
        $json = fopen(dirname(__FILE__) . '/import.json', 'r') or die('Unable to open file!');

        // read file content
        $data = fread($json, filesize(dirname(__FILE__) . '/import.json'));

        // decode json
        $data = json_decode($data, true);

        // close file
        fclose($json);

        // die with data length
        // loop through data
        echo 'Importing ' . count($data) . ' items' . PHP_EOL;
        $count = 0;
        foreach ($data as $item) {
            // echo count + 1
            echo ++$count . PHP_EOL;
            // Check if Distributor exists
            $distributor = WarehouseDistributorModel::getAll(['name' => $item['Lieferant']]);
            if (empty($distributor)) {
                $distributorId = WarehouseDistributorModel::create(['name' => $item['Lieferant'],
                                                                    'address' => 'Missing',
                                                                    'plz' => 'Missing',
                                                                    'city' => 'Missing',
                                                                    'countryId' => 1,
                                                                    'email' => 'Missing',
                                                                    'phone' => 'Missing',
                                                                    'contactPerson' => 'Missing',]);
            } else {
                $distributorId = $distributor[0]->id;
            }

            // only continue if PRODUKT 1.ZEILE and PRODUKT 2.ZEILE and ARTIKEL GRUPPE and VK and EK and Lieferant/ Hersteller Artikelnr: are set
            if (!isset($item['PRODUKT 1.ZEILE'])) {
                echo 'Missing data for ' . $item['PRODUKT 1.ZEILE'] . PHP_EOL;
                continue;
            }

            if (empty($item['VK'])) {
                $item['VK'] = 0;
                $calcSellPriceMultiplier = 0;
            } else {
                $item['VK'] = floatval(str_replace(',', '', $item['VK']));
            }

            if (empty($item['EK'])) {
                $item['EK'] = 0;
                $calcSellPriceMultiplier = 0;
                $purchasePrice = 0;
            } else {
                $item['EK'] = floatval(str_replace(',', '', $item['EK']));
            }

            if (!empty($item['VK']) && !empty($item['EK'])) {
                $calcSellPriceMultiplier = $item['VK'] / $item['EK'];

                // if calcSellPriceMultiplier has more than 2 decimal places assign $calcSellPriceOverride
                echo strlen(substr(strrchr($calcSellPriceMultiplier, "."), 1)) . PHP_EOL;
                if (strlen(substr(strrchr($calcSellPriceMultiplier, "."), 1)) > 2) {
                    $calcSellPriceOverride = $item['VK'];
                }

                $purchasePrice = str_replace(',', '', $item['EK']);
            }

            if (!isset($calcSellPriceMultiplier) && !isset($calcSellPriceOverride) || !isset($purchasePrice)) {
                echo 'Missing data for ' . $item['PRODUKT 1.ZEILE'] . PHP_EOL;
                continue;
            }


            // Check if Article exists
            $article = WarehouseArticleModel::getAll(['title' => ['exact' => $item['PRODUKT 1.ZEILE']]]);
            if (empty($article)) {
                $articleCreateData = ['title' => $item['PRODUKT 1.ZEILE'],
                                      'description' => $item['PRODUKT 2. ZEILE'],
                                      'category' => $item['ARTIKEL GRUPPE'],
                                      'cheapestPurchasePrice' => 0,
                                      'warningAmount' => 25,
                                      'criticalAmount' => 10,
                                      'isEShop' => 0,];

                // if calcSellPriceOverride is set, add it to the $articleCreateData array
                if (isset($calcSellPriceOverride)) {
                    $articleCreateData['sellPriceOverride'] = $calcSellPriceOverride;
                } else if (isset($calcSellPriceMultiplier)) {
                    $articleCreateData['sellPriceMultiplier'] = $calcSellPriceMultiplier;
                }

                $articleId = WarehouseArticleModel::create($articleCreateData);
            } else {
                echo 'Article already exists with title ' . $item['PRODUKT 1.ZEILE'] . PHP_EOL;
                $articleId = $article[0]->id;
            }

            // Check if ArticleDistributor exists
            $articleDistributor = WarehouseArticleDistributorModel::getAll(['articleId' => $articleId,
                                                                            'distributorId' => $distributorId]);
            if (empty($articleDistributor)) {
                WarehouseArticleDistributorModel::create(['articleId' => $articleId,
                                                          'distributorId' => $distributorId,
                                                          'purchasePrice' => $purchasePrice,
                                                          'externalArticleNumber' => $item['Lieferant/ Hersteller Artikelnr:'],]);
            }

        }
    }

    protected function prepareOrderAction() {
        // inside post json it will look like
        // [
        //    {
        //        "amount": "5",
        //        "itemId": 441,
        //        "title": "RT-FB-7590AX"
        //    },
        //    {
        //        "amount": "5",
        //        "itemId": 421,
        //        "title": "RT-FB-7590"
        //    }
        //]
        // get the json from the post request
        // then create a array containing each order we need to make, so search through WarehouseArticleDistributorModel to get the distributorId and purchasePrice (use lowest purchasePrice)
        // then get the WarehouseDistributorModel and then create a summary of the orders we need to make for each distributor

        $postData = json_decode(file_get_contents('php://input'), true);
        $orders = [];
        foreach ($postData as $order) {
            $articleDistributors = WarehouseArticleDistributorModel::getAll(['articleId' => $order['itemId']]);
            $cheapestArticleDistributor = $articleDistributors[0];
            foreach ($articleDistributors as $articleDistributor) {
                if ($articleDistributor->purchasePrice < $cheapestArticleDistributor->purchasePrice) {
                    $cheapestArticleDistributor = $articleDistributor;
                }
            }
            $distributor = WarehouseDistributorModel::get($cheapestArticleDistributor->distributorId);

            if (!isset($orders[$distributor->id])) {
                $orders[$distributor->id] = ['distributor' => array($distributor),
                                             'orderAmount' => 0,
                                             'orders' => []];
            }

            $orders[$distributor->id]['orders'][] = ['articleId' => $order['itemId'],
                                                     'amount' => $order['amount'],
                                                     'sum' => $order['amount'] * $cheapestArticleDistributor->purchasePrice,
                                                     'purchasePrice' => $cheapestArticleDistributor->purchasePrice,
                                                     'externalArticleNumber' => $cheapestArticleDistributor->externalArticleNumber,
                                                     'title' => $order['title'],];
            $orders[$distributor->id]['orderAmount'] += $order['amount'] * $cheapestArticleDistributor->purchasePrice;
        }

        self::returnJson($orders);
    }
}