<?php

class WarehouseStocktakeItemController extends TTCrud {
    protected string $headerTitle = 'Inventur-Artikel';
    protected string $createText = 'Artikel hinzufügen';

    protected array $columns = [
        ['key' => 'articleId', 'text' => 'Artikel', 'required' => true,
         'modal' => ['type' => 'autocomplete', 'apiUrl' => '/WarehouseArticle/autocomplete'],
         'table' => ['priority' => 10]],
        ['key' => 'countedQuantity', 'text' => 'Menge', 'required' => true,
         'modal' => ['type' => 'number'],
         'table' => ['priority' => 9]],
        ['key' => 'rack', 'text' => 'Regal', 'required' => false,
         'modal' => ['type' => 'text'],
         'table' => ['priority' => 8]],
        ['key' => 'shelf', 'text' => 'Fach', 'required' => false,
         'modal' => ['type' => 'text'],
         'table' => ['priority' => 7]],
        ['key' => 'note', 'text' => 'Notiz', 'required' => false,
         'modal' => ['type' => 'textarea'],
         'table' => ['priority' => 6]],
        ['key' => 'scannedAt', 'text' => 'Gescannt am', 'required' => false,
         'modal' => false,
         'table' => ['priority' => 5]],
        ['key' => 'actions', 'text' => 'Aktionen', 'required' => false,
         'modal' => false,
         'table' => ['filter' => false, 'sortable' => false]],
    ];

    protected array $permissionCheck = ['WarehouseUser'];

    protected function formatRow($row) {
        // Format article
        if ($row['articleId']) {
            $article = WarehouseArticleModel::get($row['articleId']);
            $row['articleId'] = $article ? "[{$article->articleNumber}] {$article->title}" : 'Unbekannt';
        }

        // Format scannedAt
        if ($row['scannedAt']) {
            $row['scannedAt'] = date('d.m.Y H:i', $row['scannedAt']);
        } else {
            $row['scannedAt'] = '-';
        }

        return $row;
    }

    /**
     * Add item via scan (used by PWA)
     */
    protected function scanItemAction() {
        $stocktakeId = intval($this->request->stocktakeId);
        $articleId = intval($this->request->articleId);
        $quantity = floatval($this->request->quantity);
        $rack = $this->request->rack ?? null;
        $shelf = $this->request->shelf ?? null;
        $note = $this->request->note ?? null;

        if (!$stocktakeId || !$articleId) {
            self::returnJson(['success' => false, 'message' => 'Fehlende Parameter']);
            return;
        }

        // Verify stocktake exists and is in progress
        $stocktake = WarehouseStocktakeModel::get($stocktakeId);
        if (!$stocktake) {
            self::returnJson(['success' => false, 'message' => 'Inventur nicht gefunden']);
            return;
        }

        if ($stocktake->status !== 'in_progress') {
            self::returnJson(['success' => false, 'message' => 'Inventur ist nicht aktiv']);
            return;
        }

        // Verify article exists
        $article = WarehouseArticleModel::get($articleId);
        if (!$article) {
            self::returnJson(['success' => false, 'message' => 'Artikel nicht gefunden']);
            return;
        }

        // Check if this article was already scanned in this stocktake
        $existing = WarehouseStocktakeItemModel::getFirst([
            'stocktakeId' => $stocktakeId,
            'articleId' => $articleId
        ]);

        $db = FronkDB::singleton();

        if ($existing) {
            // Update existing entry - add to quantity
            $newQuantity = $existing->countedQuantity + $quantity;
            $db->query("UPDATE WarehouseStocktakeItem SET
                        countedQuantity = {$newQuantity},
                        rack = " . ($rack ? "'{$db->escape($rack)}'" : "rack") . ",
                        shelf = " . ($shelf ? "'{$db->escape($shelf)}'" : "shelf") . ",
                        scannedAt = " . time() . ",
                        scannedBy = {$this->me->id}
                        WHERE id = {$existing->id}");

            $itemId = $existing->id;
            $message = "Artikel aktualisiert: {$article->title} (Neue Menge: {$newQuantity})";
        } else {
            // Create new entry
            $db->query("INSERT INTO WarehouseStocktakeItem
                        (stocktakeId, articleId, countedQuantity, rack, shelf, note, scannedAt, scannedBy, createBy, `create`)
                        VALUES ({$stocktakeId}, {$articleId}, {$quantity},
                        " . ($rack ? "'{$db->escape($rack)}'" : "NULL") . ",
                        " . ($shelf ? "'{$db->escape($shelf)}'" : "NULL") . ",
                        " . ($note ? "'{$db->escape($note)}'" : "NULL") . ",
                        " . time() . ", {$this->me->id}, {$this->me->id}, " . time() . ")");

            $itemId = $db->insert_id;
            $message = "Artikel hinzugefügt: {$article->title} (Menge: {$quantity})";
        }

        // Update stocktake progress
        $stocktake->updateProgress();

        // Log the scan
        WarehouseStocktakeLogModel::log($stocktakeId, 'scanned', $itemId, [
            'articleId' => $articleId,
            'articleNumber' => $article->articleNumber,
            'articleTitle' => $article->title,
            'quantity' => $quantity,
            'rack' => $rack,
            'shelf' => $shelf,
        ]);

        self::returnJson([
            'success' => true,
            'message' => $message,
            'item' => [
                'id' => $itemId,
                'articleId' => $articleId,
                'articleNumber' => $article->articleNumber,
                'articleTitle' => $article->title,
                'countedQuantity' => $existing ? ($existing->countedQuantity + $quantity) : $quantity,
                'rack' => $rack,
                'shelf' => $shelf,
            ],
            'totalScanned' => $stocktake->totalScannedItems + 1,
        ]);
    }

    /**
     * Get article info by QR code or article number
     */
    protected function getArticleByCodeAction() {
        $code = $this->request->code;

        if (!$code) {
            self::returnJson(['success' => false, 'message' => 'Kein Code angegeben']);
            return;
        }

        // Try to parse QR code format: WA:articleId:articleNumber (Warehouse Article)
        // Also accept WH: for backwards compatibility
        $articleId = null;
        if (preg_match('/^(?:WA|WH):(\d+):/', $code, $matches)) {
            $articleId = intval($matches[1]);
        } else {
            // Try to find by article number
            $article = WarehouseArticleModel::getFirst(['articleNumber' => $code]);
            if ($article) {
                $articleId = $article->id;
            }
        }

        if (!$articleId) {
            self::returnJson(['success' => false, 'message' => 'Artikel nicht gefunden']);
            return;
        }

        $article = WarehouseArticleModel::get($articleId);
        if (!$article) {
            self::returnJson(['success' => false, 'message' => 'Artikel nicht gefunden']);
            return;
        }

        self::returnJson([
            'success' => true,
            'article' => [
                'id' => $article->id,
                'articleNumber' => $article->articleNumber,
                'title' => $article->title,
                'description' => $article->description ?? '',
                'unit' => $article->unit ?? 'Stk.',
            ]
        ]);
    }
}