<?php

class AssetManagementController extends TTCrud
{
    protected string $headerTitle = 'Anlagenverwaltung';
    protected string $singleText = 'Anlage';

    protected array $columns = [
        ['key' => 'id', 'text' => 'ID', 'modal' => false, 'table' => false],
        ['key' => 'name', 'text' => 'Gerät', 'required' => true, 'modal' => ['type' => 'text']],
        ['key' => 'assetNumber', 'text' => 'Kennzeichen / Nr.', 'required' => true, 'modal' => ['type' => 'text']],
        ['key' => 'currentUser', 'text' => 'Akt. Mitarbeiter', 'modal' => false, 'table' => ['sortable' => false]],
        ['key' => 'currentSite', 'text' => 'Akt. Baustelle', 'modal' => false, 'table' => ['sortable' => false]],
        ['key' => 'borrowDate', 'text' => 'Ausgeliehen seit', 'modal' => false, 'table' => ['sortable' => false]],
        ['key' => 'location', 'text' => 'Lagerort', 'required' => true, 'modal' => ['type' => 'text']],
        ['key' => 'serviceDueDate', 'text' => 'Service fällig', 'required' => false, 'modal' => ['type' => 'datepicker']],
        ['key' => 'journal', 'text' => 'Historie', 'modal' => false, 'table' => ['sortable' => false, 'filter' => false]],
        ['key' => 'actions', 'text' => 'Aktionen', 'modal' => false, 'table' => ['filter' => false, 'sortable' => false]],
    ];

    protected array $permissionCheck = ['WarehouseAdmin']; // Or a new permission

    protected function getAction()
    {
        $json = json_decode(file_get_contents('php://input'), true);
        $assets = AssetManagementModel::getAll([], $this->request->order);
        $assetIds = array_map(fn($asset) => $asset->id, $assets);

        if (empty($assetIds)) {
            self::returnJson(['rows' => [], 'pagination' => ['total_rows' => 0, 'total_pages' => 1, 'page' => 1, 'per_page' => 10, 'filtered_available' => 0]]);
            return;
        }

        // Get the latest open journal entry for each asset
        $journalEntries = AssetManagementJournalModel::getLatestOpenEntries($assetIds);
        $journalMap = [];
        foreach ($journalEntries as $entry) {
            // Only map it if it's not returned
            if ($entry->returnDate === null) {
                $journalMap[$entry->assetId] = $entry;
            }
        }

        $users = UserModel::search(['employee' => true]);
        $userMap = array_reduce($users, function ($carry, $user) {
            $carry[$user->id] = $user->name;
            return $carry;
        }, []);

        $rows = [];
        foreach ($assets as $asset) {
            $row = (array)$asset;
            $latestJournal = $journalMap[$asset->id] ?? null;

            $row['journalId'] = $latestJournal->id ?? null;
            $row['currentUser'] = $latestJournal ? ($userMap[$latestJournal->userId] ?? 'Unbekannt') : null;
            $row['currentUserId'] = $latestJournal->userId ?? null;
            $row['currentSite'] = $latestJournal->site ?? null;
            $row['borrowDate'] = $latestJournal->borrowDate ?? null;
            $rows[] = $row;
        }

        // Simple pagination/filtering after getting all data
        // For larger datasets, this should be done in the SQL query
        $totalRows = count($rows);
        $pagination = $json['pagination'] ?? ['page' => 1, 'per_page' => 10];
        $paginatedRows = array_slice($rows, ($pagination['page'] - 1) * $pagination['per_page'], $pagination['per_page']);

        self::returnJson([
            'rows' => $paginatedRows,
            'pagination' => [
                'page' => $pagination['page'],
                'per_page' => $pagination['per_page'],
                'total_rows' => $totalRows,
                'total_pages' => ceil($totalRows / $pagination['per_page'])
            ]
        ]);
    }

    protected function suggestAssetNumberAction()
    {
        $lastAsset = AssetManagementModel::getOne([], ['order' => 'DESC', 'key' => 'id']);
        if (!$lastAsset || !preg_match('/XI(\d+)/', $lastAsset->assetNumber, $matches)) {
            $nextNumber = 1;
        } else {
            $nextNumber = intval($matches[1]) + 1;
        }
        $newAssetNumber = 'XI' . str_pad($nextNumber, 3, '0', STR_PAD_LEFT);
        self::returnJson(['success' => true, 'assetNumber' => $newAssetNumber]);
    }

    protected function borrowAction()
    {
        $post = json_decode(file_get_contents('php://input'), true);
        if (empty($post['assetId']) || empty($post['userId']) || empty($post['site']) || empty($post['reason'])) {
            self::sendError("Alle Felder sind erforderlich.");
        }

        AssetManagementJournalModel::create([
            'assetId' => $post['assetId'],
            'userId' => $post['userId'],
            'site' => $post['site'],
            'borrowReason' => $post['reason'],
            'borrowDate' => time(),
            'createBy' => $this->user->id,
            'create' => time(),
        ]);

        self::returnJson(['success' => true, 'message' => 'Gerät erfolgreich ausgeliehen.']);
    }

    protected function returnAction()
    {
        $post = json_decode(file_get_contents('php://input'), true);
        if (empty($post['journalId'])) {
            self::sendError("Journal-Eintrag nicht gefunden.");
        }

        $journalEntry = AssetManagementJournalModel::get($post['journalId']);
        if (!$journalEntry) {
            self::sendError("Journal-Eintrag nicht gefunden.");
        }

        $journalEntry->returnDate = time();
        $journalEntry->returnReason = $post['reason'] ?? 'Zurückgegeben';
        AssetManagementJournalModel::update((array)$journalEntry);

        self::returnJson(['success' => true, 'message' => 'Gerät erfolgreich zurückgegeben.']);
    }

    protected function getJournalAction()
    {
        if (empty($this->request->assetId)) self::sendError("Asset ID fehlt.");
        $entries = AssetManagementJournalModel::getAll(['assetId' => $this->request->assetId], null, 0, ['key' => 'borrowDate', 'order' => 'DESC']);

        // Enhance with user names
        $users = UserModel::search(['employee' => true]);
        $userMap = array_reduce($users, function ($carry, $user) {
            $carry[$user->id] = $user->name;
            return $carry;
        }, []);

        foreach ($entries as $entry) {
            $entry->userName = $userMap[$entry->userId] ?? 'Unbekannt';
        }

        self::returnJson($entries);
    }
}