<?php

class WorkorderMphAdminController extends WorkorderMphBaseController
{
    protected string $headerTitle = 'MPH Arbeitsaufträge Verwaltung';
    protected bool $createText = false;
    protected array $permissionCheck = ['WorkorderMphAdmin'];

    protected array $columns = [
        ['key' => 'id', 'text' => 'Auftrags-Nr.', 'table' => ['sortable' => true, 'filter' => 'numberRange']],
        ['key' => 'hausnummerInfo', 'text' => 'Adresse', 'modal' => false, 'table' => ['filter' => 'search', 'sortable' => false]],
        ['key' => 'netzgebietName', 'text' => 'Netzgebiet', 'modal' => false, 'table' => ['filter' => 'search', 'sortable' => true]],
        ['key' => 'companyName', 'text' => 'Firma', 'modal' => false, 'table' => ['filter' => 'search', 'sortable' => true]],
        ['key' => 'wohneinheitCount', 'text' => 'WE', 'modal' => false, 'table' => ['sortable' => false]],
        ['key' => 'additionalInfo', 'text' => 'Notiz', 'modal' => false, 'table' => ['sortable' => true]],
        ['key' => 'deadlineDate', 'text' => 'Deadline', 'modal' => false, 'table' => ['filter' => 'date', 'sortable' => true]],
        ['key' => 'appointmentDate', 'text' => 'Termin', 'modal' => false, 'table' => ['filter' => 'date', 'sortable' => true]],
    ];

    protected function prepareCrudConfig()
    {
        $hausnummerInfoColIdx = array_search('hausnummerInfo', array_column($this->columns, 'key'));
        array_splice($this->columns, $hausnummerInfoColIdx + 1, 0, [$this->statusColumn]);
    }

    public function indexAction()
    {
        $this->createWorkordersFromHausnummer();
        parent::indexAction();
    }

    protected function getAction()
    {
        $pagination = $this->postData['pagination'] ?? ['page' => 1, 'per_page' => 10];
        $filters = $this->postData['filters'] ?? [];
        $order = $this->postData['order'] ?? [];

        $db = FronkDB::singleton();
        $fronkDbName = FRONKDB_DBNAME;
        $addressDbName = defined('ADDRESSDB_DBNAME') ? ADDRESSDB_DBNAME : 'addressdb';

        $whereClauses = "WHERE 1=1";

        if (empty($filters['status'])) {
            $whereClauses .= " AND w.status NOT IN ('completed', 'cancelled', 'archived')";
        } else {
            $whereClauses .= Helper::generateFilterCondition($filters['status'], 'w.status', true);
        }

        if (!empty($filters['id'])) $whereClauses .= Helper::generateFilterCondition($filters['id'], 'w.id', true);
        if (!empty($filters['hausnummerInfo'])) {
            $searchColumns = "str.name|hn.hausnummer|hn.stiege|plz.plz|ort.name|w.additionalInfo";
            $whereClauses .= Helper::generateFilterCondition($filters['hausnummerInfo'], $searchColumns);
        }
        if (!empty($filters['netzgebietName'])) $whereClauses .= Helper::generateFilterCondition($filters['netzgebietName'], 'ng.name');
        if (!empty($filters['companyName'])) $whereClauses .= Helper::generateFilterCondition($filters['companyName'], 'c.name');
        if (!empty($filters['deadlineDate'])) $whereClauses .= Helper::generateFilterCondition($filters['deadlineDate'], 'w.deadlineDate');
        if (!empty($filters['additionalInfo'])) $whereClauses .= Helper::generateFilterCondition($filters['additionalInfo'], 'w.additionalInfo');

        $sql = "
            SELECT
                w.id, w.status, w.deadlineDate, w.appointmentDate, w.companyId, w.additionalInfo,
                IFNULL(c.name, 'Nicht zugewiesen') as companyName,
                CONCAT_WS(' ', str.name, hn.hausnummer, hn.stiege) as hausnummerInfo,
                str.name as street, hn.hausnummer, hn.stiege, plz.plz, ort.name as city,
                IFNULL(ng.name, '-') as netzgebietName,
                (SELECT COUNT(*) FROM `$addressDbName`.`Wohneinheit` we WHERE we.hausnummer_id = hn.id) as wohneinheitCount
            FROM `$fronkDbName`.`WorkorderMph` w
            LEFT JOIN `$fronkDbName`.`WorkorderCompany` c ON w.companyId = c.id
            LEFT JOIN `$addressDbName`.`Hausnummer` hn ON w.hausnummerId = hn.id
            LEFT JOIN `$addressDbName`.`Strasse` str ON hn.strasse_id = str.id
            LEFT JOIN `$addressDbName`.`Plz` plz ON hn.plz_id = plz.id
            LEFT JOIN `$addressDbName`.`Ortschaft` ort ON hn.ortschaft_id = ort.id
            LEFT JOIN `$addressDbName`.`Netzgebiet` ng ON hn.netzgebiet_id = ng.id
            $whereClauses
        ";

        $orderBy = "";
        if (!empty($order['key'])) {
            $sortableColumns = ['id', 'status', 'deadlineDate', 'companyName', 'additionalInfo', 'appointmentDate', 'netzgebietName'];
            if (in_array($order['key'], $sortableColumns)) {
                $sortOrder = (strtoupper($order['order']) === 'DESC') ? 'DESC' : 'ASC';
                $orderBy = " ORDER BY " . $db->escape($order['key']) . " " . $sortOrder;
            }
        }
        if (empty($orderBy)) $orderBy = " ORDER BY CASE WHEN w.deadlineDate IS NULL THEN 1 ELSE 0 END, w.deadlineDate ASC";

        $sql .= $orderBy;

        // Get total count
        $countSql = "SELECT COUNT(*) as count FROM `$fronkDbName`.`WorkorderMph` w
                     LEFT JOIN `$fronkDbName`.`WorkorderCompany` c ON w.companyId = c.id
                     LEFT JOIN `$addressDbName`.`Hausnummer` hn ON w.hausnummerId = hn.id
                     LEFT JOIN `$addressDbName`.`Strasse` str ON hn.strasse_id = str.id
                     LEFT JOIN `$addressDbName`.`Plz` plz ON hn.plz_id = plz.id
                     LEFT JOIN `$addressDbName`.`Ortschaft` ort ON hn.ortschaft_id = ort.id
                     LEFT JOIN `$addressDbName`.`Netzgebiet` ng ON hn.netzgebiet_id = ng.id
                     $whereClauses";
        $totalCount = $db->query($countSql)->fetch_assoc()['count'];

        // Add pagination
        if ($pagination['per_page'] !== null) {
            $sql .= " LIMIT " . intval($pagination['per_page']) . " OFFSET " . intval(($pagination['page'] - 1) * $pagination['per_page']);
        }

        $result = $db->query($sql);
        $rows = $result ? $result->fetch_all(MYSQLI_ASSOC) : [];

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

    protected function getCompaniesAction()
    {
        $companies = WorkorderCompanyModel::getAll();
        self::returnJson(array_map(fn($c) => ['value' => $c->id, 'text' => $c->name], $companies));
    }

    protected function assignWorkorderAction()
    {
        if (empty($this->postData['workorderId']) || empty($this->postData['companyId'])) self::sendError("Erforderliche Felder fehlen.");
        $deadline = !empty($this->postData['deadlineDate']) ? $this->postData['deadlineDate'] : strtotime('+6 weeks');

        $workorder = WorkorderMphModel::get($this->postData['workorderId']);
        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");

        $oldStatus = $workorder->status;
        $oldCompanyId = $workorder->companyId;

        $workorder->companyId = $this->postData['companyId'];
        $workorder->status = 'assigned';
        $workorder->assignmentDate = time();
        $workorder->deadlineDate = $deadline;

        WorkorderMphModel::update((array)$workorder);

        $company = WorkorderCompanyModel::get($this->postData['companyId']);
        $statusChange = $this->getStatusText($oldStatus) . " -> " . $this->getStatusText('assigned');

        WorkorderMphJournalModel::create([
            'workorderMphId' => $workorder->id,
            'text' => "Arbeitsauftrag zugewiesen an: " . ($company ? $company->name : "Firma ID " . $this->postData['companyId']),
            'statusChange' => $statusChange,
            'create' => time(),
            'createBy' => $this->user->id,
        ]);

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

    protected function updateDeadlineAction()
    {
        if (empty($this->postData['workorderId']) || empty($this->postData['deadlineDate'])) self::sendError("Erforderliche Felder fehlen.");

        $workorder = WorkorderMphModel::get($this->postData['workorderId']);
        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");

        $workorder->deadlineDate = $this->postData['deadlineDate'];
        WorkorderMphModel::update((array)$workorder);
        WorkorderMphJournalModel::create([
            'workorderMphId' => $workorder->id,
            'text' => 'Deadline geändert auf ' . date('d.m.Y', $this->postData['deadlineDate']) . '.',
            'create' => time(),
            'createBy' => $this->user->id
        ]);
        self::returnJson(['success' => true, 'message' => 'Deadline erfolgreich aktualisiert.']);
    }

    protected function acceptDocumentationAction()
    {
        if (empty($this->postData['workorderId'])) self::sendError("Arbeitsauftrags-ID fehlt.");
        $workorder = WorkorderMphModel::get($this->postData['workorderId']);
        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");
        if ($workorder->status !== 'documented') self::sendError("Die Dokumentation muss zuerst von der Firma als fertig markiert werden.");

        $oldStatus = $workorder->status;
        $workorder->status = 'completed';
        WorkorderMphModel::update((array)$workorder);
        WorkorderMphJournalModel::create([
            'workorderMphId' => $workorder->id,
            'text' => 'Dokumentation akzeptiert und Arbeitsauftrag abgeschlossen.',
            'statusChange' => $this->getStatusText($oldStatus) . " -> " . $this->getStatusText('completed'),
            'create' => time(),
            'createBy' => $this->user->id,
        ]);
        self::returnJson(['success' => true, 'message' => 'Dokumentation akzeptiert und Arbeitsauftrag abgeschlossen.']);
    }

    /**
     * Background task: Creates WorkorderMph from Hausnummer with >2 Wohneinheiten
     * and RIMO state not in grossplaning/not2connect
     */
    private function createWorkordersFromHausnummer()
    {
        $lockFile = TEMP_DIR . "/task_create_workorder_mph.lock";
        if (file_exists($lockFile) && (time() - intval(file_get_contents($lockFile))) < 300) {
            return; // Run only every 5 minutes
        }

        $db = FronkDB::singleton(ADDRESSDB_DBHOST, ADDRESSDB_DBUSER, ADDRESSDB_DBPASS, ADDRESSDB_DBNAME);

        // Build netzgebiet filter
        $netzgebietIds = defined('TT_WORKORDER_MPH_NETZGEBIET_IDS') ? TT_WORKORDER_MPH_NETZGEBIET_IDS : [];
        $netzgebietFilter = '';
        if (!empty($netzgebietIds)) {
            $escapedIds = array_map(fn($id) => $db->escape($id), $netzgebietIds);
            $netzgebietFilter = " AND hn.netzgebiet_id IN (" . implode(',', $escapedIds) . ")";
        }

        // Find Hausnummer with >2 Wohneinheiten and state not in grossplaning/not2connect
        $sql = "
            SELECT hn.id, hn.netzgebiet_id, COUNT(we.id) as we_count
            FROM Hausnummer hn
            LEFT JOIN Wohneinheit we ON hn.id = we.hausnummer_id
            WHERE hn.rimo_ex_state NOT IN ('grossplaning', 'not2connect')
              AND hn.rimo_op_state NOT IN ('grossplaning', 'not2connect')
              $netzgebietFilter
            GROUP BY hn.id
            HAVING we_count > 2
        ";

        $result = $db->query($sql);
        $hausnummern = $result ? $result->fetch_all(MYSQLI_ASSOC) : [];

        // Get valid hausnummer IDs
        $validHausnummerIds = array_column($hausnummern, 'id');

        foreach ($hausnummern as $hn) {
            // Check if WorkorderMph already exists
            $existing = WorkorderMphModel::getFirst(['hausnummerId' => $hn['id']]);

            if (!$existing) {
                // Create new WorkorderMph
                WorkorderMphModel::create([
                    'hausnummerId' => $hn['id'],
                    'status' => 'new',
                    'create' => time(),
                    'createBy' => 1 // System user
                ]);
            } elseif ($existing->status === 'archived') {
                // Reactivate archived workorder
                $existing->status = 'new';
                $existing->companyId = null;
                $existing->deadlineDate = null;
                $existing->appointmentDate = null;
                WorkorderMphModel::update((array)$existing);

                WorkorderMphJournalModel::create([
                    'workorderMphId' => $existing->id,
                    'text' => 'Arbeitsauftrag wurde automatisch reaktiviert.',
                    'statusChange' => $this->getStatusText('archived') . " -> " . $this->getStatusText('new'),
                    'create' => time(),
                    'createBy' => 1,
                ]);
            }
        }

        // Archive workorders for Hausnummer that are no longer in allowed netzgebiete or don't meet criteria
        if (!empty($netzgebietIds)) {
            $allWorkorders = WorkorderMphModel::getAll(['status' => ['new', 'assigned', 'scheduled', 'in_progress']]);
            foreach ($allWorkorders as $workorder) {
                if (!in_array($workorder->hausnummerId, $validHausnummerIds)) {
                    $workorder->status = 'archived';
                    WorkorderMphModel::update((array)$workorder);

                    WorkorderMphJournalModel::create([
                        'workorderMphId' => $workorder->id,
                        'text' => 'Arbeitsauftrag automatisch archiviert (Netzgebiet deaktiviert oder Kriterien nicht mehr erfüllt).',
                        'statusChange' => 'active -> archived',
                        'create' => time(),
                        'createBy' => 1,
                    ]);
                }
            }
        }

        file_put_contents($lockFile, time());
    }

    protected function cancelWorkorderAction()
    {
        if (empty($this->postData['workorderId'])) self::sendError("Arbeitsauftrags-ID fehlt.");

        $workorder = WorkorderMphModel::get($this->postData['workorderId']);
        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");

        $oldStatus = $workorder->status;
        $workorder->status = 'cancelled';
        WorkorderMphModel::update((array)$workorder);

        $reason = !empty($this->postData['reason']) ? $this->postData['reason'] : 'Kein Grund angegeben';

        WorkorderMphJournalModel::create([
            'workorderMphId' => $workorder->id,
            'text' => "Arbeitsauftrag storniert. Grund: " . $reason,
            'statusChange' => $this->getStatusText($oldStatus) . " -> " . $this->getStatusText('cancelled'),
            'create' => time(),
            'createBy' => $this->user->id,
        ]);

        self::returnJson(['success' => true, 'message' => 'Arbeitsauftrag wurde storniert.']);
    }
}