<?php
namespace App\Models\OrderTest;

use App\Models\BaseModel;

class OrderTestModel extends BaseModel {
    protected $table = 'ordertest';
    protected $primaryKey = 'InternalOID';
    protected $useAutoIncrement = true;
    protected $allowedFields = [
        'InternalOID',
        'OrderID',
        'PlacerID',
        'InternalPID',
        'SiteID',
        'PVADTID',
        'ReqApp',
        'Priority',
        'TrnDate',
        'EffDate',
        'CreateDate',
        'EndDate',
        'ArchiveDate',
        'DelDate'
    ];

    public function generateOrderID(string $siteCode = '00'): string {
        $date = new \DateTime();
        $year = $date->format('y');
        $month = $date->format('m');
        $day = $date->format('d');

        $counter = $this->db->table('counter')
            ->where('CounterName', 'ORDER')
            ->get()
            ->getRow();

        if (!$counter) {
            $this->db->table('counter')->insert([
                'CounterName' => 'ORDER',
                'CounterValue' => 1
            ]);
            $seq = 1;
        } else {
            $seq = $counter->CounterValue + 1;
            $this->db->table('counter')
                ->where('CounterName', 'ORDER')
                ->update(['CounterValue' => $seq]);
        }

        $seqStr = str_pad($seq, 5, '0', STR_PAD_LEFT);
        return $siteCode . $year . $month . $day . $seqStr;
    }

    public function createOrder(array $data): string {
        $orderID = $data['OrderID'] ?? $this->generateOrderID($data['SiteCode'] ?? '00');

        $orderData = [
            'OrderID' => $orderID,
            'PlacerID' => $data['PlacerID'] ?? null,
            'InternalPID' => $data['InternalPID'],
            'SiteID' => $data['SiteID'] ?? '1',
            'PVADTID' => $data['PatVisitID'] ?? $data['PVADTID'] ?? 0,
            'ReqApp' => $data['ReqApp'] ?? null,
            'Priority' => $data['Priority'] ?? 'R',
            'TrnDate' => $data['OrderDateTime'] ?? $data['TrnDate'] ?? date('Y-m-d H:i:s'),
            'EffDate' => $data['EffDate'] ?? date('Y-m-d H:i:s'),
            'CreateDate' => date('Y-m-d H:i:s')
        ];

        $internalOID = $this->insert($orderData);

        // Handle Order Comments
        if (!empty($data['Comment'])) {
            $this->db->table('ordercom')->insert([
                'InternalOID' => $internalOID,
                'Comment' => $data['Comment'],
                'CreateDate' => date('Y-m-d H:i:s')
            ]);
        }
        
        // Process Tests Expansion
        if (isset($data['Tests']) && is_array($data['Tests'])) {
            $testToOrder = [];
            $testModel = new \App\Models\Test\TestDefSiteModel();
            $grpModel = new \App\Models\Test\TestDefGrpModel();
            $calModel = new \App\Models\Test\TestDefCalModel();
            
            foreach ($data['Tests'] as $test) {
                $testSiteID = $test['TestSiteID'] ?? $test['TestID'] ?? null;
                if ($testSiteID) {
                    $this->expandTest($testSiteID, $testToOrder, $testModel, $grpModel, $calModel);
                }
            }
            
            // Insert unique tests into patres
            if (!empty($testToOrder)) {
                $resModel = new \App\Models\PatResultModel();
                foreach ($testToOrder as $tid => $tinfo) {
                    $resModel->insert([
                        'OrderID' => $internalOID,
                        'TestSiteID' => $tid,
                        'TestSiteCode' => $tinfo['TestSiteCode'],
                        'SID' => $orderID, 
                        'SampleID' => $orderID,
                        'ResultDateTime' => $orderData['TrnDate'],
                        'CreateDate' => date('Y-m-d H:i:s')
                    ]);
                }
            }
        }
        
        return $orderID;
    }

    private function expandTest($testSiteID, &$testToOrder, $testModel, $grpModel, $calModel) {
        if (isset($testToOrder[$testSiteID])) return;

        $testInfo = $testModel->find($testSiteID);
        if (!$testInfo) return;

        $testToOrder[$testSiteID] = [
            'TestSiteCode' => $testInfo['TestSiteCode'],
            'TestType' => $testInfo['TestType']
        ];

        // Handle Group Expansion
        if ($testInfo['TestType'] === 'GROUP') {
            $members = $grpModel->where('TestSiteID', $testSiteID)->findAll();
            foreach ($members as $m) {
                $this->expandTest($m['Member'], $testToOrder, $testModel, $grpModel, $calModel);
            }
        }

        // Handle Calculated Test Dependencies
        if ($testInfo['TestType'] === 'CALC') {
            $calDetail = $calModel->where('TestSiteID', $testSiteID)->first();
            if ($calDetail && !empty($calDetail['FormulaInput'])) {
                $inputs = explode(',', $calDetail['FormulaInput']);
                foreach ($inputs as $inputCode) {
                    $inputCode = trim($inputCode);
                    $inputTest = $testModel->where('TestSiteCode', $inputCode)->first();
                    if ($inputTest) {
                        $this->expandTest($inputTest['TestSiteID'], $testToOrder, $testModel, $grpModel, $calModel);
                    }
                }
            }
        }
    }

    public function getOrder(string $orderID): ?array {
        return $this->select('*')
            ->where('OrderID', $orderID)
            ->where('DelDate', null)
            ->get()
            ->getRowArray();
    }

    public function getOrdersByPatient(int $internalPID): array {
        return $this->select('*')
            ->where('InternalPID', $internalPID)
            ->where('DelDate', null)
            ->orderBy('TrnDate', 'DESC')
            ->get()
            ->getResultArray();
    }

    public function updateStatus(string $orderID, string $status): bool {
        $order = $this->getOrder($orderID);
        if (!$order) return false;

        return (bool)$this->db->table('orderstatus')->insert([
            'InternalOID' => $order['InternalOID'],
            'OrderStatus' => $status,
            'CreateDate' => date('Y-m-d H:i:s')
        ]);
    }

    public function softDelete(string $orderID): bool {
        return $this->where('OrderID', $orderID)->update(null, ['DelDate' => date('Y-m-d H:i:s')]);
    }
}