<?php

use App\Models\CalibrationLog;
use App\Models\WeldingEquipment;
use Illuminate\Support\Carbon;

if (!function_exists('syncCalibrationFromWeldingEquipment')) {
    /**
     * Sync a single WeldingEquipment record into CalibrationLog table.
     *
     * This allows NAKS Welding Equipments to automatically appear in the
     * QA -> Calibration Log module while still allowing manual entries.
     *
     * @param \App\Models\WeldingEquipment|array $equipment
     * @return \App\Models\CalibrationLog
     */
    function syncCalibrationFromWeldingEquipment($equipment): CalibrationLog
    {
        if (is_array($equipment)) {
            $data = $equipment;
        } else {
            $data = $equipment->toArray();
        }

        $sourceId = $data['id'] ?? null;
        
        \Log::debug("Sync attempt for equipment ID: " . $sourceId);

        $log = CalibrationLog::firstOrNew([
            'source_module' => 'naks_welding_equipment',
            'source_id' => $sourceId,
        ]);
        
        \Log::debug("CalibrationLog exists: " . ($log->exists ? "yes (id: {$log->id})" : "no, will create new"));

        $log->instrument = 'Welding Equipment';
        $log->description = $data['type_of_welding_machine'] ?? null;
        $log->item_no = $log->item_no ?? null;
        $log->equipment_name = $data['brand'] ?? null;           // brand -> equipment_name
        $log->manufacturer = $data['producer'] ?? null;           // producer -> manufacturer
        $log->serial_no = $data['manufacturer_code'] ?? null;     // manufacturer_code -> serial_no
        $log->passport_certificate_no = $data['attestation'] ?? null;
        $log->quantity = 1;  // Always set quantity to 1

        // Use date_of_issue as calibration_date and valid_until as calibration_due_date
        if (!empty($data['date_of_issue'])) {
            $log->calibration_date = $data['date_of_issue'];
        }

        if (!empty($data['valid_until'])) {
            $log->calibration_due_date = $data['valid_until'];
        }

        // Status calculation based on due date
        if (!empty($log->calibration_due_date)) {
            $today = Carbon::today();
            $dueDate = Carbon::parse($log->calibration_due_date)->startOfDay();

            if ($dueDate->lt($today)) {
                $log->status = 'Out Of service';  // Expired -> Out Of service
            } elseif ($dueDate->lte($today->copy()->addDays(20))) {
                $log->status = 'Calibration-Verification';  // Due Soon -> needs calibration
            } else {
                $log->status = 'In use';  // Valid -> In use
            }
        }

        try {
            $result = $log->save();
            \Log::debug("Save result: " . ($result ? "success, new id: {$log->id}" : "failed"));
        } catch (\Exception $e) {
            \Log::error("Save exception: " . $e->getMessage());
            throw $e;
        }

        return $log;
    }
}