<?php

namespace App\Models;

use App\Traits\InteractsWithUuid;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class Patient extends Model
{
    use HasFactory, InteractsWithUuid;

    protected $primaryKey = 'id';
    public $incrementing = false;
    protected $keyType = 'string';
    protected $table = 'm_patient';

    protected $fillable = [
        'id',
        'medical_record_number',
        'nik',
        'name',
        'gender',
        'birth_date',
        'birth_place',
        'address',
        'phone_number',
        'email',
        'blood_type',
        'religion',
        'marital_status',
        'emergency_contact_name',
        'emergency_contact_phone',
        'emergency_contact_relation',
    ];

    protected $casts = [
        'birth_date' => 'date',
        'created_at' => 'datetime',
        'updated_at' => 'datetime',
    ];

    protected $attributes = [
        'blood_type' => 'unknown',
    ];

    protected static function boot()
    {
        parent::boot();

        static::creating(function ($model) {
            if (empty($model->medical_record_number)) {
                $model->medical_record_number = self::generateMedicalRecordNumber();
            }
        });
    }

    public static function generateMedicalRecordNumber()
    {
        $prefix = 'MRN';
        $year = Carbon::now()->format('Y');
        $month = Carbon::now()->format('m');

        return DB::transaction(function() use ($prefix, $year, $month) {
            $latestRecord = self::whereYear('created_at', $year)
                ->whereMonth('created_at', $month)
                ->orderBy('id', 'desc')
                ->first();

            $sequence = $latestRecord ?
                (int)substr($latestRecord->medical_record_number, -4) + 1 : 1;

            return sprintf('%s-%s%s-%04d', $prefix, $year, $month, $sequence);
        });
    }
}