<?php

namespace App\Services;

use App\Models\Appointment;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Support\Str;

class AppointmentService
{
    public function getAll(): Collection
    {
        return Appointment::with(['user', 'partnerAgreement', 'partnerAgreementService'])
            ->orderBy('date', 'desc')
            ->get();
    }

    public function getAllByUser(int $userId): Collection
    {
        return Appointment::with(['partnerAgreement', 'partnerAgreementService'])
            ->where('user_id', $userId)
            ->orderBy('date', 'desc')
            ->get();
    }

    public function findById(int $id): ?Appointment
    {
        return Appointment::with(['user', 'partnerAgreement', 'partnerAgreementService'])->find($id);
    }

    public function create(array $data): Appointment
    {
        $data['order_number'] = $this->generateOrderNumber();
        $data['requested_at'] = now();

        return Appointment::create($data);
    }

    public function update(int $id, array $data): ?Appointment
    {
        $model = Appointment::find($id);

        if (!$model) {
            return null;
        }

        $model->update($data);
        return $model->fresh(['user', 'partnerAgreement', 'partnerAgreementService']);
    }

    public function delete(int $id): bool
    {
        $model = Appointment::find($id);

        if (!$model) {
            return false;
        }

        return $model->delete();
    }

    private function generateOrderNumber(): string
    {
        do {
            $number = 'AGD-' . strtoupper(Str::random(8));
        } while (Appointment::where('order_number', $number)->exists());

        return $number;
    }
}