sfp_api_laravel_ginastica_cerebro/app/Services/StudentService.php

<?php

namespace App\Services;

use App\Models\Student;
use App\Models\StudentContract;
use App\Models\User;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\Storage;

class StudentService
{
    public function getAll(User $user): Collection
    {
        $unitId = $this->resolveUnitId($user);

        return Student::where('unit_id', $unitId)
            ->orderBy('created_at', 'desc')
            ->get();
    }

    public function getFranchisorActive(array $unitIds = []): Collection
    {
        return Student::with('unit')
            ->whereHas('contracts', fn ($q) => $q->where('status', 'active'))
            ->when(!empty($unitIds), fn ($q) => $q->whereIn('unit_id', $unitIds))
            ->orderBy('name')
            ->get();
    }

    public function getFranchisorStudentDetail(int $id): ?array
    {
        $student = Student::with('unit')->find($id);

        if (!$student) {
            return null;
        }

        $contract = StudentContract::where('student_id', $id)
            ->where('status', 'active')
            ->first();

        return [
            'id'       => $student->id,
            'name'     => $student->name,
            'phone'    => $student->phone,
            'unit'     => $student->unit ? ['fantasy_name' => $student->unit->fantasy_name] : null,
            'protocol' => $contract?->protocol,
        ];
    }

    public function getFranchisorSummary(array $unitIds = []): array
    {
        $query = Student::query()->when(!empty($unitIds), fn ($q) => $q->whereIn('unit_id', $unitIds));

        $total  = $query->count();
        $active = (clone $query)->where('status', 'active')->count();

        return ['total' => $total, 'active' => $active];
    }

    public function findById(int $id): ?Student
    {
        return Student::find($id);
    }

    public function create(User $user, array $data): Student
    {
        $unitId = $this->resolveUnitId($user);
        $data = $this->handlePhoto($data);

        return Student::create(array_merge($data, ['unit_id' => $unitId]));
    }

    public function update(int $id, array $data): ?Student
    {
        $model = $this->findById($id);

        if (!$model) {
            return null;
        }

        $data = $this->handlePhoto($data, $model->photo_url);
        $model->update($data);

        return $model->fresh();
    }

    public function delete(int $id): bool
    {
        $model = $this->findById($id);

        if (!$model) {
            return false;
        }

        if ($model->photo_url) {
            Storage::delete($model->photo_url);
        }

        return $model->delete();
    }

    private function handlePhoto(array $data, ?string $oldPhotoPath = null): array
    {
        if (!isset($data['avatar'])) {
            return $data;
        }

        if ($data['avatar'] instanceof UploadedFile) {
            if ($oldPhotoPath) {
                Storage::delete($oldPhotoPath);
            }
            $data['photo_url'] = $data['avatar']->store('students/photos');
        } elseif (is_null($data['avatar'])) {
            if ($oldPhotoPath) {
                Storage::delete($oldPhotoPath);
            }
            $data['photo_url'] = null;
        }

        unset($data['avatar']);
        return $data;
    }

    private function resolveUnitId(User $user): int
    {
        $activeUnitId = request()->input('active_unit_id');

        if ($activeUnitId) {
            $unit = $user->units()->where('units.id', $activeUnitId)->first();
            abort_if(!$unit, 403, 'Unidade não autorizada para este usuário.');
            return $unit->id;
        }

        $unit = $user->units()->first();
        abort_if(!$unit, 403, 'Usuário sem unidade associada.');
        return $unit->id;
    }
}