<?php

namespace App\Services;

use App\Models\FranchiseeContract;
use Illuminate\Database\Eloquent\Collection;

class FranchiseeContractService
{
    public function getAll(): Collection
    {
        return FranchiseeContract::orderBy('created_at', 'desc')
            ->get();
    }

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

    public function getByUnitId(int $unitId): Collection
    {
        return FranchiseeContract::where('unit_id', $unitId)
            ->orderBy('created_at', 'desc')
            ->get();
    }

    public function create(array $data): FranchiseeContract
    {
        $data['protocol'] = (FranchiseeContract::where('unit_id', $data['unit_id'])->max('protocol') ?? 0) + 1;
        $data['signature_date'] = $data['start_date'];

        if (isset($data['start_date'], $data['end_date'])) {
            $data['validity_months'] = (int) \Carbon\Carbon::parse($data['start_date'])
                ->diffInMonths(\Carbon\Carbon::parse($data['end_date']));
        }

        return FranchiseeContract::create($data);
    }

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

        if (!$model) {
            return null;
        }

        $model->update($data);
        return $model->fresh();
    }

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

        if (!$model) {
            return false;
        }

        return $model->delete();
    }

    // Add custom business logic methods here
}