<?php

namespace App\Traits;

/**
 * Show the diff for the model
 */
trait CanModelDiff
{
    /**
     * Fetch a diff for the model's current state.
     */
    public function getDiff()
    {
        // get the old model
        $changed = $this->getDirty();
        // collect the new data
        $fix = is_null($this->fresh()) ? [''] : $this->fresh()->toArray();
        // find the properties that changed
        $before = array_intersect_key($fix, $changed);
        $after = $changed;

        // returns an array
        return compact('before', 'after');
    }
}

// USAGE NOTE: The diff feature can only be used during `eloquent.updating`

// $changes = $model->getDiff();
// // the activated property was changed
// if (isset($changes['after']['activated'])) {
//     $model->notify(new ModelActivated());
// }

// // the email property was changed. email new owner?
// if (isset($changes['after']['email'])) {
//     $model->notify(new ModelEmailUpdated());
// }