<?php

namespace App\Observers;

use App\Models\Achievement;
use App\Models\Airline;
use App\Models\Alliance;

class AirlineObserver
{
    public function created(Airline $airline): void
    {
        if ($airline->alliance_id !== null) {
            $this->syncAllianceThresholds();
        }
    }

    public function updated(Airline $airline): void
    {
        if ($airline->wasChanged('alliance_id')) {
            $this->syncAllianceThresholds();
        }
    }

    public function deleted(Airline $airline): void
    {
        $this->syncAllianceThresholds();
    }

    private function syncAllianceThresholds(): void
    {
        Alliance::withCount('airlines')->each(function (Alliance $alliance) {
            Achievement::where('internal_name', "airlines_alliances.all_{$alliance->internal_name}")
                ->update(['threshold' => $alliance->airlines_count]);
        });
    }
}