<?php

namespace App\Services\Achievements\Checkers;

use App\Models\User;

class FunChallengesChecker extends BaseChecker
{
    public function check(): void
    {
        $flights = $this->flights();

        $airlineLetters = $flights
            ->filter(fn($f) => $f->airline?->IATA_code !== null)
            ->map(fn($f) => strtoupper($f->airline->IATA_code[0]))
            ->filter(fn($letter) => ctype_alpha($letter))
            ->unique()
            ->count();

        $this->awardProgress($airlineLetters, 'fun_challenges.airline_alphabet');

        // --- Visit the Alphabet ---
        // Collect first letters from both departure and arrival airport IATA codes

        $airportLetters = $flights
            ->flatMap(fn($f) => [
                $f->departureAirport?->iata_code,
                $f->arrivalAirport?->iata_code,
            ])
            ->filter()
            ->map(fn($code) => strtoupper($code[0]))
            ->unique()
            ->count();

        $this->awardProgress($airportLetters, 'fun_challenges.airport_alphabet');
    }
}