<?php

namespace App\Services;

use Illuminate\Support\Facades\Storage;

class ItemDataService
{
    protected static bool $loaded = false;

    protected static ?array $icons = null;

    protected static ?array $descriptions = null;

    public function __construct()
    {
        $this->loadData();
    }

    protected function loadData()
    {
        if (self::$loaded) {
            return;
        }

        if (Storage::has('item-data/item_list.txt')) {
            self::$icons = collect(explode("\n", Storage::get('item-data/item_list.txt')))
                ->map(fn ($line) => str_getcsv($line, "\t"))
                ->filter(fn ($item) => isset($item[0], $item[2]))
                ->mapWithKeys(fn ($item) => [intval($item[0]) => str($item[2])->basename()->replaceMatches('/tga|dds/i', 'png')])
                ->toArray();
        } else {
            self::$icons = [];
        }

        if (Storage::has('item-data/itemdesc.txt')) {
            self::$descriptions = collect(explode("\n", Storage::get('item-data/itemdesc.txt')))
                ->map(fn ($line) => str_getcsv($line, "\t"))
                ->filter(fn ($item) => isset($item[0], $item[2]))
                ->mapWithKeys(fn ($item) => [intval($item[0]) => $item[2]])
                ->toArray();
        } else {
            self::$descriptions = [];
        }

        self::$loaded = true;
    }

    public function getIcon(int $vnum): ?string
    {
        $this->loadData();

        return self::$icons[$vnum] ?? null;
    }

    public function getDescription(int $vnum): ?string
    {
        $this->loadData();

        return self::$descriptions[$vnum] ?? null;
    }

    public static function flush(): void
    {
        self::$loaded = false;
        self::$icons = [];
        self::$descriptions = [];
    }
}