<?php

namespace App\Services\Chunkers;

use App\Interfaces\ChunkerInterface;
use App\Services\Decoder\JsonDecoder;
use Illuminate\Support\Facades\Redis;
use Illuminate\Support\Facades\Storage;
use JsonMachine\Exception\InvalidArgumentException;
use JsonMachine\Items;
use JsonMachine\JsonDecoder\ExtJsonDecoder;

class JsonChunker implements ChunkerInterface
{
    /**
     * @throws InvalidArgumentException
     */
    public function handle(string $uuid, string $path): \Generator
    {
        $chunk = [];

        $latest = Redis::get($uuid . ":latest") ?? 0;

        foreach (Items::fromFile(Storage::path($path), ['decoder' => new ExtJsonDecoder(true)]) as $key => $value) {
            if ($key < $latest) {
                continue;
            }

//            for cut off test you have to uncomment below codes
//            if($key == 900){
//                throw new \Exception('cut off');
//            }

            $chunk[] = $value;

            if (count($chunk) == 500) {
                yield $key => $chunk;
                $chunk = [];
            }
        }

        if (count($chunk) > 0) {
            yield $key => $chunk;
        }
    }
}