<?php

namespace LaravelSupportCommand;

use Illuminate\Console\Command;

class QueueWorkCommand extends Command
{
    protected $signature = 'QueueWork {--workers=3 : Number of workers to run}';
    protected $description = 'LaravelSupportCommand - Run multiple artisan queue:work processes, restart them if they exit.';

    public function handle(): never
    {
        $workers = (int) $this->option('workers');

        if (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN') {
            $this->warn('Killing any existing queue:work processes...');
            exec('pkill -f "artisan queue:work"');
        }

        $this->info("Starting {$workers} queue:work processes...");

        $processes = [];
        $pipesList = [];

        for ($i = 1; $i <= $workers; $i++) {
            $this->info("Launching worker {$i}...");
            $descriptors = [
                1 => ['pipe', 'w'], // stdout
                2 => ['pipe', 'w'], // stderr
            ];
            $process = proc_open('php artisan queue:work', $descriptors, $pipes);
            if (is_resource($process)) {
                stream_set_blocking($pipes[1], false);
                stream_set_blocking($pipes[2], false);
                $processes[$i] = $process;
                $pipesList[$i] = $pipes;
            }
        }

        // Monitor loop
        while (true) {
            foreach ($processes as $i => $process) {
                if (is_resource($process)) {
                    $status = proc_get_status($process);

                    // Read stdout
                    $out = stream_get_contents($pipesList[$i][1]);
                    if ($out !== '') {
                        foreach (explode("\n", trim($out)) as $line) {
                            if ($line !== '') {
                                $this->info("[Worker {$i}] " . $line);
                            }
                        }
                    }

                    // Read stderr
                    $err = stream_get_contents($pipesList[$i][2]);
                    if ($err !== '') {
                        foreach (explode("\n", trim($err)) as $line) {
                            if ($line !== '') {
                                $this->error("[Worker {$i}] " . $line);
                            }
                        }
                    }

                    // Restart if stopped
                    if (!$status['running']) {
                        $this->warn("Worker {$i} stopped. Restarting...");
                        proc_close($process);
                        $process = proc_open('php artisan queue:work', [
                            1 => ['pipe', 'w'],
                            2 => ['pipe', 'w'],
                        ], $pipes);
                        stream_set_blocking($pipes[1], false);
                        stream_set_blocking($pipes[2], false);
                        $processes[$i] = $process;
                        $pipesList[$i] = $pipes;
                    }
                }
            }
            usleep(200000); // 0.2s pause to avoid busy loop
        }
    }
}