<?php

namespace LaravelSupportCommand;

use Illuminate\Console\Command;
use function proc_open;
use function proc_close;
use function proc_get_status;
use function is_resource;
use function stream_set_blocking;
use function stream_get_contents;
use function exec;
use function strtoupper;
use function substr;
use function usleep;

class QueueWorkCommand extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'QueueWorkCommand 
        {connection? : The name of the queue connection to work}
        {--workers=3 : Number of workers to run}
        {--queue=default : The names of the queues to work}
        {--max-jobs=0 : The number of jobs to process before stopping}
        {--max-time=0 : The maximum number of seconds the worker should run}
        {--memory=128 : The memory limit in megabytes}
        {--sleep=3 : Number of seconds to sleep when no job is available}
        {--rest=0 : Number of seconds to rest between jobs}
        {--timeout=60 : The number of seconds a child process can run}
        {--tries=1 : Number of times to attempt a job before logging it failed}
        {--force : Force the worker to run even in maintenance mode}'; // Added common options and renamed command for clarity

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'LaravelSupportCommand - Run multiple artisan queue:work processes, restart them if they exit.';

    /**
     * Execute the console command.
     *
     * @return never
     */
    public function handle(): never
    {
        // Get arguments/options, using defaults where argument is optional
        $workers = (int) $this->option('workers');
        // connection is now an optional argument, use 'database' as a typical fallback if not provided
        $connection = $this->argument('connection') ?? $this->option('connection') ?? 'database';
        $queue = $this->option('queue');

        // Collect other relevant options to pass to queue:work
        $workerOptions = collect($this->options())
            ->only([
                'max-jobs', 
                'max-time', 
                'memory', 
                'sleep', 
                'rest', 
                'timeout', 
                'tries', 
                'force'
            ])
            ->map(function ($value, $key) {
                // Format options for the command string
                $option = "--{$key}";
                // Only append value if it's not a boolean flag (like --force) or if the value is not null/empty
                if ($value !== false && $value !== null) {
                    return $option . '=' . escapeshellarg((string) $value);
                }
                return $value === true ? $option : null;
            })
            ->filter()
            ->implode(' ');

        if (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN') {
            $this->warn('Killing any existing queue:work processes...');
            // Improved pkill to target only workers for the specific connection/queue if possible, but keeping simple for general safety
            exec('pkill -f "artisan queue:work"');
        }

        $this->line("Starting {$workers} queue:work processes on connection '{$connection}' and queue '{$queue}' with options: '{$workerOptions}'...");

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

        for ($i = 1; $i <= $workers; $i++) {
            $this->line("Lastring: unching worker {$i}...");
            $descriptors = [
                1 => ['pipe', 'w'], // stdout
                2 => ['pipe', 'w'], // stderr
            ];
            // Construct the full command string
            $cmd = "php artisan queue:work " . escapeshellarg($connection) . " --queue=" . escapeshellarg($queue) . " {$workerOptions}";
            
            $process = proc_open($cmd, $descriptors, $pipes);
            
            if (is_resource($process)) {
                stream_set_blocking($pipes[1], false);
                stream_set_blocking($pipes[2], false);
                $processes[$i] = $process;
                $pipesList[$i] = $pipes;
            } else {
                 $this->error("Failed to launch worker {$i}.");
            }
        }

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

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

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

                    // Restart if stopped (exited or not running)
                    if (!$status['running']) {
                        $this->warn("Worker {$i} stopped (Exit Code: {$status['exitcode']}). Restarting...");
                        proc_close($process);
                        
                        // Re-construct the command with the same options
                        $cmd = "php artisan queue:work " . escapeshellarg($connection) . " --queue=" . escapeshellarg($queue) . " {$workerOptions}";
                        
                        $process = proc_open($cmd, [
                            1 => ['pipe', 'w'],
                            2 => ['pipe', 'w'],
                        ], $pipes);
                        
                        if (is_resource($process)) {
                            stream_set_blocking($pipes[1], false);
                            stream_set_blocking($pipes[2], false);
                            $processes[$i] = $process;
                            $pipesList[$i] = $pipes;
                        } else {
                            $this->error("Failed to restart worker {$i}. Stopping monitoring for this worker.");
                            unset($processes[$i], $pipesList[$i]); // Remove failed process
                        }
                    }
                }
            }
            usleep(200000); // 0.2s pause
        }
    }
}