Sebdesign\SM\Commands\Visualize

Complexity

Total Complexity

11

Size/Duplication

Total Lines	133
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	6	1
A	handle()	0	26	4
B	stateMachineInDotFormat()	0	70	6

<?php

namespace Sebdesign\SM\Commands;

use Illuminate\Console\Command;
use Symfony\Component\Process\Exception\ProcessFailedException;
use Symfony\Component\Process\Process;

class Visualize extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'winzou:state-machine:visualize {graph? : A state machine graph} {--output=./graph.jpg} {--format=jpg} {--direction=TB} {--shape=circle} {--dot-path=/usr/local/bin/dot}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Generates an image of the states and transitions of state machine graphs';

    protected $config;

    /**
     * Create a new command instance.
     *
     * @param array $config
     */
    public function __construct(array $config)
    {
        parent::__construct();

        $this->config = $config;
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        if (empty($this->config)) {
            $this->error('There are no state machines configured.');

            return 1;
        }

        if (!$this->argument('graph')) {
            $this->askForGraph();

The method askForGraph does not exist on object<Sebdesign\SM\Commands\Visualize>? Since you implemented __call, maybe consider adding a @method annotation.

        }

        $graph = $this->argument('graph');

        if (!array_key_exists($graph, $this->config)) {
            $this->error('The provided state machine graph is not configured.');

            return 1;
        }

        $config = $this->config[$graph];

        $this->stateMachineInDotFormat($config);

        return 0;
    }

    protected function stateMachineInDotFormat(array $config)
    {
        // Output image mime types.
        $mimeTypes = [
            'png' => 'image/png',
            'jpg' => 'image/jpeg',
            'gif' => 'image/gif',
            'svg' => 'image/svg+xml',
        ];

        $format = $this->option('format');

        if (empty($mimeTypes[$format])) {
            throw new \Exception(sprintf("Format '%s' is not supported", $format));
        }

        $dotPath = $this->option('dot-path');

        // Temporary files.
        $dotFile = tempnam(sys_get_temp_dir(), 'smv');
        $outputImage = $this->option('output');

        // Display settings
        $layout = $this->option('direction');
        $layout = $layout === 'TB' ? 'TB' : 'LR';

        $nodeShape = $this->option('shape');

        // Build dot file content.
        $result = [];
        $result[] = 'digraph finite_state_machine {';
        $result[] = "rankdir=$layout;";
        $result[] = 'node [shape = point]; _start_'; // Input node

        // Use first value from 'states' as start.
        $start = $config['states'][0]['name'];
        $result[] = "node [shape = $nodeShape];"; // Default nodes
        $result[] = '_start_ -> ' . $start . ';'; // Input node -> starting node.

        foreach ($config['transitions'] as $name => $transition) {
            foreach ($transition['from'] as $from) {
                $result[] = $from . ' -> ' . $transition['to'] . '[ label = "' . $name . '" ];';
            }
        }

        $result[] = '}';

        $result = implode(PHP_EOL, $result);

        // Save dot file for input.
        file_put_contents($dotFile, $result);

        // Dot command.
        $cmd = sprintf(

$cmd is not used, you could remove the assignment.

            "%s -T%s -o %s %s",
            $dotPath,
            $format,
            $outputImage, // Output file
            $dotFile // Input file
        );


        $process = new Process([$dotPath, '-T' . $format, '-o', $outputImage, $dotFile]);
        $process->run();

        // executes after the command finishes
        if (!$process->isSuccessful()) {
            throw new ProcessFailedException($process);
        }
    }
}