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<?php |
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namespace Sebdesign\SM\Commands; |
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use Illuminate\Console\Command; |
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use Symfony\Component\Console\Helper\TableSeparator; |
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class Debug extends Command |
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{ |
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/** |
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* The name and signature of the console command. |
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* |
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* @var string |
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*/ |
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protected $signature = 'winzou:state-machine:debug {graph? : A state machine graph}'; |
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/** |
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* The console command description. |
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* |
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* @var string |
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*/ |
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protected $description = 'Show states and transitions of state machine graphs'; |
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protected $config; |
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/** |
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* Create a new command instance. |
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* |
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* @param array $config |
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*/ |
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public function __construct(array $config) |
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{ |
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parent::__construct(); |
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$this->config = $config; |
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} |
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/** |
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* Execute the console command. |
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* |
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* @return mixed |
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*/ |
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public function handle() |
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{ |
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if (empty($this->config)) { |
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$this->error('There are no state machines configured.'); |
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return 1; |
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} |
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if (! $this->argument('graph')) { |
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$this->askForGraph(); |
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} |
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$graph = $this->argument('graph'); |
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if (! array_key_exists($graph, $this->config)) { |
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$this->error('The provided state machine graph is not configured.'); |
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return 1; |
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} |
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$config = $this->config[$graph]; |
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$this->printStates($config['states']); |
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$this->printTransitions($config['transitions']); |
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if (isset($config['callbacks'])) { |
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$this->printCallbacks($config['callbacks']); |
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} |
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return 0; |
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} |
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/** |
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* Ask for a graph name if one was not provided as argument. |
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*/ |
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protected function askForGraph() |
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{ |
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$choices = array_map(function ($name, $config) { |
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return $name."\t(".$config['class'].' - '.$config['graph'].')'; |
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}, array_keys($this->config), $this->config); |
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$choice = $this->choice('Which state machine would you like to know about?', $choices, 0); |
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$choice = substr($choice, 0, strpos($choice, "\t")); |
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$this->info('You have just selected: '.$choice); |
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$this->input->setArgument('graph', $choice); |
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} |
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/** |
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* Display the graph states on a table. |
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* |
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* @param array $states |
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*/ |
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protected function printStates(array $states) |
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{ |
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$this->table(['Configured States:'], array_map(function ($state) { |
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return [$state]; |
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}, $states)); |
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} |
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/** |
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* Display the graph transitions on a table. |
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* |
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* @param array $transitions |
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*/ |
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protected function printTransitions(array $transitions) |
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{ |
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end($transitions); |
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$lastTransition = key($transitions); |
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reset($transitions); |
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$rows = []; |
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foreach ($transitions as $name => $transition) { |
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$rows[] = [$name, implode("\n", $transition['from']), $transition['to']]; |
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if ($name !== $lastTransition) { |
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$rows[] = new TableSeparator(); |
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} |
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} |
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$this->table(['Transition', 'From(s)', 'To'], $rows); |
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} |
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/** |
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* Display the graph callbacks on a table. |
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* |
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* @param array $allCallbacks |
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*/ |
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protected function printCallbacks(array $allCallbacks) |
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{ |
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foreach ($allCallbacks as $type => $callbacks) { |
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$rows = []; |
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foreach ($callbacks as $name => $callback) { |
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$rows[] = [ |
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$name, |
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$this->formatClause($callback, 'on'), |
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$this->formatCallable($callback['do']), |
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$this->formatClause($callback, 'args'), |
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]; |
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} |
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$this->table([ucfirst($type). ' Callbacks', 'On', 'Do', 'Args'], $rows); |
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} |
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} |
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protected function formatClause(array $callback, $clause) |
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{ |
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if (isset($callback[$clause])) { |
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return implode(PHP_EOL, (array) $callback[$clause]); |
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} |
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} |
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/** |
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* Format the callable. |
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* |
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* @param callable $callable |
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* @return string |
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*/ |
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protected function formatCallable($callable) |
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{ |
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if (is_array($callable)) { |
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return implode('@', $callable); |
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} |
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if ($callable instanceof \Closure) { |
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return 'Closure'; |
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} |
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return $callable; |
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} |
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} |
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