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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:', 'Metadata:'], array_map(function ($state) { |
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if (is_string($state)) { |
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return [$state, null]; |
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} |
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if (isset($state['metadata'])) { |
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$metadata = implode(PHP_EOL, array_map(function ($value, $key) { |
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return vsprintf('%s: %s', [$key, $value]); |
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}, $state['metadata'], array_keys($state['metadata']))); |
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} else { |
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$metadata = null; |
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} |
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return [$state['name'], $metadata]; |
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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(PHP_EOL, $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 $position => $callbacks) { |
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$rows = []; |
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foreach ($callbacks as $name => $specs) { |
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$rows[] = [ |
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$name, |
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$this->formatSatisfies($specs), |
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$this->formatCallable($specs), |
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$this->formatClause($specs, 'args'), |
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]; |
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} |
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$this->table([ucfirst($position).' Callbacks', 'Satisfies', 'Do', 'Args'], $rows); |
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} |
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} |
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/** |
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* Format the clauses that satisfy the callback. |
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* |
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* @param array $specs |
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* @return string |
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*/ |
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protected function formatSatisfies(array $specs) |
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{ |
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$clauses = array_map(function ($clause) use ($specs) { |
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if ($result = $this->formatClause($specs, $clause)) { |
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return vsprintf('%s: %s', [ |
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ucfirst(str_replace('_', ' ', $clause)), |
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$result, |
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]); |
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} |
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}, ['from', 'excluded_from', 'on', 'excluded_on', 'to', 'excluded_to']); |
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return implode(PHP_EOL, array_filter($clauses)); |
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} |
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/** |
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* Format the callback clause. |
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* |
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* @param array $specs |
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* @param string $clause |
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* @return string |
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*/ |
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protected function formatClause(array $specs, $clause) |
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{ |
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if (isset($specs[$clause])) { |
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return implode(', ', (array) $specs[$clause]); |
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} |
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return ''; |
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} |
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/** |
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* Format the callable callable. |
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* |
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* @param array $specs |
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* @return string |
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*/ |
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protected function formatCallable(array $specs) |
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{ |
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if (isset($specs['can'])) { |
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$callback = json_encode($specs['can']); |
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return "Gate::check({$callback})"; |
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} |
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if (! isset($specs['do'])) { |
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return ''; |
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} |
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$callback = $specs['do']; |
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if ($callback instanceof \Closure) { |
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return 'Closure'; |
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} |
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if (is_string($callback)) { |
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if (strpos($callback, '@') !== false) { |
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$callback = explode('@', $callback); |
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} else { |
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return $callback.'()'; |
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} |
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} |
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if (is_array($callback)) { |
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return implode('::', $callback).'()'; |
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} |
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return $callback; |
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} |
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} |
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sebdesign /
laravel-state-machine
