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<?php |
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/* |
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* This file is part of Rivescript-php |
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* |
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* (c) Shea Lewis <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Axiom\Rivescript\Cortex; |
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use Axiom\Rivescript\Cortex\ResponseQueue\ResponseQueueItem; |
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use Axiom\Rivescript\Traits\Regex; |
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use Axiom\Rivescript\Traits\Tags; |
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/** |
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* Output class |
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* |
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* This class is responsible for generating the |
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* bot response. |
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* |
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* PHP version 7.4 and higher. |
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* |
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* @category Core |
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* @package Cortext |
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* @author Shea Lewis <[email protected]> |
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* @license https://opensource.org/licenses/MIT MIT |
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* @link https://github.com/axiom-labs/rivescript-php |
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* @since 0.3.0 |
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*/ |
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class Output |
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{ |
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use Regex; |
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use Tags; |
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/** |
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* The output string |
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* |
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* @var string |
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*/ |
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protected string $output = ''; |
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/** |
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* Keep track of the recursion |
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* in the output. |
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* |
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* @var int |
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*/ |
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protected int $recursion = 0; |
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/** |
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* Process the correct output response by the interpreter. |
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* |
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* @return string |
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*/ |
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public function process(): string |
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{ |
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// $triggers = synapse()->brain->topic()->triggers(); |
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$begin = synapse()->brain->topic("__begin__"); |
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$this->output = ""; |
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/** |
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* 1. Check if topic is valid |
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* 2. Process the triggers |
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* 3. if valid trigger |
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* - Check if response is redirect |
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* - |
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*/ |
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// if ($begin) { |
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// synapse()->rivescript->say("Begin label found. Starting processing."); |
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// |
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// $request = $begin->triggers()->get("request"); |
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// |
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// if ($request) { |
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// $this->output = $request['responses']->process(); |
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// |
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// if ($begin->isOk() === false) { |
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// return $this->output; |
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// } |
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// } |
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// } |
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return $this->processTopic(); |
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return trim($this->output); |
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} |
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protected function processTopic(int $recursion = 0): string |
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{ |
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$topic = synapse()->memory->shortTerm()->get('topic') ?? 'random'; |
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// synapse()->rivescript->say("TOPIC {$topic}..."); |
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$triggers = synapse()->brain->topic($topic)->triggers(); |
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if ($recursion == 200) { |
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synapse()->rivescript->warn("Top many recursive calls to :func", ["func" => __CLASS__ . "::" . __FUNCTION__]); |
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exit; |
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} |
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foreach ($triggers as $trigger => $data) { |
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$valid = $this->isValidTrigger($trigger); |
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if ($valid === true) { |
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synapse()->rivescript->debug("Found trigger \":trigger\".", [ |
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'trigger' => $trigger, |
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]); |
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synapse()->memory->shortTerm()->put('trigger', $trigger); |
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$response = $this->getValidResponse($trigger); |
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if ($response) { |
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if ($response->isTopicChanged() === true) { |
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synapse()->rivescript->debug( |
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"Topic changed from \":from\" to \":to\"", |
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[ |
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"from" => $topic, |
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"to" => synapse()->memory->shortTerm()->get('topic') ?? 'random' |
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] |
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); |
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synapse()->rivescript->debug( |
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"Parsed trigger :trigger", |
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[ |
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"trigger" => $response->getValue(), |
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] |
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); |
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// synapse()->memory->shortTerm()->put('trigger', $response->getValue()); |
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/** |
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* The topic has changed to something else during $this->getValidResponse($trigger). |
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* Call $this->>processTopic again to process the new topic. |
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* |
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* @note in this case the input can stay the same. |
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*/ |
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// return $this->processTopic(++$recursion); |
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} |
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if ($response->isRedirect() === true) { |
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synapse()->rivescript->debug("Found redirect to \":redirect\" current topic is \":topic\".", [ |
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"redirect" => $response->getRedirect(), |
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"topic" => $response->getTopic() |
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]); |
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synapse()->input = new Input($response->getRedirect(), synapse()->rivescript->getClientId()); |
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synapse()->memory->shortTerm()->put('trigger', $response->getRedirect()); |
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return $this->processTopic(++$recursion); |
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} |
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$output = $response->getValue(); |
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if ($output) { |
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$this->output = $output; |
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break; |
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} |
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} else { |
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synapse()->rivescript->warn("Could not find a valid response for trigger \":trigger\"", [ |
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"trigger" => $trigger |
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]); |
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} |
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} |
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} |
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return trim($this->output); |
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} |
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/** |
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* Search through available triggers to find a possible match. |
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* |
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* @param string $trigger The trigger to find responses for. |
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* |
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* @return bool |
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*/ |
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protected function isValidTrigger(string $trigger): bool |
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{ |
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$triggers = synapse()->triggers; |
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foreach ($triggers as $class) { |
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$triggerClass = "\\Axiom\\Rivescript\\Cortex\\Triggers\\{$class}"; |
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$triggerInstance = new $triggerClass(synapse()->input); |
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$found = $triggerInstance->parse($trigger, synapse()->input); |
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if ($found) { |
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return true; |
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} |
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} |
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return false; |
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} |
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protected function getValidResponse(string $trigger) |
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{ |
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$originalTrigger = synapse()->brain->topic()->triggers()->get($trigger); |
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$queueItem = null; |
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if ($originalTrigger['responses']) { |
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$queueItem = $originalTrigger['responses']->process(); |
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if ($queueItem) { |
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$queueItem->parse(); |
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} |
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} |
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return $queueItem; |
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} |
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} |
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