<?php

/**
 * Watches for "tell me about <slug>"
 *   and "phabot remember <slug> as: <text>"
 *
 * @group irc
 */
final class PhabricatorBotDocHandler extends PhabricatorBotHandler {

  public function receiveMessage(PhabricatorBotMessage $message) {

    switch ($message->getCommand()) {
    case 'MESSAGE':
      $matches = null;

      $text = $message->getBody();

      $pattern = '@^tell me about (.*)$@';

      if (preg_match($pattern, $text, $matches)) {
        try {
          $result = $this->getConduit()->callMethodSynchronous(
            'phriction.info',
            array(
              'slug' => 'docbot/'.$matches[1],
            ));
        } catch (ConduitClientException $ex) {
          phlog($ex);
          $result = null;
        }

        $response = array();

        if ($result) {
          $content = phutil_split_lines(
            $result['content'],
            $retain_newlines = false
          );

          foreach ($content as $line) {
            $response = array_merge($response, str_split($line, 400));

            if (count($response) >= 3) {
              break;
            }
          }
        } else {
          $response[] = "Nothing to say about ".$slug;
        }

        foreach (array_slice($response, 0, 3) as $output) {
          $this->replyTo($message, html_entity_decode($output));
        }
        break;
      }

      $pattern =
        '@'.
        $this->getConfig('nick', 'phabot').
        ' remember '.
        '(.*?)'.
        ' as:'.
        '(.*)$'.
        '@';

      if (preg_match($pattern, $text, $matches)) {
        $result = $this->getConduit()->callMethodSynchronous(
          'phriction.edit',
          array(
            'slug' => 'docbot/'.$matches[1],
            'content' => $matches[2],
          ));

	$slug = explode('/', trim($result['slug'], '/'));

        $output = "Saved as '${slug[1]}' at ${result['uri']}";

        $this->replyTo($message, $output);

        break;
      }
      break;
    }
  }

  private function lookupDoc($slug) {
  }

}