zettle.common.php

  <?php

  function emptyConfig()
  {
    return [
      'client_id' => '',
      'client_secret'  => '',
      'organizationUuid' => '',
      'subscriptions' => [],
      'effect_activate' => 'no',
      'command' => ''
    ];
  }

  function convertAndGetSettings($filename)
  {
    global $settings;

    $cfgFile = $settings['configDirectory'] . "/plugin.fpp-" . $filename . ".json";
    if (file_exists($cfgFile)) {
      $j = file_get_contents($cfgFile);
      $json = json_decode($j, true);
      return $json;
    }
    // Create json for config not found
    if ($filename == 'zettle') {
      $j = json_encode(emptyConfig());
    }
    // Create json for transactions not found
    if ($filename == 'zettle-transactions') {
      $j = json_encode([]);
    }
    return json_decode($j, true);
  }

  function writeToJsonFile($filename, $data)
  {
    global $settings;

    $cfgFile = $settings['configDirectory'] . "/plugin.fpp-zettle-" . $filename . ".json";
    $json_data = json_encode($data);
    file_put_contents($cfgFile, $json_data);
  }

  function readConfig()
  {
    global $settings;

    $url = $settings['configDirectory'] . "/plugin.fpp-zettle.json";
    $config = file_get_contents($url);
    $config = utf8_encode($config);
    return json_decode($config);
  }

  function readTransactions()
  {
    global $settings;

    $url = $settings['configDirectory'] . "/plugin.fpp-zettle-transactions.json";
    $config = file_get_contents($url);
    $config = utf8_encode($config);
    return json_decode($config);
  }

  function logEntry($data)
  {
    global $settings;

    $logFile = $settings['logDirectory'] . "/fpp-zettle.log";
    $logWrite = fopen($logFile, "a") or die("Unable to open file!");
    fwrite($logWrite, date('Y-m-d h:i:s A', time()) . ": " . $data . "\n");
    fclose($logWrite);
  }

  function checkForDataplicity()
  {
    $serial = '/opt/dataplicity/tuxtunnel/serial';
    return file_exists($serial);
  }

  function checkForUIPassword()
  {
    global $settings;

    if (array_key_exists('passwordEnable', $settings)) {
      return $settings['passwordEnable'] == "0" ? false : true;
    }
    return false;
  }

  function outputSettings()
  {
    global $settings;
    return $settings;
  }

  function custom_logs($message)
  {
    global $settings;
    if (is_array($message)) {
      $message = json_encode($message);
    }
    $file = fopen($settings['logDirectory'] . "/fpp-zettle.log", "a");
    fwrite($file, "\n" . date('Y-m-d H:i:s') . " :: " . $message);
    fclose($file);
    return;
  }

  function totalTransactions($amount = 0)
  {
    global $settings;

    $filepath = $settings['configDirectory'] . "/plugin.fpp-zettle-transactions-total.txt";
    // Check if exists
    if (!file_exists($filepath)) {
      file_put_contents($filepath, 0);
    }
    // Get current total
    $current = (int) file_get_contents($filepath);
    // Check if amount is set
    if ($amount > 0) {
      // Add amount to current total
      $newTotal = $current + $amount;
      // Write to file
      file_put_contents($filepath, $newTotal);
      return number_format($newTotal, 2);
    } else {
      return number_format($current, 2);
    }
  }

  function runningTotal($option = 'everything')
  {
    return trim(file_get_contents('http://localhost/plugin.php?plugin=fpp-zettle&page=zettle.php&command=get_purchases&nopage=1&option=' . $option));
  }

  function isSiteAvailible($url)
  {
    // Check, if a valid url is provided
    if (!filter_var($url, FILTER_VALIDATE_URL)) {
      return false;
    }

    // Initialize cURL
    $curlInit = curl_init($url);

    // Set options
    curl_setopt($curlInit, CURLOPT_CONNECTTIMEOUT, 10);
    curl_setopt($curlInit, CURLOPT_HEADER, true);
    curl_setopt($curlInit, CURLOPT_NOBODY, true);
    curl_setopt($curlInit, CURLOPT_RETURNTRANSFER, true);

    // Get response
    $response = curl_exec($curlInit);
    $httpcode = curl_getinfo($curlInit, CURLINFO_HTTP_CODE);

    // Close a cURL session
    curl_close($curlInit);

    // return $response?true:false;
    return $httpcode;
  }

  /**
   * Explode destination url make sure all is right
   *
   * @param string $url This is the url that zettle will talk to
   * @param array $settings fpp settings
   * @return string
   */
  function explode_destination_url(string $url, array $settings)
  {
    $explode_destination_url = explode('/', $url);
    // Get the url that we need
    $base_url = $explode_destination_url[2];
    // Check if explode_destination_url last item == event
    if (end($explode_destination_url) == 'event') {
      // Unset first two explode_destination_url items
      unset($explode_destination_url[0]);
      unset($explode_destination_url[1]);
      // Rebuild destination url
      return implode('/', $explode_destination_url);
    } else {
      // Build destination url with added part
      return $base_url . '/api/plugin/fpp-zettle/event';
    }
    // // Check for ui password
    // if (checkForUIPassword()) {
    //     // Build username_password
    //     $username_password = 'admin:' . $settings['password'] . '@';
    //     // Combine username_password and destination
    //     $complete_destination_url = $username_password . $destination;
    // } else {
    //     // set destination as password is not found
    //     $complete_destination_url = $destination;
    // }

    // return $complete_destination_url;
  }

  function jsonOutput($array)
  {
    return json_encode($array);
  }