<?php

include_once('includes/status_messages.php');
include_once('includes/wifi_functions.php');

/**
*
*
*/
function DisplayWPAConfig()
{
    $status = new StatusMessages();
    $networks = [];

    knownWifiStations($networks);

    if (isset($_POST['connect'])) {
        $result = 0;
        exec('sudo wpa_cli -i ' . RASPI_WPA_CTRL_INTERFACE . ' select_network '.strval($_POST['connect']));
    } elseif (isset($_POST['client_settings'])) {
        $tmp_networks = $networks;
        if ($wpa_file = fopen('/tmp/wifidata', 'w')) {
            fwrite($wpa_file, 'ctrl_interface=DIR=' . RASPI_WPA_CTRL_INTERFACE . ' GROUP=netdev' . PHP_EOL);
            fwrite($wpa_file, 'update_config=1' . PHP_EOL);

            foreach (array_keys($_POST) as $post) {
                if (preg_match('/delete(\d+)/', $post, $post_match)) {
                    unset($tmp_networks[$_POST['ssid' . $post_match[1]]]);
                } elseif (preg_match('/update(\d+)/', $post, $post_match)) {
                    // NB, at the moment, the value of protocol from the form may
                    // contain HTML line breaks
                    $tmp_networks[$_POST['ssid' . $post_match[1]]] = array(
                    'protocol' => ( $_POST['protocol' . $post_match[1]] === 'Open' ? 'Open' : 'WPA' ),
                    'passphrase' => $_POST['passphrase' . $post_match[1]],
                    'configured' => true
                    );
                    if (array_key_exists('priority' . $post_match[1], $_POST)) {
                        $tmp_networks[$_POST['ssid' . $post_match[1]]]['priority'] = $_POST['priority' . $post_match[1]];
                    }
                }
            }

            $ok = true;
            foreach ($tmp_networks as $ssid => $network) {
                if ($network['protocol'] === 'Open') {
                    fwrite($wpa_file, "network={".PHP_EOL);
                    fwrite($wpa_file, "\tssid=\"".$ssid."\"".PHP_EOL);
                    fwrite($wpa_file, "\tkey_mgmt=NONE".PHP_EOL);
		    fwrite($wpa_file, "\tscan_ssid=1".PHP_EOL);
                    if (array_key_exists('priority', $network)) {
                        fwrite($wpa_file, "\tpriority=".$network['priority'].PHP_EOL);
                    }
                    fwrite($wpa_file, "}".PHP_EOL);
                } else {
                    if (strlen($network['passphrase']) >=8 && strlen($network['passphrase']) <= 63) {
                        unset($wpa_passphrase);
                        unset($line);
                        exec('wpa_passphrase '.escapeshellarg($ssid). ' ' . escapeshellarg($network['passphrase']), $wpa_passphrase);
                        foreach ($wpa_passphrase as $line) {
                            if (preg_match('/^\s*}\s*$/', $line)) {
                                if (array_key_exists('priority', $network)) {
                                    fwrite($wpa_file, "\tpriority=".$network['priority'].PHP_EOL);
                                }
                                fwrite($wpa_file, $line.PHP_EOL);
                            } else {
                                fwrite($wpa_file, $line.PHP_EOL);
                            }
                        }
                    } else {
                        $status->addMessage('WPA passphrase must be between 8 and 63 characters', 'danger');
                        $ok = false;
                    }
                }
            }

            if ($ok) {
                system('sudo cp /tmp/wifidata ' . RASPI_WPA_SUPPLICANT_CONFIG, $returnval);
                if ($returnval == 0) {
                    exec('sudo wpa_cli -i ' . RASPI_WIFI_CLIENT_INTERFACE . ' reconfigure', $reconfigure_out, $reconfigure_return);
                    if ($reconfigure_return == 0) {
                        $status->addMessage('Wifi settings updated successfully', 'success');
                        $networks = $tmp_networks;
                    } else {
                        $status->addMessage('Wifi settings updated but cannot restart (cannot execute "wpa_cli reconfigure")', 'danger');
                    }
                } else {
                    $status->addMessage('Wifi settings failed to be updated', 'danger');
                }
            }
        } else {
            $status->addMessage('Failed to update wifi settings', 'danger');
        }
    }

    nearbyWifiStations($networks);
    connectedWifiStations($networks);

?>

  <div class="row">
    <div class="col-lg-12">
      <div class="panel panel-primary"> 
        <div class="panel-heading"><i class="fa fa-signal fa-fw"></i> <?php echo _("Configure client"); ?></div>
        <!-- /.panel-heading -->
        <div class="panel-body">
          <p><?php $status->showMessages(); ?></p>
          <h4><?php echo _("Client settings"); ?></h4>
              <div class="btn-group btn-block">
              <button type="button" style="padding:10px;float: right;display: block;position: relative;margin-top: -55px;" class="col-md-2 btn btn-info js-reload-wifi-stations"><?php echo _("Rescan"); ?></button>
            </div> 

            <form method="POST" action="?page=wpa_conf" name="wpa_conf_form" class="row">
                <?php echo CSRFTokenFieldTag() ?>
              <input type="hidden" name="client_settings" ?>
              <script>
                function showPassword(index) {
                    var x = document.getElementsByName("passphrase"+index)[0];
                    if (x.type === "password") {
                        x.type = "text";
                    } else {
                        x.type = "password";
                    }
                }
              </script>

              <div class="js-wifi-stations loading-spinner"></div>

          </form>
        </div><!-- ./ Panel body -->
    <div class="panel-footer"><?php echo _("<strong>Note:</strong> WEP access points appear as 'Open'. RaspAP does not currently support connecting to WEP"); ?></div>
      </div><!-- /.panel-primary -->
    </div><!-- /.col-lg-12 -->
  </div><!-- /.row -->
<?php
}

?>