From dbbae1ec7b24da7ec9bbad0f789fd57e1cb751e8 Mon Sep 17 00:00:00 2001
From: BlueFox <bluefox@privacynerd.de>
Date: Tue, 26 Mar 2024 10:53:24 +0100
Subject: [PATCH] Added simpledemo; needs to be refactored as it's just copied
 from the C source of the NetSpeaker project; from
 https://git.privacynerd.de/NetSpeaker/NetSpeaker/src/commit/bedbc33f48ff28fd2e7ca4a408081b384cfcb612

---
 simpledemo.html | 327 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 327 insertions(+)
 create mode 100644 simpledemo.html
diff --git a/simpledemo.html b/simpledemo.html
new file mode 100644
index 0000000..efc17dd
--- /dev/null
+++ b/simpledemo.html
@@ -0,0 +1,327 @@
+  String html = "<!doctype html>";
+  html += "<html><head>";
+  html += "<meta charset='utf-8'><meta name='viewport' content='width=device-width,initial-scale=1'>";
+  html += "<title>Web UI | " + version + "</title>";
+  html += "<link href='https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css' rel='stylesheet' integrity='sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN' crossorigin='anonymous'>";
+  html += "<style>#playbackMuteButton:hover { background-color: #00000000;  }</style>";
+  html += "</head><body data-bs-theme='dark'>";
+  html += "<div class='text-center container-sm' style='padding: 4em 0em'>";
+
+  html += "<p>Welcome to</p>";
+  html += "<h1>" + configuration.getString(PREFERENCES_KEY_FRIENDLY_NAME, "NetSpeaker") + "</h1>";
+  html += "<p style='font-size: .875em; color: var(--bs-code-color); padding-top: .5rem'>" + version + "</p>";
+
+  html += "<hr style='margin: 3em 0em;'>";
+
+  // informations accordion
+  html += "<div class='accordion text-start' id='accordion-info'>";
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-info-playback' aria-expanded='true' aria-controls='accordion-info-playback'>";
+  html += "        Playback information";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-info-playback' class='accordion-collapse collapse' data-bs-parent='#accordion-info'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <table class='table table-striped'><tbody><tr>";
+  html += "              <td>Playing</td>";
+  html += "              <td class='text-end'>";
+  html +=                  audioPlaying ? "yes" : "no";
+  html += "              </td>";
+  html += "            </tr><tr>";
+  html += "              <td>Volume</td>";
+  html += "              <td class='text-end'>" + String(currentVolume) + "/" + String(maxVolume) + "%</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Muted</td>";
+  html += "              <td class='text-end'>";
+  html +=                  muted ? "yes" : "no";
+  html += "              </td>";
+  html += "            </tr><tr>";
+  html += "              <td>Equalizer Low</td>";
+  html += "              <td class='text-end'>" + String(eqLow) + "dB</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Equalizer Mid</td>";
+  html += "              <td class='text-end'>" + String(eqMid) + "dB</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Equalizer High</td>";
+  html += "              <td class='text-end'>" + String(eqHigh) + "dB</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Balance (range -16 | +16)</td>";
+  html += "              <td class='text-end'>" + String(balanceLevel) + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Path to playlist</td>";
+  html += "              <td class='text-end'>" + currentPlaylist + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Index in playlist (starting from 0)</td>";
+  html += "              <td class='text-end'>" + String(currentPlaylistPosition) + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource path</td>";
+  html += "              <td class='text-end'>" + pbInfo.resourcePath + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource type</td>";
+  html += "              <td class='text-end'>" + pbInfo.type + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource title</td>";
+  html += "              <td class='text-end'>" + pbInfo.title + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource album</td>";
+  html += "              <td class='text-end'>" + pbInfo.album + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource artist</td>";
+  html += "              <td class='text-end'>" + pbInfo.artist + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource track number</td>";
+  html += "              <td class='text-end'>" + pbInfo.track + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource year</td>";
+  html += "              <td class='text-end'>" + pbInfo.year + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Resource genre</td>";
+  html += "              <td class='text-end'>" + pbInfo.genre + "</td>";
+  html += "        </tr></tbody></table>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";  
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-info-general' aria-expanded='true' aria-controls='accordion-info-general'>";
+  html += "        General information";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-info-general' class='accordion-collapse collapse' data-bs-parent='#accordion-info'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <table class='table table-striped'><tbody><tr>";
+  html += "              <td>Version</td>";
+  html += "              <td class='text-end'>" + version + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Friendly name</td>";
+  html += "              <td class='text-end'>" + configuration.getString(PREFERENCES_KEY_FRIENDLY_NAME, "<not_given>") + "</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Save & Restore state</td>";
+  html += "              <td class='text-end'>";
+  html +=                  configuration.getBool(PREFERENCES_KEY_RESTORE_OLD_STATE, false) ? "yes" : "no";
+  html += "              </td>";
+  html += "            </tr><tr>";
+  html += "              <td>Save & Restore playing state (default no)</td>";
+  html += "              <td class='text-end'>";
+  html +=                  configuration.getBool(PREFERENCES_KEY_RESTORE_PLAYING, false) ? "yes" : "no";
+  html += "              </td>";
+  html += "            </tr><tr>";
+  html += "              <td>WiFi SSID</td>";
+  html += "              <td class='text-end'>" + configuration.getString(PREFERENCES_KEY_WIFI_SSID, "") + "</td>";
+  html += "        </tr></tbody></table>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+  html += "</div>";
+
+  html += "<hr style='margin: 3em 0em;'>";
+
+  /* ---------------------------- 
+  --  API FUNCTIONS ACCODRION  --
+  ---------------------------- */
+  html += "<div class='accordion text-start' id='accordion'>";
+  // PLAYBACK Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-playback' aria-expanded='true' aria-controls='accordion-collapse-playback'>";
+  html += "        Playback";
+  html += "        &nbsp;<span class='badge text-bg-success'>/api/v1/playback/</span>";
+  html += "        &nbsp;<span class='badge text-bg-info'>/api/v1/volume/</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-playback' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <table class='table table-striped'><tbody><tr>";
+  html += "              <td>Playing</td>";
+  html += "              <td class='text-end' id='playbackTable_audioPlayingValue'>";
+  html +=                  audioPlaying ? "yes" : "no";
+  html += "              </td>";
+  html += "            </tr><tr>";
+  html += "              <td>Volume</td>";
+  html += "              <td class='text-end' id='playbackTable_volumeValue'>" + String(currentVolume) + "/" + String(maxVolume) + "%</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Muted</td>";
+  html += "              <td class='text-end' id='playbackTable_mutedValue'>";
+  html +=                  muted ? "yes" : "no";
+  html += "              </td>";
+  html += "        </tr></tbody></table>";
+  html += "        <hr><div class='btn-group' role='group' aria-label='Basic playback option (play, pause, next, previous)'>";
+  html += "          <button type='button' class='btn btn-secondary'  onclick=\"http = new XMLHttpRequest();http.open('GET', '/api/v1/playback/previous');http.send();\">";
+  html += "            <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-rewind-circle' viewBox='0 0 16 16'>";
+  html += "              <path d='M7.729 5.055a.5.5 0 0 0-.52.038l-3.5 2.5a.5.5 0 0 0 0 .814l3.5 2.5A.5.5 0 0 0 8 10.5V8.614l3.21 2.293A.5.5 0 0 0 12 10.5v-5a.5.5 0 0 0-.79-.407L8 7.386V5.5a.5.5 0 0 0-.271-.445'/>";
+  html += "              <path d='M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0M1 8a7 7 0 1 0 14 0A7 7 0 0 0 1 8'/>";
+  html += "            </svg>";
+  html += "          </button>";
+  html += "          <button type='button' class='btn btn-success'  onclick=\"http = new XMLHttpRequest();http.open('GET', '/api/v1/playback/play');http.send();document.getElementById('playbackTable_audioPlayingValue').innerHTML = 'yes';\">";
+  html += "            <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-play-circle' viewBox='0 0 16 16'>";
+  html += "              <path d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14m0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16'></path>";
+  html += "              <path d='M6.271 5.055a.5.5 0 0 1 .52.038l3.5 2.5a.5.5 0 0 1 0 .814l-3.5 2.5A.5.5 0 0 1 6 10.5v-5a.5.5 0 0 1 .271-.445'></path>";
+  html += "            </svg>";
+  html += "          </button>";
+  html += "          <button type='button' class='btn btn-success'  onclick=\"http = new XMLHttpRequest();http.open('GET', '/api/v1/playback/pause');http.send();document.getElementById('playbackTable_audioPlayingValue').innerHTML = 'no';\">";
+  html += "            <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-pause-circle' viewBox='0 0 16 16'>";
+  html += "              <path d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14m0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16'/>";
+  html += "              <path d='M5 6.25a1.25 1.25 0 1 1 2.5 0v3.5a1.25 1.25 0 1 1-2.5 0zm3.5 0a1.25 1.25 0 1 1 2.5 0v3.5a1.25 1.25 0 1 1-2.5 0z'/>";
+  html += "            </svg>";
+  html += "          </button>";
+  html += "          <button type='button' class='btn btn-secondary' onclick=\"http = new XMLHttpRequest();http.open('GET', '/api/v1/playback/next');http.send();\">";
+  html += "            <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-skip-forward-circle' viewBox='0 0 16 16'>";
+  html += "              <path d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14m0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16'/>";
+  html += "              <path d='M4.271 5.055a.5.5 0 0 1 .52.038L7.5 7.028V5.5a.5.5 0 0 1 .79-.407L11 7.028V5.5a.5.5 0 0 1 1 0v5a.5.5 0 0 1-1 0V8.972l-2.71 1.935a.5.5 0 0 1-.79-.407V8.972l-2.71 1.935A.5.5 0 0 1 4 10.5v-5a.5.5 0 0 1 .271-.445'/>";
+  html += "            </svg>";
+  html += "          </button>";
+  html += "        </div>";
+  html += "        <br><hr><br><label for='volumeRange' class='form-label'>Volume</label>";
+  html += "        <input type='range' class='form-range' value='" + String(currentVolume) + "' min='0' max='" + String(maxVolume) + "' id='volumeRange' onchange='value = document.getElementById(\"volumeRange\").value; http = new XMLHttpRequest();http.open(\"GET\", \"/api/v1/volume/\" + value);http.send();document.getElementById(\"playbackTable_volumeValue\").innerHTML = value + \"/" + String(maxVolume) + "%\"'>";
+  html += "        <button type='button' id='playbackMuteButton' onclick=";
+  html += "                                                        \"http = new XMLHttpRequest();";
+  html += "                                                        http.open('GET', '/api/v1/volume/toggle_mute');";
+  html += "                                                        http.send(); button = document.getElementById('playbackMuteButton');";
+  html += "                                                        button.classList.contains('btn-outline-danger') ? button.className = 'btn btn-danger' : button.className = 'btn btn-outline-danger';";
+  html += "                                                        mutedValueHTML = document.getElementById('playbackTable_mutedValue');";
+  html += "                                                        button.classList.contains('btn-outline-danger') ? mutedValueHTML.innerHTML = 'no' : mutedValueHTML.innerHTML = 'yes'\" class='btn ";
+  html += muted ? "btn-danger'>" : "btn-outline-danger'>";
+  html += "          <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-volume-mute' viewBox='0 0 16 16'>";
+  html += "            <path d='M6.717 3.55A.5.5 0 0 1 7 4v8a.5.5 0 0 1-.812.39L3.825 10.5H1.5A.5.5 0 0 1 1 10V6a.5.5 0 0 1 .5-.5h2.325l2.363-1.89a.5.5 0 0 1 .529-.06zM6 5.04 4.312 6.39A.5.5 0 0 1 4 6.5H2v3h2a.5.5 0 0 1 .312.11L6 10.96zm7.854.606a.5.5 0 0 1 0 .708L12.207 8l1.647 1.646a.5.5 0 0 1-.708.708L11.5 8.707l-1.646 1.647a.5.5 0 0 1-.708-.708L10.793 8 9.146 6.354a.5.5 0 1 1 .708-.708L11.5 7.293l1.646-1.647a.5.5 0 0 1 .708 0z'></path>";
+  html += "          </svg> Mute/Unmute</button>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // PLAYLIST Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-playlist' aria-expanded='true' aria-controls='accordion-collapse-playlist'>";
+  html += "        Playlist";
+  html += "        &nbsp;<span class='badge text-bg-success'>/api/v1/playlist/</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-playlist' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <strong>Work in progress</strong>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // BALANCE Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-balance' aria-expanded='true' aria-controls='accordion-collapse-balance'>";
+  html += "        Balance";
+  html += "        &nbsp;<span class='badge text-bg-info'>/api/v1/balance/</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-balance' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <p>The Audio library used maps -16 to most right and 16 to most left. Don't be confused by the appearently wrong direction the slider moves the balance to right and left.</p>";
+  html += "        <table class='table table-striped'><tbody><tr>";
+  html += "              <td>Balance (range -16 | +16)</td>";
+  html += "              <td class='text-end' id='balanceChangeTable_balanceValue'>" + String(balanceLevel) + "</td>";
+  html += "        </tr></tbody></table>";
+  html += "        <br><hr><label for='balanceRange' class='form-label'>Balance (-16 to 16)</label>";
+  html += "        <input type='range' class='form-range' value='" + String(balanceLevel+16) + "' min='0' max='32' id='balanceRange' onchange='value = document.getElementById(\"balanceRange\").value; http = new XMLHttpRequest();http.open(\"GET\", \"/api/v1/balance/\" + value);http.send(); document.getElementById(\"balanceChangeTable_balanceValue\").innerHTML = value-16;'>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // EQUALIZER Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-eq' aria-expanded='true' aria-controls='accordion-collapse-eq'>";
+  html += "        Equalizer";
+  html += "        &nbsp;<span class='badge text-bg-info'>/api/v1/eq/</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-eq' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <table class='table table-striped'><tbody><tr>";
+  html += "              <td>Equalizer Low (-40dB to 6dB)</td>";
+  html += "              <td class='text-end' id='eqChangeTable_eqLowValue'>" + String(eqLow) + "dB</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Equalizer Mid (-40dB to 6dB)</td>";
+  html += "              <td class='text-end' id='eqChangeTable_eqMidValue'>" + String(eqMid) + "dB</td>";
+  html += "            </tr><tr>";
+  html += "              <td>Equalizer High (-40dB to 6dB)</td>";
+  html += "              <td class='text-end' id='eqChangeTable_eqHighValue'>" + String(eqHigh) + "dB</td>";
+  html += "        </tr></tbody></table>";
+  html += "        <br><hr><label for='eqLowRange' class='form-label'>Equalizer for lows (-40dB to 6dB)</label>";
+  html += "        <input type='range' class='form-range' value='" + String(eqLow+40) + "' min='0' max='46' id='eqLowRange' onchange='value = document.getElementById(\"eqLowRange\").value; http = new XMLHttpRequest();http.open(\"GET\", \"/api/v1/eq/low/\" + value);http.send(); document.getElementById(\"eqChangeTable_eqLowValue\").innerHTML = value-40 + \"dB\";'>";
+  html += "        <br><hr><br><label for='eqMidRange' class='form-label'>Equalizer for mids (-40dB to 6dB)</label>";
+  html += "        <input type='range' class='form-range' value='" + String(eqMid+40) + "' min='0' max='46' id='eqMidRange' onchange='value = document.getElementById(\"eqMidRange\").value; http = new XMLHttpRequest();http.open(\"GET\", \"/api/v1/eq/mid/\" + value);http.send(); document.getElementById(\"eqChangeTable_eqMidValue\").innerHTML = value-40 + \"dB\";'>";
+  html += "        <br><hr><br><label for='eqHighRange' class='form-label'>Equalizer for highs (-40dB to 6dB)</label>";
+  html += "        <input type='range' class='form-range' value='" + String(eqHigh+40) + "' min='0' max='46' id='eqHighRange' onchange='value = document.getElementById(\"eqHighRange\").value; http = new XMLHttpRequest();http.open(\"GET\", \"/api/v1/eq/high/\" + value);http.send(); document.getElementById(\"eqChangeTable_eqHighValue\").innerHTML = value-40 + \"dB\";'>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // FRIENDLY NAME Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-frname' aria-expanded='true' aria-controls='accordion-collapse-frname'>";
+  html += "        Friendly name";
+  html += "        &nbsp;<span class='badge text-bg-warning'>/api/v1/system/name</span>";  // explicitly no trailing / as there are the two endpoints /name and /name/change
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-frname' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <strong>Work in progress</strong>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // WiFi CONFIGURATION Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-wifi' aria-expanded='true' aria-controls='accordion-collapse-wifi'>";
+  html += "        WiFi configuration";
+  html += "        &nbsp;<span class='badge text-bg-warning'>/api/v1/system/wifi/</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-wifi' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <strong>Work in progress</strong>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // SAVE AND RESTORE Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-restore' aria-expanded='true' aria-controls='accordion-collapse-restore'>";
+  html += "        Save & Restore";
+  html += "        &nbsp;<span class='badge text-bg-warning'>/api/v1/system/restore_state/</span>";
+  html += "        &nbsp;<span class='badge text-bg-warning'>/api/v1/system/restore_playing/</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-restore' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <strong>Work in progress</strong>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  // RESTART Collapsible
+  html += "  <div class='accordion-item'>";
+  html += "    <h2 class='accordion-header'>";
+  html += "      <button class='accordion-button collapsed' type='button' data-bs-toggle='collapse' data-bs-target='#accordion-collapse-restart' aria-expanded='true' aria-controls='accordion-collapse-restart'>";
+  html += "        Restart";
+  html += "        &nbsp;<span class='badge text-bg-danger'>/api/v1/system/restart</span>";
+  html += "      </button>";
+  html += "    </h2>";
+  html += "    <div id='accordion-collapse-restart' class='accordion-collapse collapse' data-bs-parent='#accordion'>";
+  html += "      <div class='accordion-body'>";
+  html += "        <button type='button' class='btn btn-danger' onclick=\"function wait(ms){var start = new Date().getTime();var end=start;while(end<start+ms){end = new Date().getTime();}}http = new XMLHttpRequest();http.open('GET', '/api/v1/system/restart');http.send();wait(3000);window.location.reload();\">";
+  html += "          <svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-bootstrap-reboot' viewBox='0 0 16 16'>";
+  html += "            <path d='M1.161 8a6.84 6.84 0 1 0 6.842-6.84.58.58 0 1 1 0-1.16 8 8 0 1 1-6.556 3.412l-.663-.577a.58.58 0 0 1 .227-.997l2.52-.69a.58.58 0 0 1 .728.633l-.332 2.592a.58.58 0 0 1-.956.364l-.643-.56A6.812 6.812 0 0 0 1.16 8z'></path>";
+  html += "            <path d='M6.641 11.671V8.843h1.57l1.498 2.828h1.314L9.377 8.665c.897-.3 1.427-1.106 1.427-2.1 0-1.37-.943-2.246-2.456-2.246H5.5v7.352zm0-3.75V5.277h1.57c.881 0 1.416.499 1.416 1.32 0 .84-.504 1.324-1.386 1.324h-1.6z'></path>";
+  html += "          </svg> Restart";
+  html += "        </button>";
+  html += "      </div>";
+  html += "    </div>";
+  html += "  </div>";
+
+  html += "</div></div>";
+  html += "<script src='https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js' integrity='sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL' crossorigin='anonymous'></script>";
+  html += "</body></html>";
+

Playing	"; + html += audioPlaying ? "yes" : "no"; + html += "
Volume	" + String(currentVolume) + "/" + String(maxVolume) + "%
Muted	"; + html += muted ? "yes" : "no"; + html += "
Equalizer Low	" + String(eqLow) + "dB
Equalizer Mid	" + String(eqMid) + "dB
Equalizer High	" + String(eqHigh) + "dB
Balance (range -16 \| +16)	" + String(balanceLevel) + "
Path to playlist	" + currentPlaylist + "
Index in playlist (starting from 0)	" + String(currentPlaylistPosition) + "
Resource path	" + pbInfo.resourcePath + "
Resource type	" + pbInfo.type + "
Resource title	" + pbInfo.title + "
Resource album	" + pbInfo.album + "
Resource artist	" + pbInfo.artist + "
Resource track number	" + pbInfo.track + "
Resource year	" + pbInfo.year + "
Resource genre	" + pbInfo.genre + "
Version	" + version + "
Friendly name	" + configuration.getString(PREFERENCES_KEY_FRIENDLY_NAME, "") + "
Save & Restore state	"; + html += configuration.getBool(PREFERENCES_KEY_RESTORE_OLD_STATE, false) ? "yes" : "no"; + html += "
Save & Restore playing state (default no)	"; + html += configuration.getBool(PREFERENCES_KEY_RESTORE_PLAYING, false) ? "yes" : "no"; + html += "
WiFi SSID	" + configuration.getString(PREFERENCES_KEY_WIFI_SSID, "") + "
Equalizer Low (-40dB to 6dB)	" + String(eqLow) + "dB
Equalizer Mid (-40dB to 6dB)	" + String(eqMid) + "dB
Equalizer High (-40dB to 6dB)	" + String(eqHigh) + "dB