wled · netmindz · Jun 17, 2025 · Jun 17, 2025 · Jun 17, 2025 · Jun 22, 2025
diff --git a/usermods/genPresets/library.json b/usermods/genPresets/library.json
@@ -0,0 +1,5 @@
+{
+  "name": "genPresets",
+  "build": { "libArchive": false },
+  "dependencies": {}
+}
diff --git a/usermods/genPresets/usermod_genPresets.cpp b/usermods/genPresets/usermod_genPresets.cpp
@@ -0,0 +1,208 @@
+#include "wled.h"
+
+/*
+ * genPresets usermod
+ *
+ * Serves a self-contained page at /genpresets that auto-generates a
+ * presets.json covering every installed effect with sensible defaults,
+ * plus playlists grouped by dimensionality.
+ *
+ * A link to the page is added to the Info tab in the main UI.
+ */
+
+// The HTML page is stored in flash to save RAM.
+static const char genPresets_html[] PROGMEM = R"=====(
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width,initial-scale=1">
+<title>Generate Presets - WLED</title>
+<style>
+  body{font-family:sans-serif;background:#1a1a2e;color:#eee;margin:0;padding:1em;}
+  h1{color:#c8a0ff;margin-top:0;}
+  button{background:#4a3080;color:#fff;border:none;border-radius:6px;padding:.6em 1.2em;cursor:pointer;font-size:1em;margin:.3em .3em .3em 0;}
+  button:hover{background:#6a50a0;}
+  button:disabled{opacity:.4;cursor:not-allowed;}
+  textarea{width:100%;box-sizing:border-box;background:#111;color:#8f8;font-family:monospace;font-size:.85em;border:1px solid #444;border-radius:4px;padding:.5em;margin-top:.8em;}
+  #status{margin:.5em 0;min-height:1.4em;color:#fa0;}
+  a{color:#a080ff;}
+</style>
+</head>
+<body>
+<h1>Generate Presets</h1>
+<p>Generates a complete <code>presets.json</code> with one preset per effect and playlists
+grouped by dimensionality. <strong>This will overwrite your current presets.</strong></p>
+<p><a href="/">&larr; Back to WLED</a></p>
+<button id="btnGen" onclick="generate()">Generate presets</button>
+<button id="btnSave" onclick="savePresets()" disabled>Save to device</button>
+<div id="status"></div>
+<textarea id="out" rows="20" placeholder="Generated JSON will appear here..." readonly></textarea>
+<script>
+var generated = '';
+
+function setStatus(msg, err) {
+  var el = document.getElementById('status');
+  el.textContent = msg;
+  el.style.color = err ? '#f66' : '#fa0';
+}
+
+async function generate() {
+  document.getElementById('btnGen').disabled = true;
+  document.getElementById('btnSave').disabled = true;
+  document.getElementById('out').value = '';
+  generated = '';
+  setStatus('Fetching effect list...');
+
+  var jsonResp, fxdataResp;
+  try {
+    [jsonResp, fxdataResp] = await Promise.all([
+      fetch('/json').then(function(r){ return r.json(); }),
+      fetch('/json/fxdata').then(function(r){ return r.json(); })
+    ]);
+  } catch(e) {
+    setStatus('Fetch failed: ' + e, true);
+    document.getElementById('btnGen').disabled = false;
+    return;
+  }
+
+  var effects = jsonResp.effects || [];
+  // /json/effects gives names only; build id-indexed array
+  // /json gives { effects: ["name0","name1",...] } where index == id
+  var fxdata = fxdataResp; // array indexed by fx id
+
+  var result = '';
+  var sep = '{';
+  var playlistData = {};
+  var seq = 230;
+
+  function addToPlaylist(m, id, ql) {
+    if (!playlistData[m]) playlistData[m] = { ps:[], dur:[], trans:[], ql:undefined };
+    playlistData[m].ps.push(id);
+    playlistData[m].dur.push(300);
+    playlistData[m].trans.push(0);
+    if (ql) playlistData[m].ql = ql;
+  }
+
+  setStatus('Generating...');
+
+  for (var id = 0; id < effects.length; id++) {
+    var name = effects[id];
+    if (name.indexOf('RSVD') >= 0) continue;
+    if (!Array.isArray(fxdata) || fxdata.length <= id) continue;
+
+    var fd = fxdata[id];
+    var eP = (fd === '') ? [] : fd.split(';');
+    var m = (eP.length < 4 || eP[3] === '') ? '1' : eP[3];
+
+    var defaultString = '';
+    if (eP.length > 4) {
+      var defs = (eP[4] === '') ? [] : eP[4].split(',');
+      for (var di = 0; di < defs.length; di++) {
+        var d = defs[di];
+        if (!d) continue;
+        var kv = d.split('=');
+        defaultString += ',"' + kv[0] + '":' + kv[1];
+      }
+    }
+
+    var stdDefaults = [
+      ['sx',128],['ix',128],['c1',128],['c2',128],['c3',16],
+      ['o1',0],['o2',0],['o3',0],['pal',11]
+    ];
+    for (var si = 0; si < stdDefaults.length; si++) {
+      var k = stdDefaults[si][0], v = stdDefaults[si][1];
+      if (defaultString.indexOf(k) < 0) defaultString += ',"' + k + '":' + v;
+    }
+
+    if (defaultString.indexOf('m12') < 0 && m.indexOf('1') >= 0 && m.indexOf('1.5') < 0 && m.indexOf('12') < 0) {
+      defaultString += ',"rev":true,"mi":true,"rY":true,"mY":true,"m12":2';
+    } else {
+      var mirrorKeys = ['rev','mi','rY','mY'];
+      for (var mi2 = 0; mi2 < mirrorKeys.length; mi2++) {
+        if (defaultString.indexOf(mirrorKeys[mi2]) < 0)
+          defaultString += ',"' + mirrorKeys[mi2] + '":false';
+      }
+    }
+
+    result += sep + '"' + id + '":{"n":"' + name.replace(/"/g,'\\"') + '","mainseg":0,"seg":[{"id":0,"fx":' + id + defaultString + '}]}';
+    sep = '\n,';
+
+    if (m.length <= 3) addToPlaylist(m, id, m);
+    else addToPlaylist(m, id);
+    addToPlaylist('All', id, 'ALL');
+    if (name.indexOf('Y\uD83D\uDCA1') === 0) addToPlaylist('AnimARTrix', id, 'AM');
+    if (name.indexOf('PS ') === 0) addToPlaylist('Particle System', id, 'PS');
+    if (m.indexOf('1') >= 0) addToPlaylist('All 1D', id, '1D');
+    if (m.indexOf('2') >= 0) addToPlaylist('All 2D', id, '2D');
+
+    seq = Math.max(seq, id + 1);
+  }
+
+  for (var pm in playlistData) {
+    var pl = playlistData[pm];
+    var ql = pl.ql || seq;
+    result += '\n,"' + seq + '":{"n":"' + pm + ' Playlist","ql":"' + ql + '","on":true,"playlist":{"ps":[' + pl.ps.join() + '],"dur":[' + pl.dur.join() + '],"transition":[' + pl.trans.join() + '],"repeat":0,"end":0,"r":1}}';
+    seq++;
+  }
+
+  result += '}';
+
+  generated = result;
+  document.getElementById('out').value = result;
+  document.getElementById('btnSave').disabled = false;
+  document.getElementById('btnGen').disabled = false;
+  setStatus('Done. Review the JSON below, then click "Save to device" to apply.');
+}
+
+async function savePresets() {
+  if (!generated) return;
+  if (!confirm('Overwrite presets.json on the device?')) return;
+
+  document.getElementById('btnSave').disabled = true;
+  setStatus('Uploading...');
+
+  var blob = new Blob([generated], {type:'application/text'});
+  var file = new File([blob], '/presets.json');
+  var form = new FormData();
+  form.append('upload', file);
+
+  try {
+    var resp = await fetch('/upload', {method:'POST', body:form});
+    var txt = await resp.text();
+    setStatus(resp.ok ? 'Saved! ' + txt : 'Error: ' + txt, !resp.ok);
+  } catch(e) {
+    setStatus('Upload failed: ' + e, true);
+  }
+  document.getElementById('btnSave').disabled = false;
+}
+</script>
+</body>
+</html>
+)=====";
+
+
+class GenPresetsUsermod : public Usermod {
+  public:
+
+    void setup() override {
+      server.on("/genpresets", HTTP_GET, [](AsyncWebServerRequest *request) {
+        request->send_P(200, "text/html", genPresets_html);
+      });
+    }
+
+    void loop() override {}
+
+    void addToJsonInfo(JsonObject& root) override {
+      JsonObject user = root["u"];
+      if (user.isNull()) user = root.createNestedObject("u");
+
+      JsonArray arr = user.createNestedArray(F(""));
+      arr.add(F("<a class=\"btn sml\" href=\"/genpresets\" target=\"_blank\">Generate Presets</a>"));
+    }
+
+    uint16_t getId() override { return USERMOD_ID_UNSPECIFIED; }
+};
+
+static GenPresetsUsermod genPresets_instance;
+REGISTER_USERMOD(genPresets_instance);