Add internal user backup functionality to Security & Update page

.gitignore

@@ -23,3 +23,4 @@ wled-update.sh
 /wled00/Release
 /wled00/wled00.ino.cpp
 /wled00/html_*.h
+compile_commands.json

wled00/data/settings_sec.htm

@@ -17,6 +17,73 @@
 		function setBckFilename(x) {
 			x.setAttribute("download","wled_" + x.getAttribute("download") + (sd=="WLED"?"":("_" +sd)));
 		}
+		function userBackup(type) {
+			if (!confirm("Create internal backup for " + type + "? This will overwrite any existing backup.")) return;
+			var btn = gId("ubk" + type.charAt(0).toUpperCase() + type.slice(1));
+			btn.disabled = true;
+			btn.innerHTML = "Creating...";
+			var xhr = new XMLHttpRequest();
+			xhr.open('POST', getURL('/backup/' + type), true);
+			xhr.onreadystatechange = function() {
+				if (xhr.readyState === 4) {
+					btn.disabled = false;
+					btn.innerHTML = "Create " + type.charAt(0).toUpperCase() + type.slice(1) + " Backup";
+					if (xhr.status === 200) {
+						showToast(xhr.responseText, false);
+						updateBackupButtons();
+					} else {
+						showToast("Backup failed: " + xhr.responseText, true);
+					}
+				}
+			};
+			xhr.send();
+		}
+		function userRestore(type) {
+			var message = "Restore " + type + " from internal backup? This will overwrite current " + type + ".";
+			if (type === 'config') message += " Device will reboot after restore.";
+			if (!confirm(message)) return;
+			var btn = gId("ures" + type.charAt(0).toUpperCase() + type.slice(1));
+			btn.disabled = true;
+			btn.innerHTML = "Restoring...";
+			var xhr = new XMLHttpRequest();
+			xhr.open('POST', getURL('/restore/' + type), true);
+			xhr.onreadystatechange = function() {
+				if (xhr.readyState === 4) {
+					if (xhr.status === 200) {
+						showToast(xhr.responseText, false);
+						if (type === 'config') {
+							setTimeout(function() { window.location.href = "/"; }, 3000);
+						} else {
+							btn.disabled = false;
+							btn.innerHTML = "Restore " + type.charAt(0).toUpperCase() + type.slice(1);
+						}
+					} else {
+						btn.disabled = false;
+						btn.innerHTML = "Restore " + type.charAt(0).toUpperCase() + type.slice(1);
+						showToast("Restore failed: " + xhr.responseText, true);
+					}
+				}
+			};
+			xhr.send();
+		}
+		function updateBackupButtons() {
+			var xhr = new XMLHttpRequest();
+			xhr.open('GET', getURL('/backup/status'), true);
+			xhr.onreadystatechange = function() {
+				if (xhr.readyState === 4 && xhr.status === 200) {
+					try {
+						var status = JSON.parse(xhr.responseText);
+						gId("uresCfg").style.display = status.config ? "inline-block" : "none";
+						gId("uresPresets").style.display = status.presets ? "inline-block" : "none";
+						gId("uresPalettes").style.display = status.palettes ? "inline-block" : "none";
+						gId("uresMappings").style.display = status.mappings ? "inline-block" : "none";
+					} catch(e) {
+						console.error("Failed to parse backup status:", e);
+					}
+				}
+			};
+			xhr.send();
+		}
 		function S() {
 			getLoc();
 			if (loc) {
@@ -26,6 +93,7 @@
 			loadJS(getURL('/settings/s.js?p=6'), false, undefined, ()=>{
 				setBckFilename(gId("bckcfg"));
 				setBckFilename(gId("bckpresets"));
+				updateBackupButtons();
 			});	// If we set async false, file is loaded and executed, then next statement is processed
 			if (loc) d.Sf.action = getURL('/settings/sec');
 		}
@@ -70,6 +138,22 @@ <h3>Backup & Restore</h3>
 		<a class="btn lnk" id="bckpresets" href="/cfg.json" download="cfg">Backup configuration</a><br>
 		<div>Restore configuration<br><input type="file" name="data2" accept=".json"> <button type="button" onclick="uploadFile(d.Sf.data2,'/cfg.json');">Upload</button><br></div>
 		<hr>
+		<h3>Internal User Backup</h3>
+		<div class="warn">&#9888; Internal backups are stored on the device filesystem and will be lost if the device is reset or reflashed.<br>
+		User backups will OVERWRITE existing backups of the same type.</div>
+		<h4>Configuration</h4>
+		<button type="button" id="ubkCfg" onclick="userBackup('config')">Create Config Backup</button>
+		<button type="button" id="uresCfg" onclick="userRestore('config')" style="display:none;">Restore Config</button><br><br>
+		<h4>Presets</h4>
+		<button type="button" id="ubkPresets" onclick="userBackup('presets')">Create Presets Backup</button>
+		<button type="button" id="uresPresets" onclick="userRestore('presets')" style="display:none;">Restore Presets</button><br><br>
+		<h4>Custom Palettes</h4>
+		<button type="button" id="ubkPalettes" onclick="userBackup('palettes')">Create Palettes Backup</button>
+		<button type="button" id="uresPalettes" onclick="userRestore('palettes')" style="display:none;">Restore Palettes</button><br><br>
+		<h4>Custom Mappings</h4>
+		<button type="button" id="ubkMappings" onclick="userBackup('mappings')">Create Mappings Backup</button>
+		<button type="button" id="uresMappings" onclick="userRestore('mappings')" style="display:none;">Restore Mappings</button><br><br>
+		<hr>
 		<h3>About</h3>
 		<a href="https://github.com/wled-dev/WLED/" target="_blank">WLED</a>&#32;version ##VERSION##<!-- Autoreplaced from package.json --><br><br>
 		<a href="https://kno.wled.ge/about/contributors/" target="_blank">Contributors, dependencies and special thanks</a><br>

wled00/fcn_declare.h

@@ -103,6 +103,21 @@ inline bool readObjectFromFile(const String &file, const char* key, JsonDocument
 bool copyFile(const char* src_path, const char* dst_path);
 bool backupFile(const char* filename);
 bool restoreFile(const char* filename);
+bool userBackupFile(const char* filename);
+bool userRestoreFile(const char* filename);
+bool userBackupExists(const char* filename);
+bool userBackupConfig();
+bool userRestoreConfig();
+bool userBackupConfigExists();
+bool userBackupPresets();
+bool userRestorePresets();
+bool userBackupPresetsExists();
+int userBackupPalettes();
+int userRestorePalettes();
+bool userBackupPalettesExist();
+int userBackupMappings();
+int userRestoreMappings();
+bool userBackupMappingsExist();
 bool validateJsonFile(const char* filename);
 void dumpFilesToSerial();
 

wled00/file.cpp

@@ -516,6 +516,7 @@ bool compareFiles(const char* path1, const char* path2) {
 }
 
 static const char s_backup_fmt[] PROGMEM = "/bkp.%s";
+static const char s_user_backup_fmt[] PROGMEM = "/bku.%s";
 
 bool backupFile(const char* filename) {
   DEBUG_PRINTF("backup %s \n", filename);
@@ -572,6 +573,150 @@ bool validateJsonFile(const char* filename) {
   return result;
 }
 
+bool userBackupFile(const char* filename) {
+  DEBUG_PRINTF("user backup %s \n", filename);
+  if (!validateJsonFile(filename)) {
+    DEBUG_PRINTLN(F("broken file"));
+    return false;
+  }
+  char backupname[32];
+  snprintf_P(backupname, sizeof(backupname), s_user_backup_fmt, filename + 1); // skip leading '/' in filename
+
+  if (copyFile(filename, backupname)) {
+    DEBUG_PRINTLN(F("user backup ok"));
+    return true;
+  }
+  DEBUG_PRINTLN(F("user backup failed"));
+  return false;
+}
+
+bool userRestoreFile(const char* filename) {
+  DEBUG_PRINTF("user restore %s \n", filename);
+  char backupname[32];
+  snprintf_P(backupname, sizeof(backupname), s_user_backup_fmt, filename + 1); // skip leading '/' in filename
+
+  if (!WLED_FS.exists(backupname)) {
+    DEBUG_PRINTLN(F("no user backup found"));
+    return false;
+  }
+
+  if (!validateJsonFile(backupname)) {
+    DEBUG_PRINTLN(F("broken user backup"));
+    return false;
+  }
+
+  if (copyFile(backupname, filename)) {
+    DEBUG_PRINTLN(F("user restore ok"));
+    return true;
+  }
+  DEBUG_PRINTLN(F("user restore failed"));
+  return false;
+}
+
+bool userBackupExists(const char* filename) {
+  char backupname[32];
+  snprintf_P(backupname, sizeof(backupname), s_user_backup_fmt, filename + 1); // skip leading '/' in filename
+  return WLED_FS.exists(backupname);
+}
+
+// User backup functions for different file types
+bool userBackupConfig() {
+  return userBackupFile("/cfg.json");
+}
+
+bool userRestoreConfig() {
+  return userRestoreFile("/cfg.json");
+}
+
+bool userBackupConfigExists() {
+  return userBackupExists("/cfg.json");
+}
+
+bool userBackupPresets() {
+  return userBackupFile("/presets.json");
+}
+
+bool userRestorePresets() {
+  return userRestoreFile("/presets.json");
+}
+
+bool userBackupPresetsExists() {
+  return userBackupExists("/presets.json");
+}
+
+int userBackupPalettes() {
+  int count = 0;
+  for (int i = 0; i < 10; i++) {
+    char filename[32];
+    sprintf_P(filename, PSTR("/palette%d.json"), i);
+    if (WLED_FS.exists(filename)) {
+      if (userBackupFile(filename)) count++;
+    }
+  }
+  return count;
+}
+
+int userRestorePalettes() {
+  int count = 0;
+  for (int i = 0; i < 10; i++) {
+    char filename[32];
+    sprintf_P(filename, PSTR("/palette%d.json"), i);
+    if (userRestoreFile(filename)) count++;
+  }
+  return count;
+}
+
+bool userBackupPalettesExist() {
+  for (int i = 0; i < 10; i++) {
+    char filename[32];
+    sprintf_P(filename, PSTR("/palette%d.json"), i);
+    if (userBackupExists(filename)) return true;
+  }
+  return false;
+}
+
+int userBackupMappings() {
+  int count = 0;
+  // Backup ledmap files
+  for (int i = 1; i < WLED_MAX_LEDMAPS; i++) {
+    char filename[32];
+    sprintf_P(filename, PSTR("/ledmap%d.json"), i);
+    if (WLED_FS.exists(filename)) {
+      if (userBackupFile(filename)) count++;
+    }
+  }
+  // Backup 2D gaps file if it exists
+  if (WLED_FS.exists("/2d-gaps.json")) {
+    if (userBackupFile("/2d-gaps.json")) count++;
+  }
+  return count;
+}
+
+int userRestoreMappings() {
+  int count = 0;
+  // Restore ledmap files
+  for (int i = 1; i < WLED_MAX_LEDMAPS; i++) {
+    char filename[32];
+    sprintf_P(filename, PSTR("/ledmap%d.json"), i);
+    if (userRestoreFile(filename)) count++;
+  }
+  // Restore 2D gaps file if backup exists
+  if (userRestoreFile("/2d-gaps.json")) count++;
+  return count;
+}
+
+bool userBackupMappingsExist() {
+  // Check ledmap files
+  for (int i = 1; i < WLED_MAX_LEDMAPS; i++) {
+    char filename[32];
+    sprintf_P(filename, PSTR("/ledmap%d.json"), i);
+    if (userBackupExists(filename)) return true;
+  }
+  // Check 2D gaps file
+  if (userBackupExists("/2d-gaps.json")) return true;
+  return false;
+}
+
 // print contents of all files in root dir to Serial except wsec files
 void dumpFilesToSerial() {
   File rootdir = WLED_FS.open("/", "r");