Don’t allow duplicate friendly_name. #1876

lib/util/settings.js

@@ -262,6 +262,16 @@ function write() {
 function validate() {
     const validate = ajv.compile(schema);
     const valid = validate(_settings);
+
+    // Verify that all friendly names are unique
+    const names = [];
+    const check = (name) => {
+        if (names.includes(name)) throw new Error(`Duplicate friendly_name '${name}' found`);
+        names.push(name);
+    };
+    Object.values(_settingsWithDefaults.devices).forEach((d) => check(d.friendly_name));
+    Object.values(_settingsWithDefaults.groups).forEach((g) => check(g.friendly_name));
+
     return !valid ? validate.errors.map((v) => `${v.dataPath.substring(1)} ${v.message}`) : null;
 }
 
@@ -444,8 +454,8 @@ function removeDevice(IDorName) {
 }
 
 function addGroup(name) {
-    if (getGroup(name)) {
-        throw new Error(`Group '${name}' already exists`);
+    if (getGroup(name) || getDevice(name)) {
+        throw new Error(`friendly_name '${name}' is already in use`);
     }
 
     const settings = get();
@@ -524,6 +534,10 @@ function changeDeviceOptions(IDorName, newOptions) {
 }
 
 function changeFriendlyName(IDorName, newName) {
+    if (getGroup(newName) || getDevice(newName)) {
+        throw new Error(`friendly_name '${newName}' is already in use`);
+    }
+
     const device = getDeviceThrowIfNotExists(IDorName);
     const settings = get();
     settings.devices[device.ID].friendly_name = newName;