UI: better API errors (evcc-io#11602)

assets/js/api.js

@@ -15,10 +15,14 @@ const api = axios.create({
 api.interceptors.response.use(
   (response) => response,
   (error) => {
-    let message = error.message;
+    const message = [`${error.message}.`];
+    if (error.response?.data?.error) {
+      message.push(`${error.response.data.error}.`);
+    }
     if (error.config) {
+      const method = error.config.method.toUpperCase();
       const url = error.config.baseURL + error.config.url;
-      message += `: API request failed ${url}`;
+      message.push(`${method} ${url}`);
     }
     window.app.raise({ message });
     return Promise.reject(error);

assets/js/components/Notifications.vue

@@ -51,7 +51,13 @@
 									class="flex-grow-0 flex-shrink-0 d-block"
 								></shopicon-regular-exclamationtriangle>
 								<span class="flex-grow-1 px-2 py-1 text-break">
-									{{ message(msg) }}
+									<span
+										v-for="(line, idx) in message(msg)"
+										:key="idx"
+										class="d-block"
+									>
+										{{ line }}
+									</span>
 								</span>
 								<span v-if="msg.count > 1" class="badge rounded-pill bg-secondary">
 									{{ msg.count }}
@@ -107,11 +113,12 @@ export default {
 	},
 	methods: {
 		message({ message, lp }) {
-			let context = "";
+			const lines = Array.isArray(message) ? message : [message];
 			if (lp) {
-				context = `${this.loadpointTitles[lp - 1] || lp}: `;
+				// add loadpoint title to first line
+				lines[0] = `${this.loadpointTitles[lp - 1] || lp}: ${lines[0]}`;
 			}
-			return `${context}${message}`;
+			return lines;
 		},
 		clear: function () {
 			window.app && window.app.clear();