configure devServer & add WebSocket connection at api call

app/src/helpers/api.js

@@ -103,6 +103,25 @@ export default {
     }
   },
 
+  /**
+   * Opens a WebSocket connection to the server in case it sends messages.
+   * Currently, the connection is closed by the server right after an API call so
+   * we have to open it for every calls.
+   * Messages are dispatch to the store so it can handle them.
+   *
+   * @return {Promise<Event>} Promise that resolve on websocket 'open' or 'error' event.
+   */
+  openWebSocket () {
+    return new Promise(resolve => {
+      const ws = new WebSocket(`wss://${store.getters.host}/yunohost/api/messages`)
+      ws.onmessage = ({ data }) => store.dispatch('DISPATCH_MESSAGE', JSON.parse(data))
+      // ws.onclose = (e) => {}
+      ws.onopen = resolve
+      // Resolve also on error so the actual fetch may be called.
+      ws.onerror = resolve
+    })
+  },
+
   /**
    * Generic method to fetch the api without automatic response handling.
    *
@@ -111,12 +130,16 @@ export default {
    * @param {string} [data={}] - data to send as body for 'POST', 'PUT' and 'DELETE' methods.
    * @return {Promise<Response>} Promise that resolve a fetch `Response`.
    */
-  fetch (method, uri, data = {}) {
+  async fetch (method, uri, data = {}) {
+    // Open a websocket connection that will dispatch messages received.
+    // FIXME add ability to do not open it
+    await this.openWebSocket()
+
     if (method === 'GET') {
       const localeQs = `${uri.includes('?') ? '&' : '?'}locale=${store.getters.locale}`
-      return fetch('/api/' + uri + localeQs, this.options)
+      return fetch('/yunohost/api/' + uri + localeQs, this.options)
     }
-    return fetch('/api/' + uri, {
+    return fetch('/yunohost/api/' + uri, {
       ...this.options,
       method,
       body: objectToParams(data, { addLocale: true })

app/src/store/info.js

@@ -5,7 +5,8 @@ export default {
   state: {
     connected: localStorage.getItem('connected') === 'true',
     yunohost: null, // yunohost app infos: Object {version, repo}
-    waiting: false
+    waiting: false,
+    host: window.location.host
   },
 
   mutations: {
@@ -77,12 +78,17 @@ export default {
         }
         throw err
       })
+    },
+
+    'DISPATCH_MESSAGE' (store, message) {
+      console.log(message)
     }
   },
 
   getters: {
     connected: state => (state.connected),
     yunohost: state => (state.yunohost),
-    waiting: state => state.waiting
+    waiting: state => state.waiting,
+    host: state => state.host
   }
 }

app/vue.config.js

@@ -52,10 +52,16 @@ module.exports = {
     }
   },
   devServer: {
+    https: true,
     proxy: {
-      '^/api': {
-        target: `https://${process.env.VUE_APP_IP}/yunohost`
+      '^/yunohost': {
+        target: `https://${process.env.VUE_APP_IP}`,
+        ws: true,
+        logLevel: 'debug'
       }
+    },
+    watchOptions: {
+      ignored: /node_modules/
     }
   }
 }