app/model: Hub: Add ability for multi. instances

app/model/Hub.js

@@ -41,10 +41,19 @@ class Hub {
 
     this.waitAsync = async (id, locations, rejectFunc) => {
       let promise = new Promise((resolve, reject) => {
-        this.drivers[id] = {
+        let devices = this.drivers[id]
+
+        // Keep device informations.
+
+        if (!devices) {
+          devices = []
+          this.drivers[id] = devices
+        }
+
+        devices.push({
           resolve: resolve,
           reject: reject
-        }
+        })
 
         // Pass reject function.
         if (rejectFunc) {
@@ -55,25 +64,41 @@ class Hub {
         indexLambda(id, locations)
       })
 
-      let userId = await promise
-
-      // Remove indexed locations.
-      unindexLambda(id, locations)
+      try {
+        return await promise
+      } finally {
+        // Remove indexed locations.
+        unindexLambda(id, locations)
 
-      return userId
+        delete this.drivers[id]
+      }
     }
   }
 
   filter (location) {
-    return this.locations[location]
+    return [...this.locations[location] || []]
   }
 
   pick (id, userId) {
-    this.drivers[id].resolve(userId)
+    let handle = this.drivers[id]
+
+    if (handle) {
+      handle.forEach(h => h.resolve(userId))
+      return true
+    }
+
+    return false
   }
 
   reject (id, reason) {
-    this.drivers[id].reject(reason)
+    let handle = this.drivers[id]
+
+    if (handle) {
+      handle.forEach(h => h.reject(reason))
+      return true
+    }
+
+    return false
   }
 }