initial import

frontend/src/eventsource/handlers/credits.js

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+import store from '@/store'
+
+export default {
+    handle(data) {
+        store.setCreditsAction(data.content)
+    }
+}

frontend/src/eventsource/handlers/index.js

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+import credits from './credits'
+
+var handlers = {
+    'credits': credits
+}
+
+export default {
+    handle(data) {
+        if(handlers[data.type]) {
+            handlers[data.type].handle(data)
+        }
+    }
+}

frontend/src/eventsource/index.js

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+import store from "../store"
+import handler from './handlers'
+
+var connection = null
+var onOpenCallback = null
+var onCloseCallback = null
+
+const eventSource = {
+    connect(channel) {
+        if(connection != null) {
+            connection.close();
+        }
+
+        connection = new EventSource('/feed/updates/' + channel)
+
+        connection.addEventListener("message", function(message) {
+            var data = JSON.parse(message.data)
+            handler.handle(data)
+            store.setRawMessageAction(message.data)
+        })
+
+        connection.addEventListener("open", function () {
+            if(typeof onOpenCallback === 'function') {
+                onOpenCallback()
+            }
+        })     
+        
+        connection.addEventListener("close", function () {
+            if(typeof onCloseCallback === 'function') {
+                onCloseCallback()
+            }
+        })     
+        
+        connection.addEventListener("error", function () {
+            if(connection.readyState !== EventSource.CONNECTING) {
+                if(typeof onCloseCallback === 'function') {
+                    onCloseCallback()
+                }
+            }
+        })
+    },
+    isConnected() {
+        return connection.readyState === EventSource.OPEN
+    },
+    isConnecting() {
+        return connection.readyState === EventSource.CONNECTING
+    },
+    onOpen(callback) {
+        onOpenCallback = callback
+    },
+    onClose(callback) {
+        onCloseCallback = callback
+    }
+}
+
+export default eventSource