Fixed redis error, and added link on click on notifications

api/redis.js

@@ -1,39 +1,70 @@
-const redis = require("redis")
-const client = redis.createClient()
-
+let client;
+try {
+  const redis = require("redis");
+  console.log("trying to create");
+  client = redis.createClient();
+  client.on("error", function(err) {
+    client.quit();
+    console.error("Missing redis-configurations..");
+    client = {
+      rpush: function() {
+        console.log("redis lpush", arguments);
+        if (typeof arguments[arguments.length - 1] == "function") {
+          arguments[arguments.length - 1](null);
+        }
+      },
+      lrange: function() {
+        console.log("redis lrange", arguments);
+        if (typeof arguments[arguments.length - 1] == "function") {
+          arguments[arguments.length - 1](null);
+        }
+      },
+      del: function() {
+        console.log("redis del", arguments);
+        if (typeof arguments[arguments.length - 1] == "function") {
+          arguments[arguments.length - 1](null);
+        }
+      }
+    };
+  });
+} catch (e) {}
 
 const addMessage = message => {
   const json = JSON.stringify(message);
-  client.rpush("messages", json)
+  client.rpush("messages", json);
 
-  return message
-}
+  return message;
+};
 
-const history = (skip=0, take=20) => {
-  skip = (1 + skip) * -1     // negate to get FIFO
-  return new Promise((resolve, reject) => client.lrange("messages", (skip * take), skip, (err, data) => {
-    if (err) {
-      console.log(err);
-      reject(err);
-    }
+const history = (skip = 0, take = 20) => {
+  skip = (1 + skip) * -1; // negate to get FIFO
+  return new Promise((resolve, reject) =>
+    client.lrange("messages", skip * take, skip, (err, data) => {
+      if (err) {
+        console.log(err);
+        reject(err);
+      }
 
-    data = data.map(data => JSON.parse(data));
-    resolve(data);
-  }))
-}
+      data = data.map(data => JSON.parse(data));
+      resolve(data);
+    })
+  );
+};
 
 const clearHistory = () => {
-  return new Promise((resolve, reject) => client.del("messages", (err, success) => {
-    if (err) {
-      console.log(err);
-      reject(err);
-    }
-    resolve(success == 1 ? true : false);
-  }))
-}
+  return new Promise((resolve, reject) =>
+    client.del("messages", (err, success) => {
+      if (err) {
+        console.log(err);
+        reject(err);
+      }
+      resolve(success == 1 ? true : false);
+    })
+  );
+};
 
 module.exports = {
   addMessage,
   history,
   clearHistory
-};
+};