From 6fc893140f3e39bf2cc859fe149a05b4cbaf6373 Mon Sep 17 00:00:00 2001
From: Dominik Serve <serve@fs.tum.de>
Date: Tue, 8 Nov 2016 16:15:04 +0100
Subject: [PATCH] move automatic output module mqtt draft to archive

---
 misc/archive/mi5OutputModuleAutomaticMQTT.js | 97 ++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 misc/archive/mi5OutputModuleAutomaticMQTT.js

diff --git a/misc/archive/mi5OutputModuleAutomaticMQTT.js b/misc/archive/mi5OutputModuleAutomaticMQTT.js
new file mode 100644
index 0000000..0fcf871
--- /dev/null
+++ b/misc/archive/mi5OutputModuleAutomaticMQTT.js
@@ -0,0 +1,97 @@
+/**
+ *  Integration of image processing for automatic output module
+ *  First draft with MQTT
+ *
+ *  @author Dominik Serve
+ *  @date 2016-11-07
+ */
+var mqtt = require('mqtt');
+var mqttAddress = 'tcp://192.168.0.20';
+
+var EventEmitter = require('events').EventEmitter;
+var util = require('util');
+util.inherits(module, EventEmitter);
+
+
+function module(){
+  EventEmitter.call(this);
+  this.client = undefined;
+  this.active = false;
+  this.numberOfAttempts = 3;
+  this.busy = false;
+}
+
+exports.newAutomaticOutput = new module();
+
+module.prototype.log = function(message) {
+  console.log('Automatic-Output-Module: '.cyan, message);
+};
+
+module.prototype.start = function(){
+  var self = this;
+  self.log('starting to connect')
+  this.client = mqtt.connect(mqttAddress);
+  this.client.on('connect', function () {
+    self.log('MQTT Connected');
+    self.client.publish('presence', 'Hello mqtt');
+    self.active = true;
+    self.emit('active');
+  });
+  this.client.on('reconnecting', function () {
+    self.log('MQTT Reconnecting');
+    self.emit('inactive');
+    self.active = false;
+  });
+  this.client.on('close', function () {
+    self.log('MQTT Connection closed');
+    self.emit('inactive');
+    self.active = false;
+  });
+};
+
+module.prototype.stop = function(){
+  this.client.close();
+  this.emit('close');
+};
+
+module.prototype.execute = function(){
+  this.log('execute');
+  var self = this;
+  if(this.busy)
+    return self.log('Already running.');
+
+  this.busy = true;
+  self.emit('busy');
+  var attempt = 0;
+  var moduleTopic = 'result';
+  this.client.subscribe(moduleTopic);
+  this.client.publish('execute', '1');
+  this.client.on('message', subscribed);
+
+  function subscribed(topic,message){
+    console.log(topic,message.toString());
+    self.log('attempt:'+ attempt);
+    if(topic === moduleTopic){
+      if(message == true){
+        var number = attempt +1;
+        self.emit('message', 'Attempt ' + number + ' successful.');
+        if(attempt == self.numberOfAttempts-1){
+          self.emit('done');
+          self.client.unsubscribe(moduleTopic);
+          self.client.removeListener('message', subscribed);
+          self.busy = false;
+          return;
+        } else {
+          // attemt < self.numberOfAttempts
+          attempt ++;
+        }
+      } else {
+        // message was false
+        var number = attempt +1;
+        self.emit('message', 'Attempt ' + number + ' unsuccessful. Restarting.');
+        attempt = 0;
+      }
+      self.client.publish('execute','1');
+    }
+  }
+};
\ No newline at end of file