Rename Defiance file for use as local alerts template

weather/local_alerts.js

@@ -0,0 +1,123 @@
+const severeWarningEvents = ["Severe Thunderstorm Warning","Destructive Severe Thunderstorm Warning","Considerable Destructive Severe Thunderstorm Warning"]
+const tornadoWarningEvents = ["Tornado Warning","Radar Indicated Tornado Warning","Confirmed Tornado Warning","Tornado Emergency"]
+const tornadoWatchEvents = ["Tornado Watch"]
+const severeThunderstormWatchEvents = ["Severe Thunderstorm Watch"]
+
+let alerts = msg.payload.features
+let tornado_possible = false
+let considerable_destructive = false
+let confirmed = false
+
+// Filter for Severe Thunderstorm Warnings
+
+let ts = alerts.filter(function(alert) {
+    if (alert.properties &&
+    severeWarningEvents.includes(alert.properties.event)) {
+        return true
+    }
+})
+
+// Filter for Severe Thunderstorm Warnings with tornado detection
+// that have a tornado possible parameter
+
+let tstp = alerts.filter(function(alert) {
+    if (alert.properties &&
+    severeWarningEvents.includes(alert.properties.event) &&
+    alert.properties.parameters &&
+    alert.properties.parameters.tornadoDetection &&
+    alert.properties.parameters.tornadoDetection.length > 0) {
+        let tornadoPossible = alert.properties.parameters.tornadoDetection[0]
+        return tornadoPossible === "POSSIBLE"
+    }
+})
+
+if (tstp.length > 0) {
+    tornado_possible = true
+}
+
+// Filter for considerable destructive severe thunderstorm warnings
+
+let cdst = alerts.filter(function(alert) {
+    if (alert.properties &&
+    alert.properties.event === "Considerable Destructive Severe Thunderstorm Warning") {
+        return true
+    }
+})
+
+if (cdst.length > 0) {
+    considerable_destructive = true
+}
+
+// Filter for Tornado Warnings
+
+let tornado = alerts.filter(function(alert) {
+    if (alert.properties &&
+    tornadoWarningEvents.includes(alert.properties.event)) {
+        return true
+    }
+})
+
+let confirmed_tornado = alerts.filter(function(alert) {
+    if (alert.properties &&
+    alert.properties.event === "Confirmed Tornado Warning") {
+        return true
+    }
+})
+
+if (confirmed_tornado.length > 0) {
+    confirmed = true
+}
+
+// Filter for Tornado Watches
+
+let tornado_watch = alerts.filter(function(alert) {
+    if (alert.properties &&
+    tornadoWatchEvents.includes(alert.properties.event)) {
+        return true
+    }
+})
+
+// Filter for Severe Thunderstorm Watches
+
+let severe_thunderstorm_watch = alerts.filter(function(alert) {
+    if (alert.properties &&
+    severeThunderstormWatchEvents.includes(alert.properties.event)) {
+        return true
+    }
+})
+
+// If there are any alerts, return them
+
+let tstormMsg = {
+    "payload": {
+        "alerts": ts,
+        "count": ts.length,
+        "tornado_possible": tornado_possible,
+        "considerable_destructive": considerable_destructive
+    }
+}
+
+let tornadoWarnMsg = {
+    "payload": {
+        "alerts": tornado,
+        "count": tornado.length,
+        "confirmed": confirmed
+    }
+}
+
+let tornadoWatchMsg = {
+    "payload": {
+        "alerts": tornado_watch,
+        "count": tornado_watch.length
+    }
+}
+
+let severeThunderstormWatchMsg = {
+    "payload": {
+        "alerts": severe_thunderstorm_watch,
+        "count": severe_thunderstorm_watch.length
+    }
+}
+
+node.send([tstormMsg,tornadoWarnMsg,tornadoWatchMsg,severeThunderstormWatchMsg])
+node.status({fill:'green',shape:'dot',text:'Alerts Updated'})