Migration and model for triggers.

Not tested.

shared/triggers.js

@@ -0,0 +1,48 @@
+'use strict';
+
+const Entity = {
+    SUBSCRIPTION: 'subscription',
+    CAMPAIGN: 'campaign'
+};
+
+const Action = {
+    [Entity.SUBSCRIPTION]: {
+        CREATED: 'created',
+        LATEST_OPEN: 'latest_open',
+        LATEST_CLICK: 'latest_click'
+    },
+    [Entity.CAMPAIGN]: {
+        DELIVERED: 'delivered',
+        OPENED: 'opened',
+        CLICKED: 'clicked',
+        NOT_OPENED: 'not_opened',
+        NOT_CLICKED: 'not_clicked'
+    }
+};
+
+const EntityVals = {
+    subscription: 'SUBSCRIPTION',
+    campaign: 'CAMPAIGN'
+};
+
+const ActionVals = {
+    [Entity.SUBSCRIPTION]: {
+        created: 'CREATED',
+        latest_open: 'LATEST_OPEN',
+        latest_click: 'LATEST_CLICK'
+    },
+    [Entity.CAMPAIGN]: {
+        delivered: 'DELIVERED',
+        opened: 'OPENED',
+        clicked: 'CLICKED',
+        not_opened: 'NOT_OPENED',
+        not_clicked: 'NOT_CLICKED'
+    }
+};
+
+module.exports = {
+    Entity,
+    Action,
+    EntityVals,
+    ActionVals
+};