Create at_calculate_deliveries.js

at_calculate_deliveries.js

@@ -0,0 +1,41 @@
+// For each subscriber, calculate how many deliveries they'll need for the year. 
+// --------------------------
+let subscribersTable = base.getTable("Subscribers");
+let subscribersView = subscribersTable.getView("Grid view");
+let subscriptionsTable = base.getTable("Subscriptions");
+let subscriptionsView = subscriptionsTable.getView("Grid view");
+let subscriberResults = await subscribersView.selectRecordsAsync({fields: ['Name']});
+let subscriptionsResults = await subscriptionsView.selectRecordsAsync({fields: ['Subscribers','Frequency (in weeks)']});
+
+// Updates can only be in batches of 50
+let updates = new Array();
+let batchSize = 0;
+let MAX_BATCH_SIZE = 50;
+
+for(let subscriberRecord of subscriberResults.records){
+  let deliverySlots = new Set();
+  let subscriberName = subscriberRecord.getCellValue('Name');
+
+  for(let shareRecord of subscriptionsResults.records){
+      if(shareRecord.getCellValueAsString('Subscribers') == subscriberName){
+          let freqency = parseInt(shareRecord.getCellValueAsString("Frequency (in weeks)"));
+          let freqIterator = freqency;
+          while(freqIterator <= 52){
+            deliverySlots.add(freqIterator);
+            freqIterator += freqency;
+          }
+      }
+  }
+
+  updates.push({id: subscriberRecord.id, fields: {"Scheduled Deliveries": deliverySlots.size}});
+  batchSize++;
+
+  if(batchSize == MAX_BATCH_SIZE){
+    await subscribersTable.updateRecordsAsync(updates);
+    updates = new Array();
+    batchSize = 0;
+  }
+
+}
+
+await subscribersTable.updateRecordsAsync(updates);