setting end date in email campaign

erpnext/crm/doctype/email_campaign/email_campaign.py

@@ -27,7 +27,7 @@ class EmailCampaign(Document):
 		for entry in campaign.get("campaign_schedules"):
 			send_after_days.append(entry.send_after_days)
 		try:
-			end_date = add_days(getdate(self.start_date), max(send_after_days))
+			self.end_date = add_days(getdate(self.start_date), max(send_after_days))
 		except ValueError:
 			frappe.throw(_("Please set up the Campaign Schedule in the Campaign {0}").format(self.campaign_name))
 

erpnext/patches.txt

@@ -667,3 +667,4 @@ erpnext.patches.v12_0.update_healthcare_refactored_changes
 erpnext.patches.v12_0.set_total_batch_quantity
 erpnext.patches.v12_0.rename_mws_settings_fields
 erpnext.patches.v12_0.set_updated_purpose_in_pick_list
+erpnext.patches.v13_0.update_end_date_and_status_in_email_campaign

erpnext/patches/v13_0/update_end_date_and_status_in_email_campaign.py

@@ -0,0 +1,24 @@
+from __future__ import unicode_literals
+import frappe
+from frappe.utils import add_days, getdate, today
+
+def execute():
+    if frappe.db.exists('DocType', 'Email Campaign'):
+        email_campaign = frappe.get_all('Email Campaign')
+        for campaign in email_campaign:
+            doc = frappe.get_doc("Email Campaign",campaign["name"])
+            send_after_days = []
+
+            camp = frappe.get_doc("Campaign", doc.campaign_name)
+            for entry in camp.get("campaign_schedules"):
+                send_after_days.append(entry.send_after_days)
+            if send_after_days:
+                end_date = add_days(getdate(doc.start_date), max(send_after_days))
+                doc.db_set("end_date", end_date)
+            today_date = getdate(today())
+            if doc.start_date > today_date:
+                doc.db_set("status", "Scheduled")
+            elif end_date >= today_date:
+                doc.db_set("status", "In Progress")
+            elif end_date < today_date:
+                doc.db_set("status", "Completed")