Send reminder mails service

CDC_Backend/APIs/constants.py

@@ -158,6 +158,7 @@ STUDENT_APPLICATION_SUBMITTED_TEMPLATE_SUBJECT = 'CDC - Application Submitted -
 STUDENT_APPLICATION_UPDATED_TEMPLATE_SUBJECT = 'CDC - Application Updated - {company_name}'
 COMPANY_EMAIl_VERIFICATION_TEMPLATE_SUBJECT = 'Email Verification - Career Development Cell, IIT Dharwad'
 NOTIFY_STUDENTS_OPENING_TEMPLATE_SUBJECT = 'Placement Opportunity at {company_name}'
+REMINDER_STUDENTS_OPENING_TEMPLATE_SUBJECT = 'Reminder - Placement Opportunity at {company_name}'
 
 STUDENT_APPLICATION_SUBMITTED_TEMPLATE = 'student_application_submitted.html'
 COMPANY_OPENING_SUBMITTED_TEMPLATE = 'company_opening_submitted.html'
@@ -167,6 +168,7 @@ STUDENT_APPLICATION_UPDATED_TEMPLATE = 'student_application_updated.html'
 COMPANY_EMAIL_VERIFICATION_TEMPLATE = 'company_email_verification.html'
 COMPANY_JNF_RESPONSE_TEMPLATE = 'company_jnf_response.html'
 NOTIFY_STUDENTS_OPENING_TEMPLATE = 'notify_students_new_opening.html'
+REMINDER_STUDENTS_OPENING_TEMPLATE = 'students_opening_reminder.html'
 
 APPLICATION_CSV_COL_NAMES = ['Applied At', 'Roll No.', 'Name', 'Email', 'Phone Number', 'Branch', 'Batch', 'CPI',
                              'Resume', 'Selected', ]

CDC_Backend/CDC_Backend/settings.py

@@ -46,6 +46,7 @@ INSTALLED_APPS = [
     'background_task',
     'simple_history',
     'import_export',
+    'django_extensions',
 ]
 
 MIDDLEWARE = [

CDC_Backend/scripts/send_reminder_mails.py

@@ -0,0 +1,63 @@
+from APIs.models import Placement, Student, PlacementApplication, User
+from APIs.utils import sendEmail, PlacementApplicationConditions
+from APIs.constants import *
+from django.shortcuts import get_object_or_404
+from django.utils import timezone
+import time
+import pytz
+
+REPEAT_AFTER = 10 * 60
+
+
+def send_reminder_mails():
+    placements = Placement.objects.all()
+    students = Student.objects.all()
+
+    for placement in placements.iterator():
+        print("Processing placement: ", placement)
+        # if placement is approved and email is verified
+        if not (placement.offer_accepted and placement.email_verified):
+            continue
+
+        # if placement is not expired
+        if placement.deadline_datetime < timezone.now():
+            continue
+
+        # send the reminder mail if the deadline is within 24 hours +- ReapetAfter
+        if timezone.now() - timezone.timedelta(
+                seconds=REPEAT_AFTER) <= placement.deadline_datetime - timezone.timedelta(days=1) < timezone.now() + \
+                timezone.timedelta(seconds=REPEAT_AFTER):
+            for student in students:
+                try:
+                    # if Application not found then send email
+                    if not PlacementApplication.objects.filter(placement=placement, student=student).exists():
+                        if student.branch in placement.allowed_branch:
+                            if student.degree == 'bTech' or placement.rs_eligible is True:
+                                if PlacementApplicationConditions(student, placement)[0]:
+                                    student_user = get_object_or_404(User, id=student.id)
+                                    # change timezone to IST
+                                    deadline_datetime = placement.deadline_datetime.astimezone(pytz.timezone('Asia/Kolkata'))
+                                    data = {
+                                        "company_name": placement.company_name,
+                                        "opening_type": 'Placement',
+                                        "deadline": deadline_datetime.strftime("%A, %-d %B %Y, %-I:%M %p"),
+                                        "link": PLACEMENT_OPENING_URL.format(id=placement.id)
+                                    }
+                                    print("Sending mail to " + student_user.email, "placement id: ", placement.id)
+                                    sendEmail(student_user.email,
+                                              REMINDER_STUDENTS_OPENING_TEMPLATE_SUBJECT.format(
+                                                  company_name=placement.company_name),
+                                              data, REMINDER_STUDENTS_OPENING_TEMPLATE)
+
+                except Exception as e:
+                    print(e)
+                    continue
+
+
+def run():
+    while True:
+        print("Sleeping for", REPEAT_AFTER, "seconds")
+        time.sleep(REPEAT_AFTER)
+        print("Running send_reminder_mails()")
+        send_reminder_mails()
+

CDC_Backend/templates/students_opening_reminder.html

@@ -45,7 +45,7 @@
                                     <h1 style="font-size:24px;margin:0 0 20px 0;font-family: 'Roboto', sans-serif;
 ">{{ opening_type }} Opportunity at {{ company_name }}</h1>
                                     <p style="margin:0 0 12px 0;font-size:16px;line-height:24px;font-family: 'Roboto', sans-serif;">
-                                        Gentle reminder for the same.
+                                        Gentle reminder to fill out the application form.
                                         Interested students can apply before <b>{{ deadline }}</b> in the <a
                                             href="{{ link }}">CDC-webportal</a>.
                                     </p>