595 lines
24 KiB
Python
595 lines
24 KiB
Python
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import datetime
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import json
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import logging
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import os
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import random
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import re
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import string
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import sys
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import traceback
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from os import path, remove
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import background_task
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import jwt
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import pdfkit
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import pytz
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import requests as rq
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from django.conf import settings
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from django.core.mail import EmailMultiAlternatives
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from django.forms.models import model_to_dict
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from django.http import Http404
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from django.shortcuts import get_object_or_404
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from django.template.loader import render_to_string
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from django.utils.html import strip_tags
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from django.utils import timezone
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from google.auth.transport import requests
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from google.oauth2 import id_token
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from rest_framework import status
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from rest_framework.response import Response
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from .constants import *
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from .models import User, PrePlacementOffer, PlacementApplication, Placement, Student, Internship,InternshipApplication
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logger = logging.getLogger('db')
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def get_token():
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def decorator(view_func):
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def wrapper_func(request, *args, **kwargs):
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try:
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authcode = request.data[AUTH_CODE]
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data = {
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'code': authcode,
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'client_id': CLIENT_ID,
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'client_secret': CLIENT_SECRET,
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'redirect_uri': REDIRECT_URI,
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'grant_type': 'authorization_code'
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}
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r = rq.post(OAUTH2_API_ENDPOINT, data=data)
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if r.status_code == 200:
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response = r.json()
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token = response[ID_TOKEN]
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refresh_token = response[REFRESH_TOKEN]
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request.META["HTTP_AUTHORIZATION"] = "Bearer " + token
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request.META["MODIFIED"] = "True"
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kwargs['refresh_token'] = refresh_token
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return view_func(request, *args, **kwargs)
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else:
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return Response({'action': "Get Token", 'message': "Invalid Auth Code"},
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status=status.HTTP_400_BAD_REQUEST)
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except Exception as e:
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logger.warning("Get Token: " + str(sys.exc_info()))
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return Response({'action': "Get Token", 'message': str(e)},
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status=status.HTTP_400_BAD_REQUEST)
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return wrapper_func
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return decorator
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def precheck(required_data=None):
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if required_data is None:
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required_data = []
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def decorator(view_func):
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def wrapper_func(request, *args, **kwargs):
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try:
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request_data = None
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if request.method == 'GET':
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request_data = request.GET
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elif request.method == 'POST':
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request_data = request.data
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if not len(request_data):
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request_data = request.POST
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if len(request_data):
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for i in required_data:
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# print(i)
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if i not in request_data:
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return Response({'action': "Pre check", 'message': str(i) + " Not Found"},
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status=status.HTTP_400_BAD_REQUEST)
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else:
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return Response({'action': "Pre check", 'message': "Message Data not Found"},
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status=status.HTTP_400_BAD_REQUEST)
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# print("Pre check: " + str(request_data))
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return view_func(request, *args, **kwargs)
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except:
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# print what exception is
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print(traceback.format_exc())
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logger.warning("Pre check: " + str(sys.exc_info()))
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return Response({'action': "Pre check", 'message': "Something went wrong"},
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status=status.HTTP_400_BAD_REQUEST)
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return wrapper_func
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return decorator
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def isAuthorized(allowed_users=None):
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if allowed_users is None:
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allowed_users = []
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def decorator(view_func):
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def wrapper_func(request, *args, **kwargs):
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try:
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headers = request.META
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if 'HTTP_AUTHORIZATION' in headers:
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token_id = headers['HTTP_AUTHORIZATION'][7:]
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idinfo = id_token.verify_oauth2_token(token_id, requests.Request(), CLIENT_ID)
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email = idinfo[EMAIL]
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user = get_object_or_404(User, email=email)
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if user:
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user.last_login_time = timezone.now()
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user.save()
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if len(set(user.user_type).intersection(set(allowed_users))) or allowed_users == '*':
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if "MODIFIED" in headers:
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return view_func(request, user.id, user.email, user.user_type, token_id, *args,
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**kwargs)
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else:
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return view_func(request, user.id, user.email, user.user_type, *args, **kwargs)
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else:
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raise PermissionError("Access Denied. You are not allowed to use this service")
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else:
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raise PermissionError("Authorization Header Not Found")
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except PermissionError:
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return Response({'action': "Is Authorized?", 'message': 'Access Denied'},
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status=status.HTTP_401_UNAUTHORIZED)
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except Http404:
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return Response({'action': "Is Authorized?", 'message': "User Not Found. Contact CDC for more details"},
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status=status.HTTP_404_NOT_FOUND)
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except ValueError as e:
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logger.error("Problem with Google Oauth2.0 " + str(e))
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return Response({'action': "Is Authorized?", 'message': 'Problem with Google Sign In'},
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status=status.HTTP_401_UNAUTHORIZED)
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except:
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logger.warning("Is Authorized? " + str(sys.exc_info()))
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return Response(
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{'action': "Is Authorized?", 'message': "Something went wrong. Contact CDC for more details"},
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status=status.HTTP_400_BAD_REQUEST)
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return wrapper_func
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return decorator
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def isAuthorizedService():
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def decorator(view_func):
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def wrapper_func(request, *args, **kwargs):
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try:
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headers = request.META
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if 'HTTP_AUTHORIZATION' in headers:
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token_id = headers['HTTP_AUTHORIZATION'][7:]
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jwt.decode(token_id, os.environ.get("JWT_SECRET_KEY"), algorithms="HS256")
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return view_func(request, *args, **kwargs)
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else:
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raise PermissionError("Authorization Header Not Found")
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except:
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logger.warning("Is Authorized? " + str(sys.exc_info()))
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return Response(
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{'action': "Is Authorized?", 'message': "Something went wrong. Contact CDC for more details"},
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status=status.HTTP_400_BAD_REQUEST)
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return wrapper_func
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return decorator
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def generateRandomString():
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try:
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N = 15
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res = ''.join(random.choices(string.ascii_uppercase + string.ascii_lowercase + string.digits, k=N))
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return res
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except:
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return False
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def saveFile(file, location):
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prefix = generateRandomString()
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file_name = prefix + "_" + file.name.strip()
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file_name = re.sub(r'[\\/:*?"<>|]', '_', file_name)
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if not path.isdir(location):
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os.makedirs(location)
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destination_path = location + str(file_name)
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if path.exists(destination_path):
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remove(destination_path)
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with open(destination_path, 'wb+') as destination:
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for chunk in file.chunks():
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destination.write(chunk)
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return file_name
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@background_task.background(schedule=2)
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def sendEmail(email_to, subject, data, template, attachment_jnf_response=None):
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try:
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if not isinstance(data, dict):
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data = json.loads(data)
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html_content = render_to_string(template, data) # render with dynamic value
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text_content = strip_tags(html_content)
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email_from = settings.EMAIL_HOST_USER
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if type(email_to) is list:
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recipient_list = [str(email) for email in email_to]
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else:
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recipient_list = [str(email_to), ]
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#batch 100 ppl to send as bcc
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for i in range(0,len(recipient_list),100):
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msg = EmailMultiAlternatives(subject, text_content, email_from,None,bcc=recipient_list[i:i+100])
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msg.attach_alternative(html_content, "text/html")
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if attachment_jnf_response:
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# logger.info(attachment_jnf_response)
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pdf = pdfkit.from_string(attachment_jnf_response['html'], False,
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options={"--enable-local-file-access": "", '--dpi': '96'})
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msg.attach(attachment_jnf_response['name'], pdf, 'application/pdf')
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msg.send()
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return True
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except:
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logger.error("Send Email: " + str(sys.exc_info()))
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return False
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def PlacementApplicationConditions(student, placement):
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try:
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selected_companies = PlacementApplication.objects.filter(student=student, selected=True)
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selected_companies_PSU = [i for i in selected_companies if i.placement.tier == 'psu']
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PPO = PrePlacementOffer.objects.filter(student=student, accepted=True)
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PPO_PSU = [i for i in PPO if i.tier == 'psu']
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# find length of PPO
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if len(selected_companies) + len(PPO) >= MAX_OFFERS_PER_STUDENT:
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raise PermissionError("Max Applications Reached for the Season")
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if len(selected_companies_PSU) > 0:
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raise PermissionError('Selected for PSU Can\'t apply anymore')
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if len(PPO_PSU) > 0:
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raise PermissionError('Selected for PSU Can\'t apply anymore')
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if placement.tier == 'psu':
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return True, "Conditions Satisfied"
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for i in selected_companies:
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if int(i.placement.tier) != 1 and int(i.placement.tier) <= int(placement.tier):
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return False, "Can't apply for this tier"
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elif int(i.placement.tier) == 1 and int(placement.tier) != 1:
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return False, "Can't apply for this tier"
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for i in PPO:
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if int(i.tier) != 1 and int(i.tier) <= int(placement.tier):
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return False, "Can't apply for this tier"
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elif int(i.tier) == 1 and int(placement.tier) != 1:
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return False, "Can't apply for this tier"
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if student.degree != 'bTech' and not placement.rs_eligible:
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raise PermissionError("Can't apply for this placement")
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return True, "Conditions Satisfied"
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except PermissionError as e:
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return False, e
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except:
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logger.warning("Utils - PlacementApplicationConditions: " + str(sys.exc_info()))
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return False, "_"
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def InternshipApplicationConditions(student, internship):
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try:
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selected_companies = InternshipApplication.objects.filter(student=student, selected=True)
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if len(selected_companies)>=1:
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# print("selected companies > 1")
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return False, "You have already secured a Internship"
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return True, "Conditions Satisfied"
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except PermissionError as e:
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return False, e
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except:
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logger.warning("Utils - InternshipApplicationConditions: " + str(sys.exc_info()))
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return False, "_"
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def getTier(compensation_gross, is_psu=False):
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try:
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if is_psu:
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return True, 'psu'
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if compensation_gross < 0:
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raise ValueError("Negative Compensation")
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elif compensation_gross < 450000: # Open Tier If less than 450,000
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return True, "8"
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elif compensation_gross < 600000: # Tier 7 If less than 600,000
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return True, "7"
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# Tier 6 If less than 800,000 and greater than or equal to 600,000
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elif compensation_gross < 800000:
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return True, "6"
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# Tier 5 If less than 1,000,000 and greater than or equal to 800,000
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elif compensation_gross < 1000000:
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return True, "5"
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# Tier 4 If less than 1,200,000 and greater than or equal to 1,000,000
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elif compensation_gross < 1200000:
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return True, "4"
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# Tier 3 If less than 1,500,000 and greater than or equal to 1,200,000
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elif compensation_gross < 1500000:
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return True, "3"
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# Tier 2 If less than 1,800,000 and greater than or equal to 1,500,000
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elif compensation_gross < 1800000:
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return True, "2"
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# Tier 1 If greater than or equal to 1,800,000
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elif compensation_gross >= 1800000:
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return True, "1"
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else:
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raise ValueError("Invalid Compensation")
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except ValueError as e:
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logger.warning("Utils - getTier: " + str(sys.exc_info()))
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return False, e
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except:
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logger.warning("Utils - getTier: " + str(sys.exc_info()))
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return False, "_"
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def generateOneTimeVerificationLink(email, opening_id, opening_type):
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try:
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token_payload = {
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"email": email,
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"opening_id": opening_id,
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"opening_type": opening_type,
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'exp': datetime.datetime.utcnow() + datetime.timedelta(hours=EMAIL_VERIFICATION_TOKEN_TTL)
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}
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token = jwt.encode(token_payload, os.environ.get("EMAIL_VERIFICATION_SECRET_KEY"), algorithm="HS256")
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link = LINK_TO_EMAIl_VERIFICATION_API.format(token=token)
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return True, link
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except:
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logger.warning("Utils - generateOneTimeVerificationLink: " + str(sys.exc_info()))
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return False, "_"
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def verify_recaptcha(request):
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try:
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data = {
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'secret': settings.RECAPTCHA_SECRET_KEY,
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'response': request
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}
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r = rq.post('https://www.google.com/recaptcha/api/siteverify', data=data)
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result = r.json()
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if not result['success']:
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logger.warning("Utils - verify_recaptcha: " + str(result))
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return result['success']
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except:
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# get exception line number
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logger.warning("Utils - verify_recaptcha: " + str(sys.exc_info()))
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return False, "_"
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def opening_description_table_html(opening):
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# check typing of opening
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type = ""
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if isinstance(opening, Placement):
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type = "Job"
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details = model_to_dict(opening, fields=[field.name for field in Placement._meta.fields],
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exclude=EXCLUDE_IN_PDF)
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elif isinstance(opening, Internship):
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type = "Internship"
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details = model_to_dict(opening, fields=[field.name for field in Internship._meta.fields],
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exclude=EXCLUDE_IN_PDF)
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# check typing of opening is query dict
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else: # if isinstance(opening, QueryDict):
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details = opening
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keys = list(details.keys())
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newdetails = {"ID": opening.id}
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for key in keys:
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if isinstance(details[key], list):
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details[key] = {"details": details[key], "type": ["list"]}
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if key in SPECIAL_FORMAT_IN_PDF:
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if key == 'website':
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details[key] = {"details": details[key], "type": ["link"]}
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else:
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details[key] = {"details": [item for item in details[key]["details"]], "type": ["list", "link"],
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"link": PDF_FILES_SERVING_ENDPOINT + opening.id + "/"}
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new_key = key.replace('_', ' ')
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if new_key.endswith(' names'):
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new_key = new_key[:-6]
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new_key = new_key.capitalize()
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newdetails[new_key] = details[key]
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imagepath = os.path.abspath('./templates/image.png')
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data = {
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"data": newdetails,
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"imgpath": imagepath,
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"type": type
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}
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return render_to_string(COMPANY_JNF_RESPONSE_TEMPLATE, data)
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def placement_eligibility_filters(student, placements):
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try:
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filtered_placements = []
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for placement in placements.iterator():
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if PlacementApplicationConditions(student, placement)[0]:
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filtered_placements.append(placement)
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return filtered_placements
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except:
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logger.warning("Utils - placement_eligibility_filters: " + str(sys.exc_info()))
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return placements
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def internship_eligibility_filters(student, internships):
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try:
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filtered_internships = []
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for internship in internships.iterator():
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|
if InternshipApplicationConditions(student, internship)[0]:
|
||
|
filtered_internships.append(internship)
|
||
|
|
||
|
return filtered_internships
|
||
|
except:
|
||
|
logger.warning("Utils - internship_eligibility_filters: " + str(sys.exc_info()))
|
||
|
return internships
|
||
|
|
||
|
|
||
|
@background_task.background(schedule=2)
|
||
|
def send_opening_notifications(opening_id, opening_type=PLACEMENT):
|
||
|
try:
|
||
|
# print(opening_id, opening_type)
|
||
|
if opening_type == PLACEMENT:
|
||
|
opening = get_object_or_404(Placement, id=opening_id)
|
||
|
else:
|
||
|
opening = get_object_or_404(Internship, id=opening_id)
|
||
|
emails=[]
|
||
|
students = Student.objects.all()
|
||
|
for student in students.iterator():
|
||
|
if student.branch in opening.allowed_branch:
|
||
|
if student.degree == 'bTech' or opening.rs_eligible is True:
|
||
|
if (isinstance(opening,Placement) and PlacementApplicationConditions(student, opening)[0]) or (isinstance(opening,Internship) and InternshipApplicationConditions(student, opening)[0]):
|
||
|
try:
|
||
|
student_user = get_object_or_404(User, id=student.id)
|
||
|
emails.append(student_user.email)
|
||
|
#sendEmail(student_user.email, subject, data, NOTIFY_STUDENTS_OPENING_TEMPLATE)
|
||
|
except Http404:
|
||
|
logger.warning('Utils - send_opening_notifications: user not found : ' + student.id)
|
||
|
except Exception as e:
|
||
|
logger.warning('Utils - send_opening_notifications: For Loop' + str(e))
|
||
|
subject = NOTIFY_STUDENTS_OPENING_TEMPLATE_SUBJECT.format(
|
||
|
company_name=opening.company_name)
|
||
|
deadline_datetime = opening.deadline_datetime.astimezone(pytz.timezone('Asia/Kolkata'))
|
||
|
data = {
|
||
|
"company_name": opening.company_name,
|
||
|
"opening_type": "INTERNSHIP" if isinstance(opening, Internship) else "PLACEMENT",
|
||
|
"designation": opening.designation,
|
||
|
"deadline": deadline_datetime.strftime("%A, %-d %B %Y, %-I:%M %p"),
|
||
|
"link": PLACEMENT_OPENING_URL.format(id=opening.designation) if opening_type == PLACEMENT else INTERNSHIP_OPENING_URL.format(id=opening.designation),
|
||
|
}
|
||
|
sendEmail(emails, subject, data, NOTIFY_STUDENTS_OPENING_TEMPLATE) #handled multiple mailings
|
||
|
except:
|
||
|
logger.warning('Utils - send_opening_notifications: ' + str(sys.exc_info()))
|
||
|
return False
|
||
|
|
||
|
def get_eligible_emails(opening_id, opening_type=PLACEMENT,send_all=False):
|
||
|
try:
|
||
|
# print(opening_id, opening_type)
|
||
|
if opening_type == PLACEMENT:
|
||
|
opening = get_object_or_404(Placement, id=opening_id)
|
||
|
else:
|
||
|
opening = get_object_or_404(Internship, id=opening_id)
|
||
|
emails=[]
|
||
|
students = Student.objects.all()
|
||
|
for student in students.iterator():
|
||
|
if student.branch in opening.allowed_branch:
|
||
|
if student.degree == 'bTech' or opening.rs_eligible is True:
|
||
|
if (isinstance(opening,Placement) and PlacementApplicationConditions(student, opening)[0]) or (
|
||
|
isinstance(opening,Internship) and InternshipApplicationConditions(student, opening)[0]):
|
||
|
try:
|
||
|
student_user = get_object_or_404(User, id=student.id)
|
||
|
#if send_all True send all students eligible for the opening
|
||
|
if send_all:
|
||
|
emails.append(student_user.email)
|
||
|
continue
|
||
|
# check if he applied
|
||
|
if opening_type == PLACEMENT:
|
||
|
if PlacementApplication.objects.filter(student=student, placement=opening).exists():
|
||
|
continue
|
||
|
else:
|
||
|
if InternshipApplication.objects.filter(student=student, internship=opening).exists():
|
||
|
continue
|
||
|
emails.append(student_user.email)
|
||
|
except Exception as e:
|
||
|
logger.warning('Utils - send_opening_notifications: For Loop' + str(e))
|
||
|
return False, []
|
||
|
return True, emails
|
||
|
except:
|
||
|
logger.warning('Utils - send_opening_notifications: ' + str(sys.exc_info()))
|
||
|
return False, []
|
||
|
|
||
|
def exception_email(opening):
|
||
|
opening = opening.dict()
|
||
|
data = {
|
||
|
"designation": opening["designation"],
|
||
|
"opening_type": "INTERNSHIP" if opening["opening_type"] == "INF" else "PLACEMENT",
|
||
|
"company_name": opening["company_name"],
|
||
|
}
|
||
|
pdfhtml = opening_description_table_html(opening)
|
||
|
name = opening["company_name"] + '_jnf_response.pdf' if opening[OPENING_TYPE]!="INF" else opening["company_name"] + '_inf_response.pdf'
|
||
|
attachment_jnf_respone = {
|
||
|
"name": name,
|
||
|
"html": pdfhtml,
|
||
|
}
|
||
|
|
||
|
sendEmail("cdc@iitdh.ac.in", COMPANY_OPENING_ERROR_TEMPLATE.format(company_name=opening["company_name"]), data,
|
||
|
COMPANY_OPENING_SUBMITTED_TEMPLATE, attachment_jnf_respone)
|
||
|
|
||
|
|
||
|
def store_all_files(request):
|
||
|
files = request.FILES
|
||
|
data = request.data
|
||
|
# save all the files
|
||
|
if files:
|
||
|
# company details pdf
|
||
|
for file in files.getlist(COMPANY_DETAILS_PDF):
|
||
|
file_location = STORAGE_DESTINATION_COMPANY_ATTACHMENTS + "temp" + '/'
|
||
|
saveFile(file, file_location)
|
||
|
# compensation details pdf
|
||
|
for file in files.getlist(COMPENSATION_DETAILS_PDF):
|
||
|
file_location = STORAGE_DESTINATION_COMPANY_ATTACHMENTS + "temp" + '/'
|
||
|
saveFile(file, file_location)
|
||
|
#stipend details pdf for internships
|
||
|
for file in files.getlist(STIPEND_DETAILS_PDF):
|
||
|
file_location = STORAGE_DESTINATION_COMPANY_ATTACHMENTS + "temp" + '/'
|
||
|
saveFile(file, file_location)
|
||
|
# selection procedure details pdf
|
||
|
for file in files.getlist(SELECTION_PROCEDURE_DETAILS_PDF):
|
||
|
file_location = STORAGE_DESTINATION_COMPANY_ATTACHMENTS + "temp" + '/'
|
||
|
saveFile(file, file_location)
|
||
|
# description pdf
|
||
|
for file in files.getlist(DESCRIPTION_PDF):
|
||
|
file_location = STORAGE_DESTINATION_COMPANY_ATTACHMENTS + "temp" + '/'
|
||
|
saveFile(file, file_location)
|
||
|
|
||
|
|
||
|
def send_email_for_opening(opening):
|
||
|
try:
|
||
|
|
||
|
# Prepare email data and attachment
|
||
|
pdfhtml = opening_description_table_html(opening)
|
||
|
if isinstance(opening, Placement):
|
||
|
name = opening.company_name + '_jnf_response.pdf'
|
||
|
elif isinstance(opening, Internship):
|
||
|
name = opening.company_name + '_inf_response.pdf'
|
||
|
attachment_jnf_respone = {
|
||
|
"name": name,
|
||
|
"html": pdfhtml,
|
||
|
}
|
||
|
data = {
|
||
|
"designation": opening.designation,
|
||
|
"opening_type": "INTERNSHIP" if isinstance(opening, Internship) else "PLACEMENT",
|
||
|
"company_name": opening.company_name,
|
||
|
}
|
||
|
|
||
|
emails = [opening.email] + CDC_REPS_EMAILS
|
||
|
# Send the email
|
||
|
sendEmail(emails,
|
||
|
COMPANY_OPENING_SUBMITTED_TEMPLATE_SUBJECT.format(id=opening.designation, company=opening.company_name), data,
|
||
|
COMPANY_OPENING_SUBMITTED_TEMPLATE, attachment_jnf_respone)
|
||
|
|
||
|
except Exception as e:
|
||
|
# Handle the exception here (e.g., log the error, send an error email, etc.)
|
||
|
print("An error occurred while sending the email:", e)
|
||
|
|
||
|
|
||
|
@background_task.background(schedule=2)
|
||
|
def send_opening_to_notifications_service(id,name,deadline,role,opening_type=PLACEMENT):
|
||
|
data={
|
||
|
"id":id,
|
||
|
"company":name,
|
||
|
"deadline":deadline,
|
||
|
"role":role,
|
||
|
"opening_type":opening_type
|
||
|
}
|
||
|
encoded=jwt.encode(data,os.environ.get("JWT_SECRET_KEY"),algorithm="HS256")
|
||
|
data_={
|
||
|
"token":encoded,
|
||
|
}
|
||
|
resp=rq.post(url=os.environ.get("PUSH_API_URL")+"addopening/",data=data_)
|
||
|
if resp.status_code==200:
|
||
|
print("Notification Sent")
|
||
|
else:
|
||
|
print("Notification Failed")
|
||
|
logger.warning("Utils - send_opening_to_notifications_service: " + str(resp) + "data sent:"+str(data))
|
||
|
|