from datetime import date, timedelta import sys from django.core.management.base import BaseCommand, CommandError from django.template.loader import get_template from django.core.mail import send_mail, BadHeaderError from input.models import Project, Library, HonoraryCertificate, Travel, Email, BusinessCard, List from input.settings import URLPREFIX, IF_EMAIL, SURVEYPREFIX class Command(BaseCommand): ''' mails will be send here: - two weeks after confirmation of support for volunteer (/extern) send link with surveylink - same for HonoraryCertificate (/intern) - travel: mail 3 weeks after end of project. - assumed end of project (/project) reached: mail to IF, link to project-editpage - 4 weeks after end of project reached: mail with surveylink ''' help = '''This command sends mail with some links to the database or to the survey after some amount of time.''' def survey_link(self, email, type, pid, name, realname): context = {'realname': realname, 'type': type, 'name': name, 'pid': pid, 'SURVEYPREFIX': SURVEYPREFIX, } mail_template = get_template('input/survey_mail.txt') try: send_mail('Projektende erreicht', mail_template.render(context), IF_EMAIL, [email], fail_silently=False) except BadHeaderError: return HttpResponse('Invalid header found.') print(f'send surveylinkemail to {email}...') def end_of_projects_reached(self): ''' end of project reached ''' # get all projects which ended old = Project.objects.filter(end__lt = date.today())\ .exclude(end_mail_send = True) mail_template = get_template('input/if_end_of_project.txt') for project in old: context = {'project': project} context['URLPREFIX'] = URLPREFIX try: send_mail('Projektende erreicht', mail_template.render(context), IF_EMAIL, [IF_EMAIL], fail_silently=False) project.end_mail_send = True project.save() except BadHeaderError: self.stdout.write(self.style.ERROR('Invalid header found.')) self.stdout.write(self.style.SUCCESS('end_of_projects_reached() executed.')) def surveymails_to_object(self, supported, name='', type='LIB'): mytype=type myname = name for item in supported: if type == 'LIB': mytype = item.type elif type not in ('MAIL','VIS','LIST'): myname = getattr(item,name) self.survey_link(email=item.email, type=mytype, pid=f'{mytype}{item.pk}', name=myname, realname=item.realname) item.survey_mail_send = True item.save() self.stdout.write(self.style.SUCCESS(f'surveymails for object type {type} sent')) ''' TODO: there could be some more removing of duplicated code in the following functions ''' def surveymails_to_lib(self): '''get all library objects which where granted two weeks ago''' supported = Library.objects.filter(granted=True)\ .filter(granted_date__lt = date.today() - timedelta(days=14))\ .exclude(survey_mail_send=True) self.surveymails_to_object(supported,name='library') def surveymails_to_hon(self): '''get all HonoraryCertificate objects which where granted two weeks ago''' supported = HonoraryCertificate.objects.filter(granted=True)\ .filter(granted_date__lt = date.today() - timedelta(days=14))\ .exclude(survey_mail_send=True) self.surveymails_to_object(supported, type='HON', name='request_url') def surveymails_to_project(self): '''send survey link 4 weeks after end of project reached''' supported = Project.objects.filter(granted=True)\ .filter(granted_date__lt = date.today() - timedelta(days=28))\ .exclude(survey_mail_send=True) self.surveymails_to_object(supported, type='PRO', name='realname') def surveymails_to_travel(self): '''send survey link 3 weeks after end of project reached''' supported = Travel.objects.filter(project__granted=True)\ .filter(project__granted_date__lt = date.today() - timedelta(days=21))\ .exclude(survey_mail_send=True) self.surveymails_to_object(supported, type='TRAV', name='request_url') def surveymails_to_mail_vis_lis(self): '''send survey link 2 weeks after mailadresss, mailinglist or businesscards are granted''' lastdate = date.today() - timedelta(days=14) typefield = ('MAIL','VIS','LIST') count = 0 for c in ('Email', 'BusinessCard', 'List'): # get class via string supported = getattr(sys.modules[__name__], c).objects.filter(granted=True)\ .filter(granted_date__lt = lastdate)\ .exclude(survey_mail_send=True) self.surveymails_to_object(supported, type=typefield[count]) count += 1 def handle(self, *args, **options): '''the main function which is called by the custom command''' self.end_of_projects_reached() self.surveymails_to_lib() self.surveymails_to_hon() self.surveymails_to_project() self.surveymails_to_travel() self.surveymails_to_mail_vis_lis() self.stdout.write(self.style.SUCCESS('sendmails custom command executed'))