NDOJ/chat_box/views.py

from django.utils.translation import gettext as _
from django.views.generic import ListView
from django.http import HttpResponse, JsonResponse
from django.core.paginator import Paginator

from judge.jinja2.gravatar import gravatar
from .models import Message
import json


def format_time(time):
    return time.strftime('%H:%M %p  %d-%m-%Y')


def format_messages(messages):
    msg_list = [{
        'time': format_time(msg.time),
        'author': str(msg.author),
        'body': msg.body,
        'image': gravatar(msg.author, 32),
    } for msg in messages]
    return json.dumps(msg_list)


class ChatView(ListView):
    model = Message
    context_object_name = 'message'
    template_name = 'chat/chat.html'
    title = _('Chat Box')
    paginate_by = 50
    paginator = Paginator(Message.objects.filter(hidden=False), paginate_by)

    def get(self, request, *args, **kwargs):
        page = request.GET.get('page')
        if (page == None):
            return super().get(request, *args, **kwargs)

        cur_page = self.paginator.get_page(page)
        return HttpResponse(format_messages(cur_page.object_list))

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['title'] = self.title

        for msg in context['message']:
            msg.time = format_time(msg.time)

        return context

def delete_message(request):
    ret = {'delete': 'done'}
    
    if request.method == 'GET':
        return JsonResponse(ret)

    if request.user.is_staff:
        author = request.POST.get('author')
        time = request.POST.get('messtime')
        all_mess = Message.objects.all()
        
        for mess in all_mess:
            if mess.author.__str__() == author and format_time(mess.time) == time:
                mess.hidden = True
                mess.save()
                new_elt = {'time': format_time(mess.time), 'content': mess.body}
                ret = new_elt
        
        return JsonResponse(ret)
    
    return JsonResponse(ret)