from django.shortcuts import render, get_object_or_404
from customercore.decorators import *
from customercore.models import *
from django.core.mail import send_mail
from django.template.loader import render_to_string
from django.utils.html import strip_tags
from django.conf import settings


@customer_login_required
def customer_add_ticket(request, *args, **kwargs):
    customer_orders = Order.objects.filter(customer=request.user.customerprofile)
    customer_orders_with_last_status = customer_orders.annotate(max_status_date=Max('orderstatus__date'))
    customer_orders_completed = customer_orders_with_last_status.filter(orderstatus__status='Completed',orderstatus__date=F('max_status_date'))
    customer_products = OrderItem.objects.filter(active__in=[True, None], item__type = 'Product', order__customer = request.user.customerprofile, order__in=customer_orders_completed )
    customer_projects = Project.objects.filter(customer=request.user.customerprofile)
    support_department = get_object_or_404(Department, name='Support')

    if request.method == 'POST':
        project = None
        product = None
        departments = [support_department]
        regarding = 'General/Account/Billing'
        if request.POST.get('project') and request.POST.get('regarding') == 'Project':
            project = get_object_or_404(Project, id=request.POST.get('project'))
            project_types = project.project_type.all() 
            departments = [project_type.department for project_type in project_types]
            regarding = 'Project/Product'
        elif request.POST.get('product') and request.POST.get('regarding') == 'Product':
            product = get_object_or_404(Item, id=request.POST.get('product'))
            departments = [product.item_type.department]
            regarding = 'Project/Product'
        ticket = Ticket(
            status = 'Open',
            customer = request.user.customerprofile,
            title = request.POST.get('title'),
            description =  request.POST.get('description'),
            regarding = regarding,
            project = project,
            product = product,
            opened_by = request.user,
            opened_date = datetime.now()
        )
        ticket.save()
        ticket.departments.set(departments) 
        
        ticket_status = TicketStatus(
            ticket = ticket,
            status = 'Open',
            added_by = request.user,
            date_added = datetime.now()
        )
        ticket_status.save()
        for file in request.FILES.getlist('files'):
            ticket_attachment = TicketAttachment(
                ticket=ticket,
                file=file
            )
            ticket_attachment.save()


        department_ids = [dept.id for dept in departments]
        staff_profiles = StaffProfile.objects.filter(staff_position__department__id__in=department_ids, active=True)
        print(staff_profiles)
        for staff in staff_profiles:
            subject = f"New Ticket Opened: {ticket.title}"
            html_message = render_to_string('email_templates/new_ticket.html', {
                'ticket': ticket,
                'staff_first_name': staff.user.first_name
            })
            plain_message = strip_tags(html_message)
            from_email = settings.DEFAULT_FROM_EMAIL
            to_email = staff.user.email

            send_mail(subject, plain_message, from_email, [to_email], html_message=html_message)
        return redirect('customerticketdetails', ticket_number=ticket.ticket_number)
    
    context = {
        'customer_products': customer_products,
        'customer_projects': customer_projects,

    }

    return render(request, 'add_templates/customer-add-ticket.html', context)



@customer_login_required
def customer_add_ticket_update(request, ticket_id):
    ticket = get_object_or_404(Ticket, id=ticket_id)


    if request.method == 'POST':
        ticket_update = TicketUpdate(
            ticket = ticket,
            description =  request.POST.get('description'),
            added_by = request.user,
            date_added = datetime.now(),
        )
        ticket_update.save()
        for file in request.FILES.getlist('files'):
            ticket_attachment = TicketAttachment(
                ticket_update=ticket_update,
                file=file
            )
            ticket_attachment.save()

    
        if ticket.ticket_members.exists():
            members_ids = ticket.ticket_members.values_list('id', flat=True)
            staff_profiles = StaffProfile.objects.filter(id__in=members_ids)
        else:
            department_ids = ticket.departments.values_list('id', flat=True)
            staff_profiles = StaffProfile.objects.filter(staff_position__department__id__in=department_ids, active=True)

        
        for staff in staff_profiles:
            subject = f"New Ticket Update: {ticket.title}"
            html_message = render_to_string('email_templates/new_ticket_update.html', {
                'ticket_update': ticket_update,
                'staff_first_name': staff.user.first_name
            })
            plain_message = strip_tags(html_message)
            from_email = settings.DEFAULT_FROM_EMAIL
            to_email = staff.user.email

            send_mail(subject, plain_message, from_email, [to_email], html_message=html_message)


        return redirect('customerticketdetails', ticket_number=ticket.ticket_number)
    
    context = {
        'ticket': ticket,
    }

    return render(request, 'add_templates/customer-add-ticket.html', context)



@customer_login_required
def customer_add_ticket_update_reaction(request, reaction_type, ticketupdate_id):
    ticket_update = get_object_or_404(TicketUpdate, id=ticketupdate_id)
    
    existing_reaction = TicketUpdateReaction.objects.filter(ticket_update=ticket_update, customer=request.user).first()
    
    if existing_reaction:
        # If the existing reaction type is equal to the new reaction, delete it
        if existing_reaction.reaction == reaction_type:
            existing_reaction.delete()
        else:
            # If not, delete all previous reactions and add a new one
            TicketUpdateReaction.objects.filter(ticket_update=ticket_update, customer=request.user).delete()
            reaction = TicketUpdateReaction.objects.create(
                ticket_update=ticket_update, 
                reaction=reaction_type,
                customer=request.user
            )
    else:
        # If there's no existing reaction, simply add the new one
        reaction = TicketUpdateReaction.objects.create(
            ticket_update=ticket_update, 
            reaction=reaction_type,
            customer=request.user
        )
    
    return redirect('customerticketdetails', ticket_number=ticket_update.ticket.ticket_number)