127 lines
6.5 KiB
Python
127 lines
6.5 KiB
Python
from django.shortcuts import render, get_object_or_404, redirect
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from django.contrib.auth.decorators import login_required
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from django.urls import reverse
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from django.utils import timezone
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from decimal import Decimal
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from django.template import Template, Context
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from django.utils.safestring import mark_safe
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from processes.models import ProcessInstance, StepInstance
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from common.consts import UserRoles
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from .models import ContractTemplate, ContractInstance
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from invoices.models import Invoice, Quote
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from _helpers.utils import jalali_converter2
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from django.http import JsonResponse
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def build_contract_context(instance: ProcessInstance) -> dict:
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representative = instance.representative
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profile = getattr(representative, 'profile', None)
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well = instance.well
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# Compute prepayment from Quote-linked invoice payments
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quote = Quote.objects.filter(process_instance=instance).first()
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invoice = Invoice.objects.filter(quote=quote).first() if quote else None
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payments_qs = invoice.payments.filter(is_deleted=False, direction='in').all() if invoice else []
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total_paid = sum((p.amount for p in payments_qs), Decimal('0'))
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try:
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latest_payment_date = max((p.payment_date for p in payments_qs)) if payments_qs else None
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except Exception:
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latest_payment_date = None
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return {
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'customer_full_name': mark_safe(f"<span class=\"fw-bold\">{representative.get_full_name() if representative else ''}</span>"),
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'registration_number': mark_safe(f"<span class=\"fw-bold\">{instance.broker.company.registration_number if instance.broker and instance.broker.company else ''}</span>"),
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'national_code': mark_safe(f"<span class=\"fw-bold\">{profile.national_code if profile else ''}</span>"),
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'address': mark_safe(f"<span class=\"fw-bold\">{profile.address if profile else ''}</span>"),
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'phone': mark_safe(f"<span class=\"fw-bold\">{profile.phone_number_1 if profile else ''}</span>"),
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'phone2': mark_safe(f"<span class=\"fw-bold\">{profile.phone_number_2 if profile else ''}</span>"),
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'water_subscription_number': mark_safe(f"<span class=\"fw-bold\">{well.water_subscription_number if well else ''}</span>"),
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'electricity_subscription_number': mark_safe(f"<span class=\"fw-bold\">{well.electricity_subscription_number if well else ''}</span>"),
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'water_meter_serial_number': mark_safe(f"<span class=\"fw-bold\">{well.water_meter_serial_number if well else ''}</span>"),
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'well_power': mark_safe(f"<span class=\"fw-bold\">{well.well_power if well else ''}</span>"),
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'request_code': mark_safe(f"<span class=\"fw-bold\">{instance.code}</span>"),
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'today': mark_safe(f"<span class=\"fw-bold\">{jalali_converter2(timezone.now())}</span>"),
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'company_name': mark_safe(f"<span class=\"fw-bold\">{instance.broker.company.name if instance.broker and instance.broker.company else ''}</span>"),
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'city_name': mark_safe(f"<span class=\"fw-bold\">{instance.broker.affairs.county.city.name if instance.broker and instance.broker.affairs and instance.broker.affairs.county and instance.broker.affairs.county.city else ''}</span>"),
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'card_number': mark_safe(f"<span class=\"fw-bold\">{instance.representative.profile.card_number if instance.representative else ''}</span>"),
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'account_number': mark_safe(f"<span class=\"fw-bold\">{instance.representative.profile.account_number if instance.representative else ''}</span>"),
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'bank_name': mark_safe(f"<span class=\"fw-bold\">{instance.representative.profile.get_bank_name_display() if instance.representative else ''}</span>"),
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'prepayment_amount': mark_safe(f"<span class=\"fw-bold\">{int(total_paid):,}</span>"),
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'prepayment_date': mark_safe(f"<span class=\"fw-bold\">{jalali_converter2(latest_payment_date)}</span>") if latest_payment_date else '',
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}
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@login_required
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def contract_step(request, instance_id, step_id):
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instance = get_object_or_404(ProcessInstance, id=instance_id)
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# Resolve step navigation
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step = get_object_or_404(instance.process.steps, id=step_id)
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previous_step = instance.process.steps.filter(order__lt=step.order).last()
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next_step = instance.process.steps.filter(order__gt=step.order).first()
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profile = getattr(request.user, 'profile', None)
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is_broker = False
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can_view_contract_body = True
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try:
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is_broker = bool(profile and profile.has_role(UserRoles.BROKER))
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if profile and profile.has_role(UserRoles.INSTALLER):
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can_view_contract_body = False
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except Exception:
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pass
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template_obj = ContractTemplate.objects.first()
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if not template_obj:
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return render(request, 'contracts/contract_missing.html', {'instance': instance})
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ctx = build_contract_context(instance)
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rendered = Template(template_obj.body).render(Context(ctx))
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contract, _ = ContractInstance.objects.get_or_create(
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process_instance=instance,
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defaults={
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'template': template_obj,
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'rendered_body': rendered,
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'created_by': request.user,
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}
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)
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# keep latest rendering if template changed (optional)
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contract.template = template_obj
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contract.rendered_body = rendered
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contract.save()
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# If user submits to go next, only broker can complete and go to next
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if request.method == 'POST':
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if not is_broker:
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return JsonResponse({'success': False, 'message': 'شما مجوز تایید این مرحله را ندارید'}, status=403)
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StepInstance.objects.update_or_create(
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process_instance=instance,
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step=step,
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defaults={'status': 'completed', 'completed_at': timezone.now()}
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)
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if next_step:
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instance.current_step = next_step
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instance.save()
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return redirect('processes:step_detail', instance_id=instance.id, step_id=next_step.id)
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return redirect('processes:request_list')
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return render(request, 'contracts/contract_step.html', {
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'instance': instance,
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'step': step,
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'contract': contract,
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'template': template_obj,
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'previous_step': previous_step,
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'next_step': next_step,
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'is_broker': is_broker,
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'can_view_contract_body': can_view_contract_body,
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})
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@login_required
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def contract_print(request, instance_id):
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instance = get_object_or_404(ProcessInstance, id=instance_id)
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contract = get_object_or_404(ContractInstance, process_instance=instance)
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return render(request, 'contracts/contract_print.html', {
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'instance': instance,
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'contract': contract,
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})
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