complete first version of main proccess

contracts/views.py

@@ -0,0 +1,89 @@
+from django.shortcuts import render, get_object_or_404, redirect
+from django.contrib.auth.decorators import login_required
+from django.urls import reverse
+from django.utils import timezone
+from django.template import Template, Context
+from processes.models import ProcessInstance, StepInstance
+from .models import ContractTemplate, ContractInstance
+from _helpers.utils import jalali_converter2
+
+
+def build_contract_context(instance: ProcessInstance) -> dict:
+    representative = instance.representative
+    profile = getattr(representative, 'profile', None)
+    well = instance.well
+    return {
+        'customer_full_name': representative.get_full_name() if representative else '',
+        'national_code': profile.national_code if profile else '',
+        'address': profile.address if profile else '',
+        'phone': profile.phone_number_1 if profile else '',
+        'phone2': profile.phone_number_2 if profile else '',
+        'water_subscription_number': well.water_subscription_number if well else '',
+        'electricity_subscription_number': well.electricity_subscription_number if well else '',
+        'water_meter_serial_number': well.water_meter_serial_number if well else '',
+        'well_power': well.well_power if well else '',
+        'request_code': instance.code,
+        'today': jalali_converter2(timezone.now()),
+    }
+
+
+@login_required
+def contract_step(request, instance_id, step_id):
+    instance = get_object_or_404(ProcessInstance, id=instance_id)
+    # Resolve step navigation
+    step = get_object_or_404(instance.process.steps, id=step_id)
+    previous_step = instance.process.steps.filter(order__lt=step.order).last()
+    next_step = instance.process.steps.filter(order__gt=step.order).first()
+    template_obj = ContractTemplate.objects.first()
+    if not template_obj:
+        return render(request, 'contracts/contract_missing.html', {'instance': instance})
+
+    ctx = build_contract_context(instance)
+    rendered = Template(template_obj.body).render(Context(ctx))
+
+    contract, _ = ContractInstance.objects.get_or_create(
+        process_instance=instance,
+        defaults={
+            'template': template_obj,
+            'rendered_body': rendered,
+            'created_by': request.user,
+        }
+    )
+    # keep latest rendering if template changed (optional)
+    contract.template = template_obj
+    contract.rendered_body = rendered
+    contract.save()
+
+    # If user submits to go next, mark this step completed and go to next
+    if request.method == 'POST':
+        StepInstance.objects.update_or_create(
+            process_instance=instance,
+            step=step,
+            defaults={'status': 'completed', 'completed_at': timezone.now()}
+        )
+        if next_step:
+            instance.current_step = next_step
+            instance.save()
+            return redirect('processes:step_detail', instance_id=instance.id, step_id=next_step.id)
+        return redirect('processes:request_list')
+
+    return render(request, 'contracts/contract_step.html', {
+        'instance': instance,
+        'step': step,
+        'contract': contract,
+        'template': template_obj,
+        'previous_step': previous_step,
+        'next_step': next_step,
+    })
+
+
+@login_required
+def contract_print(request, instance_id):
+    instance = get_object_or_404(ProcessInstance, id=instance_id)
+    contract = get_object_or_404(ContractInstance, process_instance=instance)
+    return render(request, 'contracts/contract_print.html', {
+        'instance': instance,
+        'contract': contract,
+    })
+
+