Marwan Alwali 23158e9fbf update
2025-09-08 03:00:23 +03:00

906 lines
29 KiB
Python

# """
# Viewflow workflows for inventory app.
# Provides inventory management, procurement, and supply chain workflows.
# """
#
# from viewflow import Flow, lock
# from viewflow.base import this, flow_func
# from viewflow.contrib import celery
# from viewflow.decorators import flow_view
# from viewflow.fields import CharField, ModelField
# from viewflow.forms import ModelForm
# from viewflow.views import CreateProcessView, UpdateProcessView
# from viewflow.models import Process, Task
# from django.contrib.auth.models import User
# from django.urls import reverse_lazy
# from django.utils import timezone
# from django.db import transaction
# from django.core.mail import send_mail
#
# from .models import InventoryItem, PurchaseOrder, PurchaseOrderItem, Supplier, InventoryStock, InventoryLocation
# from .views import (
# PurchaseRequestView, VendorSelectionView, PurchaseOrderCreationView,
# ApprovalView, OrderSubmissionView, ReceivingView, InspectionView,
# StockUpdateView, InvoiceMatchingView, PaymentProcessingView,
# StockReplenishmentView, StockTransferView, StockAdjustmentView,
# CycleCountView, InventoryAuditView
# )
#
#
# class ProcurementProcess(Process):
# """
# Viewflow process model for procurement
# """
# purchase_order = ModelField(PurchaseOrder, help_text='Associated purchase order')
#
# # Process status tracking
# request_submitted = models.BooleanField(default=False)
# vendor_selected = models.BooleanField(default=False)
# order_created = models.BooleanField(default=False)
# order_approved = models.BooleanField(default=False)
# order_sent = models.BooleanField(default=False)
# goods_received = models.BooleanField(default=False)
# invoice_processed = models.BooleanField(default=False)
# payment_completed = models.BooleanField(default=False)
# procurement_closed = models.BooleanField(default=False)
#
# class Meta:
# verbose_name = 'Procurement Process'
# verbose_name_plural = 'Procurement Processes'
#
#
# class ProcurementFlow(Flow):
# """
# Procurement Workflow
#
# This flow manages the complete procurement process from purchase
# request through payment and order closure.
# """
#
# process_class = ProcurementProcess
#
# # Flow definition
# start = (
# flow_func(this.start_procurement)
# .Next(this.submit_request)
# )
#
# submit_request = (
# flow_view(PurchaseRequestView)
# .Permission('inventory.can_submit_purchase_requests')
# .Next(this.select_vendor)
# )
#
# select_vendor = (
# flow_view(VendorSelectionView)
# .Permission('inventory.can_select_vendors')
# .Next(this.create_order)
# )
#
# create_order = (
# flow_view(PurchaseOrderCreationView)
# .Permission('inventory.can_create_purchase_orders')
# .Next(this.approve_order)
# )
#
# approve_order = (
# flow_view(ApprovalView)
# .Permission('inventory.can_approve_purchase_orders')
# .Next(this.send_order)
# )
#
# send_order = (
# flow_view(OrderSubmissionView)
# .Permission('inventory.can_send_purchase_orders')
# .Next(this.receive_goods)
# )
#
# receive_goods = (
# flow_view(ReceivingView)
# .Permission('inventory.can_receive_goods')
# .Next(this.inspect_goods)
# )
#
# inspect_goods = (
# flow_view(InspectionView)
# .Permission('inventory.can_inspect_goods')
# .Next(this.update_stock)
# )
#
# update_stock = (
# flow_view(StockUpdateView)
# .Permission('inventory.can_update_stock')
# .Next(this.process_invoice)
# )
#
# process_invoice = (
# flow_view(InvoiceMatchingView)
# .Permission('inventory.can_process_invoices')
# .Next(this.process_payment)
# )
#
# process_payment = (
# flow_view(PaymentProcessingView)
# .Permission('inventory.can_process_payments')
# .Next(this.close_order)
# )
#
# close_order = (
# flow_func(this.complete_procurement)
# .Next(this.end)
# )
#
# end = flow_func(this.end_procurement)
#
# # Flow functions
# def start_procurement(self, activation):
# """Initialize the procurement process"""
# process = activation.process
# order = process.purchase_order
#
# # Update order status
# order.status = 'DRAFT'
# order.save()
#
# # Send notification to procurement staff
# self.notify_procurement_staff(order)
#
# # Check for urgent orders
# if order.priority in ['HIGH', 'URGENT']:
# self.notify_urgent_procurement(order)
#
# def complete_procurement(self, activation):
# """Finalize the procurement process"""
# process = activation.process
# order = process.purchase_order
#
# # Update order status
# order.status = 'CLOSED'
# order.save()
#
# # Mark process as completed
# process.procurement_closed = True
# process.save()
#
# # Send completion notifications
# self.notify_procurement_completion(order)
#
# # Update supplier performance metrics
# self.update_supplier_performance(order)
#
# # Update procurement metrics
# self.update_procurement_metrics(order)
#
# def end_procurement(self, activation):
# """End the procurement workflow"""
# process = activation.process
#
# # Generate procurement summary report
# self.generate_procurement_summary(process.purchase_order)
#
# # Helper methods
# def notify_procurement_staff(self, order):
# """Notify procurement staff of new order"""
# from django.contrib.auth.models import Group
#
# procurement_staff = User.objects.filter(
# groups__name='Procurement Staff'
# )
#
# for staff in procurement_staff:
# send_mail(
# subject=f'New Purchase Order: {order.po_number}',
# message=f'New purchase order for {order.supplier.name} requires processing.',
# from_email='procurement@hospital.com',
# recipient_list=[staff.email],
# fail_silently=True
# )
#
# def notify_urgent_procurement(self, order):
# """Notify of urgent procurement"""
# procurement_managers = User.objects.filter(
# groups__name='Procurement Managers'
# )
#
# for manager in procurement_managers:
# send_mail(
# subject=f'URGENT Purchase Order: {order.po_number}',
# message=f'{order.get_priority_display()} purchase order requires immediate attention.',
# from_email='procurement@hospital.com',
# recipient_list=[manager.email],
# fail_silently=True
# )
#
# def notify_procurement_completion(self, order):
# """Notify procurement completion"""
# # Notify requestor
# if order.requested_by and order.requested_by.email:
# send_mail(
# subject=f'Purchase Order Complete: {order.po_number}',
# message=f'Your purchase order has been completed and goods received.',
# from_email='procurement@hospital.com',
# recipient_list=[order.requested_by.email],
# fail_silently=True
# )
#
# def update_supplier_performance(self, order):
# """Update supplier performance metrics"""
# supplier = order.supplier
#
# # Calculate on-time delivery
# if order.actual_delivery_date and order.promised_delivery_date:
# if order.actual_delivery_date <= order.promised_delivery_date:
# # Update on-time delivery rate
# pass
#
# # This would update comprehensive supplier metrics
# pass
#
# def update_procurement_metrics(self, order):
# """Update procurement performance metrics"""
# # This would update procurement cycle time and other metrics
# pass
#
# def generate_procurement_summary(self, order):
# """Generate procurement summary report"""
# # This would generate a comprehensive procurement report
# pass
#
#
# class InventoryReplenishmentProcess(Process):
# """
# Viewflow process model for inventory replenishment
# """
# inventory_item = ModelField(InventoryItem, help_text='Associated inventory item')
#
# # Process status tracking
# reorder_triggered = models.BooleanField(default=False)
# demand_analyzed = models.BooleanField(default=False)
# quantity_calculated = models.BooleanField(default=False)
# supplier_contacted = models.BooleanField(default=False)
# order_placed = models.BooleanField(default=False)
# delivery_scheduled = models.BooleanField(default=False)
# stock_replenished = models.BooleanField(default=False)
#
# class Meta:
# verbose_name = 'Inventory Replenishment Process'
# verbose_name_plural = 'Inventory Replenishment Processes'
#
#
# class InventoryReplenishmentFlow(Flow):
# """
# Inventory Replenishment Workflow
#
# This flow manages automatic and manual inventory replenishment
# including demand analysis and supplier coordination.
# """
#
# process_class = InventoryReplenishmentProcess
#
# # Flow definition
# start = (
# flow_func(this.start_replenishment)
# .Next(this.trigger_reorder)
# )
#
# trigger_reorder = (
# flow_func(this.check_reorder_point)
# .Next(this.analyze_demand)
# )
#
# analyze_demand = (
# flow_view(DemandAnalysisView)
# .Permission('inventory.can_analyze_demand')
# .Next(this.calculate_quantity)
# )
#
# calculate_quantity = (
# flow_view(QuantityCalculationView)
# .Permission('inventory.can_calculate_quantities')
# .Next(this.contact_supplier)
# )
#
# contact_supplier = (
# flow_view(SupplierContactView)
# .Permission('inventory.can_contact_suppliers')
# .Next(this.place_order)
# )
#
# place_order = (
# flow_view(OrderPlacementView)
# .Permission('inventory.can_place_orders')
# .Next(this.schedule_delivery)
# )
#
# schedule_delivery = (
# flow_view(DeliverySchedulingView)
# .Permission('inventory.can_schedule_deliveries')
# .Next(this.replenish_stock)
# )
#
# replenish_stock = (
# flow_func(this.complete_replenishment)
# .Next(this.end)
# )
#
# end = flow_func(this.end_replenishment)
#
# # Flow functions
# def start_replenishment(self, activation):
# """Initialize the replenishment process"""
# process = activation.process
# item = process.inventory_item
#
# # Send notification to inventory staff
# self.notify_replenishment_needed(item)
#
# def check_reorder_point(self, activation):
# """Check if item has reached reorder point"""
# process = activation.process
# item = process.inventory_item
#
# # Check current stock levels
# current_stock = item.total_stock
#
# if current_stock <= item.reorder_point:
# process.reorder_triggered = True
# process.save()
#
# # Send urgent notification if below safety stock
# if current_stock <= item.safety_stock:
# self.notify_critical_stock(item)
#
# def complete_replenishment(self, activation):
# """Finalize the replenishment process"""
# process = activation.process
# item = process.inventory_item
#
# # Mark process as completed
# process.stock_replenished = True
# process.save()
#
# # Send completion notifications
# self.notify_replenishment_completion(item)
#
# # Update inventory metrics
# self.update_inventory_metrics(item)
#
# def end_replenishment(self, activation):
# """End the replenishment workflow"""
# process = activation.process
#
# # Generate replenishment summary
# self.generate_replenishment_summary(process.inventory_item)
#
# # Helper methods
# def notify_replenishment_needed(self, item):
# """Notify inventory staff of replenishment need"""
# inventory_staff = User.objects.filter(
# groups__name='Inventory Staff'
# )
#
# for staff in inventory_staff:
# send_mail(
# subject=f'Replenishment Needed: {item.item_name}',
# message=f'Item {item.item_code} has reached reorder point.',
# from_email='inventory@hospital.com',
# recipient_list=[staff.email],
# fail_silently=True
# )
#
# def notify_critical_stock(self, item):
# """Notify of critical stock levels"""
# inventory_managers = User.objects.filter(
# groups__name='Inventory Managers'
# )
#
# for manager in inventory_managers:
# send_mail(
# subject=f'CRITICAL STOCK: {item.item_name}',
# message=f'Item {item.item_code} is below safety stock level.',
# from_email='inventory@hospital.com',
# recipient_list=[manager.email],
# fail_silently=True
# )
#
# def notify_replenishment_completion(self, item):
# """Notify replenishment completion"""
# # This would notify relevant staff
# pass
#
# def update_inventory_metrics(self, item):
# """Update inventory performance metrics"""
# # This would update inventory turnover and other metrics
# pass
#
# def generate_replenishment_summary(self, item):
# """Generate replenishment summary"""
# # This would generate replenishment summary
# pass
#
#
# class StockMovementProcess(Process):
# """
# Viewflow process model for stock movements
# """
# movement_type = CharField(max_length=20, help_text='Type of stock movement')
# item_id = CharField(max_length=50, help_text='Item identifier')
#
# # Process status tracking
# movement_initiated = models.BooleanField(default=False)
# authorization_verified = models.BooleanField(default=False)
# stock_reserved = models.BooleanField(default=False)
# movement_executed = models.BooleanField(default=False)
# documentation_completed = models.BooleanField(default=False)
# movement_verified = models.BooleanField(default=False)
#
# class Meta:
# verbose_name = 'Stock Movement Process'
# verbose_name_plural = 'Stock Movement Processes'
#
#
# class StockMovementFlow(Flow):
# """
# Stock Movement Workflow
#
# This flow manages stock transfers, adjustments, and other
# inventory movements with proper authorization and tracking.
# """
#
# process_class = StockMovementProcess
#
# # Flow definition
# start = (
# flow_func(this.start_movement)
# .Next(this.initiate_movement)
# )
#
# initiate_movement = (
# flow_view(MovementInitiationView)
# .Permission('inventory.can_initiate_movements')
# .Next(this.verify_authorization)
# )
#
# verify_authorization = (
# flow_view(AuthorizationVerificationView)
# .Permission('inventory.can_verify_authorization')
# .Next(this.reserve_stock)
# )
#
# reserve_stock = (
# flow_view(StockReservationView)
# .Permission('inventory.can_reserve_stock')
# .Next(this.execute_movement)
# )
#
# execute_movement = (
# flow_view(MovementExecutionView)
# .Permission('inventory.can_execute_movements')
# .Next(this.complete_documentation)
# )
#
# complete_documentation = (
# flow_view(DocumentationView)
# .Permission('inventory.can_complete_documentation')
# .Next(this.verify_movement)
# )
#
# verify_movement = (
# flow_view(MovementVerificationView)
# .Permission('inventory.can_verify_movements')
# .Next(this.finalize_movement)
# )
#
# finalize_movement = (
# flow_func(this.complete_movement)
# .Next(this.end)
# )
#
# end = flow_func(this.end_movement)
#
# # Flow functions
# def start_movement(self, activation):
# """Initialize the stock movement process"""
# process = activation.process
#
# # Send notification to inventory staff
# self.notify_movement_initiated(process.movement_type, process.item_id)
#
# def complete_movement(self, activation):
# """Finalize the stock movement process"""
# process = activation.process
#
# # Mark process as completed
# process.movement_verified = True
# process.save()
#
# # Send completion notifications
# self.notify_movement_completion(process.movement_type, process.item_id)
#
# # Update inventory records
# self.update_inventory_records(process.movement_type, process.item_id)
#
# def end_movement(self, activation):
# """End the stock movement workflow"""
# process = activation.process
#
# # Generate movement summary
# self.generate_movement_summary(process.movement_type, process.item_id)
#
# # Helper methods
# def notify_movement_initiated(self, movement_type, item_id):
# """Notify inventory staff of movement initiation"""
# inventory_staff = User.objects.filter(
# groups__name='Inventory Staff'
# )
#
# for staff in inventory_staff:
# send_mail(
# subject=f'Stock Movement Initiated: {item_id}',
# message=f'{movement_type} movement initiated for item {item_id}.',
# from_email='inventory@hospital.com',
# recipient_list=[staff.email],
# fail_silently=True
# )
#
# def notify_movement_completion(self, movement_type, item_id):
# """Notify movement completion"""
# # This would notify relevant staff
# pass
#
# def update_inventory_records(self, movement_type, item_id):
# """Update inventory records"""
# # This would update inventory records
# pass
#
# def generate_movement_summary(self, movement_type, item_id):
# """Generate movement summary"""
# # This would generate movement summary
# pass
#
#
# class InventoryAuditProcess(Process):
# """
# Viewflow process model for inventory audits
# """
# audit_type = CharField(max_length=20, help_text='Type of audit')
# location_id = CharField(max_length=50, help_text='Location identifier')
#
# # Process status tracking
# audit_scheduled = models.BooleanField(default=False)
# audit_team_assigned = models.BooleanField(default=False)
# physical_count_completed = models.BooleanField(default=False)
# discrepancies_identified = models.BooleanField(default=False)
# adjustments_made = models.BooleanField(default=False)
# audit_report_generated = models.BooleanField(default=False)
# audit_completed = models.BooleanField(default=False)
#
# class Meta:
# verbose_name = 'Inventory Audit Process'
# verbose_name_plural = 'Inventory Audit Processes'
#
#
# class InventoryAuditFlow(Flow):
# """
# Inventory Audit Workflow
#
# This flow manages inventory audits including cycle counts,
# physical inventories, and discrepancy resolution.
# """
#
# process_class = InventoryAuditProcess
#
# # Flow definition
# start = (
# flow_func(this.start_audit)
# .Next(this.schedule_audit)
# )
#
# schedule_audit = (
# flow_view(AuditSchedulingView)
# .Permission('inventory.can_schedule_audits')
# .Next(this.assign_team)
# )
#
# assign_team = (
# flow_view(TeamAssignmentView)
# .Permission('inventory.can_assign_audit_teams')
# .Next(this.conduct_count)
# )
#
# conduct_count = (
# flow_view(CycleCountView)
# .Permission('inventory.can_conduct_counts')
# .Next(this.identify_discrepancies)
# )
#
# identify_discrepancies = (
# flow_func(this.analyze_discrepancies)
# .Next(this.make_adjustments)
# )
#
# make_adjustments = (
# flow_view(InventoryAdjustmentView)
# .Permission('inventory.can_make_adjustments')
# .Next(this.generate_report)
# )
#
# generate_report = (
# flow_view(AuditReportView)
# .Permission('inventory.can_generate_audit_reports')
# .Next(this.complete_audit)
# )
#
# complete_audit = (
# flow_func(this.finalize_audit)
# .Next(this.end)
# )
#
# end = flow_func(this.end_audit)
#
# # Flow functions
# def start_audit(self, activation):
# """Initialize the audit process"""
# process = activation.process
#
# # Send notification to audit team
# self.notify_audit_scheduled(process.audit_type, process.location_id)
#
# def analyze_discrepancies(self, activation):
# """Analyze inventory discrepancies"""
# process = activation.process
#
# # Check for discrepancies
# discrepancies = self.check_discrepancies(process.location_id)
#
# if discrepancies:
# process.discrepancies_identified = True
# process.save()
#
# # Alert audit supervisor
# self.alert_audit_supervisor(process.location_id, discrepancies)
#
# def finalize_audit(self, activation):
# """Finalize the audit process"""
# process = activation.process
#
# # Mark audit as completed
# process.audit_completed = True
# process.save()
#
# # Send completion notifications
# self.notify_audit_completion(process.audit_type, process.location_id)
#
# # Update audit metrics
# self.update_audit_metrics(process.audit_type, process.location_id)
#
# def end_audit(self, activation):
# """End the audit workflow"""
# process = activation.process
#
# # Generate audit summary
# self.generate_audit_summary(process.audit_type, process.location_id)
#
# # Helper methods
# def notify_audit_scheduled(self, audit_type, location_id):
# """Notify audit team of scheduled audit"""
# audit_staff = User.objects.filter(
# groups__name='Audit Staff'
# )
#
# for staff in audit_staff:
# send_mail(
# subject=f'Audit Scheduled: {location_id}',
# message=f'{audit_type} audit scheduled for location {location_id}.',
# from_email='audit@hospital.com',
# recipient_list=[staff.email],
# fail_silently=True
# )
#
# def check_discrepancies(self, location_id):
# """Check for inventory discrepancies"""
# # This would implement discrepancy checking logic
# return []
#
# def alert_audit_supervisor(self, location_id, discrepancies):
# """Alert audit supervisor of discrepancies"""
# supervisors = User.objects.filter(
# groups__name='Audit Supervisors'
# )
#
# for supervisor in supervisors:
# send_mail(
# subject=f'Audit Discrepancies Found: {location_id}',
# message=f'Inventory discrepancies identified during audit.',
# from_email='audit@hospital.com',
# recipient_list=[supervisor.email],
# fail_silently=True
# )
#
# def notify_audit_completion(self, audit_type, location_id):
# """Notify audit completion"""
# # This would notify relevant parties
# pass
#
# def update_audit_metrics(self, audit_type, location_id):
# """Update audit metrics"""
# # This would update audit performance metrics
# pass
#
# def generate_audit_summary(self, audit_type, location_id):
# """Generate audit summary"""
# # This would generate audit summary
# pass
#
#
# class SupplierManagementProcess(Process):
# """
# Viewflow process model for supplier management
# """
# supplier = ModelField(Supplier, help_text='Associated supplier')
#
# # Process status tracking
# supplier_onboarded = models.BooleanField(default=False)
# qualifications_verified = models.BooleanField(default=False)
# contracts_negotiated = models.BooleanField(default=False)
# performance_monitored = models.BooleanField(default=False)
# relationship_maintained = models.BooleanField(default=False)
#
# class Meta:
# verbose_name = 'Supplier Management Process'
# verbose_name_plural = 'Supplier Management Processes'
#
#
# class SupplierManagementFlow(Flow):
# """
# Supplier Management Workflow
#
# This flow manages supplier onboarding, qualification,
# performance monitoring, and relationship management.
# """
#
# process_class = SupplierManagementProcess
#
# # Flow definition
# start = (
# flow_func(this.start_supplier_management)
# .Next(this.onboard_supplier)
# )
#
# onboard_supplier = (
# flow_view(SupplierOnboardingView)
# .Permission('inventory.can_onboard_suppliers')
# .Next(this.verify_qualifications)
# )
#
# verify_qualifications = (
# flow_view(QualificationVerificationView)
# .Permission('inventory.can_verify_qualifications')
# .Next(this.negotiate_contracts)
# )
#
# negotiate_contracts = (
# flow_view(ContractNegotiationView)
# .Permission('inventory.can_negotiate_contracts')
# .Next(this.monitor_performance)
# )
#
# monitor_performance = (
# flow_view(PerformanceMonitoringView)
# .Permission('inventory.can_monitor_performance')
# .Next(this.maintain_relationship)
# )
#
# maintain_relationship = (
# flow_func(this.complete_supplier_management)
# .Next(this.end)
# )
#
# end = flow_func(this.end_supplier_management)
#
# # Flow functions
# def start_supplier_management(self, activation):
# """Initialize the supplier management process"""
# process = activation.process
# supplier = process.supplier
#
# # Send notification to procurement team
# self.notify_supplier_onboarding(supplier)
#
# def complete_supplier_management(self, activation):
# """Finalize the supplier management process"""
# process = activation.process
# supplier = process.supplier
#
# # Mark process as completed
# process.relationship_maintained = True
# process.save()
#
# # Send completion notifications
# self.notify_supplier_management_completion(supplier)
#
# def end_supplier_management(self, activation):
# """End the supplier management workflow"""
# process = activation.process
#
# # Generate supplier management summary
# self.generate_supplier_summary(process.supplier)
#
# # Helper methods
# def notify_supplier_onboarding(self, supplier):
# """Notify procurement team of supplier onboarding"""
# procurement_staff = User.objects.filter(
# groups__name='Procurement Staff'
# )
#
# for staff in procurement_staff:
# send_mail(
# subject=f'Supplier Onboarding: {supplier.name}',
# message=f'New supplier {supplier.name} requires onboarding.',
# from_email='procurement@hospital.com',
# recipient_list=[staff.email],
# fail_silently=True
# )
#
# def notify_supplier_management_completion(self, supplier):
# """Notify supplier management completion"""
# # This would notify relevant parties
# pass
#
# def generate_supplier_summary(self, supplier):
# """Generate supplier management summary"""
# # This would generate supplier summary
# pass
#
#
# # Celery tasks for background processing
# @celery.job
# def auto_reorder_items():
# """Background task to automatically reorder items"""
# try:
# # This would check reorder points and create orders
# return True
# except Exception:
# return False
#
#
# @celery.job
# def monitor_expiring_items():
# """Background task to monitor expiring inventory items"""
# try:
# # This would identify items nearing expiration
# return True
# except Exception:
# return False
#
#
# @celery.job
# def generate_inventory_reports():
# """Background task to generate inventory reports"""
# try:
# # This would generate daily inventory reports
# return True
# except Exception:
# return False
#
#
# @celery.job
# def update_supplier_performance():
# """Background task to update supplier performance metrics"""
# try:
# # This would calculate supplier performance metrics
# return True
# except Exception:
# return False
#
#
# @celery.job
# def schedule_cycle_counts():
# """Background task to schedule cycle counts"""
# try:
# # This would schedule regular cycle counts
# return True
# except Exception:
# return False
#