from rest_framework import serializers from decimal import Decimal from apps.orders.models import Order, OrderDetail, OrderProduct, ManufacturingOrder from apps.product.api.serializers import ProductSerializer from apps.shipment.api.serializers import ShipmentSerializer from apps.production.api.serializers import ProductionOrderSerializer from apps.payment.api.serializers import PaymentSerializer class OrderProductSerializer(serializers.ModelSerializer): """Serializer para Productos asociados a un detalle de pedido.""" product = ProductSerializer(read_only=True) product_id = serializers.PrimaryKeyRelatedField( queryset=ProductSerializer.Meta.model.objects.filter(is_deleted=False), source='product', write_only=True ) class Meta: model = OrderProduct fields = [ 'id', 'order_detail', 'product', 'product_id', 'price_at_order', 'created_at', 'updated_at', ] read_only_fields = ['id', 'order_detail', 'price_at_order', 'created_at', 'updated_at'] class OrderDetailSerializer(serializers.ModelSerializer): """Serializer para Detalles del pedido.""" order_products = OrderProductSerializer(many=True, read_only=True) class Meta: model = OrderDetail fields = [ 'id', 'order', 'quantity', 'unit_price', 'final_price', 'notes', 'order_products', 'created_at', 'updated_at', ] read_only_fields = ['id', 'order', 'final_price', 'order_products', 'created_at', 'updated_at'] class ManufacturingOrderSerializer(serializers.ModelSerializer): """Serializer para Órdenes de fabricación.""" issued_by = serializers.StringRelatedField(read_only=True) class Meta: model = ManufacturingOrder fields = [ 'id', 'order', 'status', 'iteration', 'issued_by', 'issued_at', 'completed_at', 'notes', 'created_at', 'updated_at', ] read_only_fields = ['id', 'order', 'iteration', 'issued_by', 'issued_at', 'created_at', 'updated_at'] class OrderSerializer(serializers.ModelSerializer): """Serializer para la cabecera y el detalle completo de un Pedido.""" user = serializers.StringRelatedField(read_only=True) client = serializers.SerializerMethodField(read_only=True) status_label = serializers.CharField(source='get_status_display', read_only=True) # --- Nuevos campos para la vista OMS --- total_price_bs = serializers.DecimalField(max_digits=14, decimal_places=2, read_only=True) payment_method_label = serializers.SerializerMethodField(read_only=True) payment_summary = serializers.SerializerMethodField(read_only=True) timeline = serializers.SerializerMethodField(read_only=True) details = OrderDetailSerializer(many=True, read_only=True) payments = PaymentSerializer(many=True, read_only=True) manufacturing_orders = ManufacturingOrderSerializer(many=True, read_only=True) production_orders = ProductionOrderSerializer(many=True, read_only=True) shipments = ShipmentSerializer(many=True, read_only=True) class Meta: model = Order fields = [ 'id', 'order_number', 'user', 'client', 'status', 'status_label', 'total_price', 'bcv_rate', 'total_price_bs', 'payment_method_label', 'payment_summary', 'timeline', 'notes', 'reception_notes', 'reception_date', 'details', 'payments', 'manufacturing_orders', 'production_orders', 'shipments', 'created_at', 'updated_at', ] read_only_fields = [ 'id', 'order_number', 'user', 'client', 'status_label', 'total_price', 'total_price_bs', 'reception_date', 'details', 'payments', 'manufacturing_orders', 'production_orders', 'shipments', 'created_at', 'updated_at' ] def get_client(self, obj): if obj.user: u = obj.user first_name = u.first_name or "" last_name = getattr(u, 'first_last_name', '') or u.last_name or "" full_name = f"{first_name} {last_name}".strip() name = full_name or u.get_full_name() or u.username or "Cliente" return { "id": u.id, "name": name, "email": u.email or "", "phone": getattr(u, 'phone', '') or "" } return {"id": None, "name": "Cliente", "email": "", "phone": ""} def get_payment_method_label(self, obj): """Extrae el método de pago del primer pago registrado para la tarjeta superior.""" first_payment = obj.payments.filter(is_deleted=False).first() return first_payment.get_payment_method_display() if first_payment else "No especificado" def get_payment_summary(self, obj): """Desglose automático para las dos tarjetas de pagos (Inicial y Final).""" rate = obj.bcv_rate or Decimal('1.00') initial_target = (obj.total_price / Decimal('2')).quantize(Decimal('0.01')) initial_payment = obj.payments.filter(payment_stage='initial', is_deleted=False).first() final_payment = obj.payments.filter(payment_stage='final', is_deleted=False).first() return { "initial": { "amount_usd": initial_payment.amount if initial_payment else initial_target, "amount_bs": ((initial_payment.amount if initial_payment else initial_target) * rate).quantize(Decimal('0.01')), "status": initial_payment.status if initial_payment else "pending", "status_label": initial_payment.get_status_display() if initial_payment else "Pendiente", "reference": initial_payment.reference_number if initial_payment else None, "receipt_url": initial_payment.receipt_file.url if (initial_payment and initial_payment.receipt_file) else None, }, "final": { "amount_usd": final_payment.amount if final_payment else obj.pending_balance, "amount_bs": ((final_payment.amount if final_payment else obj.pending_balance) * rate).quantize(Decimal('0.01')), "status": final_payment.status if final_payment else "pending", "status_label": final_payment.get_status_display() if final_payment else "Pendiente", "reference": final_payment.reference_number if final_payment else None, "receipt_url": final_payment.receipt_file.url if (final_payment and final_payment.receipt_file) else None, } } def get_timeline(self, obj): """ Construye el stepper lateral consultando HistoricalRecords de simple-history. Detecta la fecha y hora exacta en que la orden entró a cada estado. """ # 1. Mapeo de fechas reales a partir del historial del modelo status_timestamps = {} history_records = obj.historical.all().order_by('history_date') for h in history_records: if h.status not in status_timestamps: status_timestamps[h.status] = h.history_date.strftime("%d/%m/%Y - %I:%M %p") # 2. Flujo ordenado según la interfaz visual flow_order = [ ('pending_initial_payment', 'Pendiente de pago'), ('initial_payment_review', 'Pago inicial en revisión'), ('manufacturing', 'En fabricación'), ('waiting_final_payment', 'Esperando pago final'), ('final_payment_review', 'Pago final en revisión'), ('shipped', 'Enviado'), ('finalized', 'Finalizado'), ] # Encontrar en qué punto del flujo estamos current_status_keys = [k for k, _ in flow_order] current_index = current_status_keys.index(obj.status) if obj.status in current_status_keys else -1 timeline_data = [] for idx, (status_key, label) in enumerate(flow_order): if idx < current_index: state = "completed" date_str = status_timestamps.get(status_key, "Completado") elif idx == current_index: state = "current" date_str = status_timestamps.get(status_key, "En curso") else: state = "pending" date_str = "Pendiente" timeline_data.append({ "status_key": status_key, "label": label, "state": state, # completed | current | pending "date_display": date_str }) return timeline_data