326 lines
13 KiB
Python
326 lines
13 KiB
Python
from django.db import models
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from django.db.models import Q
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from django.db.transaction import atomic
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from rest_framework import serializers, status
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from apps.herd.models import Rancher
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from apps.herd.pos.api.v1.serializers import RancherSerializer
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from apps.herd.services.services import get_rancher_statistics, rancher_quota_weight
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from apps.pos_device.models import POSFreeProducts
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from apps.pos_device.pos.api.v1.serializers.device import DeviceSerializer
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from apps.pos_device.services.services import pos_organizations_sharing_information
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from apps.product.exceptions import QuotaSaleTimeException
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from apps.product.models import (
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QuotaDistribution,
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Product, OrganizationQuotaStats
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)
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from apps.product.services.services import (
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quota_live_stock_allocation_info,
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quota_incentive_plans_info,
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quota_attribute_value
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)
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from apps.warehouse import models as warehouse_models
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from apps.warehouse.exceptions import WareHouseException
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from apps.warehouse.services.quota_usage_services import QuotaUsageService
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from apps.warehouse.services.services import create_extra_sale, create_pre_sale
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class InventoryEntrySerializer(serializers.ModelSerializer):
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class Meta:
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model = warehouse_models.InventoryEntry
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fields = [
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"id",
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"entry_identity",
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"create_date",
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"modify_date",
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"organization",
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"distribution",
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"weight",
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"balance",
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"lading_number",
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"delivery_address",
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"is_confirmed",
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"notes",
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]
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def to_representation(self, instance):
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""" custom output of inventory entry serializer """
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representation = super().to_representation(instance)
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if instance.document:
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representation['document'] = instance.document
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if instance.distribution:
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# distribution data
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representation['distribution'] = {
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'distribution_identity': instance.distribution.distribution_id,
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'sale_unit': instance.distribution.quota.sale_unit.unit,
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'id': instance.distribution.id
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}
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representation['quota'] = {
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'quota_identity': instance.distribution.quota.quota_id,
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'quota_weight': instance.distribution.quota.quota_weight,
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'quota_livestock_allocations': quota_live_stock_allocation_info(
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instance.distribution.quota
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),
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'quota_incentive_plans': quota_incentive_plans_info(instance.distribution.quota)
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}
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representation['product'] = {
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'image': instance.distribution.quota.product.img,
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'name': instance.distribution.quota.product.name,
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'id': instance.distribution.quota.product.id,
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}
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representation['pricing'] = {
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'pricing_attributes': quota_attribute_value(instance.distribution.quota),
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'sharing': pos_organizations_sharing_information(
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self.context['device'],
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instance.distribution.quota,
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instance.distribution
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),
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'base_prices': [
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{
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"text": "درب کارخانه", # noqa
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"name": "base_price_factory",
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"value": instance.distribution.quota.base_price_factory
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},
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{
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"text": "درب اتحادیه", # noqa
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"name": "base_price_cooperative",
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"value": instance.distribution.quota.base_price_cooperative
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}
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]
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}
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if 'rancher' in self.context.keys():
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# rancher herd & live stock statistics
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representation['rancher_statistics'] = get_rancher_statistics(self.context['rancher'])
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# rancher live stock statistics by inventory entry
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representation['rancher_quota_weight_statistics'] = rancher_quota_weight(
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self.context['rancher'], instance
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)
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return representation
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class InventoryQuotaSaleTransactionSerializer(serializers.ModelSerializer):
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rancher_national_code = serializers.CharField(max_length=50, required=False)
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class Meta: # noqa
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model = warehouse_models.InventoryQuotaSaleTransaction
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fields = '__all__'
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depth = 0
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def create(self, validated_data):
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items_data = self.context['request'].data['items']
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rancher_code = validated_data.pop(
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'rancher_national_code'
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) if 'rancher_national_code' in self.context['request'].data.keys() else None
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with atomic():
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# get rancher with national code
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rancher = None # noqa
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if rancher_code:
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rancher = Rancher.objects.get(national_code=rancher_code)
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validated_data['rancher'] = rancher
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# if transaction exists, update transaction status
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transaction = self.Meta.model.objects.filter(
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transaction_id=validated_data.get('transaction_id')
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)
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if transaction.exists():
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transaction = transaction.first()
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# --- Case 1: success => only update items
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if transaction.transaction_status == 'success':
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for item_data in items_data:
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qs = warehouse_models.InventoryQuotaSaleItem.objects.filter(
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Q(transaction=transaction) & (
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Q(free_product_id=item_data.get('free_product', None)) |
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Q(gov_product_id=item_data.get('gov_product', None))
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)
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).update(**item_data)
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return transaction
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# --- Case 2: not success => update transaction fields + items
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for field in [
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'transaction_status',
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'transaction_status_code',
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'result_text',
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'ref_num',
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'terminal',
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'payer_cart',
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'pos_date',
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'transaction_date',
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]:
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if field in validated_data:
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setattr(transaction, field, validated_data[field])
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transaction.save(update_fields=[
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'transaction_status',
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'transaction_status_code',
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'result_text',
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'ref_num',
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'terminal',
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'payer_cart',
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'pos_date',
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'transaction_date',
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])
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# items can change
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for item_data in items_data:
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items = warehouse_models.InventoryQuotaSaleItem.objects.filter(
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Q(transaction=transaction) & (
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Q(free_product_id=item_data.get('free_product', None)) |
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Q(gov_product_id=item_data.get('gov_product', None))
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)
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)
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items.update(**item_data)
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# if transaction status updated as success, call signal for inventory management
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if validated_data['transaction_status'] == 'success':
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for sale_item in items:
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sale_item.inventory_calculation = True
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sale_item.save()
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return transaction
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# --- Case 3: create new transaction
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transaction = warehouse_models.InventoryQuotaSaleTransaction.objects.create(
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seller_organization=self.context['organization'],
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pos_device=self.context['pos_device'],
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**validated_data
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)
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# calculate total price of product items in shopping cart
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total_price = 0
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for item_data in items_data:
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# get product by type
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gov_product = item_data.pop('gov_product', None)
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free_product = item_data.pop('free_product', None)
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distribution_id = item_data.pop('quota_distribution')
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distribution = QuotaDistribution.objects.filter(
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id=distribution_id
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).first() if 'quota_distribution' in item_data.keys() else None
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quota_stat_id = item_data.pop('quota_stat')
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quota_stat = OrganizationQuotaStats.objects.get(id=quota_stat_id)
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# create item for transaction
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item = warehouse_models.InventoryQuotaSaleItem.objects.create(
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transaction=transaction,
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quota_distribution=distribution,
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quota_stat=quota_stat,
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gov_product=Product.objects.get(
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id=gov_product
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) if Product.objects.filter(id=gov_product).exists() else None,
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free_product=POSFreeProducts.objects.get(
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id=free_product
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) if POSFreeProducts.objects.filter(id=free_product).exists() else None,
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**item_data
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)
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total_price += item.total_price
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# IF WE DO NOT HAVE DISTRIBUTION, THEN IT IS A FREE PRODUCT TRANSACTION
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if distribution_id and quota_stat_id in item_data.keys():
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# create extra sale for distribution
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create_extra_sale(transaction=transaction, sale_item=item)
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# create pre sale for distribution
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create_pre_sale(transaction=transaction, sale_item=item)
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# calculate quota usage of rancher
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QuotaUsageService.allocate_usage(
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rancher=rancher,
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distribution=distribution,
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quota_stat=quota_stat,
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item_data=item_data
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)
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transaction.transaction_price = total_price
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transaction.save()
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return transaction
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def validate(self, attrs):
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"""
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validate total inventory sale should be fewer than
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distribution weight
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"""
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items = self.context['request'].data['items']
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for item in items:
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if 'quota_stat' in item.keys():
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# get quota stat object
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quota_stat = OrganizationQuotaStats.objects.get(
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id=item.get('quota_stat')
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)
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if not quota_stat.quota.pre_sale and not quota_stat.quota.free_sale:
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# if quota has not been in sale time
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if not quota_stat.quota.is_in_sale_licence_time():
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raise QuotaSaleTimeException()
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total_sale_weight = quota_stat.sale_items.aggregate(
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total=models.Sum('weight')
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)['total'] or 0
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if total_sale_weight + item.get('weight') > quota_stat.remaining_amount:
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raise WareHouseException(
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"وزن وارد شده بیشتر از باقیمانده سهمیه میباشد", # noqa
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status_code=status.HTTP_403_FORBIDDEN
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)
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return attrs
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def to_representation(self, instance):
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""" customize output of transactions serializer """
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representation = super().to_representation(instance)
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if instance.rancher:
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representation['rancher'] = RancherSerializer(instance.rancher).data
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representation['pos_device'] = DeviceSerializer(instance.pos_device).data
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if instance.seller_organization:
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representation['seller_organization'] = instance.seller_organization.name
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# get product items of transaction
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representation['items'] = InventoryQuotaSaleItemSerializer(instance.items.all(), many=True).data
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return representation
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class InventoryQuotaSaleItemSerializer(serializers.ModelSerializer):
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product_name = serializers.CharField(source='product.name', read_only=True)
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class Meta:
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model = warehouse_models.InventoryQuotaSaleItem
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fields = [
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'id',
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"transaction",
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"quota_stat",
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"gov_product",
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"free_product",
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"product_name",
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"image",
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"name",
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"price_type",
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"delivery_type",
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"item_type",
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"paid_type",
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"weight",
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"unit_price",
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"total_price",
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"paid_price",
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"livestock_statistic",
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"item_share",
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]
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class QuotaPreSaleItemSerializer(serializers.ModelSerializer):
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class Meta:
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model = warehouse_models.QuotaPreSaleItem
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fields = '__all__'
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