70 lines
3.3 KiB
Python
70 lines
3.3 KiB
Python
from django.db.models import Sum
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from django.db.models.signals import post_save, post_delete
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from django.dispatch import receiver
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from apps.product.models import QuotaDistribution
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from .models import InventoryEntry, InventoryQuotaSaleItem
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def calculate_warehouse_entry(quota_distribution):
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total_entry = quota_distribution.inventory_entry.aggregate(
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total=Sum('weight')
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)['total'] or 0
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quota_distribution.warehouse_entry = total_entry
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quota_distribution.save(update_fields=['warehouse_entry'])
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def warehouse_sold_and_balance(quota_distribution: QuotaDistribution):
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total_sold = quota_distribution.sale_items.aggregate(
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total=Sum('weight')
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)['total'] or 0
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quota_distribution.been_sold = total_sold
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quota_distribution.warehouse_balance = quota_distribution.warehouse_entry - total_sold
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if quota_distribution.warehouse_balance >= 0:
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# calculate extra sales & mines total extra sales weight from new inventory entry
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# and set the warehouse balance
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extra_sales = quota_distribution.extra_sales.all()
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total_extra_sales_weight = extra_sales.aggregate(total=Sum('weight'))['total'] or 0
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if quota_distribution.free_sale_balance != 0:
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if quota_distribution.warehouse_balance >= quota_distribution.free_sale_balance:
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quota_distribution.warehouse_balance -= total_extra_sales_weight
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quota_distribution.free_sale_balance = 0
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else:
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quota_distribution.free_sale_balance -= quota_distribution.warehouse_balance
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quota_distribution.warehouse_balance = 0
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# calculate pre_sales & mines total pre_sales weight from new inventory entry
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# and set the warehouse balance
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pre_sales = quota_distribution.pre_sales.all()
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total_pre_sales_weight = pre_sales.aggregate(total=Sum('weight'))['total'] or 0
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if total_pre_sales_weight != 0:
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if quota_distribution.warehouse_balance >= quota_distribution.pre_sale_balance:
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quota_distribution.warehouse_balance -= total_pre_sales_weight
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quota_distribution.pre_sale_balance = 0
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else:
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quota_distribution.pre_sale_balance -= quota_distribution.warehouse_balance
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quota_distribution.warehouse_balance = 0
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quota_distribution.save(update_fields=['been_sold', 'warehouse_balance', 'free_sale_balance', 'pre_sale_balance'])
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@receiver(post_save, sender=InventoryEntry)
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@receiver(post_delete, sender=InventoryEntry)
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def update_distribution_warehouse_entry(sender, instance, **kwargs):
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calculate_warehouse_entry(instance.distribution)
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warehouse_sold_and_balance(instance.distribution)
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@receiver(post_save, sender=InventoryQuotaSaleItem)
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@receiver(post_delete, sender=InventoryQuotaSaleItem)
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def update_distribution_warehouse_sold_and_balance(sender, instance: InventoryQuotaSaleItem, **kwargs):
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if instance.quota_distribution and not instance.quota_distribution.pre_sale:
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# if transaction status is success and warehouse management Done once, inventory_calculation set to true
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if instance.transaction.transaction_status == 'success' and instance.inventory_calculation is False:
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warehouse_sold_and_balance(
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quota_distribution=instance.quota_distribution,
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)
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else:
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print("quota distribution is null - warehouse app signals")
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