467 lines
19 KiB
Python
467 lines
19 KiB
Python
from app.models import *
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from rest_framework.decorators import api_view
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from rest_framework.response import Response
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from django.db import transaction
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from datetime import datetime
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from decimal import Decimal
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from django.db.models import F
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import threading
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# ==========================================================================================
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def getcode(code, Model):
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try:
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obj = Model.objects.latest('id')
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val = 1 if obj is None else obj.id + 1
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except Exception:
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val = 1
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length = len(str(val))
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text = '0' * (6 - length)
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return f"{code}{text}{val}"
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# ==========================================================================================
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def account_entry_api(code, amount, content, type, category, userid, ref=None, product=None, customer=None, date=None):
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try:
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user = User.objects.get(id=userid)
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entry_type = Entry_Type.objects.get(code=type)
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entry_category = Entry_Category.objects.get(id=category)
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system_date = date if date else datetime.now().strftime("%Y-%m-%d")
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amount = float(amount)
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with transaction.atomic():
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account = Internal_Account.objects.select_for_update().get(code=code)
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start_balance = account.balance or 0
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if entry_type.code == 'DR' and start_balance < amount:
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return {'error': 'Số dư không đủ để thực hiện giao dịch.'}, None
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if entry_type.code == 'CR':
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account.balance += amount
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else:
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account.balance -= amount
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account.save()
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account.refresh_from_db()
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new_balance = account.balance
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entry = Internal_Entry.objects.create(
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category=entry_category,
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content=content,
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amount=amount,
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inputer=user,
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approver=user,
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type=entry_type,
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balance_before=start_balance,
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balance_after=new_balance,
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account=account,
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date=system_date,
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ref=ref,
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product=None if product is None else Product.objects.get(id=product),
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customer=None if customer is None else Customer.objects.get(id=customer)
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)
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text = 'id,account__currency__code,ref,balance_before,balance_after,code,account,account__code,account__branch__name,account__type__name,date,amount,content,inputer,inputer__fullname,approver,approver__fullname,create_time,update_time,type,type__code,type__name'
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fields = text.split(',')
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response_data = Internal_Entry.objects.filter(id=entry.id).values(*fields).first()
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return response_data, entry
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except User.DoesNotExist:
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return {'error': f"Người dùng với ID {userid} không tồn tại."}, None
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except Internal_Account.DoesNotExist:
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return {'error': f"Tài khoản nội bộ với mã '{code}' không tồn tại."}, None
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except Entry_Type.DoesNotExist:
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return {'error': f"Loại bút toán với mã '{type}' không tồn tại."}, None
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except Entry_Category.DoesNotExist:
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return {'error': f"Danh mục bút toán với ID '{category}' không tồn tại."}, None
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except Exception as e:
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return {'error': f"Đã xảy ra lỗi không mong muốn: {str(e)}"}, None
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# ==========================================================================================
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# HÀM LẤY RULE TỪ BIZ_SETTING (detail là string)
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# ==========================================================================================
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def get_allocation_rule():
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try:
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rule_setting = Biz_Setting.objects.get(code='rule')
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rule_value = (rule_setting.detail or 'principal-fee').strip()
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if rule_value.lower() in ['fee-principal', 'phạt trước', 'phat truoc']:
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return 'fee-principal'
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else:
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return 'principal-fee'
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except Biz_Setting.DoesNotExist:
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return 'principal-fee'
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# ==========================================================================================
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# HÀM PHÂN BỔ THÔNG THƯỜNG
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# ==========================================================================================
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def allocate_payment_to_schedules(entries):
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if not entries:
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return {"status": "no_entries", "message": "Không có bút toán"}
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allocation_rule = get_allocation_rule()
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updated_schedules = []
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errors = []
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# Lấy status "đã thanh toán" một lần
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paid_payment_status = None
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paid_txn_status = None
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try:
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paid_payment_status = Payment_Status.objects.get(id=2)
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except Payment_Status.DoesNotExist:
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errors.append("Không tìm thấy Payment_Status id=2 (đã thanh toán)")
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try:
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paid_txn_status = Transaction_Status.objects.get(id=2)
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except Transaction_Status.DoesNotExist:
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errors.append("Không tìm thấy Transaction_Status id=2 (đã thanh toán)")
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for entry in entries:
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if entry.type.code != 'CR' or entry.account.id == 5:
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continue
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amount = Decimal(str(entry.amount))
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if amount <= 0:
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continue
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with transaction.atomic():
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try:
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booked = Product_Booked.objects.filter(product=entry.product).first()
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if not booked or not booked.transaction:
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errors.append(f"Entry {entry.code}: Không tìm thấy Transaction")
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continue
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txn = booked.transaction
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txn_detail = None
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try:
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current = Transaction_Current.objects.get(transaction=txn)
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txn_detail = current.detail
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except (Transaction_Current.DoesNotExist, AttributeError):
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txn_detail = Transaction_Detail.objects.filter(
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transaction=txn
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).order_by('-create_time').first()
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if not txn_detail:
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errors.append(f"Entry {entry.code}: Không tìm thấy Transaction_Detail")
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continue
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schedules = Payment_Schedule.objects.filter(
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txn_detail=txn_detail,
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status__id=1 # giả sử status=1 là chưa thanh toán
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).order_by('cycle', 'from_date')
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if not schedules.exists():
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continue
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remaining = amount
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total_allocated = Decimal('0')
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for sch in schedules:
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if remaining <= 0:
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break
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penalty_remain = Decimal(str(sch.penalty_remain or 0))
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amount_remain = Decimal(str(sch.amount_remain or 0))
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paid_amount = Decimal(str(sch.paid_amount or 0))
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penalty_paid = Decimal(str(sch.penalty_paid or 0))
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remain_amount = Decimal(str(sch.remain_amount or 0))
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to_penalty = Decimal('0')
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to_principal = Decimal('0')
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if allocation_rule == 'fee-principal':
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to_penalty = min(remaining, penalty_remain)
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remaining -= to_penalty
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penalty_paid += to_penalty
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penalty_remain -= to_penalty
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to_principal = min(remaining, amount_remain)
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remaining -= to_principal
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paid_amount += to_principal
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amount_remain -= to_principal
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else:
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to_principal = min(remaining, amount_remain)
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remaining -= to_principal
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paid_amount += to_principal
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amount_remain -= to_principal
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to_penalty = min(remaining, penalty_remain)
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remaining -= to_penalty
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penalty_paid += to_penalty
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penalty_remain -= to_penalty
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allocated_here = to_penalty + to_principal
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total_allocated += allocated_here
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sch.paid_amount = paid_amount
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sch.penalty_paid = penalty_paid
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sch.amount_remain = amount_remain
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sch.penalty_remain = penalty_remain
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sch.remain_amount = max(Decimal('0'), remain_amount - allocated_here)
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entry_list = sch.entry or []
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date_value = entry.date
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if hasattr(date_value, 'isoformat'):
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date_value = date_value.isoformat()
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else:
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date_value = str(date_value)
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entry_list.append({
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"code": entry.code,
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"amount": float(allocated_here),
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"date": date_value,
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"type": "CR",
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"principal": float(to_principal),
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"penalty": float(to_penalty),
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"rule": allocation_rule
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})
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sch.entry = entry_list
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if sch.amount_remain <= 0 and sch.penalty_remain <= 0 and paid_payment_status:
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sch.status = paid_payment_status
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sch.save(update_fields=[
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'paid_amount', 'penalty_paid', 'amount_remain',
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'penalty_remain', 'remain_amount', 'entry', 'status'
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])
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updated_schedules.append(sch.id)
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# Cập nhật Transaction_Detail
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txn_detail.amount_received = F('amount_received') + total_allocated
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txn_detail.amount_remaining = F('amount_remaining') - total_allocated
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txn_detail.save()
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txn_detail.refresh_from_db()
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if txn_detail.amount_remaining <= 0 and paid_txn_status:
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txn_detail.status = paid_txn_status
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txn_detail.save(update_fields=['status'])
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# Cập nhật Transaction
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txn.amount_received = F('amount_received') + total_allocated
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txn.amount_remain = F('amount_remain') - total_allocated
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txn.save()
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txn.refresh_from_db()
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if txn.amount_remain <= 0 and paid_txn_status:
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txn.status = paid_txn_status
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txn.save(update_fields=['status'])
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except Exception as exc:
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errors.append(f"Entry {entry.code}: Lỗi phân bổ - {str(exc)}")
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return {
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"status": "success" if not errors else "partial_failure",
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"updated_schedules": updated_schedules,
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"errors": errors,
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"rule_used": allocation_rule
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}
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# ==========================================================================================
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# HÀM MIỄN LÃI
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# ==========================================================================================
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def allocate_penalty_reduction(entries):
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if not entries:
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return {"status": "no_entries", "message": "Không có bút toán"}
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updated_schedules = []
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errors = []
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for entry in entries:
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if entry.type.code != 'CR' or entry.account.id != 5:
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continue # Chỉ xử lý bút toán từ tài khoản miễn lãi
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amount = Decimal(str(entry.amount))
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if amount <= 0:
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continue
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with transaction.atomic():
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try:
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booked = Product_Booked.objects.filter(product=entry.product).first()
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if not booked or not booked.transaction:
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errors.append(f"Entry {entry.code}: Không tìm thấy Transaction")
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continue
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txn = booked.transaction
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txn_detail = None
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try:
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current = Transaction_Current.objects.get(transaction=txn)
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txn_detail = current.detail
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except (Transaction_Current.DoesNotExist, AttributeError):
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txn_detail = Transaction_Detail.objects.filter(
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transaction=txn
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).order_by('-create_time').first()
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if not txn_detail:
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errors.append(f"Entry {entry.code}: Không tìm thấy Transaction_Detail")
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continue
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# Lấy các lịch chưa thanh toán (status=1)
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schedules = Payment_Schedule.objects.filter(
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txn_detail=txn_detail,
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status=1
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).order_by('cycle', 'from_date')
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if not schedules.exists():
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continue
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remaining_reduce = amount # số tiền miễn lãi còn lại để phân bổ
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for schedule in schedules:
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if remaining_reduce <= 0:
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break
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current_penalty_remain = Decimal(str(schedule.penalty_remain or 0))
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current_penalty_reduce = Decimal(str(schedule.penalty_reduce or 0))
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current_remain_amount = Decimal(str(schedule.remain_amount or 0))
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# Chỉ miễn tối đa bằng số phạt còn lại
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to_reduce = min(remaining_reduce, current_penalty_remain)
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remaining_reduce -= to_reduce
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# Cập nhật các trường
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schedule.penalty_reduce = current_penalty_reduce + to_reduce
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schedule.penalty_remain = current_penalty_remain - to_reduce
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# GIẢM TỔNG CÒN LẠI (remain_amount)
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schedule.remain_amount = max(Decimal('0'), current_remain_amount - to_reduce)
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# KHÔNG ĐỘNG ĐẾN amount_remain (nợ gốc còn lại)
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# Ghi trace bút toán miễn lãi
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entry_list = schedule.entry or []
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date_value = entry.date
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if hasattr(date_value, 'isoformat'):
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date_value = date_value.isoformat()
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else:
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date_value = str(date_value)
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entry_list.append({
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"code": entry.code,
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"amount": float(to_reduce),
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"date": date_value,
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"type": "REDUCTION",
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"note": "Miễn lãi phạt quá hạn"
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})
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schedule.entry = entry_list
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# Lưu lại
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schedule.save(update_fields=[
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'penalty_reduce', 'penalty_remain', 'remain_amount', 'entry'
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])
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updated_schedules.append(schedule.id)
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except Exception as exc:
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errors.append(f"Entry {entry.code}: Lỗi miễn lãi - {str(exc)}")
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return {
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"status": "success" if not errors else "partial_failure",
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"updated_schedules": updated_schedules,
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"errors": errors,
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"message": f"Đã miễn lãi cho {len(updated_schedules)} lịch thanh toán (chỉ giảm phạt + tổng còn lại)"
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}
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# ==========================================================================================
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# BACKGROUND FUNCTION
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# ==========================================================================================
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def background_allocate(entries_created):
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try:
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# Debug type date
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for e in entries_created:
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print(f"Debug entry {e.code}: date type = {type(e.date)}, value = {e.date}")
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normal_result = allocate_payment_to_schedules(entries_created)
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reduction_result = allocate_penalty_reduction(entries_created)
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print(f"[{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}] Background allocation completed:")
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print("Normal:", normal_result)
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print("Reduction:", reduction_result)
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except Exception as e:
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print(f"[{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}] Background allocation error: {str(e)}")
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# ==========================================================================================
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# API TẠO MỘT BÚT TOÁN
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# ==========================================================================================
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@api_view(['POST'])
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def account_entry(request):
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print(request.data.get('date'))
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ref = request.data.get('ref')
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response_data, created_entry = account_entry_api(
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code=request.data['code'],
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amount=request.data['amount'],
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content=request.data['content'],
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type=request.data['type'],
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category=request.data['category'],
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userid=request.data['user'],
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ref=ref,
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product=request.data['product'],
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customer=request.data['customer'],
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date=request.data.get('date')
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)
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if 'error' in response_data:
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return Response(response_data, status=400)
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if created_entry:
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thread = threading.Thread(
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target=background_allocate,
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args=([created_entry],),
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daemon=True
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)
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thread.start()
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return Response({
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**response_data,
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"message": "Bút toán đã tạo thành công. Phân bổ thanh toán đang chạy ngầm..."
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})
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# ==========================================================================================
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# API TẠO NHIỀU BÚT TOÁN
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# ==========================================================================================
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@api_view(['POST'])
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def account_multi_entry(request):
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try:
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result = []
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entries_created = []
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data_list = request.data.get('data', [])
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with transaction.atomic():
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for obj in data_list:
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response_data, created_entry = account_entry_api(
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code=obj['Tài khoản'],
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amount=obj['amount'],
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content=obj['content'],
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type='CR',
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category=obj['category'],
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userid=request.data.get('user'),
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ref=obj['ref'],
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product=obj['product'],
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customer=obj['customer'],
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date=obj['date']
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)
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result.append(response_data)
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if created_entry:
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entries_created.append(created_entry)
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if entries_created:
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thread = threading.Thread(
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target=background_allocate,
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args=(entries_created,),
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daemon=True
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)
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thread.start()
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return Response({
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"entries": result,
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"message": "Bút toán đã tạo thành công. Phân bổ thanh toán đang chạy ngầm..."
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})
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except Exception as e:
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print({'error': f"Đã xảy ra lỗi không mong muốn: {str(e)}"})
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return Response({'error': str(e)}, status=400) |