fix: implement sequential order_no generation and enforce UTC+8 Beijing time for adjustments

inventory-backend/app/api/v1/stock/adjustment.py

@@ -2,25 +2,46 @@
 from flask import Blueprint, request, jsonify
 from flask_jwt_extended import jwt_required, get_jwt_identity, get_jwt
 from app.utils.decorators import permission_required
-from app.extensions import db, beijing_time
+from app.extensions import db
 from app.models.stock.adjustment import StockAdjustment
 from app.models.base import MaterialBase
 from app.models.inbound.buy import StockBuy
 from app.models.inbound.semi import StockSemi
 from app.models.inbound.product import StockProduct
 from app.models.inbound.stocktake import StocktakeDraft
-from datetime import datetime
-import random
-import string
+from datetime import datetime, timedelta
+from sqlalchemy import func
 
 adjustment_bp = Blueprint('adjustment', __name__, url_prefix='/stock/adjustment')
 
 
+def get_beijing_time():
+    """获取北京时间 (UTC+8)"""
+    return datetime.utcnow() + timedelta(hours=8)
+
+
 def generate_order_no():
-    """生成单号 ADJ-YYYYMMDD-XXXX"""
-    today = datetime.now().strftime('%Y%m%d')
-    suffix = ''.join(random.choices(string.digits, k=4))
-    return f'ADJ-{today}-{suffix}'
+    """生成单号 ADJ-YYYYMMDD-XXXX，按天严格自增"""
+    bj_time = get_beijing_time()
+    date_str = bj_time.strftime('%Y%m%d')
+    prefix = f"ADJ-{date_str}-"
+
+    # 查询今天已有的最大单号
+    last_order = StockAdjustment.query.filter(
+        StockAdjustment.order_no.like(f"{prefix}%")
+    ).order_by(StockAdjustment.order_no.desc()).first()
+
+    if last_order:
+        # 解析最后的 4 位流水号并 +1
+        try:
+            last_seq = int(last_order.order_no.split('-')[-1])
+            new_seq = last_seq + 1
+        except (ValueError, IndexError):
+            new_seq = 1
+    else:
+        new_seq = 1
+
+    return f"{prefix}{new_seq:04d}"  # 补齐 4 位，如 0001
 
 
 def get_stock_model(source_table):
@@ -134,7 +155,8 @@ def create():
         return jsonify({'code': 400, 'msg': '无效的调整类型'}), 400
 
     try:
-        # 创建调整单
+        # 创建调整单（强制使用北京时间）
+        bj_time = get_beijing_time()
         adjustment = StockAdjustment(
             order_no=generate_order_no(),
             base_id=base_id,
@@ -148,7 +170,9 @@ def create():
             adjust_quantity=adjust_quantity,
             reason=reason,
             status='completed',
-            operator=operator
+            operator=operator,
+            create_time=bj_time,
+            update_time=bj_time
         )
         db.session.add(adjustment)
 
@@ -351,7 +375,8 @@ def import_from_stocktake():
             # 生成调整单号
             order_no = generate_order_no()
 
-            # 创建调整单（使用北京时间）
+            # 创建调整单（强制使用北京时间）
+            bj_time = get_beijing_time()
             adjustment = StockAdjustment(
                 order_no=order_no,
                 base_id=base_id,
@@ -364,7 +389,8 @@ def import_from_stocktake():
                 reason=reason,
                 status='pending',
                 operator=operator,
-                create_time=beijing_time()
+                create_time=bj_time,
+                update_time=bj_time
             )
             db.session.add(adjustment)
             count += 1
@@ -418,6 +444,7 @@ def process_adjustment(id):
 
         adjustment.status = 'completed'
         adjustment.operator = operator
+        adjustment.update_time = get_beijing_time()
 
         db.session.commit()
         return jsonify({'code': 200, 'msg': '处理成功', 'data': adjustment.to_dict()})