380 lines
15 KiB
Python
380 lines
15 KiB
Python
"""
|
||
单位转换模块
|
||
----------
|
||
提供单位转换功能，支持规格推断和单位自动提取。
|
||
"""
|
||
|
||
import re
|
||
import logging
|
||
from typing import Dict, Tuple, Optional, Any, List, Union
|
||
|
||
from ..utils.log_utils import get_logger
|
||
|
||
logger = get_logger(__name__)
|
||
|
||
class UnitConverter:
|
||
"""
|
||
单位转换器：处理不同单位之间的转换，支持从商品名称推断规格
|
||
"""
|
||
|
||
def __init__(self):
|
||
"""
|
||
初始化单位转换器
|
||
"""
|
||
# 特殊条码配置
|
||
self.special_barcodes = {
|
||
'6925019900087': {
|
||
'multiplier': 10, # 数量乘以10
|
||
'target_unit': '瓶', # 目标单位
|
||
'description': '特殊处理：数量*10，单位转换为瓶'
|
||
},
|
||
'6921168593804': {
|
||
'multiplier': 30, # 数量乘以30
|
||
'target_unit': '瓶', # 目标单位
|
||
'description': 'NFC产品特殊处理：每箱30瓶'
|
||
}
|
||
# 可以添加更多特殊条码的配置
|
||
}
|
||
|
||
# 规格推断的正则表达式模式
|
||
self.spec_patterns = [
|
||
# 1*6、1x12、1X20等格式
|
||
(r'(\d+)[*xX×](\d+)', r'\1*\2'),
|
||
# 1*5*12和1x5x12等三级格式
|
||
(r'(\d+)[*xX×](\d+)[*xX×](\d+)', r'\1*\2*\3'),
|
||
# "xx入"格式，如"12入"、"24入"
|
||
(r'(\d+)入', r'1*\1'),
|
||
# "xxL*1"或"xx升*1"格式
|
||
(r'([\d\.]+)[L升][*xX×]?(\d+)?', r'\1L*\2' if r'\2' else r'\1L*1'),
|
||
# "xxkg*1"或"xx公斤*1"格式
|
||
(r'([\d\.]+)(?:kg|公斤)[*xX×]?(\d+)?', r'\1kg*\2' if r'\2' else r'\1kg*1'),
|
||
# "xxg*1"或"xx克*1"格式
|
||
(r'([\d\.]+)(?:g|克)[*xX×]?(\d+)?', r'\1g*\2' if r'\2' else r'\1g*1'),
|
||
# "xxmL*1"或"xx毫升*1"格式
|
||
(r'([\d\.]+)(?:mL|毫升)[*xX×]?(\d+)?', r'\1mL*\2' if r'\2' else r'\1mL*1'),
|
||
]
|
||
|
||
def extract_unit_from_quantity(self, quantity_str: str) -> Tuple[Optional[float], Optional[str]]:
|
||
"""
|
||
从数量字符串中提取单位
|
||
|
||
支持的格式:
|
||
1. "2箱" -> (2, "箱")
|
||
2. "3件" -> (3, "件")
|
||
3. "1.5提" -> (1.5, "提")
|
||
4. "数量: 5盒" -> (5, "盒")
|
||
5. "× 2瓶" -> (2, "瓶")
|
||
|
||
Args:
|
||
quantity_str: 数量字符串，如"2箱"、"5件"
|
||
|
||
Returns:
|
||
(数量, 单位)的元组，如果无法提取则返回(None, None)
|
||
"""
|
||
if not quantity_str or not isinstance(quantity_str, str):
|
||
return None, None
|
||
|
||
# 清理字符串，移除前后空白和一些常见前缀
|
||
cleaned_str = quantity_str.strip()
|
||
for prefix in ['数量:', '数量：', '×', 'x', 'X', '*']:
|
||
cleaned_str = cleaned_str.replace(prefix, '').strip()
|
||
|
||
# 匹配数字+单位格式 (基本格式)
|
||
basic_match = re.match(r'^([\d\.]+)\s*([^\d\s\.]+)$', cleaned_str)
|
||
if basic_match:
|
||
try:
|
||
num = float(basic_match.group(1))
|
||
unit = basic_match.group(2)
|
||
logger.info(f"从数量提取单位(基本格式): {quantity_str} -> 数量={num}, 单位={unit}")
|
||
return num, unit
|
||
except ValueError:
|
||
pass
|
||
|
||
# 匹配更复杂的格式，如包含其他文本的情况
|
||
complex_match = re.search(r'([\d\.]+)\s*([箱|件|瓶|提|盒|袋|桶|包|kg|g|升|毫升|L|ml|个])', cleaned_str)
|
||
if complex_match:
|
||
try:
|
||
num = float(complex_match.group(1))
|
||
unit = complex_match.group(2)
|
||
logger.info(f"从数量提取单位(复杂格式): {quantity_str} -> 数量={num}, 单位={unit}")
|
||
return num, unit
|
||
except ValueError:
|
||
pass
|
||
|
||
return None, None
|
||
|
||
def extract_specification(self, text: str) -> Optional[str]:
|
||
"""
|
||
从文本中提取规格信息
|
||
|
||
Args:
|
||
text: 文本字符串
|
||
|
||
Returns:
|
||
提取的规格字符串，如果无法提取则返回None
|
||
"""
|
||
if not text or not isinstance(text, str):
|
||
return None
|
||
|
||
# 尝试所有模式
|
||
for pattern, replacement in self.spec_patterns:
|
||
match = re.search(pattern, text)
|
||
if match:
|
||
# 特殊处理三级格式，确保正确显示为1*5*12
|
||
if '*' in replacement and replacement.count('*') == 1 and len(match.groups()) >= 2:
|
||
result = f"{match.group(1)}*{match.group(2)}"
|
||
logger.info(f"提取规格: {text} -> {result}")
|
||
return result
|
||
# 特殊处理三级规格格式
|
||
elif '*' in replacement and replacement.count('*') == 2 and len(match.groups()) >= 3:
|
||
result = f"{match.group(1)}*{match.group(2)}*{match.group(3)}"
|
||
logger.info(f"提取三级规格: {text} -> {result}")
|
||
return result
|
||
# 一般情况
|
||
else:
|
||
result = re.sub(pattern, replacement, text)
|
||
logger.info(f"提取规格: {text} -> {result}")
|
||
return result
|
||
|
||
# 没有匹配任何模式
|
||
return None
|
||
|
||
def infer_specification_from_name(self, name: str) -> Optional[str]:
|
||
"""
|
||
从商品名称中推断规格
|
||
|
||
规则:
|
||
1. "xx入纸箱" -> 1*xx (如"15入纸箱" -> 1*15)
|
||
2. 直接包含规格 "1*15" -> 1*15
|
||
3. "xx纸箱" -> 1*xx (如"15纸箱" -> 1*15)
|
||
4. "xx白膜" -> 1*xx (如"12白膜" -> 1*12)
|
||
5. "xxL" 容量单位特殊处理
|
||
|
||
Args:
|
||
name: 商品名称
|
||
|
||
Returns:
|
||
推断的规格，如果无法推断则返回None
|
||
"""
|
||
if not name or not isinstance(name, str):
|
||
return None
|
||
|
||
# 记录原始商品名称，用于日志
|
||
original_name = name
|
||
|
||
# 特殊模式1: "xx入纸箱" 格式，如"445水溶C血橙15入纸箱" -> "1*15"
|
||
pattern1 = r'.*?(\d+)入纸箱'
|
||
match = re.search(pattern1, name)
|
||
if match:
|
||
inferred_spec = f"1*{match.group(1)}"
|
||
logger.info(f"从名称推断规格(入纸箱): {original_name} -> {inferred_spec}")
|
||
return inferred_spec
|
||
|
||
# 特殊模式2: 直接包含规格，如"500-东方树叶-乌龙茶1*15-纸箱装" -> "1*15"
|
||
pattern2 = r'.*?(\d+)[*xX×](\d+).*'
|
||
match = re.search(pattern2, name)
|
||
if match:
|
||
inferred_spec = f"{match.group(1)}*{match.group(2)}"
|
||
logger.info(f"从名称推断规格(直接格式): {original_name} -> {inferred_spec}")
|
||
return inferred_spec
|
||
|
||
# 特殊模式3: "xx纸箱" 格式，如"500茶π蜜桃乌龙15纸箱" -> "1*15"
|
||
pattern3 = r'.*?(\d+)纸箱'
|
||
match = re.search(pattern3, name)
|
||
if match:
|
||
inferred_spec = f"1*{match.group(1)}"
|
||
logger.info(f"从名称推断规格(纸箱): {original_name} -> {inferred_spec}")
|
||
return inferred_spec
|
||
|
||
# 特殊模式4: "xx白膜" 格式，如"1.5L水12白膜" 或 "550水24白膜" -> "1*12" 或 "1*24"
|
||
pattern4 = r'.*?(\d+)白膜'
|
||
match = re.search(pattern4, name)
|
||
if match:
|
||
inferred_spec = f"1*{match.group(1)}"
|
||
logger.info(f"从名称推断规格(白膜): {original_name} -> {inferred_spec}")
|
||
return inferred_spec
|
||
|
||
# 特殊模式5: 容量单位如"12.9L桶装水" -> "12.9L*1"
|
||
pattern5 = r'.*?([\d\.]+)L.*'
|
||
match = re.search(pattern5, name)
|
||
if match:
|
||
inferred_spec = f"{match.group(1)}L*1"
|
||
logger.info(f"从名称推断规格(容量): {original_name} -> {inferred_spec}")
|
||
return inferred_spec
|
||
|
||
# 尝试通用模式匹配
|
||
spec = self.extract_specification(name)
|
||
if spec:
|
||
logger.info(f"从名称推断规格(通用模式): {original_name} -> {spec}")
|
||
return spec
|
||
|
||
return None
|
||
|
||
def parse_specification(self, spec: str) -> Tuple[int, int, Optional[int]]:
|
||
"""
|
||
解析规格字符串，支持1*12和1*5*12等格式
|
||
|
||
Args:
|
||
spec: 规格字符串
|
||
|
||
Returns:
|
||
(一级包装, 二级包装, 三级包装)元组，如果是二级包装，第三个值为None
|
||
"""
|
||
if not spec or not isinstance(spec, str):
|
||
return 1, 1, None
|
||
|
||
# 处理三级包装，如1*5*12
|
||
three_level_match = re.match(r'(\d+)[*xX×](\d+)[*xX×](\d+)', spec)
|
||
if three_level_match:
|
||
try:
|
||
level1 = int(three_level_match.group(1))
|
||
level2 = int(three_level_match.group(2))
|
||
level3 = int(three_level_match.group(3))
|
||
logger.info(f"解析三级规格: {spec} -> {level1}*{level2}*{level3}")
|
||
return level1, level2, level3
|
||
except ValueError:
|
||
pass
|
||
|
||
# 处理二级包装，如1*12
|
||
two_level_match = re.match(r'(\d+)[*xX×](\d+)', spec)
|
||
if two_level_match:
|
||
try:
|
||
level1 = int(two_level_match.group(1))
|
||
level2 = int(two_level_match.group(2))
|
||
logger.info(f"解析二级规格: {spec} -> {level1}*{level2}")
|
||
return level1, level2, None
|
||
except ValueError:
|
||
pass
|
||
|
||
# 特殊处理L/升为单位的规格，如12.5L*1
|
||
volume_match = re.match(r'([\d\.]+)[L升][*xX×](\d+)', spec)
|
||
if volume_match:
|
||
try:
|
||
volume = float(volume_match.group(1))
|
||
quantity = int(volume_match.group(2))
|
||
logger.info(f"解析容量规格: {spec} -> {volume}L*{quantity}")
|
||
return 1, quantity, None
|
||
except ValueError:
|
||
pass
|
||
|
||
# 默认值
|
||
logger.warning(f"无法解析规格: {spec}，使用默认值1*1")
|
||
return 1, 1, None
|
||
|
||
def process_unit_conversion(self, product: Dict) -> Dict:
|
||
"""
|
||
处理单位转换，按照以下规则：
|
||
1. 特殊条码: 优先处理特殊条码
|
||
2. "件"单位: 数量×包装数量, 单价÷包装数量, 单位转为"瓶"
|
||
3. "箱"单位: 数量×包装数量, 单价÷包装数量, 单位转为"瓶"
|
||
4. "提"和"盒"单位: 如果是三级规格, 按件处理; 如果是二级规格, 保持不变
|
||
5. 其他单位: 保持不变
|
||
|
||
Args:
|
||
product: 商品信息字典
|
||
|
||
Returns:
|
||
处理后的商品信息字典
|
||
"""
|
||
# 复制原始数据，避免修改原始字典
|
||
result = product.copy()
|
||
|
||
barcode = result.get('barcode', '')
|
||
unit = result.get('unit', '')
|
||
quantity = result.get('quantity', 0)
|
||
price = result.get('price', 0)
|
||
specification = result.get('specification', '')
|
||
|
||
# 跳过无效数据
|
||
if not barcode or not quantity:
|
||
return result
|
||
|
||
# 特殊条码处理
|
||
if barcode in self.special_barcodes:
|
||
special_config = self.special_barcodes[barcode]
|
||
multiplier = special_config.get('multiplier', 1)
|
||
target_unit = special_config.get('target_unit', '瓶')
|
||
|
||
# 数量乘以倍数
|
||
new_quantity = quantity * multiplier
|
||
|
||
# 如果有单价，单价除以倍数
|
||
new_price = price / multiplier if price else 0
|
||
|
||
logger.info(f"特殊条码处理: {barcode}, 数量: {quantity} -> {new_quantity}, 单价: {price} -> {new_price}, 单位: {unit} -> {target_unit}")
|
||
|
||
result['quantity'] = new_quantity
|
||
result['price'] = new_price
|
||
result['unit'] = target_unit
|
||
return result
|
||
|
||
# 没有规格信息，无法进行单位转换
|
||
if not specification:
|
||
return result
|
||
|
||
# 解析规格信息
|
||
level1, level2, level3 = self.parse_specification(specification)
|
||
|
||
# "件"单位处理
|
||
if unit in ['件']:
|
||
# 计算包装数量（二级*三级，如果无三级则仅二级）
|
||
packaging_count = level2 * (level3 or 1)
|
||
|
||
# 数量×包装数量
|
||
new_quantity = quantity * packaging_count
|
||
|
||
# 单价÷包装数量
|
||
new_price = price / packaging_count if price else 0
|
||
|
||
logger.info(f"件单位处理: 数量: {quantity} -> {new_quantity}, 单价: {price} -> {new_price}, 单位: 件 -> 瓶")
|
||
|
||
result['quantity'] = new_quantity
|
||
result['price'] = new_price
|
||
result['unit'] = '瓶'
|
||
return result
|
||
|
||
# "箱"单位处理 - 与"件"单位处理相同
|
||
if unit in ['箱']:
|
||
# 计算包装数量
|
||
packaging_count = level2 * (level3 or 1)
|
||
|
||
# 数量×包装数量
|
||
new_quantity = quantity * packaging_count
|
||
|
||
# 单价÷包装数量
|
||
new_price = price / packaging_count if price else 0
|
||
|
||
logger.info(f"箱单位处理: 数量: {quantity} -> {new_quantity}, 单价: {price} -> {new_price}, 单位: 箱 -> 瓶")
|
||
|
||
result['quantity'] = new_quantity
|
||
result['price'] = new_price
|
||
result['unit'] = '瓶'
|
||
return result
|
||
|
||
# "提"和"盒"单位处理
|
||
if unit in ['提', '盒']:
|
||
# 如果是三级规格，按件处理
|
||
if level3 is not None:
|
||
# 计算包装数量 - 只乘以最后一级数量
|
||
packaging_count = level3
|
||
|
||
# 数量×包装数量
|
||
new_quantity = quantity * packaging_count
|
||
|
||
# 单价÷包装数量
|
||
new_price = price / packaging_count if price else 0
|
||
|
||
logger.info(f"提/盒单位(三级规格)处理: 数量: {quantity} -> {new_quantity}, 单价: {price} -> {new_price}, 单位: {unit} -> 瓶")
|
||
|
||
result['quantity'] = new_quantity
|
||
result['price'] = new_price
|
||
result['unit'] = '瓶'
|
||
else:
|
||
# 如果是二级规格，保持不变
|
||
logger.info(f"提/盒单位(二级规格)处理: 保持原样 数量: {quantity}, 单价: {price}, 单位: {unit}")
|
||
|
||
return result
|
||
|
||
# 其他单位保持不变
|
||
logger.info(f"其他单位处理: 保持原样 数量: {quantity}, 单价: {price}, 单位: {unit}")
|
||
return result |