28431ee490
🧮 구매 수량 계산 로직: - PIPE: 절단 손실(3mm/절단) + 6M 단위 올림 계산 - 일반 자재: 여유율 + 최소 주문 수량 적용 - 자재별 차별화된 여유율 (VALVE 50%, BOLT 20% 등) 🛒 구매 관리 API: - /purchase/items/calculate: 실시간 구매 수량 계산 - /purchase/items/save: 구매 품목 DB 저장 - /purchase/revision-diff: 리비전간 차이 계산 - /purchase/orders/create: 구매 주문 생성 🧪 테스트 검증: - PIPE 절단 손실 계산: 25,000mm → 5본 (정확) - 여유율 적용: VALVE 2개 → 3개 (50% 예비) - 최소 주문: BOLT 24개 → 50개 (박스 단위) 📱 프론트엔드: - PurchaseConfirmationPage 라우팅 추가 - 구매확정 버튼 → 구매 페이지 이동
526 lines
21 KiB
Python
526 lines
21 KiB
Python
"""
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구매 수량 계산 서비스
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- 자재별 여유율 적용
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- PIPE: 절단 손실 + 6M 단위 계산
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- 기타: 최소 주문 수량 적용
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"""
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import math
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from typing import Dict, List, Tuple
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from sqlalchemy.orm import Session
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from sqlalchemy import text
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# 자재별 기본 여유율
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SAFETY_FACTORS = {
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'PIPE': 1.15, # 15% 추가 (절단 손실)
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'FITTING': 1.10, # 10% 추가 (연결 오차)
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'VALVE': 1.50, # 50% 추가 (예비품)
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'FLANGE': 1.10, # 10% 추가
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'BOLT': 1.20, # 20% 추가 (분실율)
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'GASKET': 1.25, # 25% 추가 (교체주기)
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'INSTRUMENT': 1.00, # 0% 추가 (정확한 수량)
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'DEFAULT': 1.10 # 기본 10% 추가
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}
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# 최소 주문 수량 (자재별)
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MINIMUM_ORDER_QTY = {
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'PIPE': 6000, # 6M 단위
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'FITTING': 1, # 개별 주문 가능
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'VALVE': 1, # 개별 주문 가능
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'FLANGE': 1, # 개별 주문 가능
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'BOLT': 50, # 박스 단위 (50개)
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'GASKET': 10, # 세트 단위
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'INSTRUMENT': 1, # 개별 주문 가능
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'DEFAULT': 1
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}
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def calculate_pipe_purchase_quantity(materials: List[Dict]) -> Dict:
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"""
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PIPE 구매 수량 계산
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- 각 절단마다 3mm 손실
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- 6,000mm (6M) 단위로 올림
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"""
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total_bom_length = 0
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cutting_count = 0
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pipe_details = []
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for material in materials:
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# 길이 정보 추출
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length_mm = float(material.get('length_mm', 0) or 0)
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if length_mm > 0:
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total_bom_length += length_mm
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cutting_count += 1
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pipe_details.append({
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'description': material.get('original_description', ''),
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'length_mm': length_mm,
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'quantity': material.get('quantity', 1)
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})
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# 절단 손실 계산 (각 절단마다 3mm)
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cutting_loss = cutting_count * 3
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# 총 필요 길이 = BOM 길이 + 절단 손실
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required_length = total_bom_length + cutting_loss
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# 6M 단위로 올림 계산
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standard_length = 6000 # 6M = 6,000mm
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pipes_needed = math.ceil(required_length / standard_length) if required_length > 0 else 0
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total_purchase_length = pipes_needed * standard_length
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waste_length = total_purchase_length - required_length if pipes_needed > 0 else 0
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return {
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'bom_quantity': total_bom_length,
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'cutting_count': cutting_count,
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'cutting_loss': cutting_loss,
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'required_length': required_length,
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'pipes_count': pipes_needed,
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'calculated_qty': total_purchase_length,
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'waste_length': waste_length,
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'utilization_rate': (required_length / total_purchase_length * 100) if total_purchase_length > 0 else 0,
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'unit': 'mm',
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'pipe_details': pipe_details
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}
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def calculate_standard_purchase_quantity(category: str, bom_quantity: float,
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safety_factor: float = None) -> Dict:
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"""
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일반 자재 구매 수량 계산
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- 여유율 적용
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- 최소 주문 수량 적용
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"""
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# 여유율 결정
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if safety_factor is None:
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safety_factor = SAFETY_FACTORS.get(category, SAFETY_FACTORS['DEFAULT'])
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# 1단계: 여유율 적용
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safety_qty = bom_quantity * safety_factor
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# 2단계: 최소 주문 수량 확인
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min_order_qty = MINIMUM_ORDER_QTY.get(category, MINIMUM_ORDER_QTY['DEFAULT'])
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# 3단계: 최소 주문 수량과 비교하여 큰 값 선택
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calculated_qty = max(safety_qty, min_order_qty)
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# 4단계: 특별 처리 (BOLT는 박스 단위로 올림)
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if category == 'BOLT' and calculated_qty > min_order_qty:
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calculated_qty = math.ceil(calculated_qty / min_order_qty) * min_order_qty
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return {
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'bom_quantity': bom_quantity,
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'safety_factor': safety_factor,
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'safety_qty': safety_qty,
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'min_order_qty': min_order_qty,
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'calculated_qty': calculated_qty,
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'waste_quantity': calculated_qty - bom_quantity,
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'utilization_rate': (bom_quantity / calculated_qty * 100) if calculated_qty > 0 else 0
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}
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def generate_purchase_items_from_materials(db: Session, file_id: int,
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job_no: str, revision: str) -> List[Dict]:
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"""
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자재 데이터로부터 구매 품목 생성
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"""
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# 1. 파일의 모든 자재 조회
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materials_query = text("""
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SELECT m.*,
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pd.length_mm, pd.outer_diameter, pd.schedule, pd.material_spec as pipe_material_spec,
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fd.fitting_type, fd.connection_method as fitting_connection,
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vd.valve_type, vd.connection_method as valve_connection, vd.pressure_rating as valve_pressure,
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fl.flange_type, fl.pressure_rating as flange_pressure,
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gd.gasket_type, gd.material_type as gasket_material,
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bd.bolt_type, bd.material_standard, bd.diameter,
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id.instrument_type
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FROM materials m
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LEFT JOIN pipe_details pd ON m.id = pd.material_id
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LEFT JOIN fitting_details fd ON m.id = fd.material_id
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LEFT JOIN valve_details vd ON m.id = vd.material_id
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LEFT JOIN flange_details fl ON m.id = fl.material_id
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LEFT JOIN gasket_details gd ON m.id = gd.material_id
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LEFT JOIN bolt_details bd ON m.id = bd.material_id
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LEFT JOIN instrument_details id ON m.id = id.material_id
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WHERE m.file_id = :file_id
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ORDER BY m.classified_category, m.original_description
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""")
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materials = db.execute(materials_query, {"file_id": file_id}).fetchall()
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# 2. 카테고리별로 그룹핑
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grouped_materials = {}
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for material in materials:
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category = material.classified_category or 'OTHER'
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if category not in grouped_materials:
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grouped_materials[category] = []
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grouped_materials[category].append(dict(material))
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# 3. 각 카테고리별로 구매 품목 생성
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purchase_items = []
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for category, category_materials in grouped_materials.items():
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if category == 'PIPE':
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# PIPE는 재질+사이즈+스케줄별로 그룹핑
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pipe_groups = {}
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for material in category_materials:
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# 그룹핑 키 생성
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material_spec = material.get('pipe_material_spec') or material.get('material_grade', '')
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outer_diameter = material.get('outer_diameter') or material.get('main_nom', '')
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schedule = material.get('schedule', '')
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group_key = f"{material_spec}|{outer_diameter}|{schedule}"
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if group_key not in pipe_groups:
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pipe_groups[group_key] = []
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pipe_groups[group_key].append(material)
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# 각 PIPE 그룹별로 구매 수량 계산
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for group_key, group_materials in pipe_groups.items():
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pipe_calc = calculate_pipe_purchase_quantity(group_materials)
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if pipe_calc['calculated_qty'] > 0:
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material_spec, outer_diameter, schedule = group_key.split('|')
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# 품목 코드 생성
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item_code = generate_item_code('PIPE', material_spec, outer_diameter, schedule)
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# 사양 생성
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spec_parts = [f"PIPE {outer_diameter}"]
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if schedule: spec_parts.append(schedule)
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if material_spec: spec_parts.append(material_spec)
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specification = ', '.join(spec_parts)
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purchase_item = {
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'item_code': item_code,
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'category': 'PIPE',
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'specification': specification,
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'material_spec': material_spec,
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'size_spec': outer_diameter,
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'unit': 'mm',
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**pipe_calc,
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'job_no': job_no,
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'revision': revision,
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'file_id': file_id,
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'materials': group_materials
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}
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purchase_items.append(purchase_item)
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else:
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# 기타 자재들은 사양별로 그룹핑
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spec_groups = generate_material_specs_for_category(category_materials, category)
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for spec_key, spec_data in spec_groups.items():
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if spec_data['totalQuantity'] > 0:
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# 구매 수량 계산
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calc_result = calculate_standard_purchase_quantity(
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category,
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spec_data['totalQuantity']
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)
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# 품목 코드 생성
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item_code = generate_item_code(category, spec_data.get('material_spec', ''),
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spec_data.get('size_display', ''))
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purchase_item = {
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'item_code': item_code,
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'category': category,
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'specification': spec_data.get('full_spec', spec_key),
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'material_spec': spec_data.get('material_spec', ''),
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'size_spec': spec_data.get('size_display', ''),
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'unit': spec_data.get('unit', 'EA'),
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**calc_result,
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'job_no': job_no,
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'revision': revision,
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'file_id': file_id,
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'materials': spec_data['items']
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}
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purchase_items.append(purchase_item)
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return purchase_items
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def generate_material_specs_for_category(materials: List[Dict], category: str) -> Dict:
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"""카테고리별 자재 사양 그룹핑 (MaterialsPage.jsx 로직과 동일)"""
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specs = {}
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for material in materials:
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spec_key = ''
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spec_data = {}
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if category == 'FITTING':
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fitting_type = material.get('fitting_type', 'FITTING')
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connection_method = material.get('fitting_connection', '')
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material_spec = material.get('material_grade', '')
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main_nom = material.get('main_nom', '')
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red_nom = material.get('red_nom', '')
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size_display = f"{main_nom} x {red_nom}" if red_nom else main_nom
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spec_parts = [fitting_type]
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if connection_method: spec_parts.append(connection_method)
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full_spec = ', '.join(spec_parts)
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spec_key = f"FITTING|{full_spec}|{material_spec}|{size_display}"
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spec_data = {
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'category': 'FITTING',
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'full_spec': full_spec,
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'material_spec': material_spec,
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'size_display': size_display,
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'unit': 'EA'
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}
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elif category == 'VALVE':
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valve_type = material.get('valve_type', 'VALVE')
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connection_method = material.get('valve_connection', '')
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pressure_rating = material.get('valve_pressure', '')
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material_spec = material.get('material_grade', '')
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main_nom = material.get('main_nom', '')
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spec_parts = [valve_type.replace('_', ' ')]
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if connection_method: spec_parts.append(connection_method.replace('_', ' '))
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if pressure_rating: spec_parts.append(pressure_rating)
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full_spec = ', '.join(spec_parts)
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spec_key = f"VALVE|{full_spec}|{material_spec}|{main_nom}"
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spec_data = {
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'category': 'VALVE',
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'full_spec': full_spec,
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'material_spec': material_spec,
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'size_display': main_nom,
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'unit': 'EA'
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}
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elif category == 'FLANGE':
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flange_type = material.get('flange_type', 'FLANGE')
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pressure_rating = material.get('flange_pressure', '')
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material_spec = material.get('material_grade', '')
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main_nom = material.get('main_nom', '')
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spec_parts = [flange_type]
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if pressure_rating: spec_parts.append(pressure_rating)
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full_spec = ', '.join(spec_parts)
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spec_key = f"FLANGE|{full_spec}|{material_spec}|{main_nom}"
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spec_data = {
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'category': 'FLANGE',
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'full_spec': full_spec,
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'material_spec': material_spec,
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'size_display': main_nom,
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'unit': 'EA'
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}
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elif category == 'BOLT':
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bolt_type = material.get('bolt_type', 'BOLT')
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material_standard = material.get('material_standard', '')
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diameter = material.get('diameter', material.get('main_nom', ''))
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material_spec = material_standard or material.get('material_grade', '')
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spec_parts = [bolt_type.replace('_', ' ')]
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if material_standard: spec_parts.append(material_standard)
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full_spec = ', '.join(spec_parts)
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spec_key = f"BOLT|{full_spec}|{material_spec}|{diameter}"
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spec_data = {
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'category': 'BOLT',
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'full_spec': full_spec,
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'material_spec': material_spec,
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'size_display': diameter,
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'unit': 'EA'
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}
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elif category == 'GASKET':
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gasket_type = material.get('gasket_type', 'GASKET')
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gasket_material = material.get('gasket_material', '')
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material_spec = gasket_material or material.get('material_grade', '')
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main_nom = material.get('main_nom', '')
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spec_parts = [gasket_type]
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if gasket_material: spec_parts.append(gasket_material)
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full_spec = ', '.join(spec_parts)
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spec_key = f"GASKET|{full_spec}|{material_spec}|{main_nom}"
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spec_data = {
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'category': 'GASKET',
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'full_spec': full_spec,
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'material_spec': material_spec,
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'size_display': main_nom,
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'unit': 'EA'
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}
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elif category == 'INSTRUMENT':
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instrument_type = material.get('instrument_type', 'INSTRUMENT')
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material_spec = material.get('material_grade', '')
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main_nom = material.get('main_nom', '')
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full_spec = instrument_type.replace('_', ' ')
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spec_key = f"INSTRUMENT|{full_spec}|{material_spec}|{main_nom}"
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spec_data = {
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'category': 'INSTRUMENT',
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'full_spec': full_spec,
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'material_spec': material_spec,
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'size_display': main_nom,
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'unit': 'EA'
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}
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else:
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# 기타 자재
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material_spec = material.get('material_grade', '')
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size_display = material.get('main_nom') or material.get('size_spec', '')
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spec_key = f"{category}|{material_spec}|{size_display}"
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spec_data = {
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'category': category,
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'full_spec': material_spec,
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'material_spec': material_spec,
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'size_display': size_display,
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'unit': 'EA'
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}
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# 스펙별 수량 집계
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if spec_key not in specs:
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specs[spec_key] = {
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**spec_data,
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'totalQuantity': 0,
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'count': 0,
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'items': []
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}
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specs[spec_key]['totalQuantity'] += material.get('quantity', 0)
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specs[spec_key]['count'] += 1
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specs[spec_key]['items'].append(material)
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return specs
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def generate_item_code(category: str, material_spec: str = '', size_spec: str = '',
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schedule: str = '') -> str:
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"""구매 품목 코드 생성"""
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import hashlib
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# 기본 접두사
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prefix = f"PI-{category}"
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# 재질 약어 생성
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material_abbr = ''
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if 'A106' in material_spec:
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material_abbr = 'A106'
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elif 'A333' in material_spec:
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material_abbr = 'A333'
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elif 'SS316' in material_spec or '316' in material_spec:
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material_abbr = 'SS316'
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elif 'A105' in material_spec:
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material_abbr = 'A105'
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elif material_spec:
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material_abbr = material_spec.replace(' ', '')[:6]
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# 사이즈 약어
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size_abbr = size_spec.replace('"', 'IN').replace(' ', '').replace('x', 'X')[:10]
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|
# 스케줄 (PIPE용)
|
|
schedule_abbr = schedule.replace(' ', '')[:6]
|
|
|
|
# 유니크 해시 생성 (중복 방지)
|
|
unique_str = f"{category}|{material_spec}|{size_spec}|{schedule}"
|
|
hash_suffix = hashlib.md5(unique_str.encode()).hexdigest()[:4].upper()
|
|
|
|
# 최종 코드 조합
|
|
code_parts = [prefix]
|
|
if material_abbr: code_parts.append(material_abbr)
|
|
if size_abbr: code_parts.append(size_abbr)
|
|
if schedule_abbr: code_parts.append(schedule_abbr)
|
|
code_parts.append(hash_suffix)
|
|
|
|
return '-'.join(code_parts)
|
|
|
|
def save_purchase_items_to_db(db: Session, purchase_items: List[Dict]) -> List[int]:
|
|
"""구매 품목을 데이터베이스에 저장"""
|
|
saved_ids = []
|
|
|
|
for item in purchase_items:
|
|
# 기존 품목 확인 (동일 사양이 있는지)
|
|
existing_query = text("""
|
|
SELECT id FROM purchase_items
|
|
WHERE job_no = :job_no AND revision = :revision AND item_code = :item_code
|
|
""")
|
|
existing = db.execute(existing_query, {
|
|
'job_no': item['job_no'],
|
|
'revision': item['revision'],
|
|
'item_code': item['item_code']
|
|
}).fetchone()
|
|
|
|
if existing:
|
|
# 기존 품목 업데이트
|
|
update_query = text("""
|
|
UPDATE purchase_items SET
|
|
bom_quantity = :bom_quantity,
|
|
calculated_qty = :calculated_qty,
|
|
safety_factor = :safety_factor,
|
|
cutting_loss = :cutting_loss,
|
|
pipes_count = :pipes_count,
|
|
waste_length = :waste_length,
|
|
detailed_spec = :detailed_spec,
|
|
updated_at = CURRENT_TIMESTAMP
|
|
WHERE id = :id
|
|
""")
|
|
db.execute(update_query, {
|
|
'id': existing.id,
|
|
'bom_quantity': item['bom_quantity'],
|
|
'calculated_qty': item['calculated_qty'],
|
|
'safety_factor': item.get('safety_factor', 1.0),
|
|
'cutting_loss': item.get('cutting_loss', 0),
|
|
'pipes_count': item.get('pipes_count'),
|
|
'waste_length': item.get('waste_length'),
|
|
'detailed_spec': item.get('detailed_spec', '{}')
|
|
})
|
|
saved_ids.append(existing.id)
|
|
else:
|
|
# 새 품목 생성
|
|
insert_query = text("""
|
|
INSERT INTO purchase_items (
|
|
item_code, category, specification, material_spec, size_spec, unit,
|
|
bom_quantity, safety_factor, minimum_order_qty, calculated_qty,
|
|
cutting_loss, standard_length, pipes_count, waste_length,
|
|
job_no, revision, file_id, is_active, created_by
|
|
) VALUES (
|
|
:item_code, :category, :specification, :material_spec, :size_spec, :unit,
|
|
:bom_quantity, :safety_factor, :minimum_order_qty, :calculated_qty,
|
|
:cutting_loss, :standard_length, :pipes_count, :waste_length,
|
|
:job_no, :revision, :file_id, :is_active, :created_by
|
|
) RETURNING id
|
|
""")
|
|
|
|
result = db.execute(insert_query, {
|
|
'item_code': item['item_code'],
|
|
'category': item['category'],
|
|
'specification': item['specification'],
|
|
'material_spec': item['material_spec'],
|
|
'size_spec': item['size_spec'],
|
|
'unit': item['unit'],
|
|
'bom_quantity': item['bom_quantity'],
|
|
'safety_factor': item.get('safety_factor', 1.0),
|
|
'minimum_order_qty': item.get('min_order_qty', 0),
|
|
'calculated_qty': item['calculated_qty'],
|
|
'cutting_loss': item.get('cutting_loss', 0),
|
|
'standard_length': item.get('standard_length', 6000 if item['category'] == 'PIPE' else None),
|
|
'pipes_count': item.get('pipes_count'),
|
|
'waste_length': item.get('waste_length'),
|
|
'job_no': item['job_no'],
|
|
'revision': item['revision'],
|
|
'file_id': item['file_id'],
|
|
'is_active': True,
|
|
'created_by': 'system'
|
|
})
|
|
|
|
result_row = result.fetchone()
|
|
new_id = result_row[0] if result_row else None
|
|
saved_ids.append(new_id)
|
|
|
|
# 개별 자재와 구매 품목 연결
|
|
for material in item['materials']:
|
|
mapping_query = text("""
|
|
INSERT INTO material_purchase_mapping (material_id, purchase_item_id)
|
|
VALUES (:material_id, :purchase_item_id)
|
|
ON CONFLICT (material_id, purchase_item_id) DO NOTHING
|
|
""")
|
|
db.execute(mapping_query, {
|
|
'material_id': material['id'],
|
|
'purchase_item_id': new_id
|
|
})
|
|
|
|
db.commit()
|
|
return saved_ids |