feat: 도매상 잔고 모달에 월간 매출 추가

- 백제/지오영/수인 월간매출 API 라우트 추가
- 모달 UI: 잔고 + 월간 매출 동시 표시
- 총 주문액 / 총 미수금 요약 표시

backend/analyze_baekje_ledger.py

@@ -0,0 +1,86 @@
+# -*- coding: utf-8 -*-
+"""백제약품 주문 원장 페이지 분석"""
+
+import asyncio
+import json
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+async def analyze_order_ledger():
+    from playwright.async_api import async_playwright
+    
+    username = os.getenv('BAEKJE_USER_ID')
+    password = os.getenv('BAEKJE_PASSWORD')
+    
+    print(f'Username: {username}')
+    
+    async with async_playwright() as p:
+        browser = await p.chromium.launch(headless=False)
+        context = await browser.new_context()
+        page = await context.new_page()
+        
+        # 로그인 페이지
+        await page.goto('https://ibjp.co.kr/dist/login', timeout=15000)
+        await page.wait_for_load_state('networkidle', timeout=10000)
+        
+        # 로그인 폼 입력
+        inputs = await page.locator('input[type="text"], input[type="password"]').all()
+        if len(inputs) >= 2:
+            await inputs[0].fill(username)
+            await inputs[1].fill(password)
+        
+        # 로그인 버튼 클릭
+        buttons = await page.locator('button').all()
+        for btn in buttons:
+            text = await btn.text_content()
+            if '로그인' in (text or ''):
+                await btn.click()
+                break
+        
+        # 로그인 완료 대기
+        try:
+            await page.wait_for_url('**/comOrd**', timeout=15000)
+            print('Login successful, redirected to comOrd')
+        except Exception as e:
+            print(f'URL wait failed: {e}')
+            await asyncio.sleep(3)
+        
+        print(f'Current URL: {page.url}')
+        
+        # 주문 원장 페이지로 이동
+        await page.goto('https://ibjp.co.kr/dist/ordLedger', timeout=15000)
+        await page.wait_for_load_state('networkidle', timeout=15000)
+        
+        print(f'Order Ledger URL: {page.url}')
+        
+        # 페이지 HTML 저장
+        html = await page.content()
+        with open('ordLedger_page.html', 'w', encoding='utf-8') as f:
+            f.write(html)
+        print('Page HTML saved to ordLedger_page.html')
+        
+        # 스크린샷 저장
+        await page.screenshot(path='ordLedger_screenshot.png', full_page=True)
+        print('Screenshot saved')
+        
+        # 테이블 데이터 분석
+        tables = await page.locator('table').all()
+        print(f'Found {len(tables)} tables')
+        
+        for i, table in enumerate(tables):
+            headers = await table.locator('th').all()
+            header_texts = [await h.text_content() for h in headers]
+            print(f'Table {i} headers: {header_texts}')
+        
+        # 페이지 텍스트 출력 (분석용)
+        body_text = await page.locator('body').text_content()
+        print('\n=== Page Text Preview ===')
+        print(body_text[:3000] if body_text else 'No text')
+        
+        await asyncio.sleep(30)  # 페이지 확인 시간
+        await browser.close()
+
+if __name__ == '__main__':
+    asyncio.run(analyze_order_ledger())

backend/geoyoung_api.py

@@ -447,6 +447,37 @@ def api_get_balance():
         }), 501
 
 
+@geoyoung_bp.route('/monthly-sales', methods=['GET'])
+def api_get_monthly_sales():
+    """
+    월간 매출 조회
+    
+    GET /api/geoyoung/monthly-sales?year=2026&month=3
+    """
+    from datetime import datetime
+    
+    year = request.args.get('year', type=int)
+    month = request.args.get('month', type=int)
+    
+    # 기본값: 현재 월
+    if not year or not month:
+        now = datetime.now()
+        year = year or now.year
+        month = month or now.month
+    
+    session = get_geo_session()
+    
+    if hasattr(session, 'get_monthly_sales'):
+        result = session.get_monthly_sales(year, month)
+        return jsonify(result)
+    else:
+        return jsonify({
+            'success': False,
+            'error': 'NOT_IMPLEMENTED',
+            'message': '지오영 월간 매출 조회 미구현'
+        }), 501
+
+
 # ========== 하위 호환성 ==========
 
 # 기존 코드에서 직접 클래스 참조하는 경우를 위해

backend/sooin_api.py

@@ -134,6 +134,55 @@ def api_sooin_balance():
         }), 500
 
 
+@sooin_bp.route('/monthly-sales', methods=['GET'])
+def api_sooin_monthly_sales():
+    """
+    수인약품 월간 매출 조회 API
+    
+    GET /api/sooin/monthly-sales?year=2026&month=3
+    
+    Returns:
+        {
+            "success": true,
+            "total_amount": 3700239,      // 월간 매출 합계
+            "total_paid": 0,              // 월간 입금 합계
+            "ending_balance": 14293001,   // 월말 잔액
+            "opening_balance": 10592762,  // 전일(기초) 잔액
+            "from_date": "2026-03-01",
+            "to_date": "2026-03-31"
+        }
+    """
+    from datetime import datetime
+    
+    year = flask_request.args.get('year', type=int)
+    month = flask_request.args.get('month', type=int)
+    
+    # 기본값: 현재 월
+    if not year or not month:
+        now = datetime.now()
+        year = year or now.year
+        month = month or now.month
+    
+    try:
+        session = get_sooin_session()
+        if hasattr(session, 'get_monthly_sales'):
+            result = session.get_monthly_sales(year, month)
+            return jsonify(result)
+        else:
+            return jsonify({
+                'success': False,
+                'error': 'NOT_IMPLEMENTED',
+                'message': '수인약품 월간 매출 조회 미구현'
+            }), 501
+    except Exception as e:
+        logger.error(f"수인약품 월간 매출 조회 오류: {e}")
+        return jsonify({
+            'success': False,
+            'error': 'MONTHLY_SALES_ERROR',
+            'message': str(e)
+        }), 500
+
+
 @sooin_bp.route('/cart', methods=['GET'])
 def api_sooin_cart():
     """장바구니 조회 API"""

backend/templates/admin_rx_usage.html

@@ -2256,26 +2256,43 @@
         text-transform: uppercase;
         letter-spacing: 0.5px;
     }
-    .balance-total {
+    .balance-summary {
         background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(6, 182, 212, 0.1));
         border-radius: 12px;
         padding: 20px;
-        text-align: center;
+        display: flex;
-        margin-top: 8px;
+        justify-content: space-around;
+        align-items: center;
+        margin-top: 12px;
+        gap: 16px;
     }
-    .balance-total-label {
+    .summary-item {
+        text-align: center;
+        flex: 1;
+    }
+    .summary-label {
         font-size: 12px;
         color: var(--text-muted);
         margin-bottom: 8px;
     }
-    .balance-total-value {
+    .summary-value {
-        font-size: 28px;
+        font-size: 24px;
         font-weight: 700;
         font-family: 'JetBrains Mono', monospace;
+    }
+    .summary-value.sales {
+        color: #10b981;
+    }
+    .summary-value.balance {
         background: linear-gradient(135deg, #a855f7, #06b6d4);
         -webkit-background-clip: text;
         -webkit-text-fill-color: transparent;
     }
+    .summary-divider {
+        width: 1px;
+        height: 50px;
+        background: var(--border);
+    }
     .balance-updated {
         text-align: center;
         font-size: 11px;
@@ -2300,17 +2317,23 @@
         baekje: { 
             id: 'baekje', name: '백제약품', icon: '💉', 
             logo: '/static/img/logo_baekje.svg',
-            color: '#f59e0b', api: '/api/baekje/balance' 
+            color: '#f59e0b', 
+            balanceApi: '/api/baekje/balance',
+            salesApi: '/api/baekje/monthly-sales'
         },
         geoyoung: { 
             id: 'geoyoung', name: '지오영', icon: '🏭', 
             logo: '/static/img/logo_geoyoung.ico',
-            color: '#06b6d4', api: '/api/geoyoung/balance' 
+            color: '#06b6d4', 
+            balanceApi: '/api/geoyoung/balance',
+            salesApi: '/api/geoyoung/monthly-sales'
         },
         sooin: { 
             id: 'sooin', name: '수인약품', icon: '💊', 
             logo: '/static/img/logo_sooin.svg',
-            color: '#a855f7', api: '/api/sooin/balance' 
+            color: '#a855f7', 
+            balanceApi: '/api/sooin/balance',
+            salesApi: '/api/sooin/monthly-sales'
         }
     };
     const WHOLESALER_ORDER = ['baekje', 'geoyoung', 'sooin'];
@@ -2320,36 +2343,47 @@
         content.innerHTML = `
             <div class="loading-state">
                 <div class="loading-spinner"></div>
-                <div>잔고 조회 중...</div>
+                <div>잔고 및 매출 조회 중...</div>
             </div>`;
         
         const wholesalers = WHOLESALER_ORDER.map(id => WHOLESALER_CONFIG[id]);
+        const now = new Date();
+        const year = now.getFullYear();
+        const month = now.getMonth() + 1;
         
-        const results = {};
+        const balanceResults = {};
+        const salesResults = {};
         let totalBalance = 0;
+        let totalSales = 0;
         
-        // 병렬로 조회
+        // 병렬로 잔고 + 월간매출 조회
-        await Promise.all(wholesalers.map(async (ws) => {
+        await Promise.all(wholesalers.flatMap(ws => [
-            try {
+            // 잔고 조회
-                const resp = await fetch(ws.api, { timeout: 30000 });
+            fetch(ws.balanceApi).then(r => r.json()).then(data => {
-                const data = await resp.json();
+                balanceResults[ws.id] = data;
-                results[ws.id] = data;
+                if (data.success && data.balance) totalBalance += data.balance;
-                if (data.success && data.balance) {
+            }).catch(err => {
-                    totalBalance += data.balance;
+                balanceResults[ws.id] = { success: false, error: err.message };
-                }
+            }),
-            } catch (err) {
+            // 월간 매출 조회
-                results[ws.id] = { success: false, error: err.message };
+            fetch(`${ws.salesApi}?year=${year}&month=${month}`).then(r => r.json()).then(data => {
-            }
+                salesResults[ws.id] = data;
-        }));
+                if (data.success && data.total_amount) totalSales += data.total_amount;
+            }).catch(err => {
+                salesResults[ws.id] = { success: false, error: err.message };
+            })
+        ]));
         
         // 결과 렌더링
         let html = '<div class="balance-grid">';
         
         wholesalers.forEach(ws => {
-            const data = results[ws.id];
+            const balData = balanceResults[ws.id] || {};
-            const isError = !data.success;
+            const salesData = salesResults[ws.id] || {};
-            const balance = data.balance || 0;
+            const isError = !balData.success;
-            const prevBalance = data.prev_balance || data.prev_month_balance || 0;
+            const balance = balData.balance || 0;
+            const monthlySales = salesData.total_amount || 0;
+            const monthlyPaid = salesData.total_paid || 0;
             
             html += `
                 <div class="balance-card ${isError ? 'error' : ''}">
@@ -2362,8 +2396,9 @@
                         <div class="balance-name">${ws.name}</div>
                         <div class="balance-detail">
                             ${isError 
-                                ? `❌ ${data.error || '조회 실패'}` 
+                                ? `❌ ${balData.error || '조회 실패'}` 
-                                : `전월/전일: ${prevBalance.toLocaleString()}원`}
+                                : `${month}월 매출: <span style="color:${ws.color};font-weight:600;">${monthlySales.toLocaleString()}원</span>
+                                   ${monthlyPaid > 0 ? ` · 입금: ${monthlyPaid.toLocaleString()}원` : ''}`}
                         </div>
                     </div>
                     <div class="balance-amount">
@@ -2376,9 +2411,16 @@
         });
         
         html += `
-            <div class="balance-total">
+            <div class="balance-summary">
-                <div class="balance-total-label">총 미수금</div>
+                <div class="summary-item">
-                <div class="balance-total-value">${totalBalance.toLocaleString()}원</div>
+                    <div class="summary-label">📊 ${month}월 총 주문</div>
+                    <div class="summary-value sales">${totalSales.toLocaleString()}원</div>
+                </div>
+                <div class="summary-divider"></div>
+                <div class="summary-item">
+                    <div class="summary-label">💰 총 미수금</div>
+                    <div class="summary-value balance">${totalBalance.toLocaleString()}원</div>
+                </div>
             </div>
             <div class="balance-updated">🕐 ${new Date().toLocaleString('ko-KR')}</div>
         </div>`;

backend/test_baekje_ledger_api.py

@@ -0,0 +1,101 @@
+# -*- coding: utf-8 -*-
+"""백제약품 주문 원장 API 분석"""
+
+import json
+import requests
+from datetime import datetime, timedelta
+import calendar
+
+# 저장된 토큰 로드
+TOKEN_FILE = r'c:\Users\청춘약국\source\pharmacy-wholesale-api\.baekje_token.json'
+with open(TOKEN_FILE, 'r', encoding='utf-8') as f:
+    token_data = json.load(f)
+
+token = token_data['token']
+cust_cd = token_data['cust_cd']
+
+print(f"Token expires: {datetime.fromtimestamp(token_data['expires'])}")
+print(f"Customer code: {cust_cd}")
+
+# API 세션 설정
+session = requests.Session()
+session.headers.update({
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
+    'Accept': 'application/json, text/plain, */*',
+    'Accept-Language': 'ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7',
+    'Origin': 'https://ibjp.co.kr',
+    'Referer': 'https://ibjp.co.kr/',
+    'Authorization': f'Bearer {token}'
+})
+
+API_URL = "https://www.ibjp.co.kr"
+
+# 1. 주문 원장 API 시도 - 다양한 엔드포인트
+endpoints = [
+    '/ordLedger/listSearch',
+    '/ordLedger/list',
+    '/ord/ledgerList',
+    '/ord/ledgerSearch',
+    '/cust/ordLedger',
+    '/custOrd/ledgerList',
+    '/ordHist/listSearch',
+    '/ordHist/list',
+]
+
+# 날짜 설정 (이번 달)
+today = datetime.now()
+year = today.year
+month = today.month
+_, last_day = calendar.monthrange(year, month)
+from_date = f"{year}{month:02d}01"
+to_date = f"{year}{month:02d}{last_day:02d}"
+
+print(f"\n조회 기간: {from_date} ~ {to_date}")
+print("\n=== API 엔드포인트 탐색 ===\n")
+
+params = {
+    'custCd': cust_cd,
+    'startDt': from_date,
+    'endDt': to_date,
+    'stDate': from_date,
+    'edDate': to_date,
+    'year': str(year),
+    'month': f"{month:02d}",
+}
+
+for endpoint in endpoints:
+    try:
+        # GET 시도
+        resp = session.get(f"{API_URL}{endpoint}", params=params, timeout=10)
+        print(f"GET {endpoint}: {resp.status_code}")
+        if resp.status_code == 200:
+            try:
+                data = resp.json()
+                print(f"  -> JSON Response (first 500 chars): {str(data)[:500]}")
+            except:
+                print(f"  -> Text (first 200 chars): {resp.text[:200]}")
+    except Exception as e:
+        print(f"GET {endpoint}: Error - {e}")
+    
+    try:
+        # POST 시도
+        resp = session.post(f"{API_URL}{endpoint}", json=params, timeout=10)
+        print(f"POST {endpoint}: {resp.status_code}")
+        if resp.status_code == 200:
+            try:
+                data = resp.json()
+                print(f"  -> JSON Response (first 500 chars): {str(data)[:500]}")
+            except:
+                print(f"  -> Text (first 200 chars): {resp.text[:200]}")
+    except Exception as e:
+        print(f"POST {endpoint}: Error - {e}")
+
+# 2. 이미 알려진 API로 데이터 확인
+print("\n=== 알려진 API 테스트 ===\n")
+
+# 월간 잔고 조회 (이미 있는 함수에서 사용)
+resp = session.get(f"{API_URL}/custMonth/listSearch", params={'custCd': cust_cd, 'year': str(year), 'endDt': to_date}, timeout=10)
+print(f"custMonth/listSearch: {resp.status_code}")
+if resp.status_code == 200:
+    data = resp.json()
+    print(f"  -> {json.dumps(data, ensure_ascii=False, indent=2)[:1500]}")

backend/test_baekje_ledger_api2.py

@@ -0,0 +1,126 @@
+# -*- coding: utf-8 -*-
+"""백제약품 주문 원장 API 분석 - 상세 탐색"""
+
+import json
+import requests
+from datetime import datetime
+import calendar
+
+# 저장된 토큰 로드
+TOKEN_FILE = r'c:\Users\청춘약국\source\pharmacy-wholesale-api\.baekje_token.json'
+with open(TOKEN_FILE, 'r', encoding='utf-8') as f:
+    token_data = json.load(f)
+
+token = token_data['token']
+cust_cd = token_data['cust_cd']
+
+# API 세션 설정
+session = requests.Session()
+session.headers.update({
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
+    'Accept': 'application/json, text/plain, */*',
+    'Accept-Language': 'ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7',
+    'Origin': 'https://ibjp.co.kr',
+    'Referer': 'https://ibjp.co.kr/',
+    'Authorization': f'Bearer {token}'
+})
+
+API_URL = "https://www.ibjp.co.kr"
+
+today = datetime.now()
+year = today.year
+month = today.month
+_, last_day = calendar.monthrange(year, month)
+
+print("=== 주문 원장 API 탐색 (다양한 파라미터) ===\n")
+
+# 날짜 형식 변형
+date_formats = [
+    {'startDt': f'{year}{month:02d}01', 'endDt': f'{year}{month:02d}{last_day:02d}'},
+    {'stDt': f'{year}{month:02d}01', 'edDt': f'{year}{month:02d}{last_day:02d}'},
+    {'fromDate': f'{year}-{month:02d}-01', 'toDate': f'{year}-{month:02d}-{last_day:02d}'},
+    {'strDt': f'{year}{month:02d}01', 'endDt': f'{year}{month:02d}{last_day:02d}'},
+    {'ordDt': f'{year}{month:02d}'},
+]
+
+endpoints = [
+    '/ordLedger/listSearch',
+    '/ordLedger/search',
+    '/ordLedger/ledgerList',
+    '/cust/ordLedgerList',
+    '/cust/ledger',
+    '/ord/histList',
+    '/ord/history',
+    '/ord/list',
+]
+
+for endpoint in endpoints:
+    for params in date_formats:
+        full_params = {**params, 'custCd': cust_cd}
+        try:
+            resp = session.get(f"{API_URL}{endpoint}", params=full_params, timeout=10)
+            if resp.status_code == 200:
+                print(f"✓ GET {endpoint} {params}: {resp.status_code}")
+                try:
+                    data = resp.json()
+                    print(f"  -> {str(data)[:300]}")
+                except:
+                    print(f"  -> {resp.text[:200]}")
+        except Exception as e:
+            pass
+            
+        try:
+            resp = session.post(f"{API_URL}{endpoint}", json=full_params, timeout=10)
+            if resp.status_code == 200:
+                print(f"✓ POST {endpoint} {params}: {resp.status_code}")
+                try:
+                    data = resp.json()
+                    print(f"  -> {str(data)[:300]}")
+                except:
+                    print(f"  -> {resp.text[:200]}")
+        except Exception as e:
+            pass
+
+print("\n=== 주문 이력 관련 API ===\n")
+
+# 주문 이력 조회 시도
+order_endpoints = [
+    '/ord/ordList',
+    '/ord/orderHistory',
+    '/ordReg/list',
+    '/ordReg/history',
+    '/order/list',
+    '/order/history',
+]
+
+for endpoint in order_endpoints:
+    try:
+        params = {'custCd': cust_cd, 'startDt': f'{year}{month:02d}01', 'endDt': f'{year}{month:02d}{last_day:02d}'}
+        resp = session.get(f"{API_URL}{endpoint}", params=params, timeout=10)
+        print(f"GET {endpoint}: {resp.status_code}")
+        if resp.status_code == 200:
+            try:
+                data = resp.json()
+                print(f"  -> {str(data)[:500]}")
+            except:
+                print(f"  -> {resp.text[:200]}")
+    except:
+        pass
+
+print("\n=== custMonth/listSearch 상세 데이터 분석 ===\n")
+
+# 이미 작동하는 API의 데이터 상세 분석
+resp = session.get(f"{API_URL}/custMonth/listSearch", params={'custCd': cust_cd, 'year': str(year), 'endDt': f'{year}{month:02d}{last_day:02d}'}, timeout=10)
+if resp.status_code == 200:
+    data = resp.json()
+    print("월간 데이터 구조:")
+    for item in data:
+        print(f"\n월: {item.get('BALANCE_YM')}")
+        print(f"  매출액(SALE_AMT): {item.get('SALE_AMT'):,}")
+        print(f"  반품액(BACK_AMT): {item.get('BACK_AMT'):,}")
+        print(f"  순반품(PURE_BACK_AMT): {item.get('PURE_BACK_AMT'):,}")
+        print(f"  순매출(TOTAL_AMT): {item.get('TOTAL_AMT'):,}")
+        print(f"  입금액(PAY_CASH_AMT): {item.get('PAY_CASH_AMT'):,}")
+        print(f"  전월이월(PRE_TOTAL_AMT): {item.get('PRE_TOTAL_AMT'):,}")
+        print(f"  월말잔고(BALANCE_A_AMT): {item.get('BALANCE_A_AMT'):,}")
+        print(f"  회전일수(ROTATE_DAY): {item.get('ROTATE_DAY')}")

backend/test_baekje_monthly_sales.py

@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+"""백제약품 get_monthly_sales() 테스트"""
+
+import os
+import sys
+
+# wholesale 패키지 경로 추가
+sys.path.insert(0, r'c:\Users\청춘약국\source\pharmacy-wholesale-api')
+os.chdir(r'c:\Users\청춘약국\source\pharmacy-pos-qr-system\backend')
+
+from dotenv import load_dotenv
+load_dotenv()
+
+from wholesale import BaekjeSession
+
+def test_monthly_sales():
+    print("=" * 60)
+    print("백제약품 월간 매출 조회 테스트")
+    print("=" * 60)
+    
+    session = BaekjeSession()
+    
+    # 현재 월 조회
+    from datetime import datetime
+    now = datetime.now()
+    year = now.year
+    month = now.month
+    
+    print(f"\n1. 현재 월 ({year}-{month:02d}) 조회:")
+    result = session.get_monthly_sales(year, month)
+    print(f"   Success: {result.get('success')}")
+    if result.get('success'):
+        print(f"   월간 매출: {result.get('total_amount'):,}원")
+        print(f"   월간 반품: {result.get('total_returns'):,}원")
+        print(f"   순매출: {result.get('net_amount'):,}원")
+        print(f"   월간 입금: {result.get('total_paid'):,}원")
+        print(f"   월말 잔고: {result.get('ending_balance'):,}원")
+        print(f"   전월이월: {result.get('prev_balance'):,}원")
+        print(f"   회전일수: {result.get('rotate_days')}")
+        print(f"   조회기간: {result.get('from_date')} ~ {result.get('to_date')}")
+    else:
+        print(f"   Error: {result.get('error')}")
+    
+    # 전월 조회
+    prev_month = month - 1 if month > 1 else 12
+    prev_year = year if month > 1 else year - 1
+    
+    print(f"\n2. 전월 ({prev_year}-{prev_month:02d}) 조회:")
+    result = session.get_monthly_sales(prev_year, prev_month)
+    print(f"   Success: {result.get('success')}")
+    if result.get('success'):
+        print(f"   월간 매출: {result.get('total_amount'):,}원")
+        print(f"   월간 반품: {result.get('total_returns'):,}원")
+        print(f"   순매출: {result.get('net_amount'):,}원")
+        print(f"   월간 입금: {result.get('total_paid'):,}원")
+        print(f"   월말 잔고: {result.get('ending_balance'):,}원")
+        print(f"   전월이월: {result.get('prev_balance'):,}원")
+        print(f"   회전일수: {result.get('rotate_days')}")
+        print(f"   조회기간: {result.get('from_date')} ~ {result.get('to_date')}")
+    else:
+        print(f"   Error: {result.get('error')}")
+    
+    # 2달 전 조회
+    prev_month2 = prev_month - 1 if prev_month > 1 else 12
+    prev_year2 = prev_year if prev_month > 1 else prev_year - 1
+    
+    print(f"\n3. 2달 전 ({prev_year2}-{prev_month2:02d}) 조회:")
+    result = session.get_monthly_sales(prev_year2, prev_month2)
+    print(f"   Success: {result.get('success')}")
+    if result.get('success'):
+        print(f"   월간 매출: {result.get('total_amount'):,}원")
+        print(f"   월간 반품: {result.get('total_returns'):,}원")
+        print(f"   순매출: {result.get('net_amount'):,}원")
+        print(f"   월간 입금: {result.get('total_paid'):,}원")
+        print(f"   월말 잔고: {result.get('ending_balance'):,}원")
+    else:
+        print(f"   Error: {result.get('error')}")
+    
+    print("\n" + "=" * 60)
+    print("테스트 완료!")
+    print("=" * 60)
+
+if __name__ == '__main__':
+    test_monthly_sales()