<!DOCTYPE html>
<html lang="ko">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>판매 상세 조회 - 청춘약국</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8fafc;
            -webkit-font-smoothing: antialiased;
            color: #1e293b;
        }

        /* ── 헤더 ── */
        .header {
            background: linear-gradient(135deg, #0f766e 0%, #0d9488 50%, #14b8a6 100%);
            padding: 28px 32px 24px;
            color: #fff;
        }
        .header-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }
        .header-nav a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
        }
        .header-nav a:hover { color: #fff; }
        .header h1 {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 6px;
        }
        .header p {
            font-size: 14px;
            opacity: 0.85;
        }

        /* ── 컨텐츠 ── */
        .content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 24px 20px 60px;
        }

        /* ── 검색/필터 영역 ── */
        .search-section {
            background: #fff;
            border-radius: 14px;
            padding: 20px 24px;
            margin-bottom: 20px;
            border: 1px solid #e2e8f0;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: flex-end;
        }
        .search-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .search-group label {
            font-size: 12px;
            font-weight: 600;
            color: #64748b;
        }
        .search-group input, .search-group select {
            padding: 10px 14px;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            font-size: 14px;
            font-family: inherit;
            min-width: 150px;
        }
        .search-group input:focus, .search-group select:focus {
            outline: none;
            border-color: #0d9488;
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
        }
        .search-btn {
            background: #0d9488;
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-btn:hover { background: #0f766e; }

        /* ── 통계 카드 ── */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
            margin-bottom: 24px;
        }
        .stat-card {
            background: #fff;
            border-radius: 14px;
            padding: 18px 20px;
            border: 1px solid #e2e8f0;
        }
        .stat-label {
            font-size: 12px;
            font-weight: 600;
            color: #94a3b8;
            margin-bottom: 6px;
        }
        .stat-value {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -1px;
        }
        .stat-value.teal { color: #0d9488; }
        .stat-value.blue { color: #3b82f6; }
        .stat-value.purple { color: #8b5cf6; }
        .stat-value.orange { color: #f59e0b; }

        /* ── 테이블 ── */
        .table-wrap {
            background: #fff;
            border-radius: 14px;
            border: 1px solid #e2e8f0;
            overflow: hidden;
        }
        .table-header {
            padding: 16px 20px;
            border-bottom: 1px solid #e2e8f0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .table-title {
            font-size: 16px;
            font-weight: 700;
        }
        .table-count {
            font-size: 13px;
            color: #64748b;
        }
        table {
            width: 100%;
            border-collapse: collapse;
        }
        thead th {
            background: #f8fafc;
            padding: 12px 14px;
            font-size: 12px;
            font-weight: 600;
            color: #64748b;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
            white-space: nowrap;
        }
        tbody td {
            padding: 14px;
            font-size: 13px;
            color: #334155;
            border-bottom: 1px solid #f1f5f9;
            vertical-align: middle;
        }
        tbody tr:hover { background: #f8fafc; }
        tbody tr:last-child td { border-bottom: none; }

        /* ── 코드 스타일 ── */
        .code {
            font-family: 'JetBrains Mono', monospace;
            font-size: 12px;
            padding: 4px 8px;
            border-radius: 6px;
            display: inline-block;
        }
        .code-drug {
            background: #dbeafe;
            color: #1e40af;
        }
        .code-barcode {
            background: #d1fae5;
            color: #065f46;
        }
        .code-standard {
            background: #fef3c7;
            color: #92400e;
        }
        .code-na {
            background: #f1f5f9;
            color: #94a3b8;
        }

        /* ── 제품명 ── */
        .product-name {
            font-weight: 600;
            color: #1e293b;
        }
        .product-category {
            font-size: 11px;
            color: #94a3b8;
            margin-top: 2px;
        }

        /* ── 금액 ── */
        .price {
            font-weight: 600;
            text-align: right;
        }
        .qty {
            text-align: center;
            font-weight: 500;
        }

        /* ── 코드 전환 버튼 ── */
        .code-toggle {
            display: flex;
            gap: 4px;
            margin-bottom: 12px;
        }
        .code-toggle button {
            padding: 6px 12px;
            border: 1px solid #e2e8f0;
            background: #fff;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
        }
        .code-toggle button.active {
            background: #0d9488;
            color: #fff;
            border-color: #0d9488;
        }
        .code-toggle button:hover:not(.active) {
            background: #f8fafc;
        }

        /* ── 빈 상태 ── */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: #94a3b8;
        }

        /* ── 로딩 ── */
        .loading {
            text-align: center;
            padding: 40px;
            color: #64748b;
        }

        /* ── QR 인쇄 버튼 ── */
        .btn-qr {
            background: #8b5cf6;
            color: #fff;
            border: none;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 11px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-qr:hover { background: #7c3aed; }
        .btn-qr:disabled {
            background: #cbd5e1;
            cursor: not-allowed;
        }
        .btn-qr.printing {
            background: #f59e0b;
        }

        /* ── 모달 ── */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        .modal-overlay.active { display: flex; }
        .modal-box {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            max-width: 400px;
            width: 90%;
            text-align: center;
        }
        .modal-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .modal-preview {
            margin: 16px 0;
        }
        .modal-preview img {
            max-width: 200px;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
        }

        /* ── 수량 선택기 ── */
        .qty-selector {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0;
            margin: 20px 0;
        }
        .qty-btn {
            width: 44px;
            height: 44px;
            border: none;
            background: #f1f5f9;
            font-size: 24px;
            font-weight: 600;
            color: #64748b;
            cursor: pointer;
            transition: all 0.15s;
            display: flex;
            align-items: center;
            justify-content: center;
            user-select: none;
        }
        .qty-btn:first-child {
            border-radius: 12px 0 0 12px;
        }
        .qty-btn:last-child {
            border-radius: 0 12px 12px 0;
        }
        .qty-btn:hover {
            background: #e2e8f0;
            color: #334155;
        }
        .qty-btn:active {
            transform: scale(0.95);
            background: #cbd5e1;
        }
        .qty-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }
        .qty-value {
            width: 64px;
            height: 44px;
            background: #fff;
            border: 2px solid #e2e8f0;
            border-left: none;
            border-right: none;
            font-size: 20px;
            font-weight: 700;
            color: #1e293b;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .qty-label {
            font-size: 13px;
            color: #64748b;
            margin-bottom: 8px;
        }

        .modal-btns {
            display: flex;
            gap: 12px;
            justify-content: center;
            margin-top: 20px;
        }
        .modal-btn {
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.15s;
        }
        .modal-btn.cancel {
            background: #f1f5f9;
            color: #64748b;
        }
        .modal-btn.cancel:hover { background: #e2e8f0; }
        .modal-btn.confirm {
            background: #8b5cf6;
            color: #fff;
        }
        .modal-btn.confirm:hover { background: #7c3aed; }
        .modal-btn.confirm:active { transform: scale(0.98); }

        /* ── 반응형 ── */
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .search-section { flex-direction: column; }
            .search-group { width: 100%; }
            .search-group input, .search-group select { width: 100%; }
            .table-wrap { overflow-x: auto; }
            table { min-width: 900px; }
        }
    </style>
</head>
<body>
    <div class="header">
        <div class="header-nav">
            <a href="/admin">← 관리자 홈</a>
            <div>
                <a href="/admin/sales" style="margin-right: 16px;">판매 내역</a>
                <a href="/admin/ai-crm" style="margin-right: 16px;">AI 업셀링</a>
                <a href="/admin/ai-gw">Gateway 모니터</a>
            </div>
        </div>
        <h1>판매 상세 조회</h1>
        <p>상품코드 · 바코드 · 표준코드 매핑 조회</p>
    </div>

    <div class="content">
        <!-- 검색/필터 -->
        <div class="search-section">
            <div class="search-group">
                <label>조회 기간</label>
                <select id="periodSelect">
                    <option value="1">오늘</option>
                    <option value="7" selected>최근 7일</option>
                    <option value="30">최근 30일</option>
                </select>
            </div>
            <div class="search-group">
                <label>검색 (상품명/코드)</label>
                <input type="text" id="searchInput" placeholder="타이레놀, LB000...">
            </div>
            <div class="search-group">
                <label>바코드 필터</label>
                <select id="barcodeFilter">
                    <option value="all">전체</option>
                    <option value="has">바코드 있음</option>
                    <option value="none">바코드 없음</option>
                </select>
            </div>
            <button class="search-btn" onclick="loadSalesData()">조회</button>
        </div>

        <!-- 통계 -->
        <div class="stats-grid">
            <div class="stat-card">
                <div class="stat-label">총 판매 건수</div>
                <div class="stat-value teal" id="statTotal">-</div>
            </div>
            <div class="stat-card">
                <div class="stat-label">총 매출액</div>
                <div class="stat-value blue" id="statAmount">-</div>
            </div>
            <div class="stat-card">
                <div class="stat-label">바코드 매핑률</div>
                <div class="stat-value purple" id="statBarcode">-</div>
            </div>
            <div class="stat-card">
                <div class="stat-label">고유 상품 수</div>
                <div class="stat-value orange" id="statProducts">-</div>
            </div>
        </div>

        <!-- 코드 표시 토글 -->
        <div class="code-toggle">
            <button class="active" data-code="drug" onclick="setCodeView('drug')">상품코드</button>
            <button data-code="barcode" onclick="setCodeView('barcode')">바코드</button>
            <button data-code="standard" onclick="setCodeView('standard')">표준코드</button>
            <button data-code="all" onclick="setCodeView('all')">전체 표시</button>
        </div>

        <!-- 테이블 -->
        <div class="table-wrap">
            <div class="table-header">
                <div class="table-title">판매 내역</div>
                <div class="table-count" id="tableCount">-</div>
            </div>
            <table>
                <thead>
                    <tr>
                        <th>판매일시</th>
                        <th>상품명</th>
                        <th id="codeHeader">상품코드</th>
                        <th>수량</th>
                        <th>단가</th>
                        <th>합계</th>
                        <th>QR</th>
                    </tr>
                </thead>
                <tbody id="salesTableBody">
                    <tr><td colspan="7" class="loading">로딩 중...</td></tr>
                </tbody>
            </table>
        </div>
    </div>

    <script>
    let salesData = [];
    let currentCodeView = 'drug';

    function setCodeView(view) {
        currentCodeView = view;
        document.querySelectorAll('.code-toggle button').forEach(btn => {
            btn.classList.toggle('active', btn.dataset.code === view);
        });
        
        const header = document.getElementById('codeHeader');
        if (view === 'drug') header.textContent = '상품코드';
        else if (view === 'barcode') header.textContent = '바코드';
        else if (view === 'standard') header.textContent = '표준코드';
        else header.textContent = '코드 (상품/바코드/표준)';
        
        renderTable();
    }

    function formatPrice(num) {
        return new Intl.NumberFormat('ko-KR').format(num) + '원';
    }

    function renderCodeCell(item) {
        if (currentCodeView === 'drug') {
            return `<span class="code code-drug">${item.drug_code}</span>`;
        } else if (currentCodeView === 'barcode') {
            return item.barcode 
                ? `<span class="code code-barcode">${item.barcode}</span>`
                : `<span class="code code-na">N/A</span>`;
        } else if (currentCodeView === 'standard') {
            return item.standard_code 
                ? `<span class="code code-standard">${item.standard_code}</span>`
                : `<span class="code code-na">N/A</span>`;
        } else {
            // 전체 표시
            let html = `<span class="code code-drug">${item.drug_code}</span><br>`;
            html += item.barcode 
                ? `<span class="code code-barcode">${item.barcode}</span><br>`
                : `<span class="code code-na">바코드 없음</span><br>`;
            html += item.standard_code 
                ? `<span class="code code-standard">${item.standard_code}</span>`
                : `<span class="code code-na">표준코드 없음</span>`;
            return html;
        }
    }

    function renderTable() {
        const tbody = document.getElementById('salesTableBody');
        
        if (salesData.length === 0) {
            tbody.innerHTML = '<tr><td colspan="7" class="empty-state">판매 내역이 없습니다</td></tr>';
            return;
        }

        tbody.innerHTML = salesData.map((item, idx) => `
            <tr>
                <td style="white-space:nowrap;font-size:12px;color:#64748b;">${item.sale_date}</td>
                <td>
                    <div class="product-name">${escapeHtml(item.product_name)}</div>
                    ${item.supplier ? `<div class="product-category">${escapeHtml(item.supplier)}</div>` : ''}
                </td>
                <td>${renderCodeCell(item)}</td>
                <td class="qty">${item.quantity}</td>
                <td class="price">${formatPrice(item.unit_price)}</td>
                <td class="price">${formatPrice(item.total_price)}</td>
                <td>
                    <button class="btn-qr" onclick="printQR(${idx})" title="QR 라벨 인쇄">
                        🏷️ QR
                    </button>
                </td>
            </tr>
        `).join('');
    }

    function escapeHtml(str) {
        if (!str) return '';
        return str.replace(/[&<>"']/g, m => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[m]));
    }

    function loadSalesData() {
        const period = document.getElementById('periodSelect').value;
        const search = document.getElementById('searchInput').value;
        const barcodeFilter = document.getElementById('barcodeFilter').value;

        document.getElementById('salesTableBody').innerHTML = 
            '<tr><td colspan="7" class="loading">로딩 중...</td></tr>';

        fetch(`/api/sales-detail?days=${period}&search=${encodeURIComponent(search)}&barcode=${barcodeFilter}`)
            .then(res => res.json())
            .then(data => {
                if (data.success) {
                    salesData = data.items;
                    
                    // 통계 업데이트
                    document.getElementById('statTotal').textContent = data.stats.total_count.toLocaleString();
                    document.getElementById('statAmount').textContent = formatPrice(data.stats.total_amount);
                    document.getElementById('statBarcode').textContent = data.stats.barcode_rate + '%';
                    document.getElementById('statProducts').textContent = data.stats.unique_products.toLocaleString();
                    document.getElementById('tableCount').textContent = `${salesData.length}건`;
                    
                    renderTable();
                } else {
                    document.getElementById('salesTableBody').innerHTML = 
                        `<tr><td colspan="7" class="empty-state">오류: ${data.error}</td></tr>`;
                }
            })
            .catch(err => {
                document.getElementById('salesTableBody').innerHTML = 
                    `<tr><td colspan="7" class="empty-state">데이터 로드 실패</td></tr>`;
            });
    }

    // QR 인쇄 관련
    let selectedItem = null;
    let printQty = 1;
    const MAX_QTY = 10;
    const MIN_QTY = 1;

    function adjustQty(delta) {
        printQty = Math.max(MIN_QTY, Math.min(MAX_QTY, printQty + delta));
        updateQtyUI();
    }

    function updateQtyUI() {
        document.getElementById('qtyValue').textContent = printQty;
        document.getElementById('qtyMinus').disabled = printQty <= MIN_QTY;
        document.getElementById('qtyPlus').disabled = printQty >= MAX_QTY;
        
        const btn = document.getElementById('printBtn');
        btn.textContent = printQty > 1 ? `${printQty}장 인쇄` : '인쇄';
    }

    function printQR(idx) {
        selectedItem = salesData[idx];
        printQty = 1;
        
        // 미리보기 요청
        const modal = document.getElementById('qrModal');
        const preview = document.getElementById('qrPreview');
        const info = document.getElementById('qrInfo');
        
        preview.innerHTML = '<p style="color:#64748b;">미리보기 로딩 중...</p>';
        info.innerHTML = `
            <strong>${escapeHtml(selectedItem.product_name)}</strong><br>
            <span style="color:#64748b;font-size:13px;">
                바코드: ${selectedItem.barcode || selectedItem.drug_code || 'N/A'}<br>
                가격: ${formatPrice(selectedItem.unit_price)}
            </span>
        `;
        updateQtyUI();
        modal.classList.add('active');
        
        // 미리보기 이미지 로드
        fetch('/api/qr-preview', {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify({
                drug_name: selectedItem.product_name,
                barcode: selectedItem.barcode || '',
                drug_code: selectedItem.drug_code || '',
                sale_price: selectedItem.unit_price || 0
            })
        })
        .then(res => res.json())
        .then(data => {
            if (data.success && data.image) {
                preview.innerHTML = `<img src="${data.image}" alt="QR 미리보기">`;
            } else {
                preview.innerHTML = '<p style="color:#ef4444;">미리보기 실패</p>';
            }
        })
        .catch(err => {
            preview.innerHTML = '<p style="color:#ef4444;">미리보기 오류</p>';
        });
    }

    function closeQRModal() {
        document.getElementById('qrModal').classList.remove('active');
        selectedItem = null;
        printQty = 1;
    }

    async function confirmPrintQR() {
        if (!selectedItem) return;
        
        const btn = document.getElementById('printBtn');
        const totalQty = printQty;
        btn.disabled = true;
        
        let successCount = 0;
        let errorMsg = '';
        
        for (let i = 0; i < totalQty; i++) {
            btn.textContent = `인쇄 중... (${i + 1}/${totalQty})`;
            
            try {
                const res = await fetch('/api/qr-print', {
                    method: 'POST',
                    headers: {'Content-Type': 'application/json'},
                    body: JSON.stringify({
                        drug_name: selectedItem.product_name,
                        barcode: selectedItem.barcode || '',
                        drug_code: selectedItem.drug_code || '',
                        sale_price: selectedItem.unit_price || 0
                    })
                });
                const data = await res.json();
                
                if (data.success) {
                    successCount++;
                } else {
                    errorMsg = data.error || '알 수 없는 오류';
                    break;
                }
                
                // 연속 인쇄 시 약간의 딜레이
                if (i < totalQty - 1) {
                    await new Promise(r => setTimeout(r, 500));
                }
            } catch (err) {
                errorMsg = err.message;
                break;
            }
        }
        
        btn.disabled = false;
        updateQtyUI();
        
        if (successCount === totalQty) {
            alert(`✅ QR 라벨 ${totalQty}장 인쇄 완료!`);
            closeQRModal();
        } else if (successCount > 0) {
            alert(`⚠️ ${successCount}/${totalQty}장 인쇄 완료\n오류: ${errorMsg}`);
        } else {
            alert(`❌ 인쇄 실패: ${errorMsg}`);
        }
    }

    // 초기 로드
    loadSalesData();
    </script>

    <!-- QR 인쇄 모달 -->
    <div class="modal-overlay" id="qrModal" onclick="if(event.target===this)closeQRModal()">
        <div class="modal-box">
            <div class="modal-title">🏷️ QR 라벨 인쇄</div>
            <div id="qrInfo" style="margin-bottom:12px;"></div>
            <div class="modal-preview" id="qrPreview">
                <p style="color:#64748b;">미리보기 로딩 중...</p>
            </div>
            <div class="qty-label">인쇄 매수</div>
            <div class="qty-selector">
                <button class="qty-btn" onclick="adjustQty(-1)" id="qtyMinus">−</button>
                <div class="qty-value" id="qtyValue">1</div>
                <button class="qty-btn" onclick="adjustQty(1)" id="qtyPlus">+</button>
            </div>
            <div class="modal-btns">
                <button class="modal-btn cancel" onclick="closeQRModal()">취소</button>
                <button class="modal-btn confirm" onclick="confirmPrintQR()" id="printBtn">인쇄</button>
            </div>
        </div>
    </div>
</body>
</html>
