<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Financial Dashboard</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.0/font/bootstrap-icons.css">
    <style>
        :root {
            --header-bg: #4a5568;
            --text-up: #28a745;
            --text-down: #dc3545;
        }

        body { 
            background-color: #f4f7f6; 
            font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto; 
            margin: 0;
            padding: 10px;
        }

        .card { 
            border: none; 
            border-radius: 12px; 
            box-shadow: 0 4px 15px rgba(0,0,0,0.1); 
            overflow: hidden;
        }

        .card-header {
            background-color: white !important;
            border-bottom: 1px solid #eee;
            padding: 15px;
        }

        /* Zebra Striping Logic */
        .table-striped tbody tr:nth-of-type(odd) {
            background-color: rgba(0, 0, 0, 0.03);
        }

        /* Sticky Column for Mobile Scrolling */
        .table-responsive { border-radius: 8px; }
        
        .table thead th {
            background-color: var(--header-bg) !important;
            color: white !important;
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            text-align: center;
            white-space: nowrap;
            padding: 12px 8px;
            border: none;
        }

        .table td {
            text-align: center;
            vertical-align: middle;
            font-size: 0.85rem;
            white-space: nowrap;
            border-color: #f1f1f1;
        }

        /* Keep Instrument Name fixed on the left while swiping */
        .table td:first-child, .table th:first-child {
            position: sticky;
            left: 0;
            z-index: 10;
            text-align: left;
            min-width: 140px;
            background-color: white;
            font-weight: 700;
        }

        /* Ensure zebra stripe works on sticky column */
        .table-striped tbody tr:nth-of-type(odd) td:first-child {
            background-color: #f9f9f9;
        }

        /* Custom UI Elements */
        .btn-refresh {
            background-color: #0d6efd;
            color: white !important;
            font-weight: 600;
            border-radius: 6px;
            padding: 6px 16px;
            transition: 0.2s;
        }

        .text-up { color: var(--text-up); font-weight: 600; }
        .text-down { color: var(--text-down); font-weight: 600; }
        
        .badge-kd { 
            background-color: #6c757d; 
            font-size: 0.75rem; 
            padding: 5px 8px; 
        }

        #loading { display: none; margin-left: 10px; font-size: 0.8rem; color: #666; }
        /* 1. Ensure the 52W column is wide enough for the progress bar */
        .table td:nth-child(4), .table th:nth-child(4) {
            min-width: 140px; 
            text-align: left;
        }

        /* 2. Narrow the EMA and K/D columns since they only have small numbers */
        .table td:nth-child(n+5), .table th:nth-child(n+5) {
            min-width: 75px;
        }

        /* 3. Give the Instrument column a bit more breathing room if names are long */
        .table td:first-child, .table th:first-child {
            min-width: 180px; /* Increased from 140px */
}
    </style>
</head>
<body>

<div class="container-fluid p-0">
    <div class="card">
        <div class="card-header d-flex justify-content-between align-items-center">
            <h5 class="mb-0 text-dark">Portfolio Signals</h5>
            <div class="d-flex align-items-center gap-2">
                <span id="loading" class="me-2" style="display:none;">Updating...</span>
                
                <button class="btn btn-outline-secondary btn-sm" onclick="loadData()">
                    <i class="bi bi-arrow-clockwise"></i> Refresh Table
                </button>
                
                <button id="syncBtn" class="btn btn-primary btn-sm" onclick="runGlobalSync()">
                    <i class="bi bi-cloud-download"></i> Sync New Data
                </button>
            </div>
        </div>
        <div class="card-body p-0">
            <div class="table-responsive">
                <table class="table table-hover table-striped mb-0">
                    <thead>
                        <tr>
                            <th style="width: 25%;">Instrument</th>
                            <th style="width: 10%;">Close</th>
                            <th style="width: 10%;">Chg%</th>
                            <th style="width: 10%;">52W Range</th> <th style="width: 8%;">20 EMA</th>
                            <th style="width: 10%;">50 EMA</th>
                            <th style="width: 10%;">100 EMA</th>
                            <th style="width: 10%;">200 EMA</th>
                            <th style="width: 5%;">K/D</th>
                        </tr>
                    </thead>
                    <tbody id="tableBody">
                        <tr><td colspan="9" class="p-4">Initializing data engine...</td></tr>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</div>
<script>
    console.log("Script block loaded successfully.");

    // --- 1. Helper Function for K/D Styling ---
    // Defined at the top level so it's ready before loadData runs
    function formatKD(val) {
        if (!val || val === "N/A" || !val.includes('/')) return `<span class="text-muted">N/A</span>`;
        
        const [k, d] = val.split('/').map(v => parseFloat(v));
        
        let colorClass = 'text-dark'; // Default
        if (k >= 80) colorClass = 'text-danger fw-bold';      // Overbought
        else if (k <= 20) colorClass = 'text-success fw-bold'; // Oversold
        
        return `<span class="${colorClass}">${val}</span>`;
    }

    // --- 2. Load Table Data (Fast) ---
    async function loadData() {
        console.log("Starting loadData...");
        const loading = document.getElementById('loading');
        const tbody = document.getElementById('tableBody');
        
        if (loading) loading.style.display = 'inline';
        
        try {
            const response = await fetch('/api/summary');
            const data = await response.json();
            
            tbody.innerHTML = '';

            if (!data || data.length === 0) {
                tbody.innerHTML = '<tr><td colspan="9" class="p-4">No data found. Please run Sync.</td></tr>';
                return;
            }

        data.forEach(item => {
            // 1. GATEKEEPER: Check if the item has an error or is missing data
            if (item.error || !item.last_close) {
                const errorRow = `
                    <tr>
                        <td>${item.symbol || 'Unknown'}</td>
                        <td colspan="8" class="text-center p-3">
                            <span class="badge bg-warning text-dark">
                                <i class="bi bi-exclamation-triangle"></i> Needs Sync
                            </span>
                            <small class="text-muted ms-2">Local CSV not found or corrupted.</small>
                        </td>
                    </tr>
                `;
                tbody.innerHTML += errorRow;
                return; // This skips the rest of the math and goes to the next fund
            }

            // --- A. Helper for EMA colors (Your existing code) ---
            const formatEma = (val) => {
                if (val === "N/A" || val === null || val === undefined) return `<span class="text-muted">N/A</span>`;
                const num = parseFloat(val);
                const sign = num > 0 ? "+" : "";
                const colorClass = num >= 0 ? 'text-up' : 'text-down';
                return `<span class="${colorClass}">${sign}${num.toFixed(1)}%</span>`;
            };

            // --- B. Calculate 52W Range logic ---
            const current = parseFloat(item.last_close) || 0;
            const low = parseFloat(item.low_52) || 0;
            const high = parseFloat(item.high_52) || 0;
            
            let rangePct = 0;
            if (high > low) {
                rangePct = ((current - low) / (high - low)) * 100;
                rangePct = Math.min(Math.max(rangePct, 0), 100);
            }

            const rangeColor = rangePct > 80 ? 'text-danger' : (rangePct < 20 ? 'text-success' : 'text-muted');

            // --- C. Build the Row (Your existing code) ---
            const row = `
                <tr>
                    <td>${item.symbol}</td>
                    <td class="fw-bold">${item.last_close}</td>
                    <td class="${item.change_pct >= 0 ? 'text-up' : 'text-down'}">
                        ${item.change_pct >= 0 ? '+' : ''}${item.change_pct}%
                    </td>
                    <td class="${rangeColor} small">
                        <div class="d-flex justify-content-between mb-1" style="min-width: 100px;">
                            <span>${item.low_52}</span>
                            <span>${item.high_52}</span>
                        </div>
                        <div class="progress" style="height: 5px;">
                            <div class="progress-bar bg-primary" style="width: ${rangePct}%"></div>
                        </div>
                    </td>
                    <td>${formatEma(item.last_ema20)}</td>
                    <td>${formatEma(item.last_ema50)}</td>
                    <td>${formatEma(item.last_ema100)}</td>
                    <td>${formatEma(item.last_ema200)}</td>
                    <td>${formatKD(item.kd_values)}</td>
                </tr>
            `;
            tbody.innerHTML += row;
        });    
        } catch (error) {
            console.error("Fetch error:", error);
            tbody.innerHTML = '<tr><td colspan="9" class="text-danger p-4">Error loading local data. Check Console.</td></tr>';
        } finally {
            if (loading) loading.style.display = 'none';
        }
    }

    // --- 3. Run Global Sync (Slow) ---
    async function runGlobalSync() {
        const syncBtn = document.getElementById('syncBtn');
        const loading = document.getElementById('loading');
        
        if (!syncBtn) return;

        syncBtn.disabled = true;
        const originalText = syncBtn.innerHTML;
        syncBtn.innerHTML = `<span class="spinner-border spinner-border-sm"></span> Syncing...`;
        if (loading) loading.style.display = 'inline';

        try {
            const response = await fetch('/api/sync', { method: 'POST' });
            if (!response.ok) throw new Error("Server error during sync");
            
            await loadData(); // Reload table after sync
            alert("Sync Complete! Data updated.");
        } catch (error) {
            console.error("Sync error:", error);
            alert("Sync failed. Check terminal for Python errors.");
        } finally {
            syncBtn.disabled = false;
            syncBtn.innerHTML = originalText;
            if (loading) loading.style.display = 'none';
        }
    }

    // --- 4. Initial Trigger ---
    window.onload = function() {
        loadData();
    };
    scales: {
    y: {
        ticks: {
            callback: function(value) {
                return '$' + value.toLocaleString();
            }
        }
    }
}
const vaROI = ((last.va_value - last.va_invested) / last.va_invested * 100).toFixed(2);
const dcaROI = ((last.dca_value - last.dca_invested) / last.dca_invested * 100).toFixed(2);

summaryText.innerHTML = `
    <div class="row text-center">
        <div class="col"><strong>VA ROI:</strong> ${vaROI}%</div>
        <div class="col"><strong>DCA ROI:</strong> ${dcaROI}%</div>
    </div>
`;
</script>

</body>
</html>