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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>FraudShield AI | Transaction Monitoring</title>
    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap" rel="stylesheet">
</head>
<body>
    <div class="container">
        <header>
            <h1>FraudShield AI</h1>
            <p>Advanced Real-time Credit Card Fraud Detection Pipeline</p>
        </header>

        <div class="main-layout">
            <div class="card">
                <div class="card-title">
                    <span>🔍</span> Sample Transactions
                </div>
                <div class="tabs">
                    <div class="tab active" id="tab-fraud">Fraud Cases</div>
                    <div class="tab" id="tab-normal">Legitimate</div>
                </div>
                <div class="samples-list" id="samples-container">
                    <!-- Samples will be injected here -->
                    <p style="text-align: center; color: #64748b;">Loading samples...</p>
                </div>
            </div>

            <div class="card">
                <div class="card-title">
                    <span>⚙️</span> Analysis Engine
                </div>
                <form id="prediction-form">
                    <div class="form-group">
                        <div>
                            <label style="font-size: 0.8rem; color: #94a3b8;">Amount ($)</label>
                            <input type="number" id="Amount" class="input-field" step="0.01" required placeholder="89.99">
                        </div>
                        <div>
                            <label style="font-size: 0.8rem; color: #94a3b8;">Time (Seconds)</label>
                            <input type="number" id="Time" class="input-field" required placeholder="0">
                        </div>
                    </div>
                    
                    <div style="margin-bottom: 0.5rem; font-size: 0.8rem; color: #94a3b8;">PCA Components (V1 - V28)</div>
                    <div style="max-height: 200px; overflow-y: auto; padding-right: 5px;" id="v-inputs">
                        <!-- V1 to V28 inputs will be injected -->
                    </div>

                    <button type="submit" class="btn">Analyze Transaction</button>
                </form>

                <div id="result-area">
                    <div class="result-title" id="res-title">SAFE</div>
                    <div class="result-conf" id="res-conf">Confidence: 99.8%</div>
                </div>
            </div>
        </div>
    </div>

    <script>

        let samples = { fraud: [], normal: [] };

        let activeTab = 'fraud';



        // Initialize V inputs

        const vContainer = document.getElementById('v-inputs');

        for (let i = 1; i <= 28; i++) {

            const div = document.createElement('div');

            div.className = 'form-group';

            div.style.marginBottom = '0.5rem';

            div.innerHTML = `

                <div style="grid-column: span 2">

                    <input type="number" step="0.000001" id="V${i}" class="input-field" placeholder="V${i} component" value="0">

                </div>

            `;

            vContainer.appendChild(div);

        }



        // Fetch samples

        fetch('/get_samples')

            .then(res => res.json())

            .then(data => {

                samples = data;

                renderSamples();

            });



        function renderSamples() {

            const container = document.getElementById('samples-container');

            container.innerHTML = '';

            

            const list = activeTab === 'fraud' ? samples.fraud : samples.normal;

            

            list.forEach(item => {

                const el = document.createElement('div');

                el.className = 'sample-item';

                el.innerHTML = `

                    <div class="amount">$${item.Amount.toFixed(2)}</div>

                    <div class="meta">

                        <span>Time: ${Math.floor(item.Time)}s</span>

                        <span>PCA: Mixed</span>

                    </div>

                `;

                el.onclick = () => fillForm(item);

                container.appendChild(el);

            });

        }



        function fillForm(item) {

            document.getElementById('Amount').value = item.Amount;

            document.getElementById('Time').value = item.Time;

            for (let i = 1; i <= 28; i++) {

                document.getElementById(`V${i}`).value = item[`V${i}`];

            }

            // Trigger animation

            const card = document.querySelectorAll('.card')[1];

            card.style.borderColor = 'var(--primary)';

            setTimeout(() => card.style.borderColor = 'var(--glass-border)', 500);

        }



        // Tabs

        document.getElementById('tab-fraud').onclick = () => {

            activeTab = 'fraud';

            document.getElementById('tab-fraud').classList.add('active');

            document.getElementById('tab-normal').classList.remove('active');

            renderSamples();

        };

        document.getElementById('tab-normal').onclick = () => {

            activeTab = 'normal';

            document.getElementById('tab-normal').classList.add('active');

            document.getElementById('tab-fraud').classList.remove('active');

            renderSamples();

        };



        // Form Submit

        document.getElementById('prediction-form').onsubmit = async (e) => {

            e.preventDefault();

            const btn = e.target.querySelector('button');

            btn.innerHTML = 'Processing...';

            btn.disabled = true;



            const data = {

                Amount: document.getElementById('Amount').value,

                Time: document.getElementById('Time').value

            };

            for (let i = 1; i <= 28; i++) {

                data[`V${i}`] = document.getElementById(`V${i}`).value;

            }



            try {

                const res = await fetch('/predict', {

                    method: 'POST',

                    headers: { 'Content-Type': 'application/json' },

                    body: JSON.stringify(data)

                });

                const result = await res.json();

                

                const resArea = document.getElementById('result-area');

                resArea.style.display = 'block';

                resArea.className = result.is_fraud ? 'result-fraud' : 'result-safe';

                

                document.getElementById('res-title').innerText = result.class;

                document.getElementById('res-conf').innerText = `Confidence: ${result.confidence.toFixed(2)}%`;



            } catch (err) {

                alert('Analysis failed: ' + err.message);

            } finally {

                btn.innerHTML = 'Analyze Transaction';

                btn.disabled = false;

            }

        };

    </script>
</body>
</html>