// Global Variables
let debounceTimer;

// --- INITIALIZATION ---
document.addEventListener('DOMContentLoaded', () => {
    const accessKey = sessionStorage.getItem('accessKey');
    if (!accessKey) {
        window.location.href = '/';
        return;
    }

    // Clear key on refresh or tab close
    window.addEventListener('beforeunload', () => {
        sessionStorage.removeItem('accessKey');
    });

    // Expandable Cards Logic
    document.addEventListener('click', (e) => {
        const card = e.target.closest('.expandable-card');
        if (card) {
            // Close others (optional accordion style) or just toggle this one:
            card.classList.toggle('expanded');
        }
    });

    // Mouse Glow Tracking
    document.addEventListener("mousemove", (e) => {
        document.querySelectorAll(".mouse-glow, .glass-panel, .expandable-card").forEach((el) => {
            const rect = el.getBoundingClientRect();
            el.style.setProperty("--mouse-x", `${e.clientX - rect.left}px`);
            el.style.setProperty("--mouse-y", `${e.clientY - rect.top}px`);
            el.classList.add("mouse-glow"); // dynamically attach glow class if not present
        });
    });

    initGSAPAnimations();
    initMarketTicker();
    // Initialize Vanta Background
    initVantaBackground();
    
    const riskSlider = document.getElementById('risk');
    const riskVal = document.getElementById('riskVal');
    if (riskSlider && riskVal) {
        riskSlider.addEventListener('input', (e) => {
            riskVal.textContent = e.target.value;
            // GSAP tactical feedback animation
            gsap.fromTo(riskVal, 
                { scale: 1.5, color: '#3b82f6', textShadow: '0 0 20px #3b82f6' }, 
                { scale: 1, color: '#f8fafc', textShadow: 'none', duration: 0.4, ease: "back.out(1.7)" }
            );
        });
    }

    // Attach preview listeners ONLY to explicit change events, not typing/sliding
    const inputs = document.querySelectorAll('#portfolioForm input, #portfolioForm select');
    inputs.forEach(input => {
        // Removed the 'input' event listener to disable live auto-updating
    });

    // Removed explicit Preview Button since live panel is deleted

    // Suite Tabs logic
    document.querySelectorAll('.suite-tab').forEach(tab => {
        tab.addEventListener('click', (e) => {
            document.querySelectorAll('.suite-tab').forEach(t => t.classList.remove('active'));
            e.target.classList.add('active');
            // Currently all tabs just show the "View Comprehensive Report" button
        });
    });

    // Main Form Submit (Full Report)
    const form = document.getElementById('portfolioForm');
    if (form) {
        form.addEventListener('submit', async (e) => {
            e.preventDefault();
            await generateFullReport();
        });
    }

    // Router History Listener
    window.addEventListener('popstate', (e) => {
        if (e.state && e.state.viewId) {
            switchView(e.state.viewId, false);
        } else {
            // Handle hash fallback or default home
            const hash = window.location.hash.replace('#', '');
            if (hash) {
                switchView(hash, false);
            } else {
                switchView('hero', false);
            }
        }
    });

    // Check initial hash
    const initialHash = window.location.hash.replace('#', '');
    if (initialHash) {
        switchView(initialHash, false);
    }
});

// --- NAVIGATION ROUTER ---
window.switchView = function(viewId, pushHistory = true) {
    document.querySelectorAll('.view-section').forEach(el => {
        el.classList.remove('active');
        el.style.opacity = 0;
    });
    document.querySelectorAll('.nav-link').forEach(el => el.classList.remove('active'));
    
    const targetView = document.getElementById('view-' + viewId);
    if(targetView) {
        targetView.classList.add('active');
        // Elegant GSAP fade in
        if (window.gsap) {
            gsap.fromTo(targetView, 
                { opacity: 0, y: 30 }, 
                { opacity: 1, y: 0, duration: 0.6, ease: "power2.out" }
            );
        } else {
            targetView.style.opacity = 1;
        }
    }
    
    const link = document.querySelector(`.nav-link[data-target="${viewId}"]`);
    if(link) link.classList.add('active');

    if (pushHistory) {
        window.history.pushState({ viewId: viewId }, '', '#' + viewId);
    }
};

// --- GSAP ANIMATIONS ---
function initGSAPAnimations() {
    if (typeof gsap === 'undefined') return;
    
    gsap.registerPlugin(ScrollTrigger);

    // Staggered entry for Model Zoo Cards
    document.querySelectorAll('.zoo-grid').forEach(grid => {
        const cards = grid.querySelectorAll('.expandable-card');
        if (cards.length === 0) return;
        
        gsap.fromTo(cards, 
            { opacity: 0, y: 50 },
            { 
                opacity: 1, 
                y: 0, 
                duration: 0.8, 
                stagger: 0.15, 
                ease: "power3.out",
                scrollTrigger: {
                    trigger: grid,
                    start: "top 85%"
                }
            }
        );
    });
}

// --- MARKET TICKER ---
async function initMarketTicker() {
    try {
        const res = await fetch('/api/market_ticker');
        const data = await res.json();
        const container = document.getElementById('liveTickerContent');
        if(data && data.length > 0) {
            let html = '';
            // Duplicate array for seamless infinite scrolling
            const displayData = [...data, ...data, ...data];
            displayData.forEach(item => {
                const colorClass = item.change >= 0 ? 'ticker-positive' : 'ticker-negative';
                const sign = item.change > 0 ? '+' : '';
                html += `<div class="ticker-item">
                            <strong>${item.name}</strong> 
                            <span>${item.price.toLocaleString()}</span>
                            <span class="${colorClass}">${sign}${item.change}%</span>
                         </div>`;
            });
            container.innerHTML = html;
        } else {
            container.innerHTML = "<span>Market data unavailable</span>";
        }
    } catch(e) {
        console.error("Ticker fetch failed:", e);
    }
}

// --- PAYLOAD GENERATOR ---
function getPayload() {
    let custom_constraints = [];
    const advInput = document.getElementById('custom_constraints_input');
    if (advInput && advInput.value.trim() !== '') {
        const lines = advInput.value.split('\n');
        lines.forEach(line => {
            const parts = line.split(',').map(p => p.trim());
            if (parts.length === 3) {
                let asset = parts[0];
                let direction = parts[1].toLowerCase();
                let limit = parseFloat(parts[2]);
                if (!isNaN(limit)) {
                    custom_constraints.push({
                        asset: asset,
                        direction: direction,
                        limit: limit / 100.0
                    });
                }
            }
        });
    }

    return {
        tickers: document.getElementById('tickers').value.split(',').map(t => t.trim()).filter(t => t),
        capital: parseFloat(document.getElementById('capital').value) || 100000,
        risk_input: parseInt(document.getElementById('risk').value),
        model: parseInt(document.getElementById('model').value),
        allocation_engine: parseInt(document.getElementById('allocation_engine').value),
        allow_shorting: document.getElementById('allow_shorting').checked,
        tax_enabled: document.getElementById('tax_enabled').checked,
        garch_enabled: document.getElementById('garch_enabled').checked,
        custom_constraints: custom_constraints
    };
}

// --- HERO RADAR CHART ---
function initHeroRadar() {
    const ctx = document.getElementById('heroRadarChart');
    if (!ctx) return;
    
    const data = {
        labels: ['Value', 'Momentum', 'Quality', 'Low Volatility', 'Yield'],
        datasets: [{
            label: 'Current Regime Exposure',
            data: [65, 85, 40, 70, 50],
            backgroundColor: 'rgba(96, 165, 250, 0.2)',
            borderColor: 'rgba(96, 165, 250, 1)',
            pointBackgroundColor: 'rgba(96, 165, 250, 1)',
            pointBorderColor: '#fff',
            pointHoverBackgroundColor: '#fff',
            pointHoverBorderColor: 'rgba(96, 165, 250, 1)'
        }]
    };

    const config = {
        type: 'radar',
        data: data,
        options: {
            responsive: true,
            maintainAspectRatio: false,
            scales: {
                r: {
                    angleLines: { color: 'rgba(255, 255, 255, 0.1)' },
                    grid: { color: 'rgba(255, 255, 255, 0.1)' },
                    pointLabels: { color: '#94a3b8', font: { size: 11, family: 'Inter' } },
                    ticks: { display: false, max: 100, min: 0 }
                }
            },
            plugins: {
                legend: { display: false }
            }
        }
    };
    
    const chart = new Chart(ctx, config);
    
    // Simulate dynamic factor shifting
    setInterval(() => {
        chart.data.datasets[0].data = chart.data.datasets[0].data.map(val => {
            let shift = (Math.random() - 0.5) * 15;
            return Math.max(10, Math.min(100, val + shift));
        });
        chart.update('active');
    }, 3000);
}



// --- FULL REPORT GENERATION ---
async function generateFullReport() {
    const payload = getPayload();
    const accessKey = sessionStorage.getItem('accessKey') || "";
    
    // Trigger Cinematic Matrix Loader
    const matrixLoader = document.getElementById('matrix-loader');
    const matrixLogs = document.getElementById('matrix-logs');
    const matrixProgress = document.getElementById('matrix-progress');
    const matrixProgressText = document.getElementById('matrix-progress-text');
    
    matrixLoader.style.display = 'flex';
    matrixLogs.innerHTML = '';
    matrixProgress.style.width = '0%';
    
    const steps = [
        "Initializing quantitative core engine...",
        "Fetching multi-asset historical data from market sources...",
        "Computing eigen-decomposition of the covariance matrix...",
        "Executing probabilistic stress tests and factor attribution...",
        "Applying dynamic constraint sets (allocation, sector, limits)...",
        "Identifying market volatility regimes...",
        "Converging convex optimization solver...",
        "Compiling institutional HTML portfolio report..."
    ];
    
    let logIdx = 0;
    const interval = setInterval(() => {
        if(logIdx < steps.length) {
            const el = document.createElement('div');
            el.style.margin = "2px 0";
            el.innerHTML = `<span style="color: #3b82f6">></span> ${steps[logIdx]}`;
            matrixLogs.appendChild(el);
            
            // Auto scroll to bottom
            matrixLogs.scrollTop = matrixLogs.scrollHeight;
            
            // Progress bar (capping at 99% until fully complete)
            let pct = Math.floor(Math.min(((logIdx + 1) / steps.length) * 99, 99));
            matrixProgress.style.width = `${pct}%`;
            if(matrixProgressText) matrixProgressText.innerText = `${pct}%`;
            logIdx++;
        }
    }, 600); // Fast cinematic log streaming

    try {
        const res = await fetch('/api/generate', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-Access-Key': accessKey
            },
            body: JSON.stringify(payload)
        });

        if (!res.ok) {
            clearInterval(interval);
            let errTxt = "Generation Failed";
            try {
                const errData = await res.json();
                errTxt = errData.detail || errTxt;
            } catch (e) {}
            matrixLogs.innerHTML += `<div style="color: #ef4444; margin-top: 1rem;">> ERROR: ${errTxt}</div>`;
            setTimeout(() => { matrixLoader.style.display = 'none'; }, 4000);
            return;
        }

        const data = await res.json();
        if (data.status !== "queued") {
            clearInterval(interval);
            matrixLogs.innerHTML += `<div style="color: #ef4444; margin-top: 1rem;">> Unexpected server response.</div>`;
            setTimeout(() => { matrixLoader.style.display = 'none'; }, 3000);
            return;
        }

        const taskId = data.task_id;
        matrixLogs.innerHTML += `<div style="color: #60a5fa; margin-top: 1rem;">> Job ${taskId.substring(0,8)} queued. Polling compute engine...</div>`;

        const pollInterval = setInterval(async () => {
            try {
                const statusRes = await fetch(`/api/status/${taskId}`, {
                    headers: { 'X-Access-Key': accessKey }
                });
                
                if (!statusRes.ok) {
                    clearInterval(pollInterval);
                    clearInterval(interval);
                    matrixLogs.innerHTML += `<div style="color: #ef4444;">> Polling failed.</div>`;
                    setTimeout(() => { matrixLoader.style.display = 'none'; }, 3000);
                    return;
                }
                
                const statusData = await statusRes.json();
                if (statusData.status === "completed") {
                    clearInterval(pollInterval);
                    clearInterval(interval);
                    matrixProgress.style.width = '100%';
                    if(matrixProgressText) matrixProgressText.innerText = '100%';
                    if (statusData.target_weights) {
                        sessionStorage.setItem("portfolio_context", JSON.stringify(statusData.target_weights));
                    }
                    matrixLogs.innerHTML += `<div style="color: #10b981; margin-top: 1rem; font-weight: bold;">> OPTIMIZATION COMPLETE. REDIRECTING...</div>`;
                    setTimeout(() => {
                        matrixLoader.style.display = 'none';
                        window.openReportFrame();
                    }, 1500);
                } else if (statusData.status === "error") {
                    clearInterval(pollInterval);
                    clearInterval(interval);
                    matrixLogs.innerHTML += `<div style="color: #ef4444; margin-top: 1rem;">> CRITICAL ERROR: ${statusData.message}</div>`;
                    setTimeout(() => { matrixLoader.style.display = 'none'; }, 4000);
                }
            } catch (err) {
                // Ignore network blips during polling
            }
        }, 2000);

    } catch(err) {
        clearInterval(interval);
        matrixLogs.innerHTML += `<div style="color: #ef4444; margin-top: 1rem;">> CRITICAL ERROR: Network failure.</div>`;
        setTimeout(() => { matrixLoader.style.display = 'none'; }, 4000);
    }
}


// --- WIZARD LOGIC ---
window.nextWizardStep = function(step) {
    document.querySelectorAll('.wizard-step').forEach(el => el.style.display = 'none');
    const target = document.getElementById('wizardStep' + step);
    if(target) {
        target.style.display = 'block';
    }
};

window.runWizard = async function() {
    const macro = document.getElementById('wizardMacro').value;
    const reaction = document.getElementById('wizardReaction').value;
    const basket = document.getElementById('wizardBasket').value;
    
    // Auto-fill the Sandbox form under the hood
    document.getElementById('tickers').value = basket;
    
    let risk = 5;
    if (reaction === 'buy') risk = 2;
    if (reaction === 'hold') risk = 5;
    if (reaction === 'sell') risk = 8;
    
    document.getElementById('risk').value = risk;
    document.getElementById('riskVal').textContent = risk;
    
    let model = 5; // XGBoost default
    if (macro === 'growth') model = 4; // Fama-French
    if (macro === 'recession') model = 7; // HMM
    if (macro === 'inflation') model = 3; // Bayesian Shrinkage
    
    document.getElementById('model').value = model.toString();
    
    // Switch to Sandbox view
    const modal = document.getElementById('wizardOverlay');
    if(modal) modal.style.display = 'none';
    
    switchView('sandbox');
    
    // Trigger the full report generation automatically
    await generateFullReport();
};

// --- VANTA JS BACKGROUND ---
function initVantaBackground() {
    const container = document.getElementById('vanta-bg');
    if (!container) return;
    
    try {
        window.vantaEffect = VANTA.NET({
            el: "#vanta-bg",
            mouseControls: true,
            touchControls: true,
            gyroControls: false,
            minHeight: 200.00,
            minWidth: 200.00,
            scale: 1.00,
            scaleMobile: 1.00,
            color: 0x3b82f6,
            backgroundColor: 0x050814,
            points: 12.00,
            maxDistance: 22.00,
            spacing: 16.00
        });
        
        // Ensure Vanta resizes correctly on window resize
        window.addEventListener('resize', () => {
            if (window.vantaEffect) {
                window.vantaEffect.resize();
            }
        });
    } catch (e) {
        console.warn("Vanta JS failed to initialize:", e);
    }
}

// --- REPORT FRAME LOGIC ---
window.openReportFrame = async function() {
    const reportContainer = document.getElementById('reportContainer');
    const reportView = document.getElementById('report-view');
    
    // Check if report actually exists before opening iframe
    try {
        const checkRes = await fetch('/report');
        if (!checkRes.ok) {
            alert("Report generation failed or returned a blank response. Check server logs.");
            return;
        }
    } catch(e) {
        alert("Error fetching report.");
        return;
    }
    
    document.querySelector('.main-content').style.display = 'none';
    document.querySelector('nav').style.display = 'none';
    document.querySelector('.market-ticker-bar').style.display = 'none';
    
    reportContainer.style.display = 'block';
    reportView.src = '/report?t=' + new Date().getTime();
};

window.closeReport = function() {
    document.getElementById('reportContainer').style.display = 'none';
    document.querySelector('.main-content').style.display = 'block';
    document.querySelector('nav').style.display = 'flex';
    document.querySelector('.market-ticker-bar').style.display = 'flex';
};

// Ambient Background relies entirely on Vanta JS now.

// --- AUTHENTICATION FLOW ---
window.logout = function() {
    sessionStorage.removeItem('accessKey');
    window.location.href = '/';
};

// --- AI CHAT WIDGET LOGIC ---
document.addEventListener('DOMContentLoaded', () => {
    // Clear stale optimization context on fresh page load so the AI doesn't hallucinate previous sessions
    sessionStorage.removeItem("portfolio_context");

    // Pre-populate some assets to make the UI look aliveviously orphaned
    if (typeof initHeroRadar === 'function') {
        initHeroRadar();
    }

    const chatToggleBtn = document.getElementById('chat-toggle-btn');
    const chatWindow = document.getElementById('chat-window');
    const chatCloseBtn = document.getElementById('chat-close-btn');
    const chatForm = document.getElementById('chat-form');
    const chatInput = document.getElementById('chat-input');
    const chatMessages = document.getElementById('chat-messages');

    // Maintain conversation history locally
    let chatHistory = [];

    if (chatToggleBtn && chatWindow) {
        chatToggleBtn.addEventListener('click', () => {
            chatWindow.style.display = 'flex';
            chatToggleBtn.style.transform = 'scale(0)';
        });

        chatCloseBtn.addEventListener('click', () => {
            chatWindow.style.display = 'none';
            chatToggleBtn.style.transform = 'scale(1)';
        });

        chatForm.addEventListener('submit', async (e) => {
            e.preventDefault();
            const msg = chatInput.value.trim();
            if (!msg) return;

            // Display user message
            const userMsg = document.createElement('div');
            userMsg.style.cssText = "background: rgba(255,255,255,0.1); padding: 10px 14px; border-radius: 12px; border-top-right-radius: 4px; align-self: flex-end; max-width: 85%; color: white;";
            userMsg.innerText = msg;
            chatMessages.appendChild(userMsg);
            
            chatInput.value = '';
            chatMessages.scrollTop = chatMessages.scrollHeight;

            // Save user message to history
            chatHistory.push({ role: "user", content: msg });

            // Display loading
            const loadingMsg = document.createElement('div');
            loadingMsg.style.cssText = "color: #94a3b8; font-size: 0.9rem; margin-top: 4px; font-style: italic;";
            loadingMsg.innerHTML = `Thinking...`;
            chatMessages.appendChild(loadingMsg);
            chatMessages.scrollTop = chatMessages.scrollHeight;

            // Get context
            let ctx = {};
            try {
                ctx = JSON.parse(sessionStorage.getItem("portfolio_context") || "{}");
            } catch(e) {}

            try {
                const res = await fetch('/api/chat', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ message: msg, history: chatHistory.slice(-10), portfolio_context: ctx })
                });

                const data = await res.json();
                chatMessages.removeChild(loadingMsg);

                const responseText = data.response || data.reply || (data.detail ? "Error: " + data.detail : "No response from AI.");
                chatHistory.push({ role: "assistant", content: responseText });

                const aiMsg = document.createElement('div');
                aiMsg.style.cssText = "background: rgba(59, 130, 246, 0.1); padding: 12px 16px; border-radius: 12px; border-top-left-radius: 4px; align-self: flex-start; max-width: 85%; color: #e2e8f0; line-height: 1.5;";
                aiMsg.innerText = responseText;
                chatMessages.appendChild(aiMsg);
                chatMessages.scrollTop = chatMessages.scrollHeight;
            } catch (err) {
                chatMessages.removeChild(loadingMsg);
                const errMsg = document.createElement('div');
                errMsg.style.cssText = "color: #ef4444; font-size: 0.9rem;";
                errMsg.innerText = "Connection failed. Please try again.";
                chatMessages.appendChild(errMsg);
            }
        });
    }
});