BM/allocation.html at main · drphe/BM · GitHub

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<!DOCTYPE html>
<html lang="vi">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Phân bổ tỷ trọng của các lớp tài sản</title>
    <script src="tailwindcss.js"></script>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
    <link href="loading.css" rel="stylesheet">
    <style>
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f8fafc; /* slate-50 */
        }
        .handle {
            touch-action: none; /* Prevent scrolling on touch devices when dragging */
            cursor: grab;
            z-index: 10;
            transition: left 0.2s ease-out, background-color 0.3s ease, border-color 0.3s ease;
        }
        .handle:active {
            cursor: grabbing;
        }
        .slider-track {
            position: relative;
        }
        .asset-label {
            background-color: #f1f5f9; /* slate-100 */
            border-radius: 0.375rem;
            padding: 0.5rem 1rem;
            text-align: center;
            font-weight: 500;
	    font-size: 0.85rem;
            color: #475569; /* slate-600 */
        }
    </style>
</head>
<body class="p-4 sm:p-6 md:p-8">

    <div class="max-w-4xl mx-auto bg-white p-6 sm:p-8 rounded-2xl shadow-lg">
        <!-- Header -->
        <div class="bg-[#1e3a8a] text-white p-4 rounded-t-xl -m-6 sm:-m-8 mb-6 sm:mb-8">
            <h1 class="text-xl sm:text-2xl font-bold">Phân bổ tỷ trọng của các lớp tài sản</h1>
        </div>

        <!-- Timeline Labels -->
        <div class="flex justify-between items-center mb-5 px-2 sm:px-4 text-center text-xs sm:text-sm text-slate-600 font-medium">
            <div class="w-1/5">
                <div class="w-4 h-4 rounded-full bg-pink-300 mx-auto mb-2 border-2 border-pink-400"></div>
                Tỷ trọng<br>rất thấp<br>(Very Underweight)
            </div>
            <div class="w-1/5">
                <div class="w-4 h-4 rounded-full bg-fuchsia-500 mx-auto mb-2 border-2 border-fuchsia-600"></div>
                Tỷ trọng<br>ít ưu tiên<br>(Underweight)
            </div>
            <div class="w-1/5">
                <div class="w-4 h-4 rounded-full bg-slate-400 mx-auto mb-2 border-2 border-slate-500"></div>
                Tỷ trọng<br>trung bình<br>(Neutral)
            </div>
            <div class="w-1/5">
                <div class="w-4 h-4 rounded-full bg-sky-500 mx-auto mb-2 border-2 border-sky-600"></div>
                Tỷ trọng<br>ưu tiên<br>(Overweight)
            </div>
            <div class="w-1/5">
                <div class="w-4 h-4 rounded-full bg-blue-800 mx-auto mb-2 border-2 border-blue-900"></div>
                Tỷ trọng<br>rất ưu tiên<br>(Very Overweight)
            </div>
        </div>

        <!-- Asset Sliders -->
        <div id="asset-container" class="space-y-8">
            <!-- Asset rows will be injected here by JavaScript -->
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function () {
            const assetContainer = document.getElementById('asset-container');
            const STORAGE_KEY = 'assetAllocationState';

            // Default data for asset classes, based on the image
            // currentPosition/previousPosition: 0, 25, 50, 75, 100
            let assets = [
                { name: 'Tiền gửi /tiền mặt', currentPosition: 25, previousPosition: 0 },
                { name: 'Trái phiếu/CCQ trái phiếu', currentPosition: 0, previousPosition: 0 },
                { name: 'Vàng', currentPosition: 75, previousPosition: 100 },
                { name: 'Cổ phiếu', currentPosition: 75, previousPosition: 100 },
                { name: 'USD/VND', currentPosition: 75, previousPosition: 100 },
                { name: 'Crypto', currentPosition: 75, previousPosition: 100 },
            ];

            const snapPoints = [0, 25, 50, 75, 100]; // in percentage

            // Map positions to their corresponding color classes
            const positionColors = {
                0:   ['bg-pink-300', 'border-pink-400'],
                25:  ['bg-fuchsia-500', 'border-fuchsia-600'],
                50:  ['bg-slate-400', 'border-slate-500'],
                75:  ['bg-sky-500', 'border-sky-600'],
                100: ['bg-blue-800', 'border-blue-900'],
            };

            const allColorClasses = Object.values(positionColors).flat();

            // --- LocalStorage Functions ---
            function saveState() {
                const stateToSave = assets.map(asset => ({
                    currentPosition: asset.currentPosition,
                    previousPosition: asset.previousPosition
                }));
                localStorage.setItem(STORAGE_KEY, JSON.stringify(stateToSave));
            }

            function loadState() {
                const savedState = localStorage.getItem(STORAGE_KEY);
                if (savedState) {
                    try {
                        const parsedState = JSON.parse(savedState);
                        if (Array.isArray(parsedState) && parsedState.length === assets.length) {
                            assets.forEach((asset, index) => {
                                asset.currentPosition = parsedState[index].currentPosition;
                                asset.previousPosition = parsedState[index].previousPosition;
                            });
                        }
                    } catch (error) {
                        console.error("Error loading state from localStorage:", error);
                    }
                }
            }

            // --- UI Generation Function ---
            function renderAssets() {
                assetContainer.innerHTML = ''; // Clear existing assets before re-rendering
                assets.forEach((asset, index) => {
                    const currentColorClasses = positionColors[asset.currentPosition] || positionColors[50];
                    const assetRow = document.createElement('div');
                    assetRow.className = 'grid grid-cols-4 items-center gap-4';
                    assetRow.innerHTML = `
                        <div class="col-span-1 asset-label">
                            ${asset.name}
                        </div>
                        <div class="col-span-3 relative flex items-center">
                            <div class="w-full h-1 bg-slate-300 rounded-full slider-track">
                                <!-- Previous Position Handle (White Dot) -->
                                <div id="previous-handle-${index}"
                                     class="absolute w-5 h-5 bg-white border-2 border-slate-400 rounded-full shadow-sm"
                                     style="top: 50%; transform: translate(-50%, -50%); left: ${asset.previousPosition}%;">
                                </div>
                                <!-- Draggable Handle (Current Position) -->
                                <div id="handle-${index}"
                                     data-index="${index}"
                                     class="handle absolute w-5 h-5 rounded-full ${currentColorClasses.join(' ')} border-2 shadow-md"
                                     style="top: 50%; transform: translate(-50%, -50%); left: ${asset.currentPosition}%;">
                                </div>
                            </div>
                        </div>
                    `;
                    assetContainer.appendChild(assetRow);
                });
                addDragListeners(); // Re-attach listeners after rendering
            }

            // --- Drag and Drop Logic ---
            function addDragListeners() {
                const handles = document.querySelectorAll('.handle');

                handles.forEach(handle => {
                    let isDragging = false;

                    const startDrag = (e) => {
                        isDragging = true;
                        handle.style.transition = 'none';
                        handle.classList.add('scale-125');
                    };

                    const endDrag = (e) => {
                        if (!isDragging) return;
                        isDragging = false;
                        handle.style.transition = 'left 0.2s ease-out, background-color 0.3s ease, border-color 0.3s ease';
                        handle.classList.remove('scale-125');

                        const track = handle.parentElement;
                        const trackRect = track.getBoundingClientRect();
                        const handleRect = handle.getBoundingClientRect();

                        const currentPosPercent = ((handleRect.left + handleRect.width / 2) - trackRect.left) / trackRect.width * 100;

                        const closestSnapPoint = snapPoints.reduce((prev, curr) => {
                            return (Math.abs(curr - currentPosPercent) < Math.abs(prev - currentPosPercent) ? curr : prev);
                        });

                        handle.style.left = `${closestSnapPoint}%`;

                        // Update color based on new position
                        const newColorClasses = positionColors[closestSnapPoint];
                        handle.classList.remove(...allColorClasses);
                        handle.classList.add(...newColorClasses);

                        // Update state and save
                        const assetIndex = parseInt(handle.dataset.index);
                        const asset = assets[assetIndex];

                        if (asset.currentPosition !== closestSnapPoint) {
                            asset.previousPosition = asset.currentPosition;
                            asset.currentPosition = closestSnapPoint;

                            const previousHandle = document.getElementById(`previous-handle-${assetIndex}`);
                            previousHandle.style.left = `${asset.previousPosition}%`;

                            saveState();
                        }
                    };

                    const onDrag = (e) => {
                        if (!isDragging) return;
                        e.preventDefault();

                        const clientX = e.clientX || e.touches[0].clientX;
                        const track = handle.parentElement;
                        const trackRect = track.getBoundingClientRect();

                        let newLeft = clientX - trackRect.left;

                        if (newLeft < 0) newLeft = 0;
                        if (newLeft > trackRect.width) newLeft = trackRect.width;

                        handle.style.left = `${(newLeft / trackRect.width) * 100}%`;
                    };

                    handle.addEventListener('mousedown', startDrag);
                    handle.addEventListener('touchstart', startDrag);

                    document.addEventListener('mouseup', endDrag);
                    document.addEventListener('touchend', endDrag);

                    document.addEventListener('mousemove', onDrag);
                    document.addEventListener('touchmove', onDrag, { passive: false });
                });
            }

            // --- Initialisation ---
            loadState();
            renderAssets();
        });
    </script>

</body>
</html>