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| 1 | +/** |
| 2 | + * Live Reload WebSocket Client |
| 3 | + * Include this script in your HTML pages to enable live reload functionality |
| 4 | + * when using the beans CLI development server. |
| 5 | + */ |
| 6 | + |
| 7 | +(function() { |
| 8 | + 'use strict'; |
| 9 | + |
| 10 | + // Configuration |
| 11 | + const WS_URL = 'ws://localhost:8081'; |
| 12 | + const RECONNECT_DELAY = 1000; |
| 13 | + |
| 14 | + Window.lob_ws = Window.lob_ws || null; |
| 15 | + let reconnectTimer = null; |
| 16 | + |
| 17 | + // Create connection status indicator |
| 18 | + function createStatusIndicator() { |
| 19 | + const indicator = document.createElement('div'); |
| 20 | + indicator.id = 'live-reload-status'; |
| 21 | + indicator.style.cssText = ` |
| 22 | + position: fixed; |
| 23 | + top: 10px; |
| 24 | + right: 10px; |
| 25 | + width: 12px; |
| 26 | + height: 12px; |
| 27 | + border-radius: 50%; |
| 28 | + background-color: #dc3545; |
| 29 | + z-index: 9999; |
| 30 | + transition: background-color 0.3s ease; |
| 31 | + `; |
| 32 | + document.body.appendChild(indicator); |
| 33 | + return indicator; |
| 34 | + } |
| 35 | + |
| 36 | + // Update connection status |
| 37 | + function updateStatus(connected) { |
| 38 | + const indicator = document.getElementById('live-reload-status'); |
| 39 | + if (indicator) { |
| 40 | + indicator.style.backgroundColor = connected ? '#28a745' : '#dc3545'; |
| 41 | + } |
| 42 | + } |
| 43 | + |
| 44 | + // Reload stylesheets to force CSS refresh |
| 45 | + function reloadStylesheets() { |
| 46 | + document.querySelectorAll('link[rel="stylesheet"]').forEach(link => { |
| 47 | + const newHref = link.href.replace(/\?.*$/, '') + '?v=' + Date.now(); |
| 48 | + link.href = newHref; |
| 49 | + }); |
| 50 | + } |
| 51 | + |
| 52 | + // Connect to WebSocket server |
| 53 | + function connect() { |
| 54 | + if (Window.lob_ws && Window.lob_ws.readyState === WebSocket.OPEN) { |
| 55 | + updateStatus(true); |
| 56 | + return; |
| 57 | + } |
| 58 | + |
| 59 | + try { |
| 60 | + Window.lob_ws = Window.lob_ws || new WebSocket(WS_URL); |
| 61 | + if (Window.lob_ws.readyState == 3) { |
| 62 | + Window.lob_ws = new WebSocket(WS_URL); |
| 63 | + } |
| 64 | + |
| 65 | + Window.lob_ws.onopen = function() { |
| 66 | + updateStatus(true); |
| 67 | + }; |
| 68 | + |
| 69 | + Window.lob_ws.onmessage = async function(event) { |
| 70 | + try { |
| 71 | + const data = JSON.parse(event.data); |
| 72 | + if (data.type === 'file_changed') { |
| 73 | + // Reload page for relevant file changes |
| 74 | + if (shouldReload(data.path)) { |
| 75 | + setTimeout(async () => { |
| 76 | + const isCSS = data.path.toLowerCase().endsWith('.css'); |
| 77 | + if (isCSS) { |
| 78 | + // For CSS changes, just reload stylesheets without touching body |
| 79 | + reloadStylesheets(); |
| 80 | + } else { |
| 81 | + // For other changes, fetch and replace body content |
| 82 | + const newPage = await fetch(window.location.href, { |
| 83 | + headers: { "X-Requested-With": "fetch-update" } |
| 84 | + }); |
| 85 | + const html = await newPage.text(); |
| 86 | + |
| 87 | + // Parse and replace <body> content safely |
| 88 | + const parser = new DOMParser(); |
| 89 | + const doc = parser.parseFromString(html, "text/html"); |
| 90 | + document.body.innerHTML = doc.body.innerHTML; |
| 91 | + |
| 92 | + // Optionally re-run scripts if needed |
| 93 | + const scripts = document.body.querySelectorAll("script"); |
| 94 | + scripts.forEach(oldScript => { |
| 95 | + const newScript = document.createElement("script"); |
| 96 | + if (oldScript.src) { |
| 97 | + newScript.src = oldScript.src; |
| 98 | + } else { |
| 99 | + newScript.textContent = oldScript.textContent; |
| 100 | + } |
| 101 | + // Remove the old script node before appending new to avoid duplicates |
| 102 | + oldScript.parentNode.removeChild(oldScript); |
| 103 | + document.body.appendChild(newScript); |
| 104 | + }); |
| 105 | + } |
| 106 | + }, 100); |
| 107 | + } |
| 108 | + } |
| 109 | + } catch (e) { |
| 110 | + console.log('Received:', event.data); |
| 111 | + } |
| 112 | + }; |
| 113 | + |
| 114 | + Window.lob_ws.onclose = function() { |
| 115 | + updateStatus(false); |
| 116 | + scheduleReconnect(); |
| 117 | + }; |
| 118 | + |
| 119 | + Window.lob_ws.onerror = function(error) { |
| 120 | + updateStatus(false); |
| 121 | + scheduleReconnect(); |
| 122 | + }; |
| 123 | + |
| 124 | + } catch (error) { |
| 125 | + scheduleReconnect(); |
| 126 | + } |
| 127 | + } |
| 128 | + |
| 129 | + // Determine if page should reload for this file change |
| 130 | + function shouldReload(filePath) { |
| 131 | + const reloadExtensions = ['.html', '.css', '.js', '.lua', '.etlua']; |
| 132 | + const reloadPaths = ['/']; |
| 133 | + |
| 134 | + // Check file extension |
| 135 | + const hasReloadExtension = reloadExtensions.some(ext => |
| 136 | + filePath.toLowerCase().endsWith(ext) |
| 137 | + ); |
| 138 | + |
| 139 | + // Check if file is in a reload-worthy directory |
| 140 | + const isInReloadPath = reloadPaths.some(path => |
| 141 | + filePath.includes(path) |
| 142 | + ); |
| 143 | + |
| 144 | + return hasReloadExtension || isInReloadPath; |
| 145 | + } |
| 146 | + |
| 147 | + // Schedule reconnection attempt |
| 148 | + function scheduleReconnect() { |
| 149 | + if (reconnectTimer) { |
| 150 | + clearTimeout(reconnectTimer); |
| 151 | + } |
| 152 | + |
| 153 | + reconnectTimer = setTimeout(() => { |
| 154 | + connect(); |
| 155 | + }, RECONNECT_DELAY); |
| 156 | + } |
| 157 | + |
| 158 | + // Initialize live reload |
| 159 | + function init() { |
| 160 | + // Only run in development mode (when localhost) |
| 161 | + if (window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1') { |
| 162 | + createStatusIndicator(); |
| 163 | + connect(); |
| 164 | + } |
| 165 | + } |
| 166 | + |
| 167 | + // Start when DOM is ready |
| 168 | + init(); |
| 169 | +})(); |
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