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1804 lines (1633 loc) · 79.3 KB
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Timetable</title>
<style>
.icon{font-style:normal;margin-right:6px}
:root{
--grid-color:#e0e0e0;
--bg:#f5f5f5;
--primary-bg:#ffffff;
--secondary-bg:#f8f9fa;
--accent:#2196F3;
--text-primary:#212529;
--text-secondary:#6c757d;
--border:#dee2e6;
--recess-bg:#ADD8E6;
--free-slot-bg:#f0fff0;
}
html,body{height:100%;margin:0}
body{
font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
background-color: var(--bg);
background-image:
linear-gradient(var(--grid-color) 1px, transparent 1px),
linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
background-size:50px 50px,50px 50px;
color:var(--text-primary);
-webkit-font-smoothing:antialiased;
-moz-osx-font-smoothing:grayscale;
padding:20px;
box-sizing:border-box;
}
.wrap{max-width:1100px;margin:0 auto;background:var(--primary-bg);padding:16px;border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,0.1)}
h1{margin:0 0 12px;color:var(--text-primary);font-size:28px}
#timetable{overflow:auto}
table{border-collapse:collapse;width:100%;background:var(--secondary-bg);border-radius:8px;overflow:hidden;table-layout:fixed}
th,td{border:1px solid var(--border);padding:10px;text-align:center;color:var(--text-primary)}
th{background:var(--secondary-bg);font-weight:600;text-transform:uppercase;font-size:12px;letter-spacing:0.5px}
/* Make main timetable columns equal width except first column */
#timetable table th:first-child, #timetable table td:first-child{width:120px}
#timetable table th:not(:first-child), #timetable table td:not(:first-child){width:auto}
.timetable-cell.free{background:var(--free-slot-bg);color:#333}
.controls{margin:8px 0}
button{
padding:10px 16px;
font-size:14px;
background:var(--secondary-bg);
color:var(--text-primary);
border:1px solid var(--border);
border-radius:6px;
cursor:pointer;
transition:all 0.2s ease;
font-weight:500;
}
button:hover{
background:var(--accent);
border-color:var(--accent);
transform:translateY(-1px);
box-shadow:0 4px 12px rgba(233,69,96,0.3);
}
/* Sidebar and modal for CRUD UI */
.layout{display:flex;gap:16px}
.sidebar{
width:240px;
padding:12px;
border-right:1px solid var(--border);
background:rgba(15,52,96,0.3);
border-radius:8px;
}
.sidebar h2{font-size:18px;margin:0 0 12px;color:var(--accent);font-weight:600}
.sidebar button{display:block;width:100%;margin:6px 0;text-align:left}
.sidebar strong{color:var(--accent);font-size:14px}
.main{flex:1}
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,0.7);display:none;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.modal{
background:var(--primary-bg);
border-radius:12px;
padding:20px;
width:720px;
max-width:95%;
box-shadow:0 12px 48px rgba(0,0,0,0.5);
border:1px solid var(--border);
}
.tabs{display:flex;gap:8px;margin-bottom:8px}
.tab{
padding:8px 14px;
border:1px solid var(--border);
border-bottom:none;
background:var(--secondary-bg);
cursor:pointer;
color:var(--text-secondary);
border-radius:6px 6px 0 0;
transition:all 0.2s ease;
}
.tab:hover{background:var(--accent);color:var(--text-primary)}
.tab.active{background:var(--accent);border-bottom:1px solid var(--primary-bg);color:var(--text-primary);font-weight:600}
/* Nested tabs for sub-objects */
.nested-tabs{display:flex;gap:4px;margin:8px 0;flex-wrap:wrap}
.nested-tab{
padding:6px 12px;
border:1px solid var(--border);
background:var(--secondary-bg);
cursor:pointer;
color:var(--text-secondary);
border-radius:4px;
transition:all 0.2s ease;
font-size:13px;
}
.nested-tab:hover{background:var(--accent);color:var(--text-primary)}
.nested-tab.active{background:var(--accent);color:var(--text-primary);font-weight:600}
.tab-content{
border:1px solid var(--border);
padding:12px;
max-height:320px;
overflow:auto;
background:var(--primary-bg);
border-radius:0 8px 8px 8px;
}
.record{display:flex;justify-content:space-between;padding:6px 10px;transition:background 0.2s ease}
.record:hover{background:var(--secondary-bg)}
.record .meta{flex:1;color:var(--text-primary);font-size:14px}
.form-row{display:flex;gap:8px;align-items:center;margin:8px 0}
.form-row label{color:var(--text-primary)}
.form-row input,.form-row select{
background:var(--secondary-bg);
border:1px solid var(--border);
color:var(--text-primary);
padding:8px;
border-radius:4px;
font-size:14px;
}
.form-row input:focus,.form-row select:focus{
outline:none;
border-color:var(--accent);
box-shadow:0 0 0 3px rgba(233,69,96,0.2);
}
.hidden{display:none}
.undo-banner{
position:fixed;
right:16px;
bottom:16px;
background:var(--secondary-bg);
color:var(--text-primary);
padding:12px 16px;
border-radius:8px;
display:none;
align-items:center;
gap:12px;
box-shadow:0 4px 16px rgba(0,0,0,0.2);
border:1px solid var(--accent);
}
.timeslot-legend{display:flex;gap:12px;margin-top:8px;font-size:12px}
.timeslot-legend-item{display:flex;align-items:center;gap:4px}
.timeslot-legend-box{width:16px;height:16px;border:1px solid #999}
/* Radio button styling */
input[type="radio"]{
accent-color:var(--accent);
cursor:pointer;
}
label{cursor:pointer;color:var(--text-primary)}
/* Timetable cell hover */
.timetable-cell{cursor:pointer;transition:all 0.2s ease}
.timetable-cell:hover{background:var(--accent);transform:scale(1.05)}
/* Class editor modal - separate from main modal */
.class-editor-backdrop{position:fixed;inset:0;background:rgba(0,0,0,0.5);display:none;align-items:center;justify-content:center;backdrop-filter:blur(4px);z-index:1000}
.class-editor-modal{
background:var(--primary-bg);
border-radius:12px;
padding:20px;
width:90%;
max-width:800px;
max-height:85vh;
overflow:auto;
box-shadow:0 12px 48px rgba(0,0,0,0.2);
border:1px solid var(--border);
}
/* Timeslot table in class editor */
.timeslot-table{
width:100%;
border-collapse:collapse;
margin:12px 0;
}
.timeslot-table th, .timeslot-table td{
border:1px solid var(--border);
padding:8px;
text-align:center;
min-width:70px;
font-size:13px;
}
.timeslot-table th{
background:var(--secondary-bg);
font-weight:600;
}
.timeslot-available{
background:#90ee90;
color:#000;
cursor:pointer;
}
.timeslot-available:hover{
background:#7ad87a;
}
.timeslot-unavailable{
background:#808080;
color:#fff;
cursor:not-allowed;
}
.timeslot-selected{
background:#4CAF50;
color:#fff;
font-weight:600;
}
.conflict-text{
font-size:10px;
color:#d00;
margin-top:4px;
}
/* Compact form row for class editor */
.form-row.compact{
display:flex;
gap:12px;
align-items:center;
margin:8px 0;
}
.form-row.compact > *:not(label){
flex:1;
}
/* Group button styling */
.group-button{
padding:8px 16px;
margin:4px;
border:2px solid var(--border);
background:var(--secondary-bg);
color:var(--text-secondary);
border-radius:6px;
cursor:pointer;
transition:all 0.2s ease;
font-size:14px;
font-weight:500;
}
.group-button:hover{
border-color:var(--accent);
}
.group-button.selected{
background:var(--accent);
color:#fff;
border-color:var(--accent);
font-weight:600;
}
/* Recess cells styling */
.recess-cell{
background:var(--recess-bg) !important;
color:#333;
font-weight:600;
}
</style>
</head>
<body>
<div class="wrap layout">
<aside class="sidebar">
<h2><span class="icon">⚙️</span> Manage</h2>
<button id="newClassBtn"><span class="icon">➕</span> New Class</button>
<button id="settingsBtn"><span class="icon">⚙️</span> Settings</button>
<div style="margin-top:12px">
<strong><span class="icon">🔧</span> Config</strong>
<button id="saveConfigBtn"><span class="icon">💾</span> Save</button>
<button id="restoreConfigBtn"><span class="icon">↩️</span> Restore</button>
<button id="exportConfigBtn"><span class="icon">📤</span> Export</button>
<button id="importConfigBtn"><span class="icon">📥</span> Import</button>
<input type="file" id="importConfigFile" accept=".json" style="display:none">
</div>
</aside>
<main class="main">
<h1><span class="icon">📅</span> Timetable</h1>
<div style="display:flex;gap:12px;align-items:center;margin-bottom:8px">
<div class="tabs" id="viewModeTabs">
<div class="tab active" data-mode="teacher"><span class="icon">👨🏫</span> Teachers</div>
<div class="tab" data-mode="group"><span class="icon">👥</span> Groups</div>
<div class="tab" data-mode="room"><span class="icon">🚪</span> Rooms</div>
</div>
</div>
<div id="topTabs" class="nested-tabs"></div>
<div id="timetable" role="region" aria-label="Weekly timetable"></div>
</main>
</div>
<!-- Modal for add/edit with tabs -->
<div id="modalBackdrop" class="modal-backdrop" role="dialog" aria-hidden="true">
<div class="modal" role="document">
<div style="display:flex;justify-content:space-between;align-items:center">
<div class="tabs" id="modalTabs"></div>
<div><button id="closeModalBtn"><span class="icon">✖️</span> Close</button></div>
</div>
<div id="modalContent" class="tab-content"></div>
</div>
</div>
<div id="undoBanner" class="undo-banner"><span id="undoMsg"></span><button id="undoBtn"><span class="icon">↩️</span> Undo</button></div>
<!-- Class Editor Modal -->
<div id="classEditorBackdrop" class="class-editor-backdrop" role="dialog" aria-hidden="true">
<div class="class-editor-modal" role="document">
<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:12px">
<h2 style="margin:0;color:var(--accent)"><span class="icon">📚</span> <span id="classEditorTitle">Class Editor</span></h2>
<button id="closeClassEditorBtn"><span class="icon">✖️</span> Close</button>
</div>
<div id="classEditorContent"></div>
</div>
</div>
<script>
// ====== PERFORMANCE MONITORING INFRASTRUCTURE (REMOVED) ======
// Performance tracking has been removed as per requirements
// Removed measurePerformance wrapper - functions now execute directly
function measurePerformance(functionName, fn) {
return fn();
}
// Removed async version
async function measurePerformanceAsync(functionName, fn) {
return await fn();
}
// ====== CACHING INFRASTRUCTURE ======
const cacheStore = {
domQueries: new Map(),
configLookups: new Map(),
computedValues: new Map()
};
// Cache DOM queries
function getCachedElement(selector) {
if (!cacheStore.domQueries.has(selector)) {
cacheStore.domQueries.set(selector, document.querySelector(selector));
}
return cacheStore.domQueries.get(selector);
}
// Cache multiple DOM queries
function getCachedElements(selector) {
const cacheKey = `all:${selector}`;
if (!cacheStore.domQueries.has(cacheKey)) {
cacheStore.domQueries.set(cacheKey, Array.from(document.querySelectorAll(selector)));
}
return cacheStore.domQueries.get(cacheKey);
}
// Clear DOM cache when structure changes
function clearDOMCache() {
cacheStore.domQueries.clear();
}
// Memoize expensive computations
function memoize(fn, keyGenerator) {
return function(...args) {
const key = keyGenerator ? keyGenerator(...args) : JSON.stringify(args);
if (!cacheStore.computedValues.has(key)) {
cacheStore.computedValues.set(key, fn(...args));
}
return cacheStore.computedValues.get(key);
};
}
// Clear memoization cache
function clearComputedCache() {
cacheStore.computedValues.clear();
}
// ====== MAIN SETUP FUNCTION ======
// setup will be executed when the HTML file is loaded
function setup(){
measurePerformance('setup', () => {
measurePerformance('loadLastSaved', loadLastSaved);
measurePerformance('buildAvailabilityCache', buildAvailabilityCache);
measurePerformance('buildTimetable', buildTimetable);
console.log('setup executed: timetable built — master_config:', master_config);
});
}
function buildTimetable(){
return measurePerformance('buildTimetable', () => {
// Build a slot-based timetable with time labels and recess periods
const days = ['Mon','Tue','Wed','Thu','Fri'];
// Define time slots with labels and types
const timeSlots = [
{ slot: 1, label: '7:50-8:35', type: 'class' },
{ slot: 'short-recess', label: 'Short Recess\n8:35-8:45', type: 'recess' },
{ slot: 2, label: '8:45-9:30', type: 'class' },
{ slot: 3, label: '9:30-10:15', type: 'class' },
{ slot: 'long-recess', label: 'Long Recess\n10:15-10:30', type: 'recess' },
{ slot: 4, label: '10:30-11:15', type: 'class' },
{ slot: 5, label: '11:15-12:00', type: 'class' }
];
// Create document fragment to minimize reflows (OPTIMIZATION)
const fragment = document.createDocumentFragment();
const table = document.createElement('table');
const thead = document.createElement('thead');
const headRow = document.createElement('tr');
const emptyTh = document.createElement('th'); emptyTh.textContent='Time'; headRow.appendChild(emptyTh);
days.forEach(d=>{const th=document.createElement('th');th.textContent=d;headRow.appendChild(th)});
thead.appendChild(headRow); table.appendChild(thead);
const tbody = document.createElement('tbody');
timeSlots.forEach(timeSlot=>{
const tr = document.createElement('tr');
const slotCell = document.createElement('td');
if(timeSlot.type === 'recess'){
// For recess rows, only show time in first column
const timeMatch = timeSlot.label.match(/(\d+:\d+-\d+:\d+)/);
slotCell.textContent = timeMatch ? timeMatch[1] : timeSlot.label;
slotCell.style.whiteSpace = 'nowrap';
slotCell.style.fontWeight = '600';
tr.appendChild(slotCell);
// Create a merged cell spanning all 5 days with recess label
const mergedCell = document.createElement('td');
mergedCell.setAttribute('colspan', '5');
mergedCell.className = 'recess-cell';
const recessName = timeSlot.label.includes('Short') ? 'Short Recess' : 'Long Recess';
mergedCell.textContent = recessName;
mergedCell.style.cursor = 'default';
tr.appendChild(mergedCell);
} else {
// Regular class slot
slotCell.textContent = timeSlot.label;
slotCell.style.whiteSpace = 'pre-line';
slotCell.style.fontWeight = '600';
tr.appendChild(slotCell);
days.forEach((day,di)=>{
const td = document.createElement('td');
td.setAttribute('data-day', di);
td.setAttribute('data-slot', timeSlot.slot);
td.className = 'timetable-cell';
td.addEventListener('click', ()=> onCellClick(di, timeSlot.slot, td));
tr.appendChild(td);
});
}
tbody.appendChild(tr);
});
table.appendChild(tbody);
fragment.appendChild(table);
const container = document.getElementById('timetable');
container.innerHTML = '';
container.appendChild(fragment);
// Clear DOM cache after structure changes
clearDOMCache();
// initial render for default view
measurePerformance('renderTopTabs (from buildTimetable)', renderTopTabs);
measurePerformance('renderTimetableForCurrentView (from buildTimetable)', renderTimetableForCurrentView);
});
}
// When a cell is clicked allow assigning a class to that timeslot or editing existing class
function onCellClick(day, slot, td){
return measurePerformance('onCellClick', () => {
// Check if there's already a class assigned
const existingClassId = findClassInCell(day, slot);
if(existingClassId){
// Open class editor for this class
openClassEditor(existingClassId);
} else {
// Open class editor for a new class (instead of assign modal)
openClassEditor(null);
}
});
}
// Find class ID assigned to a specific timeslot (OPTIMIZED with cache)
// NOTE: Returns first class if multiple exist in same slot (which indicates a conflict)
function findClassInCell(day, slot){
return measurePerformance('findClassInCell', () => {
// Use availability cache for O(1) lookup instead of O(n) iteration
const slotData = availabilityCache[day]?.[slot];
if (slotData && slotData.classes.size > 0) {
// Use Set iterator directly for efficiency
return slotData.classes.values().next().value;
}
return null;
});
}
// Undo banner helpers
let undoTimer = null;
function showUndoBanner(msg, undoFn, timeout=10000){
const banner = document.getElementById('undoBanner'); const undoMsg = document.getElementById('undoMsg'); const btn = document.getElementById('undoBtn');
undoMsg.textContent = msg; banner.style.display = 'flex';
btn.onclick = ()=>{ try{ undoFn(); }catch(e){}; banner.style.display='none'; if(undoTimer) clearTimeout(undoTimer); };
if(undoTimer) clearTimeout(undoTimer);
undoTimer = setTimeout(()=>{ banner.style.display='none'; }, timeout);
}
// Delete with undo from modal
function deleteRecord(key, id){
if(!confirm('Delete this record?')) return;
const prev = JSON.stringify(master_config);
if(key === 'classes') removeClassFromCache(id);
delete master_config[key][id];
dispatchMasterConfigChanged(); renderModalContent(key);
showUndoBanner('Deleted record', ()=>{ master_config = JSON.parse(prev); buildAvailabilityCache(); dispatchMasterConfigChanged(); renderModalContent(key); });
}
function exportTimetable(){
const rows = Array.from(document.querySelectorAll('#timetable tbody tr'));
const data = rows.map(r=>{
const hour = r.querySelector('td').textContent;
const cells = Array.from(r.querySelectorAll('td')).slice(1).map(td=>td.textContent.trim());
return {hour, cells};
});
const blob = new Blob([JSON.stringify(data,null,2)],{type:'application/json'});
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url; a.download = 'timetable.json'; document.body.appendChild(a); a.click(); a.remove();
URL.revokeObjectURL(url);
}
// --- Persistence utilities for master_config ---
let master_config = {};
const INDEX_KEY = 'index';
const LAST_QUICK_SAVE_KEY = 'last_quick_save';
// --- Availability Cache for Performance Optimization ---
// Cache structure: availabilityCache[day][slot] = { teachers: Set, rooms: Set, groups: Set, classes: Set }
let availabilityCache = {};
function initAvailabilityCache(){
availabilityCache = {};
for(let day = 0; day < 5; day++){
availabilityCache[day] = {};
for(let slot = 1; slot <= 5; slot++){
availabilityCache[day][slot] = {
teachers: new Set(),
rooms: new Set(),
groups: new Set(),
classes: new Set()
};
}
}
}
function buildAvailabilityCache(){
initAvailabilityCache();
const classes = master_config.classes || {};
for(const classId of Object.keys(classes)){
const cls = classes[classId];
if(Array.isArray(cls.timeSlots)){
for(const ts of cls.timeSlots){
const slot = availabilityCache[ts.day]?.[ts.slot];
if(slot){
if(cls.teacherId) slot.teachers.add(cls.teacherId);
if(cls.roomId) slot.rooms.add(cls.roomId);
if(Array.isArray(cls.groupIds)){
cls.groupIds.forEach(gid => slot.groups.add(gid));
}
slot.classes.add(classId);
}
}
}
}
console.log('Availability cache built');
}
function updateAvailabilityCacheForClass(classId, oldTimeSlots, newTimeSlots){
const cls = master_config.classes[classId];
if(!cls) return;
// Remove old slots from cache
if(Array.isArray(oldTimeSlots)){
for(const ts of oldTimeSlots){
const slot = availabilityCache[ts.day]?.[ts.slot];
if(slot){
if(cls.teacherId) slot.teachers.delete(cls.teacherId);
if(cls.roomId) slot.rooms.delete(cls.roomId);
if(Array.isArray(cls.groupIds)){
cls.groupIds.forEach(gid => slot.groups.delete(gid));
}
slot.classes.delete(classId);
}
}
}
// Add new slots to cache
if(Array.isArray(newTimeSlots)){
for(const ts of newTimeSlots){
const slot = availabilityCache[ts.day]?.[ts.slot];
if(slot){
if(cls.teacherId) slot.teachers.add(cls.teacherId);
if(cls.roomId) slot.rooms.add(cls.roomId);
if(Array.isArray(cls.groupIds)){
cls.groupIds.forEach(gid => slot.groups.add(gid));
}
slot.classes.add(classId);
}
}
}
}
function removeClassFromCache(classId){
const cls = master_config.classes[classId];
if(!cls) return;
if(Array.isArray(cls.timeSlots)){
for(const ts of cls.timeSlots){
const slot = availabilityCache[ts.day]?.[ts.slot];
if(slot){
if(cls.teacherId) slot.teachers.delete(cls.teacherId);
if(cls.roomId) slot.rooms.delete(cls.roomId);
if(Array.isArray(cls.groupIds)){
cls.groupIds.forEach(gid => slot.groups.delete(gid));
}
slot.classes.delete(classId);
}
}
}
}
function getIndex(){
try{
const raw = localStorage.getItem(INDEX_KEY);
const parsed = JSON.parse(raw);
return Array.isArray(parsed) ? parsed : [];
}catch(e){
return [];
}
}
function setIndex(idx){
localStorage.setItem(INDEX_KEY, JSON.stringify(idx));
}
function saveMasterConfigWithTimecode(timecode){
if(typeof master_config === 'undefined' || master_config === null) master_config = {};
const key = `save_${timecode}`;
localStorage.setItem(key, JSON.stringify(master_config));
let idx = getIndex();
idx.push({timecode: timecode, key: key, ts: Date.now()});
if(idx.length > 5) idx = idx.slice(-5);
setIndex(idx);
console.log('Saved master_config under', key);
dispatchMasterConfigChanged();
}
function quickSave(){
const timecode = new Date().toISOString();
// allow label for quick save
const label = prompt('Quick save label (optional)');
// save pointer for fastest load (store object with config and label)
const quickObj = { config: master_config, label: label || ('quick '+timecode), ts: Date.now() };
localStorage.setItem(LAST_QUICK_SAVE_KEY, JSON.stringify(quickObj));
// also store a durable save under a timecode so it appears in the index
const key = `save_${timecode}`;
localStorage.setItem(key, JSON.stringify(master_config));
let idx = getIndex();
idx.push({timecode: timecode, key: key, ts: Date.now(), quick: true, label: quickObj.label});
if(idx.length > 5) idx = idx.slice(-5);
setIndex(idx);
console.log('Quick-saved master_config at', timecode);
dispatchMasterConfigChanged();
}
function autoSave(){
// Silent save without prompting (for automatic saves on modal close)
const timecode = new Date().toISOString();
const label = 'auto '+timecode;
const quickObj = { config: master_config, label: label, ts: Date.now() };
localStorage.setItem(LAST_QUICK_SAVE_KEY, JSON.stringify(quickObj));
// also store a durable save under a timecode so it appears in the index
const key = `save_${timecode}`;
localStorage.setItem(key, JSON.stringify(master_config));
let idx = getIndex();
idx.push({timecode: timecode, key: key, ts: Date.now(), quick: true, label: label});
if(idx.length > 5) idx = idx.slice(-5);
setIndex(idx);
console.log('Auto-saved master_config at', timecode);
}
function ensureMasterConfigStructure(){
if(!master_config || typeof master_config !== 'object') master_config = {};
master_config.classes = master_config.classes || {};
master_config.teachers = master_config.teachers || {};
master_config.rooms = master_config.rooms || {};
master_config.groups = master_config.groups || {};
}
function loadLastSaved(){
// Prefer the last quick save if present (it may store label and config)
const quickRaw = localStorage.getItem(LAST_QUICK_SAVE_KEY);
if(quickRaw){
try{ const q = JSON.parse(quickRaw); if(q && q.config) { master_config = q.config; ensureMasterConfigStructure(); console.log('Loaded master_config from last_quick_save (with label)'); return; } if(typeof q === 'object'){ master_config = q; ensureMasterConfigStructure(); console.log('Loaded master_config from last_quick_save'); return; } }catch(e){}
}
const idx = getIndex();
if(idx.length === 0){ master_config = {}; ensureMasterConfigStructure(); console.log('No saved index found — master_config initialized blank'); return; }
const last = idx[idx.length-1];
const raw = localStorage.getItem(last.key);
if(raw){
try{ master_config = JSON.parse(raw); ensureMasterConfigStructure(); console.log('Loaded master_config from', last.key); return; }catch(e){}
}
master_config = {};
ensureMasterConfigStructure();
console.log('Failed to load last save; master_config blank');
}
function listSaves(){
return getIndex();
}
// Dispatch event when master_config changes so UI can reactively update
function dispatchMasterConfigChanged(){
try{ document.dispatchEvent(new CustomEvent('master_config_changed')); }catch(e){}
}
// Conflict detection: return array of conflict details (empty = no conflict)
// Uses availability cache for O(1) lookups instead of O(n) iteration through all classes
function checkConflicts(classId, candidateSlots, teacherId, roomId, groupIds){
const conflicts = [];
const classes = master_config.classes || {};
for(const cs of candidateSlots){
const slot = availabilityCache[cs.day]?.[cs.slot];
if(!slot) continue;
// Check teacher conflicts
if(teacherId && slot.teachers.has(teacherId)){
// Find which class(es) have this teacher at this time
for(const otherId of slot.classes){
if(otherId === classId) continue;
const other = classes[otherId];
if(other && other.teacherId === teacherId){
conflicts.push({
type:'Teacher conflict',
id: otherId,
name: master_config.teachers[other.teacherId]?master_config.teachers[other.teacherId].name:other.teacherId,
classId: otherId,
classTitle: other.title
});
}
}
}
// Check room conflicts
if(roomId && slot.rooms.has(roomId)){
// Find which class(es) have this room at this time
for(const otherId of slot.classes){
if(otherId === classId) continue;
const other = classes[otherId];
if(other && other.roomId === roomId){
conflicts.push({
type:'Room conflict',
id: otherId,
name: master_config.rooms[other.roomId]?master_config.rooms[other.roomId].name:other.roomId,
classId: otherId,
classTitle: other.title
});
}
}
}
// Check group conflicts
if(Array.isArray(groupIds)){
for(const g of groupIds){
if(slot.groups.has(g)){
// Find which class(es) have this group at this time
for(const otherId of slot.classes){
if(otherId === classId) continue;
const other = classes[otherId];
if(other && Array.isArray(other.groupIds) && other.groupIds.includes(g)){
conflicts.push({
type:'Group conflict',
groupId: g,
groupName: master_config.groups[g]?master_config.groups[g].name:g,
classId: otherId,
classTitle: other.title
});
}
}
}
}
}
}
// dedupe by classId+type
const keySet = new Set(); const dedup = [];
conflicts.forEach(c=>{ const k = `${c.classId}|${c.type}|${c.groupId||''}`; if(!keySet.has(k)){ keySet.add(k); dedup.push(c); }});
return dedup;
}
// --- Master config structure initialization ---
// Note: structure is now initialized via ensureMasterConfigStructure() function
// --- UI: sidebar, modal, add/edit logic ---
function uid(prefix){ return prefix + '_' + Math.random().toString(36).slice(2,9); }
function openModal(tabKey){
const backdrop = document.getElementById('modalBackdrop');
backdrop.style.display = 'flex'; backdrop.setAttribute('aria-hidden','false');
renderModalTabs(tabKey);
renderModalContent(tabKey);
}
function closeModal(){
const backdrop = document.getElementById('modalBackdrop');
backdrop.style.display = 'none'; backdrop.setAttribute('aria-hidden','true');
// Refresh timetable when modal closes
renderTimetableForCurrentView();
}
// Class Editor Modal Functions
function openClassEditor(classId){
const backdrop = document.getElementById('classEditorBackdrop');
const content = document.getElementById('classEditorContent');
const titleEl = document.getElementById('classEditorTitle');
if(classId){
const cls = master_config.classes[classId];
if(!cls) return alert('Class not found');
titleEl.textContent = cls.title || 'Edit Class';
} else {
titleEl.textContent = 'New Class';
}
backdrop.style.display = 'flex';
backdrop.setAttribute('aria-hidden', 'false');
renderClassEditorForm(classId);
}
function closeClassEditor(){
const backdrop = document.getElementById('classEditorBackdrop');
backdrop.style.display = 'none';
backdrop.setAttribute('aria-hidden', 'true');
renderTimetableForCurrentView();
}
function renderClassEditorForm(editId){
const content = document.getElementById('classEditorContent');
content.innerHTML = '';
const wrapper = document.createElement('div');
// Class title
const titleRow = document.createElement('div');
titleRow.className = 'form-row';
titleRow.innerHTML = '<label>Title:</label>';
const titleInput = document.createElement('input');
titleInput.className = 'title-input';
titleInput.style.flex = '1';
if(editId) titleInput.value = master_config.classes[editId].title || '';
// Auto-save on title change for existing classes
if(editId){
titleInput.addEventListener('blur', () => {
saveClassFromEditor(editId, wrapper, true);
});
}
titleRow.appendChild(titleInput);
// Add time slot counter (read-only display)
const timeSlotCount = editId && master_config.classes[editId] && master_config.classes[editId].timeSlots
? master_config.classes[editId].timeSlots.length
: 0;
const slotCountLabel = document.createElement('label');
slotCountLabel.textContent = 'Time Slots:';
slotCountLabel.style.marginLeft = '15px';
const slotCountDisplay = document.createElement('span');
slotCountDisplay.textContent = timeSlotCount;
slotCountDisplay.style.marginLeft = '5px';
slotCountDisplay.style.fontWeight = 'bold';
slotCountDisplay.style.color = 'var(--accent)';
titleRow.appendChild(slotCountLabel);
titleRow.appendChild(slotCountDisplay);
wrapper.appendChild(titleRow);
// Compact row: Color, Teacher, Room all in one row
const compactRow = document.createElement('div');
compactRow.className = 'form-row compact';
// Color picker
const colorLabel = document.createElement('label');
colorLabel.textContent = 'Color:';
colorLabel.style.marginRight = '4px';
compactRow.appendChild(colorLabel);
const colorInput = document.createElement('input');
colorInput.type = 'color';
colorInput.className = 'color-input';
colorInput.style.height = '40px';
colorInput.style.cursor = 'pointer';
colorInput.style.minWidth = '60px';
if(editId) colorInput.value = master_config.classes[editId].color || '#4CAF50';
else colorInput.value = '#4CAF50';
compactRow.appendChild(colorInput);
// Teacher select
const teacherLabel = document.createElement('label');
teacherLabel.textContent = 'Teacher:';
teacherLabel.style.marginLeft = '12px';
teacherLabel.style.marginRight = '4px';
compactRow.appendChild(teacherLabel);
const teacherSelect = document.createElement('select');
teacherSelect.className = 'teacher-select';
const emptyOpt = document.createElement('option');
emptyOpt.value = '';
emptyOpt.textContent = '(none)';
teacherSelect.appendChild(emptyOpt);
Object.keys(master_config.teachers).forEach(tid => {
const o = document.createElement('option');
o.value = tid;
o.textContent = master_config.teachers[tid].name;
teacherSelect.appendChild(o);
});
if(editId) teacherSelect.value = master_config.classes[editId].teacherId || '';
// Auto-save on teacher change for existing classes
if(editId){
teacherSelect.addEventListener('change', () => {
saveClassFromEditor(editId, wrapper, true);
});
}
compactRow.appendChild(teacherSelect);
// Room select
const roomLabel = document.createElement('label');
roomLabel.textContent = 'Room:';
roomLabel.style.marginLeft = '12px';
roomLabel.style.marginRight = '4px';
compactRow.appendChild(roomLabel);
const roomSelect = document.createElement('select');
roomSelect.className = 'room-select';
const emptyR = document.createElement('option');
emptyR.value = '';
emptyR.textContent = '(none)';
roomSelect.appendChild(emptyR);
Object.keys(master_config.rooms).forEach(rid => {
const o = document.createElement('option');
o.value = rid;
o.textContent = master_config.rooms[rid].name;
roomSelect.appendChild(o);
});
if(editId) roomSelect.value = master_config.classes[editId].roomId || '';
// Auto-save on room change for existing classes
if(editId){
roomSelect.addEventListener('change', () => {
saveClassFromEditor(editId, wrapper, true);
});
}
compactRow.appendChild(roomSelect);
wrapper.appendChild(compactRow);
// Groups as buttons
const groupsRow = document.createElement('div');
groupsRow.className = 'form-row';
groupsRow.innerHTML = '<label style="margin-right:8px">Groups:</label>';
const groupsWrap = document.createElement('div');
groupsWrap.style.display = 'flex';
groupsWrap.style.flexWrap = 'wrap';
groupsWrap.style.gap = '4px';
groupsWrap.style.flex = '1';
Object.keys(master_config.groups).forEach(gid => {
const groupBtn = document.createElement('button');
groupBtn.type = 'button';
groupBtn.className = 'group-button';
groupBtn.setAttribute('data-group-id', gid);
groupBtn.textContent = master_config.groups[gid].name || 'Group';
if(editId && Array.isArray(master_config.classes[editId].groupIds) && master_config.classes[editId].groupIds.includes(gid)) {
groupBtn.classList.add('selected');
}
groupBtn.addEventListener('click', (e) => {
e.preventDefault();
groupBtn.classList.toggle('selected');
// Auto-save on group change for existing classes
if(editId){
saveClassFromEditor(editId, wrapper, true);
}
});
groupsWrap.appendChild(groupBtn);
});
groupsRow.appendChild(groupsWrap);
wrapper.appendChild(groupsRow);
// Timeslot table
const tsLabel = document.createElement('h3');