study-lab/app.js
app.jsRaw
1(() => {
2 'use strict';
3
4 const APP_PREFIX = 'study-lab';
5 const STORAGE_KEY = `${APP_PREFIX}:v1`;
6 const SETTINGS_KEY = `${APP_PREFIX}:settings:v1`;
7 const USAGE_KEY = `${APP_PREFIX}:usage:v1`;
8 const OPENROUTER_PRICES_KEY = `${APP_PREFIX}:openrouter-prices:v1`;
9 const TREE_ZOOM_KEY = `${APP_PREFIX}:tree-zoom`;
10 const THEME_KEY = `${APP_PREFIX}:theme`;
11 const FILE_REQUEST_LIMIT = 50 * 1024 * 1024;
12 const PRICE_CACHE_TTL = 24 * 60 * 60 * 1000;
13 const PROVIDERS = {
14 openai: {
15 label: 'OpenAI', apiUrl: 'https://api.openai.com/v1/responses', model: 'gpt-5-mini',
16 models: ['gpt-5-mini', 'gpt-5', 'gpt-4.1-mini', 'gpt-4.1']
17 },
18 openrouter: {
19 label: 'OpenRouter', apiUrl: 'https://openrouter.ai/api/v1/responses', model: 'openai/gpt-5-mini',
20 models: ['openai/gpt-5-mini', 'anthropic/claude-sonnet-4', 'google/gemini-2.5-pro', 'deepseek/deepseek-r1']
21 }
22 };
23 // USD per million tokens. Last checked against OpenAI Docs on 2026-08-17.
24 const MODEL_PRICES = [
25 { match: /^gpt-5\.6-terra(?:-|$)/, input: 2, cached: .2, output: 12 },
26 { match: /^gpt-5\.6-luna(?:-|$)/, input: .2, cached: .02, output: 1.2 },
27 { match: /^gpt-5\.6-sol(?:-|$)/, input: 5, cached: .5, output: 30 },
28 { match: /^gpt-5\.6$/, input: 5, cached: .5, output: 30 },
29 { match: /^gpt-5\.4-mini(?:-|$)/, input: .75, cached: .075, output: 4.5 },
30 { match: /^gpt-5\.4(?:-20\d{2}|$)/, input: 2.5, cached: .25, output: 15 },
31 { match: /^gpt-5-mini(?:-|$)/, input: .25, cached: .025, output: 2 },
32 { match: /^gpt-5-nano(?:-|$)/, input: .05, cached: .005, output: .4 },
33 { match: /^gpt-5(?:-20\d{2}|$)/, input: 1.25, cached: .125, output: 10 },
34 { match: /^gpt-4\.1-mini(?:-|$)/, input: .4, cached: .1, output: 1.6 },
35 { match: /^gpt-4\.1(?:-20\d{2}|$)/, input: 2, cached: .5, output: 8 },
36 { match: /^gpt-4o-mini(?:-|$)/, input: .15, cached: .075, output: .6 }
37 ];
38 const DEFAULT_SETTINGS = {
39 activeModelId: 'model-openai',
40 apiKeys: { openai: '', openrouter: '' },
41 models: [{ id: 'model-openai', provider: 'openai', model: 'gpt-5-mini', apiUrl: 'https://api.openai.com/v1/responses' }],
42 systemPrompt: 'You are a patient technical tutor. Use clear Markdown and LaTeX where useful. Use mathematical language, assume graduate level knowledge. Build on the conversation context and explain assumptions.'
43 };
44
45 const $ = (selector, root = document) => root.querySelector(selector);
46 const els = {
47 welcome: $('#welcome'), conversation: $('#conversation'), composer: $('#composer'),
48 prompt: $('#prompt'), send: $('#send'), tree: $('#tree'), mapEmpty: $('#map-empty'),
49 nodeCount: $('#node-count'), branchCount: $('#branch-count'), branchContext: $('#branch-context'),
50 branchLabel: $('#branch-label'), selectionMenu: $('#selection-menu'), selectionPreview: $('#selection-preview'),
51 selectionAction: $('#selection-action'), selectionCustom: $('#selection-custom'), settings: $('#settings-dialog'),
52 openaiApiKey: $('#openai-api-key'), openrouterApiKey: $('#openrouter-api-key'), modelConfigs: $('#model-configs'),
53 openaiModelOptions: $('#openai-model-options'), openrouterModelOptions: $('#openrouter-model-options'),
54 systemPrompt: $('#system-prompt'),
55 keyStatus: $('#key-status'), toast: $('#toast'), usageDialog: $('#usage-dialog'),
56 monthTokens: $('#month-tokens'), usageMonth: $('#usage-month'), usageTotal: $('#usage-total'),
57 usageCost: $('#usage-cost'), usageRequests: $('#usage-requests'), usageInput: $('#usage-input'),
58 usageCached: $('#usage-cached'), usageOutput: $('#usage-output'), usageModels: $('#usage-models'),
59 usageRecent: $('#usage-recent'), usageNote: $('#usage-note'), usageDashboard: $('#usage-dashboard'), historyList: $('#history-list'),
60 historyEmpty: $('#history-empty'), historyToggle: $('#toggle-history'),
61 attachments: $('#attachments'), uploadFile: $('#upload-file'), fileInput: $('#file-input'),
62 activeConnection: $('#active-connection'), activeModel: $('#active-model'), activeProvider: $('#active-provider'),
63 conversationSearch: $('#conversation-search'), searchResults: $('#search-results'),
64 treeZoom: $('#tree-zoom'), shortcutsDialog: $('#shortcuts-dialog')
65 };
66
67 migrateLegacyStorage();
68 let settings = normalizeSettings(loadJSON(SETTINGS_KEY, DEFAULT_SETTINGS));
69 let settingsDraft = null;
70 let workspace = loadWorkspace();
71 let state = currentMap();
72 let usageRecords = loadUsage();
73 let openRouterPrices = loadOpenRouterPrices();
74 let activeRequest = null;
75 let uploadingFiles = false;
76 let uploadTargetMapId = null;
77 let selectedText = null;
78 let saveTimer = 0;
79 let toastTimer = 0;
80 let searchTimer = 0;
81 let searchIndex = null;
82 let pendingG = false;
83 let pendingGTimer = 0;
84 let treeZoom = loadTreeZoom();
85
86 function loadJSON(key, fallback) {
87 try { return JSON.parse(localStorage.getItem(key) || 'null') || fallback; }
88 catch { return { ...fallback }; }
89 }
90
91 function normalizeSettings(value = {}) {
92 const apiKeys = {
93 openai: String(value.apiKeys?.openai ?? value.profiles?.openai?.apiKey ?? value.apiKey ?? ''),
94 openrouter: String(value.apiKeys?.openrouter ?? value.profiles?.openrouter?.apiKey ?? '')
95 };
96 let sourceModels = Array.isArray(value.models) ? value.models : null;
97 if (!sourceModels?.length && value.profiles) {
98 sourceModels = Object.entries(PROVIDERS).map(([provider, defaults]) => ({
99 id: `model-${provider}`, provider, model: value.profiles[provider]?.model || defaults.model,
100 apiUrl: value.profiles[provider]?.apiUrl || defaults.apiUrl
101 }));
102 }
103 if (!sourceModels?.length) {
104 const provider = PROVIDERS[value.provider] ? value.provider : 'openai';
105 sourceModels = [{
106 id: 'model-openai', provider, model: value.model || PROVIDERS[provider].model,
107 apiUrl: value.apiUrl || PROVIDERS[provider].apiUrl
108 }];
109 }
110 const usedIds = new Set();
111 const models = sourceModels.map((saved, index) => {
112 const provider = PROVIDERS[saved?.provider] ? saved.provider : 'openai';
113 let id = String(saved?.id || `model-${index + 1}`);
114 while (usedIds.has(id)) id = `${id}-${index + 1}`;
115 usedIds.add(id);
116 return {
117 id, provider, model: String(saved?.model || PROVIDERS[provider].model),
118 apiUrl: String(saved?.apiUrl || PROVIDERS[provider].apiUrl)
119 };
120 });
121 const legacyActive = models.find(model => model.provider === value.provider)?.id;
122 const activeModelId = models.some(model => model.id === value.activeModelId)
123 ? value.activeModelId : (legacyActive || models[0].id);
124 const active = models.find(model => model.id === activeModelId) || models[0];
125 return {
126 activeModelId, apiKeys, models, provider: active.provider, apiKey: apiKeys[active.provider],
127 model: active.model, apiUrl: active.apiUrl,
128 systemPrompt: String(value.systemPrompt ?? DEFAULT_SETTINGS.systemPrompt)
129 };
130 }
131
132 function providerLabel(provider = settings.provider) {
133 return PROVIDERS[provider]?.label || 'API provider';
134 }
135
136 function requestHeaders(json = false, connection = settings) {
137 const headers = { 'Authorization': `Bearer ${connection.apiKey}` };
138 if (json) headers['Content-Type'] = 'application/json';
139 if (connection.provider === 'openrouter') headers['X-OpenRouter-Title'] = 'Study Lab';
140 return headers;
141 }
142
143 function migrateLegacyStorage() {
144 const legacyPrefix = ['study', 'pal'].join('-');
145 const suffixes = [':v1', ':settings:v1', ':usage:v1', ':theme', ':tree-zoom'];
146 for (const suffix of suffixes) {
147 const currentKey = `${APP_PREFIX}${suffix}`;
148 const legacyKey = `${legacyPrefix}${suffix}`;
149 try {
150 if (localStorage.getItem(currentKey) === null && localStorage.getItem(legacyKey) !== null) {
151 localStorage.setItem(currentKey, localStorage.getItem(legacyKey));
152 }
153 } catch {}
154 }
155 }
156
157 function loadUsage() {
158 try {
159 const records = JSON.parse(localStorage.getItem(USAGE_KEY) || '[]');
160 return Array.isArray(records) ? records.filter(record => record && Number.isFinite(record.timestamp)) : [];
161 } catch { return []; }
162 }
163
164 function loadOpenRouterPrices() {
165 try {
166 const prices = JSON.parse(localStorage.getItem(OPENROUTER_PRICES_KEY) || '{}');
167 return prices && typeof prices === 'object' && !Array.isArray(prices) ? prices : {};
168 } catch { return {}; }
169 }
170
171 function persistOpenRouterPrices() {
172 const recent = Object.entries(openRouterPrices)
173 .sort((a, b) => (Number(b[1]?.checkedAt) || 0) - (Number(a[1]?.checkedAt) || 0))
174 .slice(0, 40);
175 openRouterPrices = Object.fromEntries(recent);
176 try { localStorage.setItem(OPENROUTER_PRICES_KEY, JSON.stringify(openRouterPrices)); } catch {}
177 }
178
179 function loadTreeZoom() {
180 try { return Math.max(.8, Math.min(1.4, Number(localStorage.getItem(TREE_ZOOM_KEY)) || 1)); }
181 catch { return 1; }
182 }
183
184 function blankMap() {
185 const now = Date.now();
186 return { id: uid(), title: 'Untitled map', titleCustom: false, nodes: [], attachments: [], collapsedIds: [], activeId: null, createdAt: now, updatedAt: now };
187 }
188
189 function titleFromNodes(nodes) {
190 const first = nodes.find(node => !node.parentId) || nodes[0];
191 if (!first) return 'Untitled map';
192 const title = String(first.question).replace(/\s+/g, ' ').trim();
193 return title.length > 54 ? `${title.slice(0, 54)}…` : title;
194 }
195
196 function normalizeMap(value = {}) {
197 const normalized = normalizeState(value);
198 const attachments = Array.isArray(value.attachments) ? value.attachments
199 .filter(file => file && file.id && file.name)
200 .map(file => ({
201 id: String(file.id), name: String(file.name), size: Number(file.size) || 0,
202 createdAt: Number(file.createdAt) || Date.now(), detail: file.detail === 'high' ? 'high' : 'low',
203 kind: file.kind === 'markdown' || String(file.name).toLowerCase().endsWith('.md') ? 'markdown' : 'pdf',
204 provider: PROVIDERS[file.provider] ? file.provider : 'openai'
205 })) : [];
206 const createdAt = Number(value.createdAt) || Number(normalized.nodes[0]?.createdAt) || Date.now();
207 return {
208 id: String(value.id || uid()),
209 title: String(value.title || titleFromNodes(normalized.nodes)),
210 titleCustom: Boolean(value.titleCustom),
211 ...normalized,
212 attachments,
213 collapsedIds: Array.isArray(value.collapsedIds) ? [...new Set(value.collapsedIds.map(String))] : [],
214 createdAt,
215 updatedAt: Number(value.updatedAt) || Number(normalized.nodes.at(-1)?.createdAt) || createdAt
216 };
217 }
218
219 function loadWorkspace() {
220 let raw = null;
221 try { raw = JSON.parse(localStorage.getItem(STORAGE_KEY) || 'null'); } catch {}
222 let maps = [];
223 let activeMapId = null;
224 if (raw && Array.isArray(raw.maps)) {
225 maps = raw.maps.filter(Boolean).map(normalizeMap);
226 activeMapId = raw.activeMapId;
227 } else if (raw && Array.isArray(raw.nodes) && raw.nodes.length) {
228 // Migrate the original single-map schema in place.
229 const migrated = normalizeMap(raw);
230 maps = [migrated];
231 activeMapId = migrated.id;
232 }
233 if (!maps.length) maps.push(blankMap());
234 if (!maps.some(map => map.id === activeMapId)) activeMapId = maps[0].id;
235 return { version: 2, maps, activeMapId };
236 }
237
238 function currentMap() {
239 return workspace.maps.find(map => map.id === workspace.activeMapId) || workspace.maps[0];
240 }
241
242 function normalizeState(value) {
243 const nodes = Array.isArray(value.nodes) ? value.nodes.filter(n => n && n.id && n.question).map(node => {
244 if (node.status !== 'loading') return node;
245 return { ...node, status: 'error', error: 'The page was closed before this response finished.' };
246 }) : [];
247 const activeId = nodes.some(n => n.id === value.activeId) ? value.activeId : (nodes.at(-1)?.id || null);
248 return { nodes, activeId };
249 }
250
251 function persistSoon() {
252 clearTimeout(saveTimer);
253 saveTimer = setTimeout(() => {
254 try { localStorage.setItem(STORAGE_KEY, JSON.stringify(workspace)); }
255 catch { showToast('Browser storage is full — conversations could not be saved'); }
256 }, 180);
257 }
258
259 function persistNow() {
260 clearTimeout(saveTimer);
261 try { localStorage.setItem(STORAGE_KEY, JSON.stringify(workspace)); return true; }
262 catch { showToast('Browser storage is full — conversations could not be saved'); return false; }
263 }
264
265 function touchMap(map = state) { map.updatedAt = Date.now(); searchIndex = null; }
266
267 function refreshMapTitle(map = state) {
268 if (!map.titleCustom) map.title = titleFromNodes(map.nodes);
269 }
270
271 function nodeById(id, map = state) { return map.nodes.find(node => node.id === id); }
272
273 function pathTo(id, map = state) {
274 const path = [];
275 const seen = new Set();
276 let node = nodeById(id, map);
277 while (node && !seen.has(node.id)) {
278 seen.add(node.id);
279 path.push(node);
280 node = nodeById(node.parentId, map);
281 }
282 return path.reverse();
283 }
284
285 function childrenOf(id) { return state.nodes.filter(node => node.parentId === id); }
286
287 function uid() {
288 return globalThis.crypto?.randomUUID?.() || `${Date.now().toString(36)}-${Math.random().toString(36).slice(2)}`;
289 }
290
291 function escapeHTML(value = '') {
292 return value.replace(/[&<>'"]/g, char => ({ '&':'&', '<':'<', '>':'>', "'":''', '"':'"' })[char]);
293 }
294
295 function inlineMarkdown(text) {
296 let output = escapeHTML(text);
297 output = output.replace(/`([^`]+)`/g, '<code>$1</code>');
298 output = output.replace(/\*\*([^*]+)\*\*/g, '<strong>$1</strong>');
299 output = output.replace(/(?<!\*)\*([^*\n]+)\*(?!\*)/g, '<em>$1</em>');
300 output = output.replace(/\[([^\]]+)\]\((https?:\/\/[^\s)]+)\)/g, '<a href="$2" target="_blank" rel="noopener noreferrer">$1</a>');
301 return output;
302 }
303
304 function tableCells(line) {
305 let source = line.trim();
306 if (source.startsWith('|')) source = source.slice(1);
307 if (source.endsWith('|') && !source.endsWith('\\|')) source = source.slice(0, -1);
308 const cells = [];
309 let cell = '';
310 let code = false;
311 for (let index = 0; index < source.length; index += 1) {
312 const char = source[index];
313 if (char === '\\' && source[index + 1] === '|') {
314 cell += '|';
315 index += 1;
316 } else if (char === '`') {
317 code = !code;
318 cell += char;
319 } else if (char === '|' && !code) {
320 cells.push(cell.trim());
321 cell = '';
322 } else cell += char;
323 }
324 cells.push(cell.trim());
325 return cells;
326 }
327
328 function tableDelimiter(line) {
329 const cells = tableCells(line);
330 if (!line.includes('|') || !cells.length || cells.some(cell => !/^:?-{3,}:?$/.test(cell))) return null;
331 return cells.map(cell => cell.startsWith(':') && cell.endsWith(':') ? 'center' : cell.endsWith(':') ? 'right' : cell.startsWith(':') ? 'left' : '');
332 }
333
334 function renderTable(header, alignments, rows) {
335 const cellHTML = (cell, tag, index) => {
336 const alignment = alignments[index] ? ` style="text-align: ${alignments[index]}"` : '';
337 const scope = tag === 'th' ? ' scope="col"' : '';
338 return `<${tag}${scope}${alignment}>${inlineMarkdown(cell || '')}</${tag}>`;
339 };
340 const head = header.map((cell, index) => cellHTML(cell, 'th', index)).join('');
341 const body = rows.map(row => `<tr>${header.map((_, index) => cellHTML(row[index], 'td', index)).join('')}</tr>`).join('');
342 return `<div class="table-scroll"><table><thead><tr>${head}</tr></thead>${body ? `<tbody>${body}</tbody>` : ''}</table></div>`;
343 }
344
345 function renderMath(source, displayMode) {
346 if (!globalThis.katex) return `<code class="math-fallback">${escapeHTML(source)}</code>`;
347 try { return katex.renderToString(source, { displayMode, throwOnError: false, strict: false, trust: false }); }
348 catch { return `<code class="math-fallback">${escapeHTML(source)}</code>`; }
349 }
350
351 function markdown(source = '') {
352 const stash = [];
353 const token = html => `\u0000${stash.push(html) - 1}\u0000`;
354 let text = source.replace(/\r\n?/g, '\n');
355 text = text.replace(/```([\w+-]*)\n([\s\S]*?)```/g, (_, lang, code) => token(`<pre data-language="${escapeHTML(lang)}"><code>${escapeHTML(code.trimEnd())}</code></pre>`));
356 text = text.replace(/\$\$([\s\S]*?)\$\$/g, (_, formula) => token(renderMath(formula.trim(), true)));
357 text = text.replace(/\\\[([\s\S]*?)\\\]/g, (_, formula) => token(renderMath(formula.trim(), true)));
358 text = text.replace(/\\\((.*?)\\\)/g, (_, formula) => token(renderMath(formula.trim(), false)));
359 text = text.replace(/(?<!\\)\$([^$\n]+?)\$/g, (_, formula) => token(renderMath(formula.trim(), false)));
360
361 const lines = text.split('\n');
362 const html = [];
363 let paragraph = [];
364 let list = null;
365 let listItemOpen = false;
366 const flushParagraph = () => {
367 if (paragraph.length) html.push(`<p>${inlineMarkdown(paragraph.join('\n')).replace(/\n/g, '<br>')}</p>`);
368 paragraph = [];
369 };
370 const closeListItem = () => {
371 if (listItemOpen) html.push('</li>');
372 listItemOpen = false;
373 };
374 const closeList = () => {
375 if (!list) return;
376 closeListItem();
377 html.push(`</${list}>`);
378 list = null;
379 };
380
381 for (let lineIndex = 0; lineIndex < lines.length; lineIndex += 1) {
382 const line = lines[lineIndex];
383 const alignments = lineIndex + 1 < lines.length ? tableDelimiter(lines[lineIndex + 1]) : null;
384 if (alignments) {
385 const header = tableCells(line);
386 if (header.length === alignments.length) {
387 flushParagraph(); closeList();
388 const rows = [];
389 lineIndex += 2;
390 while (lineIndex < lines.length && lines[lineIndex].trim() && lines[lineIndex].includes('|')) {
391 rows.push(tableCells(lines[lineIndex]));
392 lineIndex += 1;
393 }
394 html.push(renderTable(header, alignments, rows));
395 lineIndex -= 1;
396 continue;
397 }
398 }
399 const heading = line.match(/^(#{1,3})\s+(.+)/);
400 const bullet = line.match(/^\s*[-*+]\s+(.+)/);
401 const numbered = line.match(/^\s*(\d+)[.)]\s+(.+)/);
402 const quote = line.match(/^>\s?(.*)/);
403 const blockToken = line.match(/^\u0000(\d+)\u0000$/);
404 if (blockToken) { flushParagraph(); closeList(); html.push(stash[Number(blockToken[1])]); }
405 else if (heading) { flushParagraph(); closeList(); const level = heading[1].length; html.push(`<h${level}>${inlineMarkdown(heading[2])}</h${level}>`); }
406 else if (bullet || numbered) {
407 flushParagraph();
408 const wanted = bullet ? 'ul' : 'ol';
409 if (list !== wanted) {
410 closeList();
411 const start = numbered && numbered[1] !== '1' ? ` start="${Number(numbered[1])}"` : '';
412 html.push(`<${wanted}${start}>`);
413 list = wanted;
414 } else closeListItem();
415 html.push(`<li>${inlineMarkdown(bullet ? bullet[1] : numbered[2])}`);
416 listItemOpen = true;
417 } else if (quote) { flushParagraph(); closeList(); html.push(`<blockquote>${inlineMarkdown(quote[1])}</blockquote>`); }
418 else if (!line.trim()) {
419 flushParagraph();
420 let nextIndex = lineIndex + 1;
421 while (nextIndex < lines.length && !lines[nextIndex].trim()) nextIndex += 1;
422 const nextLine = lines[nextIndex] || '';
423 const continuesList = Boolean(list) && (/^\s+\S/.test(nextLine) || (list === 'ul'
424 ? /^\s*[-*+]\s+/.test(nextLine)
425 : /^\s*\d+[.)]\s+/.test(nextLine)));
426 if (!continuesList) closeList();
427 }
428 else if (list && /^\s+\S/.test(line)) html.push(`<p>${inlineMarkdown(line.trim())}</p>`);
429 else { closeList(); paragraph.push(line); }
430 }
431 flushParagraph(); closeList();
432 return html.join('').replace(/\u0000(\d+)\u0000/g, (_, index) => stash[Number(index)]);
433 }
434
435 function answerHTML(node) {
436 if (node.status === 'loading' && !node.answer) return '<span class="thinking" aria-label="Thinking"><i></i><i></i><i></i></span>';
437 if (node.status === 'error') return `<p class="error-text">${escapeHTML(node.error || 'The request failed.')}</p>`;
438 return markdown(node.answer || '');
439 }
440
441 function answerAttribution(node) {
442 if (!node.model || !node.provider || !node.answer) return '';
443 return `<div class="answer-attribution" title="Generated by ${escapeHTML(node.model)} through ${escapeHTML(providerLabel(node.provider))}"><span>${escapeHTML(node.model)}</span><small>${escapeHTML(providerLabel(node.provider))}</small></div>`;
444 }
445
446 function renderConversation({ scroll = false } = {}) {
447 const previousScroll = scroll ? null : { left: window.scrollX, top: window.scrollY };
448 const path = pathTo(state.activeId);
449 els.welcome.hidden = path.length > 0;
450 els.conversation.hidden = path.length === 0;
451 const fragment = document.createDocumentFragment();
452 for (const node of path) {
453 const article = document.createElement('article');
454 article.className = 'message';
455 article.dataset.nodeId = node.id;
456 article.innerHTML = `
457 <div class="question-row"><div class="question-bubble">${escapeHTML(node.question)}</div></div>
458 <div class="answer"><span class="answer-mark" aria-hidden="true">S</span><div class="answer-content"><div class="answer-body">${answerHTML(node)}</div>${answerAttribution(node)}</div></div>
459 <div class="answer-actions">
460 <button class="mini-action copy-answer" type="button">Copy answer</button>
461 <button class="mini-action branch-here" type="button">Branch here</button>
462 ${node.status === 'error' ? '<button class="mini-action retry-node" type="button">Retry</button>' : ''}
463 </div>`;
464 fragment.append(article);
465 }
466 els.conversation.replaceChildren(fragment);
467 if (previousScroll && (window.scrollX !== previousScroll.left || window.scrollY !== previousScroll.top)) {
468 window.scrollTo({ ...previousScroll, behavior: 'auto' });
469 }
470 renderBranchContext();
471 if (scroll && state.activeId) requestAnimationFrame(() => {
472 if (scroll === 'bottom') {
473 window.scrollTo({ top: document.documentElement.scrollHeight, behavior: 'smooth' });
474 return;
475 }
476 const targetId = state.activeId;
477 requestAnimationFrame(() => {
478 if (state.activeId !== targetId) return;
479 const message = $(`.message[data-node-id="${CSS.escape(targetId)}"]`, els.conversation);
480 if (!message) return;
481 const headerHeight = $('.topbar')?.getBoundingClientRect().height || 68;
482 const top = window.scrollY + message.getBoundingClientRect().top - headerHeight - 14;
483 window.scrollTo({ top: Math.max(0, top), behavior: 'smooth' });
484 });
485 });
486 }
487
488 function renderTree() {
489 const ids = new Set(state.nodes.map(node => node.id));
490 const grouped = new Map();
491 for (const node of state.nodes) {
492 const parentId = node.parentId && ids.has(node.parentId) ? node.parentId : null;
493 if (!grouped.has(parentId)) grouped.set(parentId, []);
494 grouped.get(parentId).push(node);
495 }
496 const roots = grouped.get(null) || [];
497 const activePath = new Set(pathTo(state.activeId).map(node => node.id));
498 const collapsed = new Set(state.collapsedIds);
499 const build = nodes => {
500 const ul = document.createElement('ul');
501 for (const node of nodes) {
502 const li = document.createElement('li');
503 li.dataset.nodeId = node.id;
504 const wrap = document.createElement('div');
505 wrap.className = 'tree-node-wrap';
506 const button = document.createElement('button');
507 button.type = 'button';
508 button.className = `tree-node${node.id === state.activeId ? ' active' : ''}${activePath.has(node.id) ? ' on-path' : ''}`;
509 button.dataset.nodeId = node.id;
510 button.setAttribute('aria-current', node.id === state.activeId ? 'true' : 'false');
511 const children = grouped.get(node.id) || [];
512 const isCollapsed = children.length > 0 && collapsed.has(node.id);
513 const toggle = document.createElement(children.length ? 'button' : 'span');
514 toggle.className = children.length ? 'toggle-subtree' : 'toggle-placeholder';
515 if (children.length) {
516 toggle.type = 'button';
517 toggle.dataset.nodeId = node.id;
518 toggle.setAttribute('aria-label', `${isCollapsed ? 'Expand' : 'Collapse'} branch: ${node.question}`);
519 toggle.setAttribute('aria-expanded', String(!isCollapsed));
520 toggle.textContent = isCollapsed ? '▸' : '▾';
521 }
522 button.innerHTML = `<span class="node-dot">${node.status === 'loading' ? '…' : (activePath.has(node.id) ? '●' : '○')}</span><span class="node-copy"><span class="node-title">${escapeHTML(node.question)}</span><span class="node-meta">${children.length} ${children.length === 1 ? 'reply' : 'branches'}${isCollapsed ? ' · hidden' : ''}</span></span>`;
523 wrap.append(toggle, button);
524 li.append(wrap);
525 if (children.length && !isCollapsed) li.append(build(children));
526 ul.append(li);
527 }
528 return ul;
529 };
530 els.tree.replaceChildren(build(roots));
531 els.mapEmpty.hidden = state.nodes.length > 0;
532 els.tree.hidden = state.nodes.length === 0;
533 els.nodeCount.textContent = String(state.nodes.length);
534 let branchCount = 0;
535 for (const children of grouped.values()) branchCount += Math.max(0, children.length - 1);
536 els.branchCount.textContent = String(branchCount);
537 }
538
539 function revealNode(map, nodeId) {
540 if (!nodeId) return;
541 const hidden = new Set(map.collapsedIds);
542 for (const node of pathTo(nodeId, map).slice(0, -1)) hidden.delete(node.id);
543 map.collapsedIds = [...hidden];
544 }
545
546 function toggleSubtree(nodeId, force) {
547 if (!nodeById(nodeId)) return;
548 const collapsed = new Set(state.collapsedIds);
549 const shouldCollapse = force ?? !collapsed.has(nodeId);
550 if (shouldCollapse) collapsed.add(nodeId);
551 else collapsed.delete(nodeId);
552 state.collapsedIds = [...collapsed];
553 persistSoon();
554 renderTree();
555 }
556
557 function setAllSubtrees(collapsed) {
558 if (!collapsed) state.collapsedIds = [];
559 else {
560 const parents = new Set(state.nodes.map(node => node.parentId).filter(Boolean));
561 state.collapsedIds = [...parents];
562 }
563 persistSoon();
564 renderTree();
565 }
566
567 function updateTreeZoom(delta = 0) {
568 treeZoom = Math.round(Math.max(.8, Math.min(1.4, treeZoom + delta)) * 10) / 10;
569 els.tree.style.fontSize = `${.76 * treeZoom}rem`;
570 els.tree.style.setProperty('--tree-indent', `${20 * treeZoom}px`);
571 els.tree.style.setProperty('--tree-dot-size', `${17 * treeZoom}px`);
572 els.tree.style.setProperty('--tree-node-pad-y', `${8 * treeZoom}px`);
573 els.treeZoom.textContent = `${Math.round(treeZoom * 100)}%`;
574 try { localStorage.setItem(TREE_ZOOM_KEY, String(treeZoom)); } catch {}
575 }
576
577 function renderBranchContext() {
578 const active = nodeById(state.activeId);
579 const latest = state.nodes.at(-1);
580 const branching = active && latest && active.id !== latest.id;
581 els.branchContext.hidden = !branching;
582 if (branching) els.branchLabel.textContent = active.question;
583 }
584
585 function renderHistory() {
586 const maps = workspace.maps
587 .filter(map => map.nodes.length > 0 || map.attachments.length > 0)
588 .sort((a, b) => b.updatedAt - a.updatedAt);
589 const fragment = document.createDocumentFragment();
590 for (const map of maps) {
591 const row = document.createElement('div');
592 row.className = 'history-row';
593 const button = document.createElement('button');
594 button.type = 'button';
595 button.className = `history-item${map.id === workspace.activeMapId ? ' active' : ''}`;
596 button.dataset.mapId = map.id;
597 button.setAttribute('aria-current', map.id === workspace.activeMapId ? 'page' : 'false');
598 const date = new Date(map.updatedAt).toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
599 const fileMeta = map.attachments.length ? ` · ${map.attachments.length} file${map.attachments.length === 1 ? '' : 's'}` : '';
600 button.innerHTML = `<span class="history-glyph" aria-hidden="true">${map.nodes.length || map.attachments.length ? '◇' : '＋'}</span><span class="history-copy"><span class="history-title">${escapeHTML(map.title)}</span><span class="history-meta">${map.nodes.length} ${map.nodes.length === 1 ? 'node' : 'nodes'}${fileMeta} · ${date}</span></span>`;
601 const rename = document.createElement('button');
602 rename.type = 'button';
603 rename.className = 'rename-map';
604 rename.dataset.mapId = map.id;
605 rename.setAttribute('aria-label', `Rename conversation: ${map.title}`);
606 rename.title = 'Rename this conversation';
607 rename.textContent = '✎';
608 const remove = document.createElement('button');
609 remove.type = 'button';
610 remove.className = 'delete-map';
611 remove.dataset.mapId = map.id;
612 remove.setAttribute('aria-label', `Delete conversation: ${map.title}`);
613 remove.title = 'Delete this conversation';
614 remove.textContent = '×';
615 row.append(button, rename, remove);
616 fragment.append(row);
617 }
618 els.historyList.replaceChildren(fragment);
619 els.historyEmpty.hidden = maps.length > 0;
620 els.historyList.hidden = maps.length === 0;
621 if (els.conversationSearch.value.trim()) renderSearchResults();
622 else els.searchResults.hidden = true;
623 }
624
625 function buildSearchIndex() {
626 const entries = [];
627 for (const map of workspace.maps) {
628 if (!map.nodes.length && !map.attachments.length) continue;
629 entries.push({ mapId: map.id, nodeId: null, kind: 'Map', label: map.title, fields: [map.title] });
630 for (const node of map.nodes) {
631 entries.push({
632 mapId: map.id, nodeId: node.id, kind: 'Node', label: node.question,
633 fields: [node.question, node.answer || ''], mapTitle: map.title
634 });
635 }
636 for (const file of map.attachments) {
637 entries.push({ mapId: map.id, nodeId: null, kind: file.kind === 'markdown' ? 'Markdown' : 'PDF', label: file.name, fields: [file.name], mapTitle: map.title });
638 }
639 }
640 searchIndex = entries;
641 return entries;
642 }
643
644 function searchExcerpt(fields, expression) {
645 for (const field of fields) {
646 const source = String(field || '').replace(/\s+/g, ' ').trim();
647 const index = source.search(expression);
648 if (index < 0) continue;
649 const start = Math.max(0, index - 45);
650 const end = Math.min(source.length, index + 115);
651 return `${start ? '…' : ''}${source.slice(start, end)}${end < source.length ? '…' : ''}`;
652 }
653 return '';
654 }
655
656 function renderSearchResults() {
657 const query = els.conversationSearch.value.trim();
658 if (!query) {
659 els.searchResults.hidden = true;
660 els.historyList.hidden = false;
661 els.historyEmpty.hidden = workspace.maps.some(map => map.nodes.length || map.attachments.length);
662 return;
663 }
664 const expression = new RegExp(query.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'i');
665 const matches = [];
666 for (const entry of searchIndex || buildSearchIndex()) {
667 const excerpt = searchExcerpt(entry.fields, expression);
668 if (!excerpt) continue;
669 matches.push({ ...entry, excerpt });
670 if (matches.length >= 60) break;
671 }
672 els.searchResults.innerHTML = matches.length ? matches.map(entry => `
673 <button class="search-result" type="button" data-map-id="${escapeHTML(entry.mapId)}"${entry.nodeId ? ` data-node-id="${escapeHTML(entry.nodeId)}"` : ''}>
674 <span class="search-result-top"><strong>${escapeHTML(entry.label)}</strong><small>${escapeHTML(entry.kind)} · ${escapeHTML(entry.mapTitle || entry.label)}</small></span>
675 <span class="search-excerpt">${escapeHTML(entry.excerpt)}</span>
676 </button>`).join('') : `<p class="search-empty">No results for “${escapeHTML(query)}”.</p>`;
677 els.searchResults.hidden = false;
678 els.historyList.hidden = true;
679 els.historyEmpty.hidden = true;
680 }
681
682 function clearSearch() {
683 clearTimeout(searchTimer);
684 els.conversationSearch.value = '';
685 renderSearchResults();
686 renderHistory();
687 }
688
689 function formatFileSize(bytes) {
690 if (!bytes) return '';
691 if (bytes < 1024 * 1024) return `${Math.max(1, Math.round(bytes / 1024))} KB`;
692 return `${(bytes / (1024 * 1024)).toFixed(bytes < 10 * 1024 * 1024 ? 1 : 0)} MB`;
693 }
694
695 function renderAttachments() {
696 const fragment = document.createDocumentFragment();
697 for (const file of state.attachments) {
698 const chip = document.createElement('span');
699 chip.className = 'attachment-chip';
700 const available = file.provider === settings.provider;
701 chip.classList.toggle('inactive-provider', !available);
702 chip.title = `${file.name}${file.size ? ` · ${formatFileSize(file.size)}` : ''} · Uploaded to ${providerLabel(file.provider)}${available ? ' · Included with every question' : ' · Not sent with the selected provider'}`;
703 const badge = file.kind === 'markdown' ? 'MD' : 'PDF';
704 chip.innerHTML = `<span class="attachment-badge${file.kind === 'markdown' ? ' md' : ''}" aria-hidden="true">${badge}</span><span class="attachment-name">${escapeHTML(file.name)}</span>${available ? '' : `<span class="attachment-provider">${escapeHTML(providerLabel(file.provider))}</span>`}<button class="remove-attachment" type="button" data-file-id="${escapeHTML(file.id)}" aria-label="Remove ${escapeHTML(file.name)} from this map">×</button>`;
705 fragment.append(chip);
706 }
707 if (uploadingFiles && state.id === uploadTargetMapId) {
708 const status = document.createElement('span');
709 status.className = 'attachment-chip upload-status';
710 status.innerHTML = '<span class="upload-spinner" aria-hidden="true"></span> Uploading…';
711 fragment.append(status);
712 }
713 els.attachments.replaceChildren(fragment);
714 els.attachments.hidden = !state.attachments.length && !(uploadingFiles && state.id === uploadTargetMapId);
715 els.uploadFile.disabled = uploadingFiles || Boolean(activeRequest);
716 }
717
718 function renderAll(options) { renderConversation(options); renderTree(); renderHistory(); renderAttachments(); }
719
720 function updateStreamedNode(node) {
721 if (state.activeId !== node.id || !state.nodes.includes(node)) return;
722 const body = $(`.message[data-node-id="${CSS.escape(node.id)}"] .answer-body`, els.conversation);
723 if (body) {
724 const previousScroll = { left: window.scrollX, top: window.scrollY };
725 body.innerHTML = answerHTML(node);
726 if (window.scrollX !== previousScroll.left || window.scrollY !== previousScroll.top) {
727 window.scrollTo({ ...previousScroll, behavior: 'auto' });
728 }
729 }
730 }
731
732 function inputFor(map, parentId, question, provider = settings.provider) {
733 const messages = [];
734 for (const node of pathTo(parentId, map)) {
735 if (provider === 'openrouter') {
736 messages.push({ type: 'message', role: 'user', content: [{ type: 'input_text', text: node.question }] });
737 if (node.answer) messages.push({
738 type: 'message', role: 'assistant', id: `msg_${String(node.id).replace(/[^a-zA-Z0-9_-]/g, '')}`,
739 status: 'completed', content: [{ type: 'output_text', text: node.answer, annotations: [] }]
740 });
741 } else {
742 messages.push({ role: 'user', content: node.question });
743 if (node.answer) messages.push({ role: 'assistant', content: node.answer });
744 }
745 }
746 const content = map.attachments
747 .filter(file => file.provider === provider)
748 .map(file => file.kind === 'markdown'
749 ? { type: 'input_file', file_id: file.id }
750 : { type: 'input_file', file_id: file.id, detail: file.detail || 'low' });
751 content.push({ type: 'input_text', text: question });
752 const structured = provider === 'openrouter' || content.length > 1;
753 messages.push(structured ? { type: 'message', role: 'user', content } : { role: 'user', content: question });
754 return messages;
755 }
756
757 function filesEndpoint(apiUrl = settings.apiUrl) {
758 const url = new URL(apiUrl);
759 if (!/\/responses\/?$/.test(url.pathname)) throw new Error('The configured endpoint is not a Responses API URL, so its Files endpoint cannot be derived.');
760 url.pathname = url.pathname.replace(/\/responses\/?$/, '/files');
761 url.search = '';
762 url.hash = '';
763 return url.toString();
764 }
765
766 async function uploadFiles(fileList) {
767 const files = [...fileList];
768 if (!files.length) return;
769 if (activeRequest || uploadingFiles) { showToast('Finish the current operation first'); return; }
770 if (!settings.apiKey) { openSettings(); showToast(`Add a ${providerLabel()} API key before uploading`); return; }
771
772 const valid = files.filter(file => /\.(pdf|md)$/i.test(file.name));
773 if (valid.length !== files.length) { showToast('Only PDF and Markdown (.md) files can be added'); return; }
774 if (valid.some(file => file.size >= FILE_REQUEST_LIMIT)) { showToast('Each file must be smaller than 50 MB'); return; }
775 const existingBytes = state.attachments.filter(file => file.provider === settings.provider).reduce((total, file) => total + file.size, 0);
776 const addedBytes = valid.reduce((total, file) => total + file.size, 0);
777 if (existingBytes + addedBytes >= FILE_REQUEST_LIMIT) { showToast('Files in one map must total less than 50 MB'); return; }
778
779 const targetMap = state;
780 const connection = { ...settings };
781 uploadingFiles = true;
782 uploadTargetMapId = targetMap.id;
783 renderAttachments();
784 let uploaded = 0;
785 try {
786 const endpoint = filesEndpoint(connection.apiUrl);
787 for (const file of valid) {
788 const form = new FormData();
789 if (connection.provider === 'openai') form.append('purpose', 'user_data');
790 form.append('file', file, file.name);
791 const response = await fetch(endpoint, {
792 method: 'POST', headers: requestHeaders(false, connection), body: form
793 });
794 if (!response.ok) {
795 let message = `File upload failed (${response.status})`;
796 try { const data = await response.json(); message = data.error?.message || message; } catch {}
797 throw new Error(message);
798 }
799 const data = await response.json();
800 if (!data.id) throw new Error('The Files API did not return a file ID.');
801 targetMap.attachments.push({
802 id: String(data.id), name: String(data.filename || file.name),
803 size: Number(data.bytes ?? data.size_bytes) || file.size, createdAt: Date.now(), detail: 'low',
804 kind: file.name.toLowerCase().endsWith('.md') ? 'markdown' : 'pdf',
805 provider: connection.provider
806 });
807 uploaded += 1;
808 touchMap(targetMap);
809 persistNow();
810 if (state === targetMap) renderAll();
811 }
812 showToast(`${uploaded} file${uploaded === 1 ? '' : 's'} added to this map`);
813 } catch (error) {
814 showToast(error.message || 'File upload failed');
815 } finally {
816 uploadingFiles = false;
817 uploadTargetMapId = null;
818 els.fileInput.value = '';
819 renderAll();
820 }
821 }
822
823 function removeAttachment(fileId) {
824 const file = state.attachments.find(candidate => candidate.id === fileId);
825 if (!file) return;
826 if (!confirm(`Remove “${file.name}” from this map? The uploaded copy is not deleted from the API provider.`)) return;
827 state.attachments = state.attachments.filter(candidate => candidate.id !== fileId);
828 touchMap();
829 persistNow();
830 renderAll();
831 showToast('File removed from this map');
832 }
833
834 async function ask(question, parentId = state.activeId) {
835 question = question.trim();
836 if (!question) return;
837 if (activeRequest) { showToast('Stop or finish the current response first'); return; }
838 if (uploadingFiles) { showToast('Wait for the file upload to finish'); return; }
839 if (!settings.apiKey) { openSettings(); showToast(`Add a ${providerLabel()} API key to begin`); return; }
840
841 const requestMap = state;
842 const connection = { ...settings };
843 const node = {
844 id: uid(), parentId: parentId || null, question, answer: '', status: 'loading', createdAt: Date.now(),
845 provider: connection.provider, model: connection.model
846 };
847 requestMap.nodes.push(node);
848 requestMap.activeId = node.id;
849 revealNode(requestMap, node.id);
850 refreshMapTitle(requestMap);
851 touchMap(requestMap);
852 persistSoon();
853 renderAll({ scroll: true });
854 setBusy(true);
855 const controller = new AbortController();
856 activeRequest = controller;
857 let completedUsage = null;
858
859 try {
860 const response = await fetch(connection.apiUrl, {
861 method: 'POST',
862 headers: requestHeaders(true, connection),
863 body: JSON.stringify({ model: connection.model, instructions: connection.systemPrompt, input: inputFor(requestMap, parentId, question, connection.provider), stream: true }),
864 signal: controller.signal
865 });
866 if (!response.ok) {
867 let message = `API request failed (${response.status})`;
868 try { const data = await response.json(); message = data.error?.message || message; } catch {}
869 throw new Error(message);
870 }
871 if (!response.body) throw new Error('This browser did not provide a streaming response body.');
872 await consumeSSE(response.body, event => {
873 if (event.type === 'response.output_text.delta' || event.type === 'response.content_part.delta') node.answer += event.delta || '';
874 if (event.type === 'response.completed' || event.type === 'response.done') {
875 node.model = String(event.response?.model || node.model);
876 completedUsage = event.response?.usage || event.usage || completedUsage;
877 }
878 if (event.type === 'response.failed') throw new Error(event.response?.error?.message || 'The model response failed.');
879 }, () => updateStreamedNode(node));
880 node.status = 'complete';
881 if (completedUsage) await recordUsage(node.id, node.model || connection.model, connection.apiUrl, completedUsage, connection.provider);
882 } catch (error) {
883 node.status = 'error';
884 node.error = error.name === 'AbortError' ? 'Response stopped.' : error.message;
885 } finally {
886 activeRequest = null;
887 touchMap(requestMap);
888 persistSoon();
889 setBusy(false);
890 renderAll();
891 }
892 }
893
894 async function consumeSSE(stream, onEvent, onPaint) {
895 const reader = stream.getReader();
896 const decoder = new TextDecoder();
897 let buffer = '';
898 let paintQueued = false;
899 const queuePaint = () => {
900 if (paintQueued) return;
901 paintQueued = true;
902 setTimeout(() => { paintQueued = false; onPaint(); }, 70);
903 };
904 const processBlock = block => {
905 for (const line of block.split(/\r?\n/)) {
906 if (!line.startsWith('data:')) continue;
907 const data = line.slice(5).trim();
908 if (!data || data === '[DONE]') continue;
909 onEvent(JSON.parse(data));
910 queuePaint();
911 }
912 };
913 while (true) {
914 const { done, value } = await reader.read();
915 buffer += decoder.decode(value || new Uint8Array(), { stream: !done });
916 const blocks = buffer.split(/\r?\n\r?\n/);
917 buffer = blocks.pop() || '';
918 for (const block of blocks) processBlock(block);
919 if (done) break;
920 }
921 if (buffer.trim()) processBlock(buffer);
922 onPaint();
923 }
924
925 function setBusy(busy) {
926 els.prompt.disabled = busy;
927 els.send.textContent = busy ? '■' : '↑';
928 els.send.setAttribute('aria-label', busy ? 'Stop response' : 'Send message');
929 els.uploadFile.disabled = busy || uploadingFiles;
930 }
931
932 function openSettings() {
933 settingsDraft = structuredClone({
934 activeModelId: settings.activeModelId, apiKeys: settings.apiKeys, models: settings.models
935 });
936 els.openaiApiKey.value = settingsDraft.apiKeys.openai || '';
937 els.openrouterApiKey.value = settingsDraft.apiKeys.openrouter || '';
938 fillModelOptions(els.openaiModelOptions, PROVIDERS.openai.models);
939 fillModelOptions(els.openrouterModelOptions, PROVIDERS.openrouter.models);
940 renderModelCards();
941 els.systemPrompt.value = settings.systemPrompt;
942 els.settings.showModal();
943 setTimeout(() => (settings.provider === 'openrouter' ? els.openrouterApiKey : els.openaiApiKey).focus(), 50);
944 }
945
946 function fillModelOptions(list, models) {
947 list.replaceChildren(...models.map(model => Object.assign(document.createElement('option'), { value: model })));
948 }
949
950 function renderModelCards() {
951 if (!settingsDraft) return;
952 els.modelConfigs.innerHTML = settingsDraft.models.map((connection, index) => {
953 const defaults = PROVIDERS[connection.provider];
954 const active = connection.id === settingsDraft.activeModelId;
955 return `<section class="model-config${active ? ' active' : ''}" data-model-card data-model-id="${escapeHTML(connection.id)}" data-provider="${connection.provider}">
956 <div class="model-config-heading">
957 <div><span class="provider-logo">${connection.provider === 'openrouter' ? 'OR' : 'OAI'}</span><h4>Model ${index + 1}</h4></div>
958 <label class="default-model"><input class="default-model-radio" type="radio" name="default-model" value="${escapeHTML(connection.id)}"${active ? ' checked' : ''}> Use by default</label>
959 </div>
960 <div class="model-fields">
961 <label>Provider
962 <select class="model-provider">
963 <option value="openai"${connection.provider === 'openai' ? ' selected' : ''}>OpenAI</option>
964 <option value="openrouter"${connection.provider === 'openrouter' ? ' selected' : ''}>OpenRouter</option>
965 </select>
966 </label>
967 <label>Model
968 <input class="model-name-input" type="text" value="${escapeHTML(connection.model)}" placeholder="${escapeHTML(defaults.model)}" list="${connection.provider}-model-options" spellcheck="false" required>
969 </label>
970 </div>
971 <details class="provider-advanced">
972 <summary>Endpoint</summary>
973 <label>Responses API endpoint
974 <input class="model-api-url" type="url" value="${escapeHTML(connection.apiUrl)}" spellcheck="false" required>
975 </label>
976 </details>
977 <button class="remove-model" type="button"${settingsDraft.models.length === 1 ? ' disabled' : ''} aria-label="Remove model ${index + 1}">Remove model</button>
978 </section>`;
979 }).join('');
980 }
981
982 function captureSettingsForm() {
983 if (!settingsDraft) return;
984 settingsDraft.apiKeys = {
985 openai: els.openaiApiKey.value.trim(), openrouter: els.openrouterApiKey.value.trim()
986 };
987 settingsDraft.models = [...els.modelConfigs.querySelectorAll('[data-model-card]')].map(card => {
988 const provider = $('.model-provider', card).value;
989 return {
990 id: card.dataset.modelId, provider,
991 model: $('.model-name-input', card).value.trim() || PROVIDERS[provider].model,
992 apiUrl: $('.model-api-url', card).value.trim() || PROVIDERS[provider].apiUrl
993 };
994 });
995 settingsDraft.activeModelId = $('input[name="default-model"]:checked', els.modelConfigs)?.value
996 || settingsDraft.models[0]?.id;
997 }
998
999 function updateModelCardSelection() {
1000 const selected = $('input[name="default-model"]:checked', els.modelConfigs)?.value;
1001 els.modelConfigs.querySelectorAll('[data-model-card]').forEach(card => {
1002 card.classList.toggle('active', card.dataset.modelId === selected);
1003 });
1004 }
1005
1006 function showToast(message) {
1007 els.toast.textContent = message;
1008 els.toast.classList.add('show');
1009 clearTimeout(toastTimer);
1010 toastTimer = setTimeout(() => els.toast.classList.remove('show'), 2200);
1011 }
1012
1013 function updateKeyStatus() {
1014 els.keyStatus.classList.toggle('ready', Boolean(settings.apiKey));
1015 els.activeModel.textContent = settings.model;
1016 els.activeProvider.textContent = providerLabel();
1017 els.activeConnection.title = `${providerLabel()} · ${settings.model} — open settings`;
1018 els.activeConnection.setAttribute('aria-label', `Current model: ${settings.model} through ${providerLabel()}. Open API settings`);
1019 const button = $('#open-settings');
1020 button.title = `${providerLabel()} · ${settings.model}`;
1021 button.setAttribute('aria-label', `API settings — ${providerLabel()}, ${settings.model}`);
1022 }
1023
1024 function updateThemeButton() {
1025 const dark = document.documentElement.dataset.theme === 'dark';
1026 const button = $('#theme-toggle');
1027 button.querySelector('span').textContent = dark ? '☀' : '☾';
1028 button.setAttribute('aria-label', `Switch to ${dark ? 'light' : 'dark'} theme`);
1029 button.title = `Switch to ${dark ? 'light' : 'dark'} theme`;
1030 }
1031
1032 function toggleTheme() {
1033 const next = document.documentElement.dataset.theme === 'dark' ? 'light' : 'dark';
1034 document.documentElement.dataset.theme = next;
1035 try { localStorage.setItem(THEME_KEY, next); } catch {}
1036 updateThemeButton();
1037 }
1038
1039 function priceForModel(model) {
1040 const key = String(model || '').toLowerCase();
1041 return MODEL_PRICES.find(price => price.match.test(key)) || null;
1042 }
1043
1044 function isOpenAIEndpoint(apiUrl) {
1045 try { return new URL(apiUrl).hostname === 'api.openai.com'; }
1046 catch { return false; }
1047 }
1048
1049 async function openRouterPriceForModel(model) {
1050 const key = String(model || '').trim();
1051 if (!key.includes('/')) return null;
1052 const cached = openRouterPrices[key];
1053 const validCached = cached && Number.isFinite(Number(cached.input)) && Number.isFinite(Number(cached.output));
1054 if (validCached && Date.now() - Number(cached.checkedAt) < PRICE_CACHE_TTL) return cached;
1055 try {
1056 const path = key.split('/').map(encodeURIComponent).join('/');
1057 const response = await fetch(`https://openrouter.ai/api/v1/model/${path}`, {
1058 headers: { 'Accept': 'application/json' }
1059 });
1060 if (!response.ok) return validCached ? cached : null;
1061 const pricing = (await response.json()).data?.pricing;
1062 const prompt = pricing?.prompt == null ? NaN : Number(pricing.prompt);
1063 const completion = pricing?.completion == null ? NaN : Number(pricing.completion);
1064 const cacheRead = pricing?.input_cache_read == null ? NaN : Number(pricing.input_cache_read);
1065 if (!Number.isFinite(prompt) || !Number.isFinite(completion)) return validCached ? cached : null;
1066 const price = {
1067 input: prompt * 1_000_000,
1068 cached: (Number.isFinite(cacheRead) ? cacheRead : prompt) * 1_000_000,
1069 output: completion * 1_000_000,
1070 request: Number(pricing?.request) || 0,
1071 checkedAt: Date.now(),
1072 source: 'openrouter'
1073 };
1074 openRouterPrices[key] = price;
1075 persistOpenRouterPrices();
1076 return price;
1077 } catch { return validCached ? cached : null; }
1078 }
1079
1080 async function recordUsage(nodeId, model, apiUrl, rawUsage, provider) {
1081 if (usageRecords.some(record => record.nodeId === nodeId)) return;
1082 const inputTokens = Number(rawUsage.input_tokens) || 0;
1083 const outputTokens = Number(rawUsage.output_tokens) || 0;
1084 const cachedTokens = Math.min(inputTokens, Number(rawUsage.input_tokens_details?.cached_tokens) || 0);
1085 const totalTokens = Number(rawUsage.total_tokens) || inputTokens + outputTokens;
1086 const price = provider === 'openrouter'
1087 ? await openRouterPriceForModel(model)
1088 : (isOpenAIEndpoint(apiUrl) ? priceForModel(model) : null);
1089 const costUSD = price
1090 ? ((((inputTokens - cachedTokens) * price.input) + (cachedTokens * price.cached) + (outputTokens * price.output)) / 1_000_000) + (Number(price.request) || 0)
1091 : null;
1092 usageRecords.push({
1093 id: uid(), nodeId, timestamp: Date.now(), model: String(model || 'unknown'),
1094 inputTokens, cachedTokens, outputTokens, totalTokens, costUSD,
1095 rates: price ? {
1096 input: price.input, cached: price.cached, output: price.output,
1097 request: Number(price.request) || 0, source: price.source || 'openai', checkedAt: price.checkedAt || Date.now()
1098 } : null
1099 });
1100 // Keep bounded history while retaining roughly a year of normal personal use.
1101 usageRecords = usageRecords.slice(-2000);
1102 try { localStorage.setItem(USAGE_KEY, JSON.stringify(usageRecords)); }
1103 catch { showToast('Usage was returned, but local usage history is full'); }
1104 updateUsageButton();
1105 }
1106
1107 function currentMonthRecords() {
1108 const now = new Date();
1109 return usageRecords.filter(record => {
1110 const date = new Date(record.timestamp);
1111 return date.getFullYear() === now.getFullYear() && date.getMonth() === now.getMonth();
1112 });
1113 }
1114
1115 function sum(records, key) { return records.reduce((total, record) => total + (Number(record[key]) || 0), 0); }
1116
1117 function formatTokens(value, compact = false) {
1118 const number = Number(value) || 0;
1119 if (!compact || number < 1000) return Math.round(number).toLocaleString();
1120 if (number < 1_000_000) return `${(number / 1000).toFixed(number < 10_000 ? 1 : 0)}K`;
1121 return `${(number / 1_000_000).toFixed(number < 10_000_000 ? 1 : 0)}M`;
1122 }
1123
1124 function formatCost(value) {
1125 if (!Number.isFinite(value)) return 'Unpriced';
1126 if (value > 0 && value < .01) return '<$0.01';
1127 return value.toLocaleString(undefined, { style: 'currency', currency: 'USD', minimumFractionDigits: 2, maximumFractionDigits: value < 1 ? 4 : 2 });
1128 }
1129
1130 function updateUsageButton() {
1131 const total = sum(currentMonthRecords(), 'totalTokens');
1132 els.monthTokens.textContent = formatTokens(total, true);
1133 const label = `${formatTokens(total)} tokens tracked this month`;
1134 $('#open-usage').title = label;
1135 $('#open-usage').setAttribute('aria-label', `${label}. Open API usage details`);
1136 }
1137
1138 function usageRowsByModel(records) {
1139 const groups = new Map();
1140 for (const record of records) {
1141 const model = String(record.model || 'unknown');
1142 if (!groups.has(model)) groups.set(model, { model, totalTokens: 0, costUSD: 0, unpriced: 0 });
1143 const group = groups.get(model);
1144 group.totalTokens += Number(record.totalTokens) || 0;
1145 if (Number.isFinite(record.costUSD)) group.costUSD += record.costUSD;
1146 else group.unpriced += 1;
1147 }
1148 return [...groups.values()].sort((a, b) => b.totalTokens - a.totalTokens);
1149 }
1150
1151 function renderUsage() {
1152 const records = currentMonthRecords().sort((a, b) => b.timestamp - a.timestamp);
1153 const totalCost = records.reduce((total, record) => total + (Number.isFinite(record.costUSD) ? record.costUSD : 0), 0);
1154 const unpriced = records.filter(record => !Number.isFinite(record.costUSD)).length;
1155 els.usageMonth.textContent = new Date().toLocaleDateString(undefined, { month: 'long', year: 'numeric' });
1156 els.usageTotal.textContent = formatTokens(sum(records, 'totalTokens'));
1157 els.usageCost.textContent = records.length && unpriced === records.length
1158 ? 'Unpriced'
1159 : `${formatCost(totalCost)}${unpriced ? ' +' : ''}`;
1160 els.usageRequests.textContent = formatTokens(records.length);
1161 els.usageInput.textContent = formatTokens(sum(records, 'inputTokens'));
1162 els.usageCached.textContent = formatTokens(sum(records, 'cachedTokens'));
1163 els.usageOutput.textContent = formatTokens(sum(records, 'outputTokens'));
1164
1165 const groups = usageRowsByModel(records);
1166 els.usageModels.innerHTML = groups.length ? groups.map(group => `
1167 <div class="usage-row">
1168 <span class="model-name" title="${escapeHTML(group.model)}">${escapeHTML(group.model)}</span>
1169 <span class="row-tokens">${formatTokens(group.totalTokens)} tokens</span>
1170 <span class="row-cost">${group.unpriced ? 'Partly unpriced' : formatCost(group.costUSD)}</span>
1171 </div>`).join('') : '<p class="usage-empty">No tracked requests this month.</p>';
1172
1173 els.usageRecent.innerHTML = records.length ? records.slice(0, 12).map(record => `
1174 <div class="usage-row">
1175 <span class="model-name">${new Date(record.timestamp).toLocaleString(undefined, { month: 'short', day: 'numeric', hour: 'numeric', minute: '2-digit' })}</span>
1176 <span class="row-tokens">${formatTokens(record.totalTokens)} tokens</span>
1177 <span class="row-cost">${formatCost(record.costUSD)}</span>
1178 </div>`).join('') : '<p class="usage-empty">Completed requests will appear here.</p>';
1179
1180 els.usageNote.textContent = unpriced
1181 ? `${unpriced} request${unpriced === 1 ? '' : 's'} could not be estimated because its model price could not be resolved.`
1182 : 'Estimates use the rate recorded when each request completed: the local OpenAI table or OpenRouter\'s model-pricing API.';
1183 }
1184
1185 function openUsage() {
1186 renderUsage();
1187 const openRouter = settings.provider === 'openrouter';
1188 els.usageDashboard.href = openRouter ? 'https://openrouter.ai/activity' : 'https://platform.openai.com/usage';
1189 els.usageDashboard.textContent = `${openRouter ? 'OpenRouter' : 'OpenAI'} dashboard ↗`;
1190 els.usageDialog.showModal();
1191 }
1192
1193 function createNewMap() {
1194 const existingBlank = workspace.maps.find(map => map.nodes.length === 0 && map.attachments.length === 0);
1195 const map = existingBlank || blankMap();
1196 if (!existingBlank) workspace.maps.push(map);
1197 workspace.activeMapId = map.id;
1198 state = map;
1199 els.conversationSearch.value = '';
1200 persistNow();
1201 renderAll();
1202 closeHistoryOnSmallScreen();
1203 window.scrollTo({ top: 0, behavior: 'smooth' });
1204 els.prompt.focus();
1205 }
1206
1207 function switchMap(mapId, nodeId = null) {
1208 const map = workspace.maps.find(candidate => candidate.id === mapId);
1209 if (!map) { closeHistoryOnSmallScreen(); return; }
1210 workspace.activeMapId = map.id;
1211 state = map;
1212 state.activeId = nodeId && nodeById(nodeId, state) ? nodeId : (state.nodes.at(-1)?.id || null);
1213 revealNode(state, state.activeId);
1214 persistSoon();
1215 hideSelectionMenu();
1216 renderAll({ scroll: state.activeId ? (nodeId ? true : 'bottom') : false });
1217 closeHistoryOnSmallScreen();
1218 }
1219
1220 function activateNode(nodeId, scroll = true) {
1221 if (!nodeById(nodeId)) return;
1222 state.activeId = nodeId;
1223 revealNode(state, nodeId);
1224 persistSoon();
1225 renderAll({ scroll });
1226 document.body.classList.remove('map-open');
1227 }
1228
1229 function visibleTreeNodeIds() {
1230 return [...els.tree.querySelectorAll('.tree-node')].map(button => button.dataset.nodeId);
1231 }
1232
1233 function moveVisibleNode(offset) {
1234 const ids = visibleTreeNodeIds();
1235 if (!ids.length) return;
1236 const current = Math.max(0, ids.indexOf(state.activeId));
1237 activateNode(ids[Math.max(0, Math.min(ids.length - 1, current + offset))]);
1238 }
1239
1240 function moveMap(offset) {
1241 const maps = workspace.maps
1242 .filter(map => map.nodes.length || map.attachments.length)
1243 .sort((a, b) => b.updatedAt - a.updatedAt);
1244 if (!maps.length) return;
1245 const current = Math.max(0, maps.findIndex(map => map.id === state.id));
1246 switchMap(maps[Math.max(0, Math.min(maps.length - 1, current + offset))].id);
1247 }
1248
1249 function focusConversationSearch() {
1250 document.body.classList.remove('history-collapsed', 'map-open');
1251 if (matchMedia('(max-width: 1100px)').matches) document.body.classList.add('history-open');
1252 updateHistoryToggle();
1253 els.conversationSearch.focus();
1254 els.conversationSearch.select();
1255 }
1256
1257 function handleVimNavigation(event) {
1258 if (event.defaultPrevented || event.ctrlKey || event.metaKey || event.altKey) return;
1259 const editable = event.target.closest?.('input, textarea, select, [contenteditable="true"]');
1260 if (editable) {
1261 if (event.key === 'Escape') {
1262 event.preventDefault();
1263 if (editable === els.conversationSearch) clearSearch();
1264 editable.blur();
1265 }
1266 return;
1267 }
1268 if ($('dialog[open]')) return;
1269 if (pendingG && event.key !== 'g') {
1270 clearTimeout(pendingGTimer);
1271 pendingG = false;
1272 }
1273 if (event.key === '?') { event.preventDefault(); els.shortcutsDialog.showModal(); return; }
1274 if (event.key === '/') { event.preventDefault(); focusConversationSearch(); return; }
1275 if (event.key === 'i') { event.preventDefault(); els.prompt.focus(); return; }
1276 if (event.key === 'j') { event.preventDefault(); moveVisibleNode(1); return; }
1277 if (event.key === 'k') { event.preventDefault(); moveVisibleNode(-1); return; }
1278 if (event.key === 'J') { event.preventDefault(); moveMap(1); return; }
1279 if (event.key === 'K') { event.preventDefault(); moveMap(-1); return; }
1280 if (event.key === 'h') {
1281 const parentId = nodeById(state.activeId)?.parentId;
1282 if (parentId) { event.preventDefault(); activateNode(parentId); }
1283 return;
1284 }
1285 if (event.key === 'l') {
1286 const children = childrenOf(state.activeId);
1287 if (!children.length) return;
1288 event.preventDefault();
1289 if (state.collapsedIds.includes(state.activeId)) toggleSubtree(state.activeId, false);
1290 else activateNode(children[0].id);
1291 return;
1292 }
1293 if (event.key === ' ') {
1294 if (childrenOf(state.activeId).length) { event.preventDefault(); toggleSubtree(state.activeId); }
1295 return;
1296 }
1297 if (event.key === 'G') {
1298 const ids = visibleTreeNodeIds();
1299 if (ids.length) { event.preventDefault(); activateNode(ids.at(-1)); }
1300 return;
1301 }
1302 if (event.key === 'g') {
1303 event.preventDefault();
1304 if (pendingG) {
1305 clearTimeout(pendingGTimer);
1306 pendingG = false;
1307 const ids = visibleTreeNodeIds();
1308 if (ids.length) activateNode(ids[0]);
1309 } else {
1310 pendingG = true;
1311 pendingGTimer = setTimeout(() => { pendingG = false; }, 900);
1312 }
1313 }
1314 }
1315
1316 function closeHistoryOnSmallScreen() {
1317 if (matchMedia('(max-width: 1100px)').matches) document.body.classList.remove('history-open');
1318 updateHistoryToggle();
1319 }
1320
1321 function updateHistoryToggle() {
1322 const small = matchMedia('(max-width: 1100px)').matches;
1323 const open = small ? document.body.classList.contains('history-open') : !document.body.classList.contains('history-collapsed');
1324 els.historyToggle.setAttribute('aria-expanded', String(open));
1325 }
1326
1327 function toggleHistory() {
1328 if (matchMedia('(max-width: 1100px)').matches) {
1329 document.body.classList.remove('history-collapsed');
1330 document.body.classList.toggle('history-open');
1331 if (document.body.classList.contains('history-open')) document.body.classList.remove('map-open');
1332 } else document.body.classList.toggle('history-collapsed');
1333 updateHistoryToggle();
1334 }
1335
1336 function clearChatHistory(message = 'Clear all saved conversations? Your API key and usage records will be kept. Uploaded API files will not be deleted.') {
1337 if (!workspace.maps.some(map => map.nodes.length || map.attachments.length)) { showToast('Chat history is already empty'); return false; }
1338 if (!confirm(message)) return false;
1339 if (activeRequest) activeRequest.abort();
1340 const map = blankMap();
1341 workspace = { version: 2, maps: [map], activeMapId: map.id };
1342 state = map;
1343 searchIndex = null;
1344 els.conversationSearch.value = '';
1345 persistNow();
1346 renderAll();
1347 showToast('All conversations cleared');
1348 return true;
1349 }
1350
1351 function deleteMap(mapId) {
1352 const map = workspace.maps.find(candidate => candidate.id === mapId);
1353 if (!map) return;
1354 if (uploadingFiles && uploadTargetMapId === map.id) { showToast('Wait for this map’s file upload to finish'); return; }
1355 const remoteNote = map.attachments.length ? ' Uploaded API files will not be deleted.' : '';
1356 if (!confirm(`Delete “${map.title}” and its entire conversation? This cannot be undone.${remoteNote}`)) return;
1357 if (activeRequest && map.nodes.some(node => node.status === 'loading')) activeRequest.abort();
1358
1359 workspace.maps = workspace.maps.filter(candidate => candidate.id !== map.id);
1360 searchIndex = null;
1361 if (!workspace.maps.length) workspace.maps.push(blankMap());
1362 if (state === map) {
1363 const next = [...workspace.maps]
1364 .filter(candidate => candidate.nodes.length || candidate.attachments.length)
1365 .sort((a, b) => b.updatedAt - a.updatedAt)[0] || workspace.maps[0];
1366 workspace.activeMapId = next.id;
1367 state = next;
1368 state.activeId = state.nodes.at(-1)?.id || null;
1369 revealNode(state, state.activeId);
1370 }
1371 persistNow();
1372 renderAll({ scroll: state.activeId ? 'bottom' : false });
1373 showToast('Conversation deleted');
1374 }
1375
1376 function renameMap(mapId) {
1377 const map = workspace.maps.find(candidate => candidate.id === mapId);
1378 if (!map) return;
1379 const value = prompt('Rename this conversation. Leave blank to restore its automatic title.', map.title);
1380 if (value === null) return;
1381 const title = value.replace(/\s+/g, ' ').trim();
1382 if (title) {
1383 map.title = title.slice(0, 120);
1384 map.titleCustom = true;
1385 } else {
1386 map.titleCustom = false;
1387 refreshMapTitle(map);
1388 }
1389 touchMap(map);
1390 persistNow();
1391 renderHistory();
1392 showToast(title ? 'Conversation renamed' : 'Automatic title restored');
1393 }
1394
1395 function showSelectionMenu(text, nodeId, rect) {
1396 selectedText = { text: text.slice(0, 5000), nodeId };
1397 els.selectionPreview.textContent = text.length > 240 ? `${text.slice(0, 240)}…` : text;
1398 els.selectionMenu.hidden = false;
1399 const width = 330;
1400 const left = Math.max(12, Math.min(innerWidth - width - 12, rect.left + rect.width / 2 - width / 2));
1401 const estimatedHeight = 235;
1402 const top = rect.bottom + estimatedHeight < innerHeight ? rect.bottom + 10 : Math.max(10, rect.top - estimatedHeight - 8);
1403 Object.assign(els.selectionMenu.style, { left: `${left}px`, top: `${top}px` });
1404 }
1405
1406 function hideSelectionMenu() { els.selectionMenu.hidden = true; selectedText = null; }
1407
1408 els.composer.addEventListener('submit', event => {
1409 event.preventDefault();
1410 if (activeRequest) { activeRequest.abort(); return; }
1411 const question = els.prompt.value;
1412 els.prompt.value = '';
1413 els.prompt.style.height = '';
1414 ask(question);
1415 });
1416 els.prompt.addEventListener('keydown', event => {
1417 if (event.key === 'Enter' && !event.shiftKey && !event.isComposing) { event.preventDefault(); els.composer.requestSubmit(); }
1418 });
1419 els.prompt.addEventListener('input', () => {
1420 els.prompt.style.height = 'auto';
1421 els.prompt.style.height = `${Math.min(els.prompt.scrollHeight, 180)}px`;
1422 });
1423 document.addEventListener('click', event => {
1424 const starter = event.target.closest('.starter');
1425 if (starter) { els.prompt.value = starter.dataset.prompt; els.prompt.focus(); }
1426 const historyItem = event.target.closest('.history-item');
1427 if (historyItem) { switchMap(historyItem.dataset.mapId); return; }
1428 const searchResult = event.target.closest('.search-result');
1429 if (searchResult) {
1430 const { mapId, nodeId } = searchResult.dataset;
1431 clearSearch();
1432 switchMap(mapId, nodeId || null);
1433 return;
1434 }
1435 const renameConversation = event.target.closest('.rename-map');
1436 if (renameConversation) { renameMap(renameConversation.dataset.mapId); return; }
1437 const deleteConversation = event.target.closest('.delete-map');
1438 if (deleteConversation) { deleteMap(deleteConversation.dataset.mapId); return; }
1439 const removeFile = event.target.closest('.remove-attachment');
1440 if (removeFile) { removeAttachment(removeFile.dataset.fileId); return; }
1441 const subtreeToggle = event.target.closest('.toggle-subtree');
1442 if (subtreeToggle) { toggleSubtree(subtreeToggle.dataset.nodeId); return; }
1443 const treeNode = event.target.closest('.tree-node');
1444 if (treeNode) { activateNode(treeNode.dataset.nodeId); return; }
1445 const branch = event.target.closest('.branch-here');
1446 if (branch) { state.activeId = branch.closest('.message').dataset.nodeId; persistSoon(); renderAll(); els.prompt.focus(); }
1447 const retry = event.target.closest('.retry-node');
1448 if (retry) { const old = nodeById(retry.closest('.message').dataset.nodeId); state.activeId = old.parentId; ask(old.question, old.parentId); }
1449 const copy = event.target.closest('.copy-answer');
1450 if (copy) { const node = nodeById(copy.closest('.message').dataset.nodeId); navigator.clipboard.writeText(node.answer).then(() => showToast('Answer copied')); }
1451 });
1452 document.addEventListener('mouseup', event => {
1453 if (event.target.closest('.selection-menu')) return;
1454 requestAnimationFrame(() => {
1455 const selection = getSelection();
1456 const text = selection?.toString().trim();
1457 if (!text || text.length < 2 || !selection.rangeCount) return;
1458 const answer = selection.anchorNode?.parentElement?.closest('.answer-body');
1459 if (!answer || !answer.contains(selection.focusNode)) return;
1460 const message = answer.closest('.message');
1461 showSelectionMenu(text, message.dataset.nodeId, selection.getRangeAt(0).getBoundingClientRect());
1462 });
1463 });
1464
1465 $('#ask-selection').addEventListener('click', () => {
1466 if (!selectedText) return;
1467 const action = els.selectionAction.value === 'custom' ? els.selectionCustom.value.trim() : els.selectionAction.value;
1468 if (!action) { els.selectionCustom.focus(); return; }
1469 const question = `${action}\n\nSelected passage:\n> ${selectedText.text.replace(/\n/g, '\n> ')}`;
1470 const parentId = selectedText.nodeId;
1471 hideSelectionMenu();
1472 getSelection()?.removeAllRanges();
1473 ask(question, parentId);
1474 });
1475 els.selectionAction.addEventListener('change', () => {
1476 els.selectionCustom.hidden = els.selectionAction.value !== 'custom';
1477 if (!els.selectionCustom.hidden) els.selectionCustom.focus();
1478 });
1479 $('#close-selection').addEventListener('click', hideSelectionMenu);
1480 window.addEventListener('scroll', hideSelectionMenu, { passive: true });
1481 $('#open-settings').addEventListener('click', openSettings);
1482 els.activeConnection.addEventListener('click', openSettings);
1483 $('#open-usage').addEventListener('click', openUsage);
1484 $('#theme-toggle').addEventListener('click', toggleTheme);
1485 $('#toggle-history').addEventListener('click', toggleHistory);
1486 els.conversationSearch.addEventListener('input', () => {
1487 clearTimeout(searchTimer);
1488 searchTimer = setTimeout(renderSearchResults, 110);
1489 });
1490 els.conversationSearch.addEventListener('keydown', event => {
1491 if (event.key !== 'Enter') return;
1492 const first = $('.search-result', els.searchResults);
1493 if (first) { event.preventDefault(); first.click(); }
1494 });
1495 $('#study-lab-home').addEventListener('click', event => { event.preventDefault(); createNewMap(); });
1496 $('#new-map-sidebar').addEventListener('click', createNewMap);
1497 els.uploadFile.addEventListener('click', () => els.fileInput.click());
1498 els.fileInput.addEventListener('change', () => uploadFiles(els.fileInput.files));
1499 $('#close-settings').addEventListener('click', () => els.settings.close());
1500 els.settings.addEventListener('close', () => { settingsDraft = null; });
1501 $('#close-usage').addEventListener('click', () => els.usageDialog.close());
1502 $('#open-shortcuts').addEventListener('click', () => els.shortcutsDialog.showModal());
1503 $('#close-shortcuts').addEventListener('click', () => els.shortcutsDialog.close());
1504 $('#expand-all-nodes').addEventListener('click', () => setAllSubtrees(false));
1505 $('#collapse-all-nodes').addEventListener('click', () => setAllSubtrees(true));
1506 $('#zoom-out-tree').addEventListener('click', () => updateTreeZoom(-.1));
1507 $('#zoom-in-tree').addEventListener('click', () => updateTreeZoom(.1));
1508 $('#reset-usage').addEventListener('click', () => {
1509 if (!usageRecords.length || confirm('Reset the locally tracked API usage history? This cannot be undone.')) {
1510 usageRecords = [];
1511 localStorage.removeItem(USAGE_KEY);
1512 updateUsageButton();
1513 renderUsage();
1514 showToast('Local usage history reset');
1515 }
1516 });
1517 document.querySelectorAll('.toggle-key').forEach(button => button.addEventListener('click', event => {
1518 const input = document.getElementById(event.currentTarget.dataset.keyInput);
1519 const show = input.type === 'password';
1520 input.type = show ? 'text' : 'password';
1521 event.currentTarget.textContent = show ? 'Hide' : 'Show';
1522 event.currentTarget.setAttribute('aria-label', `${show ? 'Hide' : 'Show'} ${input.id === 'openrouter-api-key' ? 'OpenRouter' : 'OpenAI'} API key`);
1523 }));
1524 $('#add-model').addEventListener('click', () => {
1525 captureSettingsForm();
1526 const id = uid();
1527 settingsDraft.models.push({ id, provider: 'openai', model: PROVIDERS.openai.model, apiUrl: PROVIDERS.openai.apiUrl });
1528 renderModelCards();
1529 $('.model-name-input', els.modelConfigs.lastElementChild)?.focus();
1530 });
1531 els.modelConfigs.addEventListener('change', event => {
1532 if (event.target.matches('.default-model-radio')) { updateModelCardSelection(); return; }
1533 if (!event.target.matches('.model-provider')) return;
1534 const card = event.target.closest('[data-model-card]');
1535 const previousProvider = card.dataset.provider;
1536 const provider = event.target.value;
1537 captureSettingsForm();
1538 const connection = settingsDraft.models.find(model => model.id === card.dataset.modelId);
1539 if (connection.model === PROVIDERS[previousProvider].model) connection.model = PROVIDERS[provider].model;
1540 if (connection.apiUrl === PROVIDERS[previousProvider].apiUrl) connection.apiUrl = PROVIDERS[provider].apiUrl;
1541 connection.provider = provider;
1542 renderModelCards();
1543 });
1544 els.modelConfigs.addEventListener('click', event => {
1545 const button = event.target.closest('.remove-model');
1546 if (!button || button.disabled) return;
1547 const id = button.closest('[data-model-card]').dataset.modelId;
1548 captureSettingsForm();
1549 settingsDraft.models = settingsDraft.models.filter(model => model.id !== id);
1550 if (settingsDraft.activeModelId === id) settingsDraft.activeModelId = settingsDraft.models[0].id;
1551 renderModelCards();
1552 });
1553 $('#settings-form').addEventListener('submit', event => {
1554 event.preventDefault();
1555 captureSettingsForm();
1556 settings = normalizeSettings({ ...settingsDraft, systemPrompt: els.systemPrompt.value.trim() });
1557 localStorage.setItem(SETTINGS_KEY, JSON.stringify(settings));
1558 settingsDraft = null;
1559 updateKeyStatus(); renderAttachments(); els.settings.close(); showToast(`${providerLabel()} settings saved`);
1560 });
1561 $('#clear-history').addEventListener('click', () => clearChatHistory());
1562 $('#clear-branch').addEventListener('click', () => { state.activeId = state.nodes.at(-1)?.id || null; revealNode(state, state.activeId); persistSoon(); renderAll({ scroll: true }); });
1563 $('#collapse-map').addEventListener('click', () => { document.body.classList.remove('map-open'); document.body.classList.add('map-collapsed'); $('#expand-map').hidden = false; });
1564 $('#expand-map').addEventListener('click', () => { document.body.classList.remove('map-collapsed', 'history-open'); document.body.classList.add('map-open'); $('#expand-map').hidden = true; updateHistoryToggle(); });
1565 addEventListener('resize', updateHistoryToggle, { passive: true });
1566 document.addEventListener('keydown', handleVimNavigation);
1567
1568 updateKeyStatus();
1569 updateThemeButton();
1570 updateUsageButton();
1571 updateHistoryToggle();
1572 updateTreeZoom();
1573 state.activeId = state.nodes.at(-1)?.id || null;
1574 revealNode(state, state.activeId);
1575 renderAll();
1576})();