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<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>QueryMind — Natural Language to SQL</title>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Inter:wght@300;400;500;600&display=swap" rel="stylesheet" />
<style>
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
/* ── Core palette: slate/blue professional ── */
--bg: #0d1117;
--surface: #161b22;
--card: #1c2128;
--card2: #21262d;
--border: #30363d;
--border2: #3d444d;
/* ── Accent: cool indigo-blue ── */
--accent: #58a6ff;
--accent2: #388bfd;
--accent-dim: rgba(88,166,255,0.08);
--accent-glow: rgba(88,166,255,0.18);
/* ── SQL syntax colors (VSCode Dark+ inspired) ── */
--sql-keyword: #ff7b72; /* red-orange — SELECT FROM WHERE */
--sql-func: #d2a8ff; /* purple — COUNT AVG MAX */
--sql-string: #a5d6ff; /* light blue — 'string values' */
--sql-num: #79c0ff; /* blue — numbers */
--sql-comment: #484f58; /* grey — comments */
--sql-op: #ffa657; /* orange — = < > operators */
--sql-table: #56d364; /* green — table/column identifiers */
--sql-default: #c9d1d9; /* light grey — base text */
/* ── Semantic ── */
--danger: #f85149;
--success: #3fb950;
--warn: #d29922;
--text: #e6edf3;
--text2: #8b949e;
--muted: #484f58;
--mono: 'JetBrains Mono', monospace;
--sans: 'Inter', sans-serif;
--radius: 8px;
--radius-lg: 14px;
--sidebar-w: 280px;
--header-h: 54px;
}
html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 14px; line-height: 1.6; overflow-x: hidden; }
/* ── Layout ── */
#app { display: grid; grid-template-rows: var(--header-h) 1fr; grid-template-columns: var(--sidebar-w) 1fr; height: 100vh; }
/* ── Header ── */
header { grid-column: 1/-1; display: flex; align-items: center; gap: 12px; padding: 0 20px; background: var(--surface); border-bottom: 1px solid var(--border); z-index: 100; }
.logo-wrap { display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 30px; height: 30px; background: linear-gradient(135deg, #388bfd, #58a6ff); border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: 15px; flex-shrink: 0; box-shadow: 0 0 12px rgba(88,166,255,0.3); }
.logo-text { font-family: var(--mono); font-weight: 600; font-size: 14px; color: var(--text); letter-spacing: -0.2px; }
.logo-text span { color: var(--accent); }
#menu-btn { display: none; background: none; border: none; cursor: pointer; color: var(--text2); font-size: 20px; padding: 4px; margin-right: 4px; line-height: 1; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.clear-btn { background: none; border: 1px solid var(--border2); color: var(--text2); font-size: 10px; padding: 4px 10px; border-radius: 5px; cursor: pointer; font-family: var(--mono); letter-spacing: 0.8px; transition: all 0.15s; text-transform: uppercase; }
.clear-btn:hover { border-color: var(--danger); color: var(--danger); background: rgba(248,81,73,0.06); }
.status-wrap { display: flex; align-items: center; gap: 6px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); animation: blink 3s ease-in-out infinite; }
.status-dot.ready { background: var(--success); animation: pulse-ok 2.5s ease-in-out infinite; }
@keyframes blink { 0%,100%{opacity:.4} 50%{opacity:1} }
@keyframes pulse-ok { 0%,100%{box-shadow:0 0 0 0 rgba(63,185,80,0.4)} 50%{box-shadow:0 0 0 5px transparent} }
.badge { font-family: var(--mono); font-size: 10px; padding: 3px 8px; border-radius: 4px; border: 1px solid var(--border2); color: var(--text2); letter-spacing: 0.5px; }
.badge.active { border-color: rgba(88,166,255,0.4); color: var(--accent); background: var(--accent-dim); }
/* ── Sidebar ── */
aside { background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; transition: transform 0.25s ease; }
.aside-section { padding: 16px 14px 12px; border-bottom: 1px solid var(--border); }
.section-label { font-family: var(--mono); font-size: 9px; letter-spacing: 1.5px; color: var(--muted); text-transform: uppercase; margin-bottom: 10px; }
/* Upload */
.upload-zone { border: 1.5px dashed var(--border2); border-radius: var(--radius); padding: 18px 12px; text-align: center; cursor: pointer; transition: all 0.2s; position: relative; background: var(--card); }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--accent); background: var(--accent-dim); box-shadow: 0 0 0 3px rgba(88,166,255,0.08); }
.upload-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }
.upload-icon { font-size: 20px; margin-bottom: 6px; display: block; }
.upload-zone p { font-size: 12px; color: var(--text2); line-height: 1.5; }
.upload-zone p strong { color: var(--text); font-weight: 500; }
/* File info */
#file-info { display: none; background: var(--card); border: 1px solid var(--border2); border-radius: var(--radius); padding: 11px; font-size: 12px; margin-top: 10px; }
#file-info.show { display: block; }
.file-name { font-family: var(--mono); font-size: 10px; color: var(--accent); word-break: break-all; margin-bottom: 7px; font-weight: 600; }
.file-info-row { display: flex; justify-content: space-between; color: var(--text2); margin-bottom: 3px; }
.file-info-row span:first-child { color: var(--muted); }
.schema-label { font-family: var(--mono); font-size: 9px; letter-spacing: 1px; color: var(--muted); text-transform: uppercase; margin-top: 9px; margin-bottom: 4px; }
#schema-box { display: none; font-family: var(--mono); font-size: 10px; color: var(--text2); background: var(--bg); border: 1px solid var(--border); border-radius: 5px; padding: 8px; max-height: 100px; overflow-y: auto; white-space: pre-wrap; word-break: break-all; line-height: 1.7; }
#schema-box.show { display: block; }
/* Suggestions */
.aside-section.suggestions { flex: 1; overflow-y: auto; }
#suggestions-list { display: flex; flex-direction: column; gap: 5px; }
.suggestion-chip { padding: 7px 10px; border-radius: 6px; border: 1px solid var(--border); background: transparent; font-size: 11px; color: var(--text2); cursor: pointer; transition: all 0.15s; text-align: left; font-family: var(--sans); line-height: 1.4; }
.suggestion-chip:hover { border-color: var(--accent2); color: var(--text); background: var(--accent-dim); }
/* ── Main ── */
main { display: flex; flex-direction: column; overflow: hidden; background: var(--bg); }
#chat { flex: 1; overflow-y: auto; padding: 20px 24px; display: flex; flex-direction: column; gap: 16px; scroll-behavior: smooth; }
/* Empty state */
#empty-state { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; color: var(--text2); text-align: center; padding: 40px 20px; }
.empty-icon { font-size: 38px; animation: float 4s ease-in-out infinite; filter: drop-shadow(0 4px 12px rgba(88,166,255,0.2)); }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
#empty-state h2 { font-size: 15px; color: var(--text); font-weight: 500; }
#empty-state p { font-size: 12px; max-width: 300px; line-height: 1.7; color: var(--text2); }
/* ── Messages ── */
.msg { display: flex; flex-direction: column; gap: 3px; max-width: 800px; width: 100%; }
.msg.user { align-self: flex-end; align-items: flex-end; max-width: 75%; }
.msg.assistant { align-self: flex-start; align-items: flex-start; }
.msg-meta { font-size: 10px; color: var(--muted); font-family: var(--mono); padding: 0 4px; }
.bubble { padding: 11px 15px; border-radius: var(--radius-lg); font-size: 13.5px; line-height: 1.65; }
.msg.user .bubble { background: var(--accent2); color: #fff; border-bottom-right-radius: 4px; font-weight: 400; }
.msg.assistant .bubble { background: var(--card); border: 1px solid var(--border); border-bottom-left-radius: 4px; color: var(--text); width: 100%; }
/* ── SQL Block ── */
.sql-block { background: #010409; border: 1px solid var(--border2); border-radius: var(--radius); margin-top: 10px; overflow: hidden; }
.sql-block-header { display: flex; align-items: center; justify-content: space-between; padding: 7px 12px; background: var(--card2); border-bottom: 1px solid var(--border); }
.sql-block-label { display: flex; align-items: center; gap: 6px; }
.sql-dot { width: 8px; height: 8px; border-radius: 50%; }
.sql-dot-r { background: #f85149; }
.sql-dot-y { background: #d29922; }
.sql-dot-g { background: #3fb950; }
.sql-block-header span.sql-lang { font-family: var(--mono); font-size: 9px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text2); margin-left: 4px; }
.copy-btn { background: none; border: 1px solid var(--border2); color: var(--text2); font-size: 10px; padding: 3px 8px; border-radius: 4px; cursor: pointer; font-family: var(--mono); transition: all 0.15s; }
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
/* SQL syntax highlighting */
.sql-code { padding: 16px 18px; font-family: var(--mono); font-size: 12.5px; line-height: 2; color: var(--sql-default); white-space: pre-wrap; word-break: break-word; }
.sql-code .kw { color: var(--sql-keyword); font-weight: 600; } /* SELECT FROM WHERE */
.sql-code .fn { color: var(--sql-func); } /* COUNT AVG */
.sql-code .st { color: var(--sql-string); } /* 'strings' */
.sql-code .nm { color: var(--sql-num); } /* numbers */
.sql-code .cm { color: var(--sql-comment); font-style: italic; } /* -- comments */
.sql-code .op { color: var(--sql-op); } /* = < > */
.sql-code .id { color: var(--sql-table); } /* identifiers */
/* ── Result Table ── */
.result-table-wrap { margin-top: 10px; border: 1px solid var(--border); border-radius: var(--radius); overflow: auto; max-height: 280px; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
thead th { position: sticky; top: 0; background: var(--card2); padding: 8px 13px; text-align: left; font-family: var(--mono); font-size: 10px; color: var(--accent); letter-spacing: 0.8px; border-bottom: 1px solid var(--border2); white-space: nowrap; }
tbody tr { border-bottom: 1px solid var(--border); transition: background 0.1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(88,166,255,0.04); }
td { padding: 7px 13px; color: var(--text2); white-space: nowrap; font-size: 12px; }
.result-count { font-family: var(--mono); font-size: 10px; color: var(--muted); margin-top: 5px; padding-left: 2px; }
/* Error */
.error-bubble { background: rgba(248,81,73,0.06); border: 1px solid rgba(248,81,73,0.25); border-radius: var(--radius); padding: 10px 14px; font-size: 12px; color: #ffa198; margin-top: 8px; font-family: var(--mono); }
/* Thinking */
.thinking { display: flex; gap: 5px; align-items: center; padding: 12px 16px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); border-bottom-left-radius: 4px; }
.thinking span { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: think 1.2s ease-in-out infinite; }
.thinking span:nth-child(2){animation-delay:.2s} .thinking span:nth-child(3){animation-delay:.4s}
@keyframes think { 0%,60%,100%{transform:translateY(0);opacity:.3} 30%{transform:translateY(-6px);opacity:1} }
/* ── Input Bar ── */
.input-bar { padding: 12px 20px 14px; background: var(--surface); border-top: 1px solid var(--border); }
.input-row { display: flex; gap: 9px; align-items: flex-end; }
#question-input { flex: 1; background: var(--card); border: 1.5px solid var(--border2); border-radius: var(--radius); padding: 10px 13px; font-size: 14px; font-family: var(--sans); color: var(--text); resize: none; min-height: 44px; max-height: 120px; outline: none; transition: border-color 0.2s, box-shadow 0.2s; line-height: 1.5; }
#question-input:focus { border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(88,166,255,0.1); }
#question-input::placeholder { color: var(--muted); }
#question-input:disabled { opacity: 0.4; cursor: not-allowed; }
#send-btn { background: var(--accent2); color: #fff; border: none; border-radius: var(--radius); width: 44px; height: 44px; cursor: pointer; font-size: 18px; display: flex; align-items: center; justify-content: center; transition: all 0.2s; flex-shrink: 0; font-weight: 700; }
#send-btn:hover { background: var(--accent); box-shadow: 0 0 12px rgba(88,166,255,0.35); transform: scale(1.04); }
#send-btn:disabled { opacity: 0.3; cursor: not-allowed; transform: none; box-shadow: none; }
.input-hint { font-size: 11px; color: var(--muted); margin-top: 5px; padding-left: 2px; }
/* Toast */
#toast { position: fixed; bottom: 20px; right: 20px; background: var(--card2); border: 1px solid var(--border2); border-radius: var(--radius); padding: 9px 15px; font-size: 12px; font-family: var(--mono); color: var(--text); z-index: 9999; transform: translateY(50px); opacity: 0; transition: all 0.3s cubic-bezier(.34,1.56,.64,1); pointer-events: none; max-width: 280px; }
#toast.show { transform: translateY(0); opacity: 1; }
#toast.success { border-color: rgba(63,185,80,0.4); color: #56d364; }
#toast.error { border-color: rgba(248,81,73,0.4); color: #ffa198; }
/* Loading bar */
#loading-bar { position: fixed; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--accent2), var(--accent), #79c0ff); z-index: 10000; transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease; }
#loading-bar.active { transform: scaleX(0.8); }
#loading-bar.done { transform: scaleX(1); opacity: 0; transition: opacity 0.4s 0.1s; }
/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text2); }
/* Mobile overlay */
#overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 90; backdrop-filter: blur(2px); }
#overlay.show { display: block; }
/* ── RESPONSIVE ── */
@media (max-width: 900px) {
:root { --sidebar-w: 240px; }
#chat { padding: 14px 16px; }
.input-bar { padding: 10px 16px 12px; }
.msg.user { max-width: 85%; }
}
@media (max-width: 640px) {
:root { --header-h: 50px; }
#app { grid-template-columns: 1fr; }
#menu-btn { display: flex; align-items: center; }
aside { position: fixed; top: var(--header-h); left: 0; width: 80vw; max-width: 300px; height: calc(100vh - var(--header-h)); z-index: 95; transform: translateX(-100%); box-shadow: 6px 0 24px rgba(0,0,0,0.5); }
aside.open { transform: translateX(0); }
main { grid-column: 1; }
.msg { max-width: 100%; }
.msg.user { max-width: 88%; }
#chat { padding: 12px; gap: 12px; }
.bubble { padding: 10px 13px; font-size: 13px; }
.sql-code { font-size: 11px; padding: 12px; line-height: 1.8; }
td, thead th { padding: 6px 10px; font-size: 11px; }
.input-bar { padding: 8px 12px 10px; }
.input-hint { display: none; }
.status-wrap .badge { display: none; }
#toast { bottom: 12px; right: 12px; left: 12px; max-width: none; }
}
@media (max-width: 380px) {
.logo-text { font-size: 13px; }
.clear-btn { padding: 3px 7px; font-size: 9px; }
}
</style>
</head>
<body>
<div id="loading-bar"></div>
<div id="toast"></div>
<div id="overlay" onclick="closeSidebar()"></div>
<div id="app">
<header>
<button id="menu-btn" onclick="toggleSidebar()">☰</button>
<div class="logo-wrap">
<div class="logo-icon">⚡</div>
<div class="logo-text">Query<span>Mind</span></div>
</div>
<div class="header-right">
<button class="clear-btn" onclick="clearChat()">Clear</button>
<div class="status-wrap">
<span id="status-dot" class="status-dot"></span>
<span id="status-label" class="badge">Loading</span>
</div>
</div>
</header>
<aside id="sidebar">
<div class="aside-section">
<div class="section-label">Data Source</div>
<div class="upload-zone" id="upload-zone">
<input type="file" id="csv-input" accept=".csv" />
<span class="upload-icon">📂</span>
<p><strong>Drop CSV here</strong><br/>or click to browse</p>
</div>
<div id="file-info">
<div class="file-name" id="file-name-display"></div>
<div class="file-info-row"><span>Rows</span><span id="row-count">—</span></div>
<div class="file-info-row"><span>Columns</span><span id="col-count">—</span></div>
<div class="schema-label">Schema</div>
<div id="schema-box"></div>
</div>
</div>
<div class="aside-section suggestions">
<div class="section-label">Example Queries</div>
<div id="suggestions-list">
<div class="suggestion-chip" style="cursor:default;font-style:italic;">Upload CSV to see examples</div>
</div>
</div>
</aside>
<main>
<div id="chat">
<div id="empty-state">
<div class="empty-icon">🗂️</div>
<h2>Ask anything about your data</h2>
<p>Upload a CSV from the sidebar, then ask a question in plain English. QueryMind converts it to SQL and shows results instantly.</p>
</div>
</div>
<div class="input-bar">
<div class="input-row">
<textarea id="question-input" placeholder="e.g. Show top 10 rows by sales…" rows="1" disabled></textarea>
<button id="send-btn" disabled title="Send (Enter)">↑</button>
</div>
<div class="input-hint">Enter to send · Shift+Enter new line</div>
</div>
</main>
</div>
<script>
let sessionId=null, isLoading=false, columns=[];
const chat=document.getElementById('chat'), emptyState=document.getElementById('empty-state'),
input=document.getElementById('question-input'), sendBtn=document.getElementById('send-btn'),
csvInput=document.getElementById('csv-input'), uploadZone=document.getElementById('upload-zone'),
fileInfo=document.getElementById('file-info'), fileNameDisp=document.getElementById('file-name-display'),
rowCountEl=document.getElementById('row-count'), colCountEl=document.getElementById('col-count'),
schemaBox=document.getElementById('schema-box'), suggList=document.getElementById('suggestions-list'),
statusDot=document.getElementById('status-dot'), statusLabel=document.getElementById('status-label'),
loadingBar=document.getElementById('loading-bar'), toast=document.getElementById('toast'),
sidebar=document.getElementById('sidebar'), overlay=document.getElementById('overlay');
function toggleSidebar(){ sidebar.classList.toggle('open'); overlay.classList.toggle('show'); }
function closeSidebar(){ sidebar.classList.remove('open'); overlay.classList.remove('show'); }
async function checkHealth(){
try{
const d=await(await fetch('/health')).json();
if(d.status==='ok'){ statusDot.classList.add('ready'); statusLabel.textContent=d.model.split('/').pop().toUpperCase(); statusLabel.classList.add('active'); }
}catch{ statusLabel.textContent='OFFLINE'; }
}
checkHealth();
let toastTimer;
function showToast(msg,type='success'){ toast.textContent=msg; toast.className=`show ${type}`; clearTimeout(toastTimer); toastTimer=setTimeout(()=>toast.className='',3200); }
function startLoading(){ loadingBar.className='active'; isLoading=true; sendBtn.disabled=true; input.disabled=true; }
function stopLoading(){ loadingBar.className='done'; isLoading=false; if(sessionId){sendBtn.disabled=false;input.disabled=false;} setTimeout(()=>loadingBar.className='',600); }
uploadZone.addEventListener('dragover',e=>{e.preventDefault();uploadZone.classList.add('dragover');});
uploadZone.addEventListener('dragleave',()=>uploadZone.classList.remove('dragover'));
uploadZone.addEventListener('drop',e=>{e.preventDefault();uploadZone.classList.remove('dragover');const f=e.dataTransfer.files[0];if(f)handleUpload(f);});
csvInput.addEventListener('change',e=>{if(e.target.files[0])handleUpload(e.target.files[0]);});
async function handleUpload(file){
if(!file.name.endsWith('.csv')){showToast('Only .csv files accepted','error');return;}
startLoading();
const fd=new FormData(); fd.append('file',file);
try{
const r=await fetch('/upload',{method:'POST',body:fd});
const d=await r.json();
if(!r.ok)throw new Error(d.detail||'Upload failed');
sessionId=d.session_id; columns=d.columns;
fileNameDisp.textContent=file.name;
rowCountEl.textContent=d.row_count.toLocaleString();
colCountEl.textContent=d.columns.length;
schemaBox.textContent=d.schema;
schemaBox.classList.add('show'); fileInfo.classList.add('show');
buildSuggestions(d.columns,d.table_name);
showToast(`✓ Loaded ${d.row_count.toLocaleString()} rows`,'success');
emptyState.style.display='none'; closeSidebar();
addMsg('assistant',`<strong>File loaded:</strong> <code>${file.name}</code><br/>Table <code>${d.table_name}</code> · ${d.row_count.toLocaleString()} rows · ${d.columns.length} columns.<br/><br/>Columns: <code>${d.columns.join(', ')}</code><br/><br/>Ask me anything about this data in plain English.`);
}catch(e){showToast(e.message,'error');}
stopLoading();
}
function buildSuggestions(cols,table){
const numCol=cols.find(c=>/num|price|val|amt|count|qty|sal|rev|cost/i.test(c))||cols[1]||cols[0];
const qs=[`Show the first 10 rows`,`Count total number of records`,`How many unique values in ${cols[0]}?`,`What is the average of ${numCol}?`,`Show rows where ${cols[0]} is not null`,`Group by ${cols[0]} and count records`];
suggList.innerHTML='';
qs.forEach(q=>{
const btn=document.createElement('button'); btn.className='suggestion-chip'; btn.textContent=q;
btn.onclick=()=>{input.value=q;input.focus();closeSidebar();sendQuery();};
suggList.appendChild(btn);
});
}
input.addEventListener('input',()=>{input.style.height='auto';input.style.height=Math.min(input.scrollHeight,120)+'px';});
input.addEventListener('keydown',e=>{if(e.key==='Enter'&&!e.shiftKey){e.preventDefault();if(!isLoading&&sessionId&&input.value.trim())sendQuery();}});
sendBtn.addEventListener('click',()=>{if(!isLoading&&sessionId&&input.value.trim())sendQuery();});
async function sendQuery(){
const question=input.value.trim(); if(!question||!sessionId)return;
addMsg('user',escapeHtml(question));
input.value=''; input.style.height='auto';
startLoading(); const thinkId=addThinking();
try{
const r=await fetch('/query',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({session_id:sessionId,question})});
const d=await r.json(); removeThinking(thinkId);
if(!r.ok)throw new Error(d.detail||'Query failed');
addMsg('assistant',buildResultHtml(d.sql,d.results));
}catch(e){
removeThinking(thinkId);
addMsg('assistant',`<div class="error-bubble">⚠ ${escapeHtml(e.message)}</div>`);
showToast(e.message,'error');
}
stopLoading();
}
function highlightSQL(raw){
const kw=/\b(SELECT|FROM|WHERE|AND|OR|NOT|IN|IS|NULL|LIKE|BETWEEN|ORDER\s+BY|GROUP\s+BY|HAVING|LIMIT|OFFSET|DISTINCT|AS|JOIN|LEFT|RIGHT|INNER|OUTER|ON|UNION|ALL|INSERT|UPDATE|DELETE|CREATE|TABLE|DROP|ALTER|WITH|CASE|WHEN|THEN|ELSE|END|EXISTS|BY|ASC|DESC|INTO|VALUES|SET)\b/gi;
const fn=/\b(COUNT|SUM|AVG|MAX|MIN|COALESCE|NULLIF|IFNULL|ROUND|FLOOR|CEIL|ABS|LENGTH|UPPER|LOWER|TRIM|SUBSTR|REPLACE|CAST|DATE|DATETIME|NOW|RANDOM|IIF|GROUP_CONCAT)\b/gi;
return escapeHtml(raw)
.replace(/(--[^\n]*)/g,m=>`<span class="cm">${m}</span>`)
.replace(/('(?:[^'\\]|\\.)*')/g,m=>`<span class="st">${m}</span>`)
.replace(/\b(\d+(?:\.\d+)?)\b/g,m=>`<span class="nm">${m}</span>`)
.replace(kw,m=>`<span class="kw">${m}</span>`)
.replace(fn,m=>`<span class="fn">${m}</span>`)
.replace(/(?<![<\w])([=<>!]+|[+\-*\/])(?![\w>])/g,m=>`<span class="op">${m}</span>`);
}
function buildResultHtml(sql,results){
let html=`
<div class="sql-block">
<div class="sql-block-header">
<div class="sql-block-label">
<span class="sql-dot sql-dot-r"></span>
<span class="sql-dot sql-dot-y"></span>
<span class="sql-dot sql-dot-g"></span>
<span class="sql-lang">SQL</span>
</div>
<button class="copy-btn" onclick="copySql(this)">Copy</button>
</div>
<div class="sql-code">${highlightSQL(sql)}</div>
</div>`;
if(!results||results.length===0) return html+`<div style="margin-top:9px;font-size:12px;color:var(--muted);">No rows returned.</div>`;
const cols=Object.keys(results[0]);
let tbl=`<div class="result-table-wrap"><table><thead><tr>${cols.map(c=>`<th>${escapeHtml(c)}</th>`).join('')}</tr></thead><tbody>`;
results.forEach(row=>{tbl+=`<tr>${cols.map(c=>`<td>${row[c]===null?`<span style="color:var(--muted)">null</span>`:escapeHtml(String(row[c]))}</td>`).join('')}</tr>`;});
tbl+=`</tbody></table></div><div class="result-count">${results.length.toLocaleString()} row${results.length!==1?'s':''} returned</div>`;
return html+tbl;
}
window.copySql=function(btn){
const code=btn.closest('.sql-block').querySelector('.sql-code').textContent;
navigator.clipboard.writeText(code).then(()=>{btn.textContent='Copied!';setTimeout(()=>btn.textContent='Copy',1600);});
};
function addMsg(role,html){
const now=new Date().toLocaleTimeString([],{hour:'2-digit',minute:'2-digit'});
const div=document.createElement('div'); div.className=`msg ${role}`;
div.innerHTML=`<div class="msg-meta">${role==='user'?'You':'QueryMind'} · ${now}</div><div class="bubble">${html}</div>`;
chat.appendChild(div); chat.scrollTop=chat.scrollHeight; return div;
}
let tc=0;
function addThinking(){
const id='think-'+(++tc), div=document.createElement('div');
div.id=id; div.className='msg assistant';
div.innerHTML=`<div class="msg-meta">QueryMind</div><div class="thinking"><span></span><span></span><span></span></div>`;
chat.appendChild(div); chat.scrollTop=chat.scrollHeight; return id;
}
function removeThinking(id){const el=document.getElementById(id);if(el)el.remove();}
function clearChat(){
chat.innerHTML=''; emptyState.style.display='';
chat.appendChild(emptyState); showToast('Chat cleared','success');
}
function escapeHtml(s){return String(s).replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>').replace(/"/g,'"');}
</script>
</body>
</html>
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