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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>ESP node</title>
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<style>
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html { font-family:sans-serif }
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table { border-collapse:collapse; }
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td,th { padding: 4px 10px; min-width: 65px; }
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td { min-width: 70px; }
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th { text-align:left; }
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tbody th { text-align:center; }
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tbody th {border-right: 1px solid black;}
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thead th { text-align:center;padding-top:0; }
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td { text-align:right; }
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td[c],[c] td { text-align:center; }
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td[l],[l] td { text-align:left; }
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td[r],[r] td { text-align:right; }
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td[ed] {cursor:pointer;}
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td[ed]:hover {text-decoration:underline;}
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table[thl] tbody th {text-align:left;}
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figure {
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border-top:3px solid black;
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border-bottom:3px solid black;
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display: inline-block;
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padding: 5px 0;
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margin: 0 0 15px 15px;
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}
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thead tr { border-bottom: 2px solid black; }
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</style>
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</head>
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<body>
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<h1>ESP node {version}</h1>
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<p>Air quality monitor</p>
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<ul>
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<li><a href="/sample">Sample</a>
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<li><a href="/reboot">Restart node</a>
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</ul>
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<script>
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var kv_re = /^(-?[0-9.-]+)\s+(.+)$/;
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var Qi = function (x) { return document.getElementById(x) };
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var data = {};
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function update(data) {
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if (data) {
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var rows = data.split('\x1e');
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rows.forEach(function (v) {
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var kv = v.split('\x1f');
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var el = Qi(kv[0]);
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if (!el) return;
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var suf = '';
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var res = kv_re.exec(el.textContent);
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if (res) suf = ' ' + res[2];
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el.textContent = kv[1] + suf;
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data[kv[0]] = kv[1];
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});
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} else {
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var xhr=new XMLHttpRequest();
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xhr.onreadystatechange = function () {
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if (xhr.readyState===4){
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if (xhr.status===200) {
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update(xhr.responseText);
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}
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setTimeout(update, 1000);
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}
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};
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xhr.onerror = function () {
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setTimeout(update, 1000);
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};
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xhr.open('GET', '/data');
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xhr.send();
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}
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}
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function mkXhr() {
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var xhr=new XMLHttpRequest();
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xhr.onreadystatechange = function () {
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if (xhr.readyState===4 && xhr.status!==200) {
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alert(xhr.responseText || xhr.statusText || 'Request failed');
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}
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};
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return xhr;
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}
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function editOpt() {
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var k = this.id;
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var v = prompt(k+' =', data[k]||'');
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if (v !== null) {
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var xhr = mkXhr();
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xhr.open('POST', '/set');
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xhr.send("key="+k+'&value='+encodeURIComponent(v));
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}
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}
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function toggleOpt() {
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var xhr = mkXhr();
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xhr.open('POST', '/toggle');
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xhr.send("x="+this.id);
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}
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/*
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setTimeout(update, 500);
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for(var i=1;i<8;i++) {
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if(i<7) Qi('i'+i+'_max').addEventListener('click', editOpt);
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Qi('ch'+i+'_state').addEventListener('click', toggleOpt);
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}
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*/
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</script>
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