<!--
Copyright © 2023 Lee Yingtong Li (RunasSudo)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>PBS medicine search</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css" integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.2/font/bootstrap-icons.css" integrity="sha256-4RctOgogjPAdwGbwq+rxfwAmSpZhWaafcZR9btzUk18=" crossorigin="anonymous">
<style type="text/css">
#search-results ul { margin-top: 0.5em; margin-bottom: 0 }
.popover { max-width: 400px }
</style>
</head>
<body>
<nav class="navbar navbar-expand-sm navbar-light bg-light d-print-none">
<div class="container">
<a class="navbar-brand" href="#">PBS medicine search</a>
<div class="collapse navbar-collapse justify-content-end">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="https://yingtongli.me/git/MedicineSearch">Source code</a>
</li>
</ul>
</div>
</div>
</nav>
<div class="container pt-4" id="loading-page">
<div class="text-center" id="loading-content">
<div class="spinner-border" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="mt-2">
Loading…
</div>
</div>
<div id="app-content" style="display:none">
<div>
<input class="form-control" id="search-input" placeholder="Search…" autocomplete="off">
</div>
<div>
<table id="search-results" class="table mt-2">
<thead>
<tr>
<th class="col-1">Item code</th>
<th class="col-8">Drug</th>
<th class="col-1">Quantity</th>
<th class="col-1">Repeats</th>
<th class="col-1">Restriction</th>
</tr>
</thead>
<tbody>
<td colspan="5" class="text-center">Enter a search term above to show results</th>
</tbody>
</table>
</div>
</div>
<footer class="border-top pt-4 mt-4">
<p class="text-muted">Results sourced from the PBS database as at January 2023. This tool is made available in the hope that it will be useful, but <b>WITHOUT ANY WARRANTY</b>; without even the implied warranty of <b>MERCHANTABILITY</b> or <b>FITNESS FOR A PARTICULAR PURPOSE</b>. Information provided in this tool is intended for reference by medical professionals. Nothing in this tool is intended to constitute medical advice.</p>
</footer>
</div>
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<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-kenU1KFdBIe4zVF0s0G1M5b4hcpxyD9F7jL+jjXkk+Q2h455rYXK/7HAuoJl+0I4" crossorigin="anonymous"></script>
<script src="autocomplete.js"></script>
<script src="https://cdn.jsdelivr.net/npm/sql.js@1.8.0/dist/sql-wasm.min.js"></script>
<script>
var db; // Keep in global namespace for debugging
async function main() {
// Load SQLite database
const sqlPromise = initSqlJs({
locateFile: file => ('https://cdn.jsdelivr.net/npm/sql.js@1.8.0/dist/' + file)
});
const dataPromise = fetch('database.db').then(res => res.arrayBuffer());
const [SQL, buf] = await Promise.all([sqlPromise, dataPromise])
db = new SQL.Database(new Uint8Array(buf));
// Initialise search bar
const mp_preferred_terms = execAsScalars(db.prepare('SELECT preferred_term FROM pbs_mp ORDER BY LOWER(preferred_term)'));
let data = mp_preferred_terms.map(mp_preferred_term => ({'label': mp_preferred_term, 'preview': mp_preferred_term, 'value': mp_preferred_term}));
const tpp_brand_names = execAsObjects(db.prepare('SELECT * FROM pbs_mp_brand_name LEFT JOIN pbs_mp ON pbs_mp_brand_name.mp_code = pbs_mp.code ORDER BY LOWER(brand_name)'));
data = data.concat(tpp_brand_names.map(tpp_brand_name => ({'label': tpp_brand_name['brand_name'], 'preview': tpp_brand_name['brand_name'] + ' <span class="text-muted">(' + tpp_brand_name['preferred_term'] + ')</span>', 'value': tpp_brand_name['preferred_term']})));
const autocomplete = new Autocomplete(document.getElementById('search-input'), {
data: data,
maximumItems: 20,
threshold: 2,
onSelectItem: onClickSearchItem
});
// Hide loading spinner
document.getElementById('loading-content').style.display = 'none';
document.getElementById('app-content').style.display = 'block';
}
function onClickSearchItem(item) {
// Override label if clicked on a trade name
document.getElementById('search-input').value = item.value;
// Find matching PBS items
let stmt = db.prepare('SELECT * FROM pbs_item LEFT JOIN (SELECT code AS mpp_code, preferred_term AS mpp_preferred_term, mp_code FROM pbs_mpp) AS pbs_mpp ON pbs_item.mpp_code = pbs_mpp.mpp_code LEFT JOIN (SELECT code AS mp_code, preferred_term AS mp_preferred_term FROM pbs_mp) AS pbs_mp ON pbs_mpp.mp_code = pbs_mp.mp_code WHERE LOWER(mp_preferred_term) = ?');
stmt.bind([item.value.toLowerCase()]);
const items = execAsObjects(stmt);
items.sort(comparePBSItems);
// Update table
const tbody = document.querySelector('#search-results tbody');
tbody.innerHTML = '';
for (let item of items) {
// Get restrictions
stmt = db.prepare('SELECT *, (SELECT COUNT(*) FROM pbs_restriction_criteria WHERE pbs_restriction_criteria.restriction_code = pbs_restriction.code) AS num_criteria FROM pbs_restriction LEFT JOIN pbs_item_restriction ON pbs_restriction.code = pbs_item_restriction.restriction_code WHERE pbs_item_restriction.item_code = ?');
stmt.bind([item['code']]);
const restrictions = execAsObjects(stmt);
const tr = document.createElement('tr');
let td = document.createElement('td'); td.innerHTML = '<a href="https://www.pbs.gov.au/medicine/item/' + item['code'] + '" target="_blank">' + item['code'] + '</a>'; tr.appendChild(td);
td = document.createElement('td');
let div = document.createElement('div'); div.innerText = item['mpp_preferred_term']; td.appendChild(div);
if (restrictions.length > 0) {
let ulRestrictions = document.createElement('ul');
for (let restriction of restrictions) {
let li = document.createElement('li');
ulRestrictions.appendChild(li);
li.innerHTML = restriction['indication'];
if (item['benefit_type'] === 'streamlined') {
li.innerHTML += ' (' + restriction['treatment_of'] + ')';
}
if (restriction['num_criteria'] > 0) {
li.innerHTML += ' ';
let span = document.createElement('span');
span.classList.add('text-muted');
span.innerText = '(' + restriction['num_criteria'] + ' criteria)';
li.appendChild(span);
// Create popover for criteria
new bootstrap.Popover(span, {
trigger: 'hover focus',
title: restriction['indication'],
content: restriction['criteria_rendered'],
html: true
});
}
}
td.appendChild(ulRestrictions);
}
tr.appendChild(td);
td = document.createElement('td'); td.innerText = item['maximum_prescribable_units']; tr.appendChild(td);
td = document.createElement('td'); td.innerText = item['number_repeats']; tr.appendChild(td);
if (item['benefit_type'] === 'unrestricted') {
td = document.createElement('td'); tr.appendChild(td);
} else if (item['benefit_type'] === 'restricted') {
td = document.createElement('td'); td.innerHTML = '<a href="https://www.pbs.gov.au/medicine/item/' + item['code'] + '" target="_blank">Restricted</a>'; tr.appendChild(td);
tr.classList.add('table-warning');
} else if (item['benefit_type'] === 'streamlined') {
td = document.createElement('td'); td.innerHTML = '<a href="https://www.pbs.gov.au/medicine/item/' + item['code'] + '" target="_blank">Streamlined</a>'; tr.appendChild(td);
tr.classList.add('table-warning');
} else if (item['benefit_type'] === 'authority') {
td = document.createElement('td'); td.innerHTML = '<a href="https://www.pbs.gov.au/medicine/item/' + item['code'] + '" target="_blank">Authority</a>'; tr.appendChild(td);
tr.classList.add('table-danger');
} else {
alert('Unknown benefit type: ' + item['benefit_type']);
throw 'Unknown benefit type: ' + item['benefit_type'];
}
tbody.appendChild(tr);
}
}
const regexIsNumber = /^[0-9]+$/.compile();
function comparePBSItems(item1, item2) {
// Sort tablets/capsules before other forms
if ((item1['mpp_preferred_term'].indexOf(' tablet, ') >= 0 || item1['mpp_preferred_term'].indexOf(' capsule, ') >= 0) && !(item2['mpp_preferred_term'].indexOf(' tablet, ') >= 0 || item2['mpp_preferred_term'].indexOf(' capsule, ') >= 0)) {
return -1;
}
if ((item2['mpp_preferred_term'].indexOf(' tablet, ') >= 0 || item2['mpp_preferred_term'].indexOf(' capsule, ') >= 0) && !(item1['mpp_preferred_term'].indexOf(' tablet, ') >= 0 || item1['mpp_preferred_term'].indexOf(' capsule, ') >= 0)) {
return 1;
}
// Compare mpp_preferred_term word-by-word accounting for numbers and units
const bits1 = item1['mpp_preferred_term'].split(' ');
const bits2 = item2['mpp_preferred_term'].split(' ');
for (let i = 0; i < bits1.length && i < bits2.length; i++) {
if (regexIsNumber.test(bits1[i]) && regexIsNumber.test(bits2[i])) {
// Numeric compare
let num1 = parseInt(bits1[i]);
let num2 = parseInt(bits2[i]);
// Check for units - convert to grams
if (bits1.length > i + 1 && bits1[i + 1] == 'microgram') {
num1 /= 1000000;
}
if (bits1.length > i + 1 && bits1[i + 1] == 'mg') {
num1 /= 1000;
}
if (bits2.length > i + 1 && bits2[i + 1] == 'microgram') {
num2 /= 1000000;
}
if (bits2.length > i + 1 && bits2[i + 1] == 'mg') {
num2 /= 1000;
}
if (num1 < num2) {
return -1;
}
if (num1 > num2) {
return 1;
}
} else {
// String compare
if (bits1[i] < bits2[i]) {
return -1;
}
if (bits1[i] > bits2[i]) {
return 1;
}
}
}
// Sort unrestricted, then restricted/streamlined, then authority required
const type1 = item1['benefit_type'] === 'unrestricted' ? 0 : item1['benefit_type'] === 'restricted' ? 1 : item1['benefit_type'] === 'streamlined' ? 1 : 2;
const type2 = item2['benefit_type'] === 'unrestricted' ? 0 : item2['benefit_type'] === 'restricted' ? 1 : item2['benefit_type'] === 'streamlined' ? 1 : 2;
return type1 - type2;
}
function execAsScalars(stmt) {
let results = [];
while (stmt.step()) {
results.push(stmt.get()[0]);
}
stmt.free();
return results;
}
function execAsObjects(stmt) {
let results = [];
while (stmt.step()) {
results.push(stmt.getAsObject());
}
stmt.free();
return results;
}
function groupBy(array, grouper) {
// Array.prototype.group not yet supported in most (any) browsers
return array.reduce(function(result, item) {
(result[grouper(item)] = result[grouper(item)] || []).push(item);
return result;
}, {});
};
main();
</script>
</body>
</html>