initial commit of v1

barabo · Nov 19, 2019 · e8c3414 · e8c3414
1 parent f01777e
commit e8c3414
Show file tree

Hide file tree

Showing 8 changed files with 3,222 additions and 2 deletions.
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/README.md b/README.md
@@ -1,2 +1,76 @@
-# demo-auc-app
-A demonstration SMART app that serves AUC external guidance for PAMA
+# smart-auc-demo
+A demonstration SMART app that serves AUC external guidance for PAMA.
+
+Instructions
+------------
+
+```sh
+npm install
+npm run demo
+```
+
+Visit http://localhost:3001/ to log in (use any username and password)
+
+<img src="./images/login.png" alt="alt text" width="256">
+
+Select a patient age, gender, indication, and order to determine whether it
+is within recommended guidelines.
+
+  <div>
+    <form action="evaluate" method="POST">
+      <table>
+        <caption>Enter Patient Demographics</caption>
+        <tr>
+          <th><label for="gender">Gender</label></th>
+          <td>
+            <select name="gender" required>
+              <option value="male">Male</option>
+              <option value="female">Female</option>
+              <option value="other">Other</option>
+            </select>
+          </td>
+        </tr>
+        <tr>
+          <th><label for="age">Age</label></th>
+          <td><input name="age" required></td>
+        </tr>
+        <tr>
+          <th><label for="indication">Indication</label></th>
+          <td>
+            <input list="indications" name="indication" required>
+            <datalist id="indications">
+              <option value="13213009">congenital heart disease</option>
+              <option value="25064002">headache</option>
+              <option value="279039007">lower back pain</option>
+              <option value="423341008">optic disc edema</option>
+              <option value="27355003">toothache</option>
+            </datalist>
+          </td>
+        </tr>
+        <tr>
+          <th><label for="procedure">Procedure</label></th>
+          <td>
+            <input list="procedures" name="procedure">
+            <datalist id="procedures">
+              <option value="75561">cardiac mri</option>
+              <option value="70450">ct scan - no contrast material</option>
+              <option value="71275">cta - with contrast material</option>
+              <option value="72133">lumbar spine ct scan</option>
+              <option value="70544">mra - head</option>
+            </datalist>
+          </td>
+        </tr>
+      </table>
+      <input type="submit">
+    </form>
+  </div>
+
+V1 TODO
+-------
+
+- [x] Mock a simple UI on paper / in Visio
+- [x] Create a static page form to serve as the starting point
+  - [x] Fake sign-in
+  - [x] Enter Demographics (age and gender)
+  - [x] Select a condition
+  - [x] Select an appropriate imaging procedure
diff --git a/images/login.png b/images/login.png
diff --git a/index.html b/index.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+  <meta charset="utf-8">
+  <title>Demo AUC Guidance App</title>
+</head>
+
+<body>
+  <div>
+    <form action="evaluate" method="POST">
+      <table>
+        <caption>Enter Patient Demographics</caption>
+        <tr>
+          <th><label for="gender">Gender</label></th>
+          <td>
+            <select name="gender" required>
+              <option value="male">Male</option>
+              <option value="female">Female</option>
+              <option value="other">Other</option>
+            </select>
+          </td>
+        </tr>
+        <tr>
+          <th><label for="age">Age</label></th>
+          <td><input name="age" required></td>
+        </tr>
+        <tr>
+          <th><label for="indication">Indication</label></th>
+          <td>
+            <input list="indications" name="indication" required>
+            <datalist id="indications">
+              <option value="13213009">congenital heart disease</option>
+              <option value="25064002">headache</option>
+              <option value="279039007">lower back pain</option>
+              <option value="423341008">optic disc edema</option>
+              <option value="27355003">toothache</option>
+            </datalist>
+          </td>
+        </tr>
+        <tr>
+          <th><label for="procedure">Procedure</label></th>
+          <td>
+            <input list="procedures" name="procedure">
+            <datalist id="procedures">
+              <option value="75561">cardiac mri</option>
+              <option value="70450">ct scan - no contrast material</option>
+              <option value="71275">cta - with contrast material</option>
+              <option value="72133">lumbar spine ct scan</option>
+              <option value="70544">mra - head</option>
+            </datalist>
+          </td>
+        </tr>
+      </table>
+      <input type="submit">
+    </form>
+  </div>
+</body>
+
+</html>
diff --git a/index.js b/index.js
@@ -0,0 +1,114 @@
+"use strict";
+const express = require('express');
+const session = require('express-session');
+const bodyParser = require('body-parser');
+const path = require('path');
+const port = process.env.PORT || '3001';
+const login = `<a href="http://localhost:${port}/">login</a>`;
+
+const CPT = {
+  _FHIR_CODING_SYSTEM: 'http://www.ama-assn.org/go/cpt',
+  CARDIAC_MRI: '75561',
+  CT_HEAD_NO_CONTRAST: '70450',
+  CTA_WITH_CONTRAST: '71275',
+  LUMBAR_SPINE_CT: '72133',
+  MRA_HEAD: '70544',
+};
+
+const SNOMED = {
+  _FHIR_CODING_SYSTEM: 'http://snomed.info/sct',
+  CONGENITAL_HEART_DISEASE: '13213009',
+  HEADACHE: '25064002',
+  LOW_BACK_PAIN: '279039007',
+  OPTIC_DISC_EDEMA: '423341008',
+  TOOTHACHE: '27355003'
+};
+
+class Reasons {
+  static covers(subset, set) {
+    if (subset.size > set.size) {
+      return false;
+    }
+    for (const member of subset) {
+      if (!set.has(member)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  constructor(appropriate, notAppropriate) {
+    this.appropriate = appropriate.map(x => new Set(x));
+    this.notAppropriate = notAppropriate.map(x => new Set(x));
+  }
+
+  getRating(reasons) {
+    if (this.appropriate.filter(s => Reasons.covers(s, reasons)).length) {
+      return 'appropriate';
+    }
+    if (this.notAppropriate.filter(s => Reasons.covers(s, reasons)).length) {
+      return 'not-appropriate';
+    }
+    return 'no-guidelines-apply';
+  }
+}
+
+const cptReasons = {
+  'no-procedures-for': new Reasons([[SNOMED.TOOTHACHE]], []),
+  [CPT.CT_HEAD_NO_CONTRAST]: new Reasons([[SNOMED.HEADACHE, SNOMED.OPTIC_DISC_EDEMA]], []),
+  [CPT.MRA_HEAD]: new Reasons([], []),
+  [CPT.CTA_WITH_CONTRAST]: new Reasons([], [[SNOMED.CONGENITAL_HEART_DISEASE]]),
+  [CPT.LUMBAR_SPINE_CT]: new Reasons([], [[SNOMED.LOW_BACK_PAIN]]),
+  [CPT.CARDIAC_MRI]: new Reasons([[SNOMED.CONGENITAL_HEART_DISEASE]], []),
+};
+
+const app = express();
+app.use(session({
+  secret: 'secret',
+  resave: true,
+  saveUninitialized: true
+}));
+app.use(bodyParser.urlencoded({extended : true}));
+app.use(bodyParser.json());
+
+app.get('/', function(request, response) {
+  if (request.session.loggedin) {
+    response.redirect('/consult');
+  } else {
+    response.sendFile(path.join(__dirname + '/login.html'));
+  }
+});
+
+app.get('/consult', function(request, response) {
+  if (request.session.loggedin) {
+    response.sendFile(path.join(__dirname + '/index.html'));
+  } else {
+    response.send(`Please ${login} to view this page!`).end();
+  }
+});
+
+app.post('/evaluate', function(request, response) {
+  if (!request.session.loggedin) {
+    response.status(404).send(`You must ${login} to access this.`);
+  } else {
+    const reasons = cptReasons[request.body.procedure];
+    const rating = reasons.getRating(new Set([request.body.indication]));
+    response.status(200).send(rating);
+  }
+  response.end();
+});
+
+app.post('/auth', function(request, response) {
+  const username = request.body.username;
+  const password = request.body.password;
+  if (username && password) {
+    request.session.loggedin = true;
+    request.session.username = username;
+    response.redirect('/');
+  } else {
+    response.send('Please enter Username and Password!');
+  }
+  response.end();
+});
+
+app.listen(port);
diff --git a/login.html b/login.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<!-- See: https://codeshack.io/basic-login-system-nodejs-express-mysql/ -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Login</title>
+    <style>
+    .login-form {
+      width: 300px;
+      margin: 0 auto;
+      font-family: Tahoma, Geneva, sans-serif;
+    }
+    .login-form h1 {
+      text-align: center;
+      color: #4d4d4d;
+      font-size: 24px;
+      padding: 20px 0 20px 0;
+    }
+    .login-form input[type="password"],
+    .login-form input[type="text"] {
+      width: 100%;
+      padding: 15px;
+      border: 1px solid #dddddd;
+      margin-bottom: 15px;
+      box-sizing:border-box;
+    }
+    .login-form input[type="submit"] {
+      width: 100%;
+      padding: 15px;
+      background-color: #535b63;
+      border: 0;
+      box-sizing: border-box;
+      cursor: pointer;
+      font-weight: bold;
+      color: #ffffff;
+    }
+    </style>
+  </head>
+  <body>
+    <div class="login-form">
+      <h1>Login</h1>
+      <form action="auth" method="POST">
+        <input type="text" name="username" placeholder="Username" required>
+        <input type="password" name="password" placeholder="Password" required>
+        <input type="submit">
+      </form>
+    </div>
+  </body>
+</html>