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+<!DOCTYPE html>
+<html>
+<head>
+ <title>Home</title>
+ <script src="https://cdnjs.cloudflare.com/ajax/libs/sql.js/1.9.0/sql-wasm.js" onload integrity="sha512-PAyD/84QEfxE1X/H3RDJY9kqXtJObyGq6qA93+LnkMNWdTLHjcTKHsDOcz6Y5xAdsaMGItRP5vNs4vtj3/FRuw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
+ <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/sakura.css/css/sakura.css" type="text/css">
+</head>
+
+<body>
+ <h1>iNeedATitle</h1>
+ <form>
+ <textarea id="output" rows="10" cols="80"></textarea>
+ <input type="text" id="query" value="SELECT COUNT(*) FROM raw_data" style="width: 100%">
+ <br>
+ <input type="button" value="Run Raw Query" onclick="run()">
+ </form>
+ <hr>
+ <h2>Queries</h2>
+ <h3>By Instructor</h3>
+ <p>Find classes, and average grade for a given instructor</p>
+ <label for="instructor">Instructor:</label>
+ <input type="text" id="instructor" name="instructor" list="instructors">
+ <datalist id="instructors" class="instructorDatalist">
+ </datalist>
+ <button type="button" onclick="getClassesByInstructor()">Get Class Averages</button>
+ <form>
+ <div id="table-container"></div>
+ <script type="text/javascript">
+ let SQL = undefined
+ let db = undefined
+
+ async function fetchDatabase(url) {
+ const response = await fetch(url);
+ if (!response.ok) {
+ throw new Error(`HTTP error! status: ${response.status}`);
+ }
+
+ const blob = await response.blob();
+ const buffer = await blob.arrayBuffer();
+ const uInt8Array = new Uint8Array(buffer);
+
+ db = new SQL.Database(uInt8Array);
+
+ // populate instructors
+
+ let query = "SELECT DISTINCT insname1 AS instructor_name FROM raw_data WHERE insname1 IS NOT NULL UNION SELECT DISTINCT insname2 FROM raw_data WHERE insname2 IS NOT NULL UNION SELECT DISTINCT insname3 FROM raw_data WHERE insname3 IS NOT NULL;"
+ const results = db.exec(query);
+
+ const result = results[0];
+ const columns = result.columns;
+ const rows = result.values;
+
+ let datalist = document.getElementById("instructors");
+
+ for (let i = 0; i < rows.length; i++) {
+ let option = document.createElement("option");
+ option.value = rows[i][0];
+ datalist.appendChild(option);
+ }
+
+
+ }
+
+ async function loadDatabase() {
+ SQL = await initSqlJs({
+ locateFile: file => `https://cdnjs.cloudflare.com/ajax/libs/sql.js/1.9.0/sql-wasm.wasm`
+ });
+ fetchDatabase("./grades.sqlite");
+ }
+
+ loadDatabase();
+
+ function run() {
+ const query = document.getElementById("query").value;
+ const results = db.exec(query);
+ const result = results[0];
+ const columns = result.columns;
+ const rows = result.values;
+ const output = document.getElementById("output");
+ output.value = JSON.stringify({columns, rows}, null, 2);
+ }
+
+function getClassesByInstructor() {
+ let instructor = document.getElementById("instructor").value;
+
+ let query = `SELECT CourseTitle, GROUP_CONCAT(DISTINCT YearTerm) AS YearTerms, MAX(Subject) AS Subject, MAX(Course) AS Course, ROUND(AVG(AVG_GRD), 2) AS AverageGrade FROM raw_data AS main WHERE insname1 = '${instructor}' OR insname2 = '${instructor}' OR insname3 = '${instructor}' GROUP BY CourseTitle`
+ console.log(query);
+
+ const results = db.exec(query);
+ const result = results[0];
+ const columns = result.columns;
+ const rows = result.values;
+ const tableContainer = document.getElementById("table-container");
+ const table = document.createElement("table");
+ const thead = document.createElement("thead");
+ const tbody = document.createElement("tbody");
+ const headerRow = document.createElement("tr");
+
+ for (let i = 0; i < columns.length; i++) {
+ const headerCell = document.createElement("th");
+ headerCell.textContent = columns[i];
+ headerRow.appendChild(headerCell);
+ }
+
+ thead.appendChild(headerRow);
+
+ for (let i = 0; i < rows.length; i++) {
+ const row = document.createElement("tr");
+ for (let j = 0; j < rows[i].length; j++) {
+ const cell = document.createElement("td");
+ if (columns[j] === "YearTerms") {
+ cell.textContent = convertYearTerm(rows[i][j]);
+ } else if (!isNaN(rows[i][j]) && rows[i][j] !== null) {
+ cell.textContent = parseFloat(rows[i][j]).toFixed(2);
+ } else {
+ cell.textContent = rows[i][j];
+ }
+ row.appendChild(cell);
+ }
+ tbody.appendChild(row);
+ }
+
+ table.appendChild(thead);
+ table.appendChild(tbody);
+ tableContainer.innerHTML = "";
+ tableContainer.appendChild(table);
+}
+
+function convertYearTerm(yearTerms) {
+ return yearTerms.split(',').map(term => {
+ const year = term.slice(0, 4); // Assuming the year is 2000+
+ const termCode = term.slice(-1); // Getting the last character for the term
+ let termName = '';
+ switch(termCode) {
+ case '1':
+ termName = 'Spring';
+ break;
+ case '4':
+ termName = 'Summer';
+ break;
+ case '7':
+ termName = 'Fall';
+ break;
+ default:
+ termName = 'Unknown';
+ }
+ return `${termName} ${year}`;
+ }).join(', ');
+}
+
+
+ </script>
+</body>
+</html>