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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/@picocss/pico@1/css/pico.min.css">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<main class="container">
<h1>iNeedATitle</h1>
<p id="database-loading"><b>Loading database...</b></p>
<form>
<textarea id="output" rows="10" cols="80" disabled></textarea>
<input type="text" id="query" value="SELECT COUNT(*) FROM raw_data" style="width: 100%">
<br>
<button type="button" value="Run Raw Query" onclick="run()" disabled>Run Raw Query</button>
</form>
<hr>
<section>
<h2>Queries</h2>
<h3>By Instructor</h3>
<p>Find classes, and average grade for a given instructor</p>
<p>Note: Since the instructor names are provided in the format Last Name, First Name, it is best if you start typing the last name first.</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()" disabled>Get Classes & Average Grades</button>
<form>
<div id="table-container"></div>
</form>
<hr>
<h3>By Class Code</h3>
<p>Note: There is a space between the subject and course code. For example, "CSCI 1300"</p>
<label for="classCode">Class Code</label>
<input type="text" id="classCode" name="classCode" list="classCodes">
<datalist id="classCodes" class="classCodeDatalist">
</datalist>
<button type="button" onclick="getClassesByClassCode()" disabled>Get Instructors & Average Grades</button>
<form>
<div id="table-container-class-codes"></div>
</form>
</section>
<br>
<br>
</main>
<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);
}
let classCodeQuery = "SELECT DISTINCT Subject || ' ' || Course AS ClassCode FROM raw_data"
const classCodeResults = db.exec(classCodeQuery);
const classCodeResult = classCodeResults[0];
const classCodeColumns = classCodeResult.columns;
const classCodeRows = classCodeResult.values;
let classCodeDatalist = document.getElementById("classCodes");
for (let i = 0; i < classCodeRows.length; i++) {
let option = document.createElement("option");
option.value = classCodeRows[i][0];
classCodeDatalist.appendChild(option);
}
document.getElementById("database-loading").textContent = "Database loaded!";
let buttons = document.getElementsByTagName("button");
for (let i = 0; i < buttons.length; i++) {
buttons[i].disabled = false;
}
}
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 Subject || ' ' || Course as "Class", CourseTitle as "Title", GROUP_CONCAT(DISTINCT YearTerm) AS YearTerms, ROUND(AVG(AVG_GRD), 2) AS AverageGrade, ROUND(AVG(PCT_A), 2) as "% A", ROUND(AVG(PCT_B), 2) as "% B", ROUND(AVG(PCT_C_MINUS_OR_BELOW), 2) as "% <= C-" FROM raw_data AS main WHERE insname1 = "${instructor.toUpperCase()}" OR insname2 = "${instructor.toUpperCase()}" OR insname3 = "${instructor.toUpperCase()}" 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 getClassesByClassCode() {
let classCode = document.getElementById("classCode").value;
let query = `SELECT YearTerm as "Year-Term", insname1 as Instructor, AVG_GRD as "Average Grade", PCT_A as "% A", PCT_B as "% B", PCT_C_MINUS_OR_BELOW as "% <= C-" FROM raw_data WHERE Subject || ' ' || Course = '${classCode.toUpperCase()}';`
const results = db.exec(query);
const result = results[0];
const columns = result.columns;
const rows = result.values;
const tableContainer = document.getElementById("table-container-class-codes");
const table = document.createElement("table");
const thead = document.createElement("thead");
const tbody = document.createElement("tbody");
const headerRow = document.createElement("tr");
for (let i = 0; i < columns.length; i++) {
const headerCell = document.createElement("th");
headerCell.textContent = columns[i];
headerRow.appendChild(headerCell);
}
thead.appendChild(headerRow);
for (let i = 0; i < rows.length; i++) {
const row = document.createElement("tr");
for (let j = 0; j < rows[i].length; j++) {
const cell = document.createElement("td");
if (columns[j] === "Year-Term") {
cell.textContent = convertYearTerm(rows[i][j]);
} else if (!isNaN(rows[i][j]) && rows[i][j] !== null) {
cell.textContent = parseFloat(rows[i][j]).toFixed(2);
} else {
cell.textContent = rows[i][j];
}
row.appendChild(cell);
}
tbody.appendChild(row);
}
table.appendChild(thead);
table.appendChild(tbody);
tableContainer.innerHTML = "";
tableContainer.appendChild(table);
}
function convertYearTerm(yearTerms) {
// Convert yearTerms to a string if it's not
if (typeof yearTerms !== 'string') {
yearTerms = String(yearTerms);
}
return yearTerms.split(',').map(term => {
const year = term.slice(0, 4); // Assuming the year is 2000+
const termCode = term.slice(-1); // Getting the last character for the term
let termName = '';
switch (termCode) {
case '1':
termName = 'Spring';
break;
case '4':
termName = 'Summer';
break;
case '7':
termName = 'Fall';
break;
default:
termName = 'Unknown';
}
return `${termName} ${year}`;
}).join(', ');
}
</script>
</body>
</html>
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