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import { getCourseId, getUserIconUrl, getCourseParticipantsUrl } from "./config.js";
import { fetchGraduation } from "./graduation-common.js";
/**
* Class to represent Students.
*/
class Student {
graduation = null;
constructor(id, name, group) {
this.id = id;
this.name = name;
this.group = group;
}
async getIconUrl() {
return await getUserIconUrl(this.id);
}
getGroup() {
return this.group;
}
async getGraduation() {
if(!this.graduation) {
// fetchGraduation(this) sets this.graduation
await fetchGraduation(this);
}
return this.graduation;
}
static async fetchById(id) {
let name = "";
let group = "";
const res = await fetch(`/user/view.php?id=${id}&course=${getCourseId()}`);
const doc = new DOMParser().parseFromString(await res.text(), "text/html");
name = doc.querySelector("div.page-header-headings > h2").textContent;
const cards = doc.querySelectorAll("div.card-body dl");
for (const card of cards) {
if (card.querySelector("dt").textContent !== "Gruppe")
continue;
group = card.querySelector("dd > a").textContent;
break;
}
return new Student(id, name, group);
}
}
async function fetchStudent(idFilter, nameFilter, groupFilter) {
const students = await fetchStudents(idFilter, nameFilter, groupFilter);
return students[0];
}
// Cache the fetched students.
let students = [];
const idRegex = /id=(\d+)/;
async function fetchStudents(idFilter, nameFilter, groupFilter) {
if (students.size) {
return students;
}
const res = await fetch(getCourseParticipantsUrl());
const doc = new DOMParser().parseFromString(await res.text(), "text/html");
const table = doc.querySelector("tbody");
table.querySelectorAll("tr").forEach(row => {
if (row.classList.contains("emptyrow"))
return;
const roleCell = row.querySelector(".c4");
// TODO(muhq): Is this locale dependent?
if (roleCell.innerHTML.includes("Lehrer")) {
return;
}
const nameCell = row.querySelector(".c1");
let name;
if (nameCell.firstChild.firstChild.tagName == "SPAN")
name = nameCell.firstChild.firstChild.title;
else
name = nameCell.innerText;
const profileUrl = nameCell.querySelector("a.aabtn").href;
const match = idRegex.exec(profileUrl);
const id = match[1];
const groupCell = row.querySelector(".c5");
const group = groupCell.querySelector("a.quickeditlink").textContent;
if ((!idFilter || id === idFilter) &&
(!nameFilter || name.includes(nameFilter)) &&
(!groupFilter || group.includes(groupFilter)))
{
students.push(new Student(id, name, group));
}
});
return students;
}
export { Student, fetchStudents, fetchStudent };
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