summaryrefslogblamecommitdiffstats
path: root/js/grades.js
blob: 9994596eaae14a991ad59c423d1ab9079d49580a (plain) (tree)
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// const API_ENDPOINT = "https://gimb.tk/test.php"; // deprecated
let checkbox_state = false;
var grades;
async function checkLogin() {
    localforage.getItem("logged_in").then((value) => {
        // This code runs once the value has been loaded
        // from the offline store.
        if (value !== true) {
            window.location.replace("/index.html");
        }
    }).catch((err) => {
        // This code runs if there were any errors
        console.log(err);
    });
}

// Set loading bar visibility
function setLoading(state) {
    if (state) {
        $("#loading-bar").removeClass("hidden");
    } else {
        $("#loading-bar").addClass("hidden");
    }
}

async function loadGrades(force_refresh = false) {
	setLoading(true);
	let promises_to_run = [
		localforage.getItem("username").then((value) => {
			username = value;
		}),
		localforage.getItem("password").then((value) => {
			password = value;
		}),
		localforage.getItem("grades").then((value) => {
			grades = value;
		})
	];
	await Promise.all(promises_to_run);
	// If we don't have a list of grades, fetch it
	if (grades === null || grades === [] || force_refresh) {
		try {

			let gsecInstance = new gsec();
			await gsecInstance.login(username, password);

			gsecInstance.fetchGrades().then( (value) => {
				grades = value;
				localforage.setItem("grades", value).then((value) => {
					displayGrades();
					setLoading(false);
				});
				setLoading(false);
			}).catch( (err) => {
				gsecErrorHandlerUI(err);
				setLoading(false);
			});

		} catch (err) {
			gsecErrorHandlerUI(err);
			setLoading(false);
		}

	} else {
		displayGrades();
		setLoading(false);
	}
}

function displayGrades() {
	let grades_by_subject = {};
	grades.forEach((grade, index) => {
		if (!(grade["subject"] in grades_by_subject)) {
			grades_by_subject[grade["subject"]] = [];
		}

		let grade_object = {
			date: dateString.longFormatted(grade["date"]),
			teacher: grade["teacher"],
			subject: grade["subject"],
			title: grade["name"][0],
			type: grade["name"][1],
			term: grade["name"][2],
			grade: grade["grade"],
			temporary: grade["temporary"],
			index: index
		}
		grades_by_subject[grade["subject"]].push(grade_object);

	});

	let root_element = document.getElementById("grades-collapsible");
	Object.keys(grades_by_subject).forEach((subject) => {
		// Create root element for a subject entry
		let subject_entry = document.createElement("li");
		// Create subject collapsible header
		let subject_header = document.createElement("div");
		subject_header.classList.add("collapsible-header");
		subject_header.classList.add("collapsible-header-root");
		// Create header text element
		let subject_header_text = document.createElement("span");
		subject_header_text.innerText = subject;
		// Create collection for displaying individuals grades
		let subject_body = document.createElement("div");
		subject_body.className = "collapsible-body";
		let subject_body_root = document.createElement("ul");
		subject_body_root.className = "collection";
		// Setup variables for calculating average
		let grade_sum = 0;
		let grade_tot = 0;
		grades_by_subject[subject].forEach((grade) => {
			// Create element for individual grade
			let grade_node = document.createElement("li");
			grade_node.className = "collection-item";
			grade_node.classList.add("collection-item")
			grade_node.classList.add("grade-node");
			grade_node.dataset["index"] = grade["index"];
			let grade_node_div = document.createElement("div");
			// Node for date and subject text
			let grade_text = document.createElement("span");
			// Node for the actual number
			let grade_number = document.createElement("div");
			grade_number.className = "secondary-content";
			// Apply different style, if the grade is temporary
			if (grade["temporary"]) {
				// Styling for text
				let grade_text_italic = document.createElement("i");
				grade_text_italic.innerText = grade["date"] + " - " + grade["title"];
				grade_text.appendChild(grade_text_italic);
				// Styling for number
				let grade_number_italic = document.createElement("i");
				grade_number_italic.innerText = grade["grade"].toString();
				grade_number.appendChild(grade_number_italic);
			} else {
				// Text
				grade_text.innerText = grade["date"] + " - " + grade["title"];
				// Number
				grade_number.innerText = grade["grade"].toString();
			}
			grade_node_div.appendChild(grade_text);
			grade_node_div.appendChild(grade_number);
			grade_node.appendChild(grade_node_div);
			// Count the grade only if it's not temporary or explicitly enabled
			if (!grade["temporary"] || !checkbox_state) {
				grade_sum += grade["grade"];
				grade_tot += 1;
			}
			subject_body_root.appendChild(grade_node);
		});
		let grade_average = (grade_tot === 0) ? "N/A" : (Math.round(((grade_sum / grade_tot) + Number.EPSILON) * 100) / 100);
		let subject_header_average = document.createElement("div");
		subject_header_average.className = "collapsible-header-right";
		subject_header_average.innerText = grade_average.toString();
		subject_header.appendChild(subject_header_text);
		subject_header.appendChild(subject_header_average);
		subject_body.append(subject_body_root);
		subject_entry.append(subject_header);
		subject_entry.append(subject_body);
		root_element.append(subject_entry);
	});
	$("#grades-collapsible").append(root_element);
	refreshClickHandlers();
}

function clearGrades() {
    const table = document.getElementById("grades-collapsible");
    while (table.firstChild) {
        table.removeChild(table.firstChild);
    }
}

function refreshGrades(force) {
    clearGrades();
    loadGrades(force);
}

function refreshClickHandlers() {
	$("#grades-collapsible").find(".collection-item.grade-node").click(function () {
		let grade_obj = grades[parseInt(this.dataset["index"])];
		document.getElementById("grade-header").innerText = grade_obj["subject"] + ": " + grade_obj["grade"];
		document.getElementById("grade-date").innerText = dateString.longFormatted(grade_obj["date"]);
		document.getElementById("grade-title").innerText = grade_obj["name"][0];
		document.getElementById("grade-type").innerText = S("type") + ": " + grade_obj["name"][1];
		let term_element = document.getElementById("grade-term");
		if (grade_obj["name"][2] !== "") {
			term_element.innerText = S("term") + ": " + grade_obj["name"][2];
			term_element.style["display"] = "";
		} else {
			term_element.style["display"] = "none";
		}
		document.getElementById("grade-teacher").innerText = S("teacher") + ": " + grade_obj["teacher"];
		let temporary_object = document.getElementById("grade-temporary");
		let temporary_object_root = document.getElementById("grade-temporary-root");
		if (grade_obj["temporary"]) {
			temporary_object.innerText = "(" + S("temporary") + ")";
			temporary_object_root.style["display"] = "";
		} else {
			temporary_object_root.style["display"] = "none";
		}
		const modal = document.querySelectorAll('.side-modal')[0];
		M.Sidenav.getInstance(modal).open();
	});
}

// Initialization code
document.addEventListener("DOMContentLoaded", async () => {
	checkLogin();
	let coll_elem = document.querySelectorAll('.collapsible');
	let coll_instance = M.Collapsible.init(coll_elem, {});
	// Setup refresh handler
	$("#refresh-icon").click(function () {
		refreshGrades(true);
	});
	// Setup checkbox handler
	$("#permanent-grades-checkbox").change(function () {
		checkbox_state = this.checked;
		refreshGrades(false);
	});
	let elems = document.querySelectorAll('.modal');
	let instances = M.Modal.init(elems, {});
	// Setup side menu
	const menus = document.querySelectorAll('.side-menu');
	M.Sidenav.init(menus, { edge: 'right', draggable: true });
	// Setup side modal
	const modals = document.querySelectorAll('.side-modal');
	M.Sidenav.init(modals, { edge: 'left', draggable: false });
	clearGrades();
	await loadGrades();
});