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const API_ENDPOINT = "https://gimb.tk/test.php";
var calendar_obj = null;
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");
}
}
// GET COLOR FROM STRING
function hashCode(str) { // java String#hashCode
var hash = 0;
for (var i = 0; i < str.length; i++) {
hash = str.charCodeAt(i) + ((hash << 5) - hash);
}
return hash;
}
function intToRGB(i) {
var c = (i & 0x00FFFFFF)
.toString(16)
.toUpperCase();
return "00000".substring(0, 6 - c.length) + c;
}
// http://www.w3.org/TR/AERT#color-contrast
function getForegroundFromBackground(background_color) {
let color_hex = background_color.replace("#", "");
let rgb = [
parseInt(color_hex.substring(0, 2), 16),
parseInt(color_hex.substring(2, 4), 16),
parseInt(color_hex.substring(4, 6), 16)
];
let o = Math.round(((parseInt(rgb[0]) * 299) + (parseInt(rgb[1]) * 587) + (parseInt(rgb[2]) * 114)) / 1000);
if (o > 180) {
return "#000000";
} else {
return "#ffffff";
}
}
function getHexColorFromString(str) {
return "#" + intToRGB(hashCode(str));
}
// --------------------------------------------------
function getDateString() {
let date = new Date();
let year_str = date.getFullYear();
let month_str = date.getMonth() + 1
month_str = month_str.toString().padStart(2, "0");
let day_str = date.getDate();
day_str = day_str.toString().padStart(2, "0");
let date_string = year_str + "-" + month_str + "-" + day_str;
return date_string;
}
async function loadGradings(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("gradings").then((value) => {
gradings = value;
})
];
Promise.all(promises_to_run).then(() => {
if (gradings === null || gradings === [] || gradings === -1 || force_refresh) {
$.ajax({
url: API_ENDPOINT,
crossDomain: true,
data: {
"u": username,
"p": password,
"m": "fetchocenjevanja"
},
dataType: "json",
cache: false,
type: "GET",
success: (data) => {
// If data is null, the credentials were incorrect
if (data === null) {
UIAlert( S("requestFailed"), "loadGradings(): data === null; request failed");
setLoading(false);
} else {
// Save gradings & populate calendar
localforage.setItem("gradings", data).then((value) => {
gradings = value;
displayData();
setLoading(false);
});
}
},
error: () => {
UIAlert( S("noInternetConnection"), "loadGradings(): $.ajax:error" );
setLoading(false);
}
});
} else {
displayData();
setLoading(false);
}
});
}
function displayData() {
let transformed_gradings = [];
gradings.forEach((element, index) => {
let bg_color = getHexColorFromString(element["kratica"]);
let fg_color = getForegroundFromBackground(bg_color);
let grading_object = {
// Convert from dd.mm.yyyy to yyyy-mm-dd
start: element["datum"].split(".").reverse().join("-"),
title: element["kratica"],
id: index.toString(),
backgroundColor: bg_color,
textColor: fg_color
};
transformed_gradings.push(grading_object);
});
calendar_obj.removeAllEvents();
calendar_obj.addEventSource(transformed_gradings);
}
function gradingClickHandler(eventClickInfo) {
let grading_id = parseInt(eventClickInfo.event.id);
let grading_subject = gradings[grading_id]["predmet"];
let grading_date = gradings[grading_id]["datum"];
let grading_description = gradings[grading_id]["opis"];
document.getElementById("grading-subject").innerText = grading_subject;
document.getElementById("grading-date").innerText = grading_date;
document.getElementById("grading-description").innerText = grading_description;
const modal = document.querySelectorAll('.side-modal')[0];
M.Sidenav.getInstance(modal).open();
}
function setupPickers() {
// Setup pickers
var date_object = new Date();
let elems = document.querySelectorAll('#datepicker-add');
let options = {
autoClose: true,
format: "dd.mm.yyyy",
defaultDate: date_object,
setDefaultDate: true,
firstDay: 1
}
let instances = M.Datepicker.init(elems, options);
instances = M.Datepicker.init(elems, options);
}
document.addEventListener("DOMContentLoaded", () => {
checkLogin();
// Calendar setup
var calendarEl = document.getElementById("calendar");
calendar_obj = new FullCalendar.Calendar(calendarEl, {
firstDay: 1,
plugins: ["dayGrid"],
defaultDate: getDateString(),
navLinks: false,
editable: false,
events: [],
eventClick: gradingClickHandler,
height: "parent"
});
calendar_obj.render();
setupPickers();
loadGradings();
// Setup refresh handler
$("#refresh-icon").click(() => {
loadGradings(true);
});
// 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 });
});
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