"use strict";

$(document).ready(function () {
    $('#submitBtn').click(function () {
        generateLink();
    });

    $('#full-link').click(function () {
        let element = $('#full-link');
        let text = element.text()
        copyToClipboard(text);
        element.text('Copied!');
        setTimeout(function () {
            element.text(text);
        }, 2000);
    });
});

function copyToClipboard(text) {
    var $temp = $("<input>");
    $("#linkModal").append($temp);
    $temp.val(text).select();
    document.execCommand("copy");
    $temp.remove();
}

function generateLink() {
    // Clear paragraph
    $('#full-link').text('');


    let selectedCourseFromPicker = $('#coursename').val().toString();

    let raplaUser = '';
    let raplaFile = '';

    if (selectedCourseFromPicker === '-1') {
        let providedRaPlaLink = $('#raplalink').val().toString();
        if(providedRaPlaLink !== '') {
            const url = new URL(providedRaPlaLink);
            raplaUser = url.searchParams.get('user');
            raplaFile = url.searchParams.get('file');
        } else {
            $('#linkModalTitle').text('Oh No!');
            $('#raplalinkcontainer--link').text('Please provide either a course or a RaPla Link!');
            $('#raplalinkcontainer--closeButton').text('Gonna Do that!');
            return;
        }
    } else {
        let courseInfo = courseLinks[selectedCourseFromPicker];
        raplaUser = courseInfo.user;
        raplaFile = courseInfo.file;
    }

    let showBlockers = $('#hideBlockers').is(':checked') ? 0 : 1;
    let selectedElectiveModule = $('#wahlmodul').val().toString();
    let selectedProfileModule = $('#profilmodul').val().toString();

    let base_url = 'https://api.plutodev.de/rapla-middleware'

    base_url += '?user=' + raplaUser;
    base_url += '&file=' + raplaFile;
    base_url += '&blockers=' + showBlockers;
    base_url += '&wahl=' + selectedElectiveModule;
    base_url += '&pflicht=' + selectedProfileModule;

    $('#linkModalTitle').text('Your RaPla Link 🥳 ');
    $('#raplalinkcontainer--link').text('Here is the link that you can use for importing RaPla into your iCloud etc. calendar (click to copy)');
    $('#full-link').text(base_url);
    $('#raplalinkcontainer--closeButton').text('Thank you for using');
}

let courseLinks = {
    'TINF19B1': {user: 'freudenmann', file: 'TINF19B1'},
    'TINF19B2': {user: 'braun', file: 'TINF19B2'},
    'TINF19B3': {user: 'vollmer', file: 'tinf19b3'},
    'TINF19B4': {user: 'eisenbiegler', file: 'TINF19B4'},
    'TINF19B5': {user: 'strand', file: 'TINF19B5'},
    'TINF20B1': {user: 'freudenmann', file: 'TINF20B1'},
    'TINF20B2': {user: 'braun', file: 'TINF20B2'},
    'TINF20B3': {user: 'vollmer', file: 'tinf20b3'},
    'TINF20B4': {user: 'eisenbiegler', file: 'TINF20B4'},
    'TINF20B5': {user: 'strand', file: 'TINF20B5'}
}

/**
 * Calculates, in which semester the given course currently is
 * @param course The course to calculate the semester for
 * @returns {number} The number of the semester they are in
 */
function calculateSemester(course) {
    let yearRegex = new RegExp('[a-zA-Z]*([0-9]{2})B[0-9]');

    let match = yearRegex.exec(course);
    let startYear = '20';
    if (match !== null) {
        startYear += match[1];
    }

    let currentYear = new Date().getFullYear();

    let yearDifference = currentYear - startYear;

    let semesters = yearDifference * 2 + 1;

    return semesters;
}

/* Toggle Dark-Mode */

const toggleDarkMode = () => {
    let element = document.body;
    let navElement = document.getElementById('raplalinkcontainer--nav');
    let colorModeToggleIcon = document.getElementById('colorModeToggleIcon');
    let submitButton = document.getElementById('submitBtn');

    element.classList.toggle("body--dark-mode");
    navElement.classList.toggle("nav--dark-mode");
    submitButton.classList.toggle("submitButton--dark-mode");

    /* Dialog */
    let modalContents = document.getElementsByClassName('modal-toggle')

    for (let content of modalContents) {
        content.classList.toggle("modal--dark-mode")
    }

    if (colorModeToggleIcon.classList.contains("fa-moon")) {
        colorModeToggleIcon.classList.remove("fa-moon");
        colorModeToggleIcon.classList.add("fa-sun");
    } else {
        colorModeToggleIcon.classList.remove("fa-sun");
        colorModeToggleIcon.classList.add("fa-moon");
    }

}