'use strict';

// ----------------------------------------------------------------------------
// DATA
// ----------------------------------------------------------------------------

const root = document.documentElement;

// HOME NAVIGATION DISPLAY //

const navEl = document.querySelector('.home__nav');
const navLinks = document.querySelectorAll('.home__nav-link');
const navImage = document.querySelector('.home__nav-image');
const circleTypes = [];

// VIDEO PLAYERS //

const galleryVideos = document.querySelectorAll('.gallery__video');
let videoPlayers = [];

// HEADER BAR ANIMATION //

const headerBar = document.querySelector('.header-bar');
let scrollOffset = 0;

// NAVIGATION MENU ANIMATION //

const mainNavBtn = document.querySelector('.header-bar__nav-button');
const mainNavMenu = document.querySelector('.header-bar__nav-menu');

// ----------------------------------------------------------------------------
// UTILS
// ----------------------------------------------------------------------------

// Convert rem to pixels by getting font-size CSS property
function convertRemToPixels(rem) {
    let fontSize = parseFloat(window.getComputedStyle(document.body).getPropertyValue('font-size'));
    return rem * fontSize;
}

// ----------------------------------------------------------------------------
// LOGIC
// ----------------------------------------------------------------------------

// HOME NAVIGATION DISPLAY //

// Calculate navigation grid inner width
function calculateNavGridInnerWidth() {
    if (root && navImage) {
        let navGridGapProperty = window.getComputedStyle(root).getPropertyValue('--home-nav-gap');
        let navGridGap = parseFloat(navGridGapProperty.slice(0, -3));
        return navImage.getBoundingClientRect().width + (convertRemToPixels(navGridGap) * 2);
    }
}

// Calculate navigation grid inner diagonal
function calculateNavGridInnerDiagonal() {
    return calculateNavGridInnerWidth() * Math.sqrt(2);
}

// Create new instance of CircleType for each navigation link, set radius and direction
function curveNavLinks() {
    if (navLinks.length !== 0 && circleTypes) {
        for (let i = 0; i < (navLinks.length - 2); i++) {
            circleTypes[i] = new CircleType(navLinks[i]);
            circleTypes[i].radius(calculateNavGridInnerWidth() / 2);
        }
        for (let i = (navLinks.length - 2); i < navLinks.length; i++) {
            circleTypes[i] = new CircleType(navLinks[i]);
            circleTypes[i].dir(-1);
            circleTypes[i].radius(calculateNavGridInnerWidth() / 2);
        }
    }
}

// Set --home-nav-item-translation CSS property
function setNavItemTranslationProperty() {
    let navItemTranslation = (calculateNavGridInnerDiagonal() - calculateNavGridInnerWidth()) / 2;
    if (root) {
        root.style.setProperty('--home-nav-item-translation', navItemTranslation + 'px');
    }
}

// Set navigation grid display depending on number of links
function setNavGridDisplay() {
    if (navEl && navLinks.length !== 0) {
        if (navLinks.length === 2) {
            navEl.classList.add('home__nav--2-items');
        } else if (navLinks.length === 3) {
            navEl.classList.add('home__nav--3-items');
        } else if (navLinks.length === 4) {
            navEl.classList.add('home__nav--4-items');
        }
        for (let i = 0; i < navLinks.length; i++) {
            navLinks[i].classList.add('home__nav-link--visible');
        }
    }
}

// Edit navigation links radius and translation on window resize event
function editNavLinksOnResize() {
    window.addEventListener('resize', function(e) {
        if (navLinks.length !== 0 && circleTypes) {
            for (let i = 0; i < navLinks.length; i++) {
                circleTypes[i].radius(calculateNavGridInnerWidth() / 2);
            }
        }
        setNavItemTranslationProperty();
    });
}

// Add wave up animation to a single letter and remove it on animationend event
function waveNavLetterUp(navLetter) {
    navLetter.classList.add('home__nav-letter--wave-up');
    navLetter.addEventListener('animationend', function(e) {
        navLetter.classList.remove('home__nav-letter--wave-up');
    });
}

// Add wave down animation to a single letter and remove it on animationend event
function waveNavLetterDown(navLetter) {
    navLetter.classList.add('home__nav-letter--wave-down');
    navLetter.addEventListener('animationend', function(e) {
        navLetter.classList.remove('home__nav-letter--wave-down');
    });
}

// Add wave up animation to every letters of a single link with a slight delay
function waveNavLinkUp(navLink) {
    let navLinkLetters = navLink.querySelectorAll('span');
    let animationDelay = 0;
    for (let i = 0; i < navLinkLetters.length; i++) {
        setTimeout(waveNavLetterUp, animationDelay, navLinkLetters[i]);
        animationDelay += 50;
    }
}

// Add wave down animation to every letters of a single link with a slight delay
function waveNavLinkDown(navLink) {
    let navLinkLetters = navLink.querySelectorAll('span');
    let animationDelay = 0;
    for (let i = 0; i < navLinkLetters.length; i++) {
        setTimeout(waveNavLetterDown, animationDelay, navLinkLetters[i]);
        animationDelay += 50;
    }
}

// Add wave (up or down) animation to every letters of each link on mouseover event
function waveNavLinksOnHover() {
    if (navLinks.length !== 0) {
        for (let i = 0; i < (navLinks.length - 2); i++) {
            navLinks[i].addEventListener('mouseover', function(e) {
                waveNavLinkUp(navLinks[i]);
            });
        }
        for (let i = (navLinks.length - 2); i < navLinks.length; i++) {
            navLinks[i].addEventListener('mouseover', function(e) {
                waveNavLinkDown(navLinks[i]);
            });
        }
    }
}

// VIDEO PLAYERS //

// Set up Plyr video players
function setUpVideoPlayers() {
    if (galleryVideos.length !== 0) {
        videoPlayers = Plyr.setup(galleryVideos, {
            controls: [
                'play-large',
                'play',
                'progress',
                'current-time',
                'duration',
                'mute',
                'volume',
                'settings',
                'fullscreen'
            ],
            settings: [
                'quality'
            ],
            i18n: {
                play: 'Lire',
                pause: 'Mettre sur pause',
                seek: 'Parcourir la piste audio',
                currentTime: 'Temps écoulé depuis le début de la piste audio',
                duration: 'Durée de la piste audio',
                volume: 'Ajuster le volume',
                mute: 'Couper le son',
                unmute: 'Activer le son',
                enterFullscreen: 'Activer le mode plein écran',
                exitFullscreen: 'Quitter le mode plein écran'
            },
            tooltips: {
                controls: true,
                seek: true
            },
            quality: {
                default: 720,
                options: [
                    1080,
                    720,
                    480,
                    360,
                    240,
                ]
            }
        });
    }
}

// Toggle videos full screen mode on Plyr enterfullscreen and exitfullscreen media events
function toggleVideosFullScreen() {
    if (videoPlayers.length !== 0) {
        for (let i = 0; i < videoPlayers.length; i++) {
            videoPlayers[i].on('enterfullscreen', function(e) {
                galleryVideos[i].classList.add('gallery__video--full-screen');
            });
            videoPlayers[i].on('exitfullscreen', function(e) {
                galleryVideos[i].classList.remove('gallery__video--full-screen');
            });
        }
    }
}

// HEADER BAR ANIMATION //

// Toggle header bar depending on scroll
function toggleHeaderBar() {
    if (headerBar) {
        let headerBarHeight = headerBar.getBoundingClientRect().height;
        if (window.pageYOffset > headerBarHeight) { // Scroll down past header bar height
            headerBar.classList.add('header-bar--fixed');
        } else if (window.pageYOffset <= 0) {
            headerBar.classList.remove('header-bar--fixed');
            headerBar.classList.remove('header-bar--visible');
        }
        if (headerBar.classList.contains('header-bar--fixed')) {
            if (scrollOffset < window.pageYOffset) { // Scroll down
                headerBar.classList.remove('header-bar--visible');
            } else if (scrollOffset > window.pageYOffset) { // Scroll up
                headerBar.classList.add('header-bar--visible');
            }
            scrollOffset = window.pageYOffset;
        }
    }
}

// NAVIGATION MENU ANIMATION //

// Show main navigation menu on button click event
function showMainNavMenu() {
    if (mainNavBtn && mainNavMenu) {
        mainNavBtn.addEventListener('click', function(e) {
            mainNavBtn.classList.toggle('header-bar__nav-button--custom-focus');
            mainNavMenu.classList.toggle('header-bar__nav-menu--visible');
            // document.body.classList.toggle('body--hidden-overflow-y');
        });
    }
}

// ----------------------------------------------------------------------------
// PROGRAM
// ----------------------------------------------------------------------------

// Enable CSS :active pseudo-class in Safari Mobile
document.addEventListener("touchstart", function() {},false);

// HOME NAVIGATION DISPLAY //

window.addEventListener('load', function() {
    curveNavLinks();
    setNavItemTranslationProperty();
    setNavGridDisplay();
    editNavLinksOnResize();
    waveNavLinksOnHover();
});

// VIDEO PLAYERS //

setUpVideoPlayers();
toggleVideosFullScreen();

// HEADER BAR ANIMATION //

document.addEventListener('scroll', function() {
    toggleHeaderBar();
});

// NAVIGATION MENU ANIMATION //

showMainNavMenu();