'use strict';

/* ── Lazy background images (.set-bg / data-setbg) ──────────────────────
   Backgrounds are applied as their element approaches the viewport, so
   below-the-fold images (contactos, newsletter, footer) don't compete
   with the hero for bandwidth. */
(function () {
	var els = Array.prototype.slice.call(document.querySelectorAll('.set-bg'));
	function apply(el) {
		var bg = el.getAttribute('data-setbg');
		if (bg) el.style.backgroundImage = "url('" + bg + "')";
	}
	if ('IntersectionObserver' in window) {
		var io = new IntersectionObserver(function (entries) {
			entries.forEach(function (entry) {
				if (entry.isIntersecting) {
					apply(entry.target);
					io.unobserve(entry.target);
				}
			});
		}, { rootMargin: '300px 0px' });
		els.forEach(function (el) { io.observe(el); });
	} else {
		els.forEach(apply);
	}
})();

/* ── Back to top button ─────────────────────────────────────────────── */
document.addEventListener('DOMContentLoaded', function () {
    var btn = document.getElementById('backToTop');
    if (!btn) return;

    function toggleBtn() {
        if (window.scrollY > 400) btn.classList.add('visible');
        else btn.classList.remove('visible');
    }
    window.addEventListener('scroll', toggleBtn, { passive: true });
    btn.addEventListener('click', function () {
        window.scrollTo({ top: 0, behavior: 'smooth' });
    });
});


/* Scroll-reveal: elements fade + slide up as they enter viewport */
if ('IntersectionObserver' in window) {
    (function () {
        var observer = new IntersectionObserver(function (entries) {
            entries.forEach(function (entry) {
                if (entry.isIntersecting) {
                    entry.target.classList.add('revealed');
                    observer.unobserve(entry.target);
                }
            });
        }, { rootMargin: '0px 0px -60px 0px', threshold: 0.05 });

        // Target all cards, sections, and content blocks
        document.querySelectorAll(
            'section[id], .icon-box-item, .trainer-item, .schedule_box, ' +
            '.classes-section .col-lg-6, .contact-info-warp, .rounded_frame_grey'
        ).forEach(function (el) { observer.observe(el); });

        // Hero reveals immediately after preloader
        window.addEventListener('load', function () {
            var hero = document.querySelector('.hero-section');
            if (hero) hero.classList.add('revealed');
        });
    })();
}

/* Hide scroll hint after user scrolls the schedule */
document.addEventListener('DOMContentLoaded', function () {
    var panel = document.querySelector('.schedule_panel');
    var hint = document.querySelector('.schedule-scroll-hint');
    if (panel && hint) {
        panel.addEventListener('scroll', function () {
            hint.style.opacity = '0';
            hint.style.transition = 'opacity .3s';
            setTimeout(function () { hint.style.display = 'none'; }, 300);
        }, { once: true });
    }
});

/* ── Modalidades: clickable cards + CSS-animated marquee ────────────────────
   Cards reveal their description on click (one open at a time; Esc / outside
   click closes; Enter/Space for keyboard users). For the auto-scroll we move
   the cards into an inner .mod-track, duplicate the set once, and let a CSS
   transform animation glide it from 0 to -50% forever — a GPU-driven loop that
   actually moves (the old scrollLeft approach was defeated by sub-pixel
   rounding). It pauses on hover / focus and while a card is open. */
document.addEventListener('DOMContentLoaded', function () {
    var scroller = document.querySelector('.mod-scroll');

    // Build the animated track: move originals in, then append a hidden clone set.
    if (scroller && !scroller.querySelector('.mod-track')) {
        var track = document.createElement('div');
        track.className = 'mod-track';
        Array.prototype.slice.call(scroller.querySelectorAll('.mod-card'))
            .forEach(function (c) { track.appendChild(c); });
        Array.prototype.slice.call(track.children).forEach(function (c) {
            var clone = c.cloneNode(true);
            clone.setAttribute('aria-hidden', 'true');
            clone.setAttribute('tabindex', '-1');
            clone.removeAttribute('id');
            track.appendChild(clone);
        });
        scroller.appendChild(track);
        // Gentle, constant ~18px/s regardless of how many modalidades there are.
        // Measure after a frame so layout (card widths) is settled. Set with
        // !important so the reduced-motion .01ms!important override (active
        // over Remote Desktop / Windows "animation effects" off) can't shrink
        // the duration and turn the loop into a strobing blur.
        requestAnimationFrame(function () {
            var oneCopy = track.scrollWidth / 2;
            var dur = oneCopy > 0 ? Math.max(60, Math.round(oneCopy / 18)) : 220;
            track.style.setProperty('animation-duration', dur + 's', 'important');
        });
    }

    var cards = document.querySelectorAll('.mod-card.has-info');
    if (!cards.length) return;

    function anyOpen() { return !!document.querySelector('.mod-card.is-open'); }
    function syncPause() { if (scroller) scroller.classList.toggle('is-paused', anyOpen()); }
    function closeAll(except) {
        cards.forEach(function (card) {
            if (card === except) return;
            card.classList.remove('is-open');
            card.setAttribute('aria-expanded', 'false');
        });
    }

    cards.forEach(function (card) {
        card.addEventListener('click', function (e) {
            e.stopPropagation();
            var open = card.classList.toggle('is-open');
            card.setAttribute('aria-expanded', open ? 'true' : 'false');
            closeAll(card);
            syncPause();
        });
        card.addEventListener('keydown', function (e) {
            if (e.key === 'Enter' || e.key === ' ' || e.key === 'Spacebar') {
                e.preventDefault();
                card.click();
            } else if (e.key === 'Escape') {
                card.classList.remove('is-open');
                card.setAttribute('aria-expanded', 'false');
                syncPause();
            }
        });
    });
    document.addEventListener('click', function () { closeAll(null); syncPause(); });
});

/* ── Schedule day filter ─────────────────────────────────────────────────────
   The on-screen schedule shows the chosen day (phones) or that day centred
   between the day before and after (desktop ≥992px); a day-picker bar switches
   days (each header + class cell is tagged with data-day). Defaults to today
   when the gym is open that day, otherwise the first day. The JPG export is
   unaffected — its clone removes every .sched-hide and re-renders the full week. */
document.addEventListener('DOMContentLoaded', function () {
    // Works on the home page (#horario) and the CrossFit page (bare .schedule).
    var scope = document.querySelector('.schedule');
    if (!scope) return;
    var filter = scope.querySelector('.schedule-day-filter');
    var cells = scope.querySelectorAll('.schedule_cell, .schedule_dayhead');
    if (!filter || !cells.length) return;
    var buttons = filter.querySelectorAll('.sdf-btn');
    var labels = scope.querySelectorAll('.schedule_section_label');

    // Desktop shows three days — the chosen one centred between the day before
    // and the day after (wrapping round the week); phones show just the one.
    var wide = window.matchMedia('(min-width: 992px)');
    var week = Array.prototype.map.call(buttons, function (b) { return b.getAttribute('data-day'); });
    var current = null;

    // Toggle classes (not inline display) — .sched-hide carries !important so it
    // reliably wins, and the export clone simply strips it (and ignores the
    // .sched-pos-* columns) to show every day.
    function showDay(day) {
        current = day;
        var i = week.indexOf(day), n = week.length;
        var three = wide.matches && n >= 3;
        var visible = three ? [week[(i - 1 + n) % n], day, week[(i + 1) % n]] : [day];
        scope.classList.toggle('is-3day', three);
        cells.forEach(function (c) {
            var pos = visible.indexOf(c.getAttribute('data-day'));
            c.classList.toggle('sched-hide', pos === -1);
            c.classList.remove('sched-pos-1', 'sched-pos-2', 'sched-pos-3', 'sched-side');
            if (pos !== -1) {
                var col = three ? pos + 1 : 1;
                c.classList.add('sched-pos-' + col);
                if (three && col !== 2) c.classList.add('sched-side');
            }
        });
        buttons.forEach(function (b) {
            b.classList.toggle('active', b.getAttribute('data-day') === day);
        });
        // Show a Manhã / Tarde divider only when a visible day has a class in that block.
        labels.forEach(function (lbl) {
            var sec = lbl.getAttribute('data-section');
            var has = visible.some(function (d) {
                return !!scope.querySelector('.schedule_cell[data-day="' + d + '"][data-section="' + sec + '"]');
            });
            lbl.classList.toggle('sched-hide', !has);
        });
    }

    filter.addEventListener('click', function (e) {
        var btn = e.target.closest('.sdf-btn');
        if (btn) showDay(btn.getAttribute('data-day'));
    });
    // Clicking a side day's header centres it.
    scope.addEventListener('click', function (e) {
        var head = e.target.closest('.schedule_dayhead.sched-side');
        if (head) showDay(head.getAttribute('data-day'));
    });
    var reflow = function () { if (current) showDay(current); };
    if (wide.addEventListener) wide.addEventListener('change', reflow); else if (wide.addListener) wide.addListener(reflow);

    // Pre-select today when the schedule has a button for it (PT day names),
    // otherwise the first day.
    var ptDays = { 1: 'segunda', 2: 'terça', 3: 'quarta', 4: 'quinta', 5: 'sexta', 6: 'sábado' };
    var today = ptDays[new Date().getDay()];
    var todayBtn = today ? filter.querySelector('.sdf-btn[data-day="' + today + '"]') : null;
    var start = todayBtn || buttons[0];
    if (start) showDay(start.getAttribute('data-day'));
});

/* ── Contact form: stretch the message box to meet the map ───────────────────
   On desktop (≥992px, where the info+map column sits beside the form) the
   Mensagem textarea grows so its bottom lines up with the bottom of the compact
   map; the consent checkbox and submit button then follow just below it. Off on
   mobile, where everything is stacked. */
document.addEventListener('DOMContentLoaded', function () {
    var ta = document.querySelector('#contactos .contact-form textarea');
    var map = document.querySelector('#contactos .map-side');
    if (!ta || !map) return;
    var mq = window.matchMedia('(min-width: 992px)');

    function sync() {
        if (!mq.matches) { ta.style.height = ''; return; }
        ta.style.height = 'auto';                        // reset before measuring
        var taTop = ta.getBoundingClientRect().top;
        var mapBottom = map.getBoundingClientRect().bottom;
        ta.style.height = Math.max(150, Math.round(mapBottom - taTop)) + 'px';
    }

    sync();
    window.addEventListener('load', sync);               // re-measure once fonts/layout settle
    if (mq.addEventListener) mq.addEventListener('change', sync);
    var t;
    window.addEventListener('resize', function () { clearTimeout(t); t = setTimeout(sync, 150); }, { passive: true });
});


/* ── Equipa: detail card that grows out of the tile ─────────────────────────
   Desktop: hover (or keyboard focus) opens. The card is laid exactly over the
   tile photo, tilted like it, and the CSS unclips/straightens it sideways —
   to the right, or to the left (.td-flip) when there is no room. While open,
   the mouse drives a small 3D tilt + drift so it handles like a real card.
   Touch / narrow screens: tap opens a centred fixed card; a FLIP animation
   makes it fly out of (and back into) the tile photo. Esc, ×, outside tap close. */
document.addEventListener('DOMContentLoaded', function () {
    var items = document.querySelectorAll('.trainer-item.has-detail');
    if (!items.length) return;
    var floating = window.matchMedia('(max-width: 767px), (hover: none)');
    var reduced = window.matchMedia('(prefers-reduced-motion: reduce)');
    var section = document.getElementById('equipa');
    var CARD_W = 560, GUTTER = 16;

    function tileRot(item) {
        // #powerRotation tilts odd tiles -3deg and even ones +3deg (style.css).
        var col = item.parentElement, i = 0;
        while (col && (col = col.previousElementSibling)) i++;
        return (i % 2 === 1) ? 3 : -3;
    }

    // Desktop placement: photo column on top of the tile photo.
    function place(item) {
        var card = item.querySelector('.trainer-detail');
        var pic = item.querySelector('.trainer-pic');
        if (!card || !pic || floating.matches) return;
        var vw = document.documentElement.clientWidth;
        var w = Math.min(CARD_W, vw - GUTTER * 2);
        var pw = pic.offsetWidth, ph = pic.offsetHeight;
        var picLeft = item.getBoundingClientRect().left + pic.offsetLeft; // untransformed
        var flip = picLeft + w > vw - GUTTER;                             // no room on the right
        var x = flip ? pic.offsetLeft + pw - w : pic.offsetLeft;
        card.classList.toggle('td-flip', flip);
        card.style.setProperty('--td-w', w + 'px');
        card.style.setProperty('--td-pw', pw + 'px');
        card.style.setProperty('--td-ph', ph + 'px');
        card.style.setProperty('--td-x', x + 'px');
        card.style.setProperty('--td-y', pic.offsetTop + 'px');
        card.style.setProperty('--td-rot', tileRot(item) + 'deg');
        // Closed clip = just the photo square, in px (see style.css).
        card.style.setProperty('--td-cx', Math.max(0, w - pw) + 'px');
        card.style.setProperty('--td-cy', Math.max(0, card.offsetHeight - ph) + 'px');
    }

    function resetTilt(card) {
        ['--td-rx', '--td-ry', '--td-mx', '--td-my'].forEach(function (p) { card.style.removeProperty(p); });
        card.classList.remove('td-tracking');
    }

    // Touch: fly the fixed card out of / back into the tile photo.
    function flip(item, opening) {
        var card = item.querySelector('.trainer-detail');
        var pic = item.querySelector('.trainer-pic');
        if (!card || !pic || !card.animate || reduced.matches) return null;
        var p = pic.getBoundingClientRect(), c = card.getBoundingClientRect();
        if (!c.width || !c.height) return null;
        var from = 'translate(' + (p.left - c.left) + 'px,' + (p.top - c.top) + 'px) scale(' +
                   (p.width / c.width) + ',' + (p.height / c.height) + ') rotate(' + tileRot(item) + 'deg)';
        var frames = [{ transform: from, opacity: .4 }, { transform: 'none', opacity: 1 }];
        return card.animate(opening ? frames : frames.reverse(), {
            duration: opening ? 420 : 280,
            easing: opening ? 'cubic-bezier(.2,.9,.25,1)' : 'cubic-bezier(.4,0,1,1)'
        });
    }

    function setOpen(item, open) {
        var card = item.querySelector('.trainer-detail');
        var wasOpen = item.classList.contains('is-open');
        if (open === wasOpen) return;
        clearTimeout(item._tdTrack);
        if (open) {
            if (floating.matches) {
                item.classList.add('is-open');
                card.style.setProperty('--td-top', Math.max(24, (window.innerHeight - card.offsetHeight) / 2) + 'px');
                flip(item, true);
            } else {
                // Jump (no transition) to the closed pose on top of the tile, commit
                // it, then open — otherwise the closed state's own transition would
                // start moving from the previous pose and the opening would begin
                // from that half-way value instead of from the photo.
                card.style.transition = 'none';
                place(item);
                void card.offsetWidth;
                card.style.transition = '';
                void card.offsetWidth;
                item.classList.add('is-open');
                item._tdTrack = setTimeout(function () { card.classList.add('td-tracking'); }, 600);
            }
        } else {
            resetTilt(card);
            var anim = floating.matches ? flip(item, false) : null;
            if (anim) anim.onfinish = function () { item.classList.remove('is-open'); syncSection(); };
            else item.classList.remove('is-open');
        }
        item.setAttribute('aria-expanded', open ? 'true' : 'false');
        syncSection();
    }
    function syncSection() {
        if (section) section.classList.toggle('has-open-detail', !!section.querySelector('.trainer-item.is-open'));
    }
    function closeAll(except) {
        items.forEach(function (it) { if (it !== except) setOpen(it, false); });
    }

    items.forEach(function (item) {
        var card = item.querySelector('.trainer-detail');

        // Desktop hover: short intent delay so sweeping across the grid
        // doesn't fire every card.
        item.addEventListener('mouseenter', function () {
            if (floating.matches) return;
            clearTimeout(item._tdHover);
            item._tdHover = setTimeout(function () { closeAll(item); setOpen(item, true); }, 90);
        });
        item.addEventListener('mouseleave', function () {
            if (floating.matches) return;
            clearTimeout(item._tdHover);
            setOpen(item, false);
        });

        // Tilt + drift toward the pointer while open (desktop only).
        item.addEventListener('mousemove', function (e) {
            if (floating.matches || reduced.matches || !item.classList.contains('is-open')) return;
            var r = card.getBoundingClientRect();
            var dx = Math.max(-1, Math.min(1, (e.clientX - (r.left + r.width / 2)) / (r.width / 2)));
            var dy = Math.max(-1, Math.min(1, (e.clientY - (r.top + r.height / 2)) / (r.height / 2)));
            card.style.setProperty('--td-ry', (dx * 5).toFixed(2) + 'deg');
            card.style.setProperty('--td-rx', (-dy * 5).toFixed(2) + 'deg');
            card.style.setProperty('--td-mx', (dx * 6).toFixed(1) + 'px');
            card.style.setProperty('--td-my', (dy * 6).toFixed(1) + 'px');
        });

        item.addEventListener('focus', function () {
            if (!floating.matches) { closeAll(item); setOpen(item, true); }
        });
        item.addEventListener('blur', function (e) {
            if (!floating.matches && !item.contains(e.relatedTarget)) setOpen(item, false);
        });

        // Tap / click (touch, or a desktop click on a closed tile).
        item.addEventListener('click', function (e) {
            e.stopPropagation();
            if (e.target.closest('.td-close')) { setOpen(item, false); return; }
            var inCard = !!e.target.closest('.trainer-detail');
            if (item.classList.contains('is-open')) {
                // Tapping the dimmed backdrop (the item's ::after) closes it;
                // taps inside the card (scroll, select) keep it open.
                if (floating.matches && !inCard) setOpen(item, false);
                return;
            }
            closeAll(item);
            setOpen(item, true);
        });
        item.addEventListener('keydown', function (e) {
            if (e.key === 'Escape') { setOpen(item, false); item.blur(); }
            else if ((e.key === 'Enter' || e.key === ' ' || e.key === 'Spacebar') && e.target === item) {
                e.preventDefault();
                setOpen(item, !item.classList.contains('is-open'));
            }
        });
    });
    document.addEventListener('click', function () { closeAll(null); });
    document.addEventListener('keydown', function (e) { if (e.key === 'Escape') closeAll(null); });
    window.addEventListener('resize', function () { closeAll(null); }, { passive: true });
});

/* ── Mensalidades: pre-select the clicked card in the sign-up modal ───────── */
document.addEventListener('DOMContentLoaded', function () {
    var select = document.querySelector('#joinModal select[name="membership_id"]');
    if (!select) return;
    document.querySelectorAll('[data-target="#joinModal"][data-membership]').forEach(function (btn) {
        btn.addEventListener('click', function () { select.value = btn.getAttribute('data-membership'); });
    });
});