pguzman
663fde3909
Full source for loveandrosary.com: slide-based Rosary/novena/Divine Mercy Chaplet presentation tool with multi-user roles, SVG bead ring, audio uploads, donate strip, and public session profiles. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
669 lines
24 KiB
JavaScript
669 lines
24 KiB
JavaScript
/**
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* assets/js/presenter.js (v11)
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*
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* Controls slide navigation and DOM updates for the presentation view.
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* Depends on:
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* - SLIDES (global, JSON array from PHP)
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* - SESSION_ID (global, integer session ID)
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* - BACK_URL (global, URL to return to on exit)
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* - RosaryRing (global, from rosary.js)
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*/
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(function () {
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'use strict';
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if (!window.SLIDES || !SLIDES.length) {
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console.error('No slides data found.');
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return;
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}
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var currentIndex = 0;
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// -----------------------------------------------------------------------
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// Slide expansion — pre-split long prayers into "Part 1 / 2" / "Part 2 / 2"
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// so text stays large and readable on Zoom / projector rather than shrinking
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// to illegibility. Prayers with more than SPLIT_THRESHOLD combined lines are
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// automatically split at the nearest paragraph break.
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// -----------------------------------------------------------------------
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var SPLIT_THRESHOLD = 10;
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function countLines(text) {
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if (!text || !text.trim()) return 0;
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return text.split('\n').length;
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}
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function splitText(text) {
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// Prefer splitting at paragraph breaks (\n\n)
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var paras = text.split('\n\n');
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if (paras.length >= 2) {
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var mid = Math.ceil(paras.length / 2);
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var p1 = paras.slice(0, mid).join('\n\n').trim();
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var p2 = paras.slice(mid).join('\n\n').trim();
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if (p1 && p2) return [p1, p2];
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}
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// Fall back: split at line midpoint
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var lines = text.split('\n');
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var mid = Math.ceil(lines.length / 2);
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return [lines.slice(0, mid).join('\n').trim(), lines.slice(mid).join('\n').trim()];
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}
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function expandSlides(rawSlides) {
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var result = [];
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for (var i = 0; i < rawSlides.length; i++) {
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var s = rawSlides[i];
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var leaderLines = countLines(s.leader);
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var allLines = countLines(s.all);
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if (leaderLines + allLines <= SPLIT_THRESHOLD) {
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result.push(s);
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continue;
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}
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// Decide which field to split (the longer one)
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var field = (allLines >= leaderLines) ? 'all' : 'leader';
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var halves = splitText(s[field]);
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if (!halves[0] || !halves[1]) { result.push(s); continue; } // safety
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var p1 = Object.assign({}, s);
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var p2 = Object.assign({}, s);
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p1._partNum = 1; p1._partTotal = 2;
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p2._partNum = 2; p2._partTotal = 2;
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p2.bead_index = null; // bead was "prayed" in part 1
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if (field === 'all') {
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p1.all = halves[0];
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p2.leader = '';
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p2.all = halves[1];
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} else {
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p1.leader = halves[0];
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p1.all = '';
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p2.leader = halves[1];
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}
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result.push(p1, p2);
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}
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return result;
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}
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var slides = expandSlides(SLIDES);
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var total = slides.length;
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// localStorage key for resume position
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var RESUME_KEY = 'rosary_pos_' + (window.SESSION_ID || '0');
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// Pre-compute repeat-run info for every (possibly expanded) slide.
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// Group consecutive slides by prayer content (leader + all text), not title —
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// so opening Hail Marys "in Faith / Hope / Charity" and decade Hail Marys all
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// detect as runs even though their titles differ.
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var slideRunInfo = (function () {
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var info = new Array(total).fill(null);
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var i = 0;
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while (i < total) {
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var s = slides[i];
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var key = s.type + '||' + (s.leader || '') + '||' + (s.all || '');
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var start = i;
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while (i < total) {
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var si = slides[i];
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var ki = si.type + '||' + (si.leader || '') + '||' + (si.all || '');
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if (ki !== key) break;
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i++;
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}
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var len = i - start;
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if (len > 1) {
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for (var j = start; j < i; j++) {
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info[j] = { pos: j - start + 1, total: len };
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}
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}
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}
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return info;
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})();
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// Map bead index → first slide index that uses that bead.
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// Used by bead click navigation so clicking a bead jumps to the right slide.
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var beadToSlide = {};
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(function () {
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for (var i = 0; i < total; i++) {
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var bi = slides[i].bead_index;
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if (bi !== null && bi !== undefined && !(bi in beadToSlide)) {
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beadToSlide[bi] = i;
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}
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}
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})();
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// Scan slides 0..upToIndex and return the highest non-null bead_index seen.
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// Used so "between-bead" slides (Glory Be, Fatima, litanies) keep prayed
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// beads red instead of resetting everything to gray.
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function getLastPrayedBead(upToIndex) {
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var last = null;
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for (var i = 0; i <= upToIndex; i++) {
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var bi = slides[i] ? slides[i].bead_index : null;
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if (bi !== null && bi !== undefined) {
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last = bi;
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}
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}
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return last;
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}
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// DOM refs
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var coverSlide = document.getElementById('cover-slide');
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var prayerSlide = document.getElementById('prayer-slide');
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var mysterySlide = document.getElementById('mystery-slide');
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var litanySlide = document.getElementById('litany-slide');
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var closingSlide = document.getElementById('closing-slide');
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var btnPrev = document.getElementById('btn-prev');
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var btnNext = document.getElementById('btn-next');
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var btnExit = document.getElementById('btn-exit');
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var btnAudio = document.getElementById('btn-audio');
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var slideCounter = document.getElementById('slide-counter');
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var resumeToast = document.getElementById('resume-toast');
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// --------------------------------------------------------------------------
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// Audio
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// AUDIO_MANIFEST: {key: ext, ...} — provided by present.php
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// AUDIO_BASE_URL: '/uploads/audio/'
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// --------------------------------------------------------------------------
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var AUDIO_PREF_KEY = 'rosary_audio'; // localStorage — global pref, not per-session
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var audioEnabled = false;
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var currentAudio = null;
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var hasAudioFiles = window.AUDIO_MANIFEST && Object.keys(AUDIO_MANIFEST).length > 0;
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if (hasAudioFiles) {
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var stored = localStorage.getItem(AUDIO_PREF_KEY);
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// Default ON when audio is available; user can mute
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audioEnabled = (stored === null) ? true : (stored === 'on');
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}
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function updateAudioBtn() {
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if (!btnAudio) return;
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if (audioEnabled) {
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btnAudio.innerHTML = '🔈'; // 🔊
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btnAudio.title = 'Audio on — click to mute';
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} else {
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btnAudio.innerHTML = '🔇'; // 🔇
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btnAudio.title = 'Audio off — click to enable';
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}
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}
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function stopAudio() {
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if (currentAudio) {
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currentAudio.pause();
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currentAudio.currentTime = 0;
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currentAudio = null;
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}
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}
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// Map a slide's id to a canonical audio key.
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// Many slides share one recording (e.g. all 55 Hail Marys → 'hail_mary').
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function getAudioKey(slide) {
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if (!slide) return null;
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var id = slide.id || '';
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if (!id || id === 'cover') return null;
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// Common prayers — many slides → one key
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if (id === 'sign_of_cross' || id === 'dm_sign_of_cross') return 'sign_of_cross';
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if (id === 'apostles_creed' || id === 'dm_apostles_creed') return 'apostles_creed';
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if (id.indexOf('our_father') === 0 || id === 'dm_our_father_opening') return 'our_father';
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if (id.indexOf('hail_mary') === 0 || id === 'dm_hail_mary_opening') return 'hail_mary';
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if (id.indexOf('glory_be') === 0) return 'glory_be';
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if (id.indexOf('fatima_') === 0) return 'fatima_prayer';
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// Mysteries — unique per mystery
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if (id.indexOf('mystery_') === 0) return id;
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// Hail Holy Queen — both slides share one audio
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if (id.indexOf('hail_holy_queen') === 0) return 'hail_holy_queen';
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// Rosary closing prayer + generic closing
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if (id === 'rosary_closing_prayer') return 'rosary_closing_prayer';
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if (id === 'closing') return 'closing';
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// Litany of Passion — unique per entry
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if (id.indexOf('litany_passion_') === 0) return id;
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// Novena deceased day prayers — unique per day
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if (id.indexOf('novena_day_') === 0) return id;
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// Litany for Departed — unique per entry
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if (id.indexOf('litany_departed_') === 0) return id;
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// Divine Mercy
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if (id === 'dm_opening') return 'dm_opening';
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if (id.indexOf('dm_blood_water') === 0) return 'dm_blood_water';
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if (id.indexOf('dm_intention_day_') === 0) return id;
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if (id.indexOf('dm_prayer_day_') === 0) return id;
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if (id.indexOf('dm_eternal_father') === 0) return 'dm_eternal_father';
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if (id.indexOf('dm_for_sake') === 0) return 'dm_for_sake';
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if (id.indexOf('dm_holy_god') === 0) return 'dm_holy_god';
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return id; // fallback: use slide ID directly
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}
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function playSlideAudio(slide) {
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stopAudio();
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if (!audioEnabled || !hasAudioFiles) return;
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var key = getAudioKey(slide);
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if (!key || !AUDIO_MANIFEST[key]) return;
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var audio = new Audio(window.AUDIO_BASE_URL + key + '.' + AUDIO_MANIFEST[key]);
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audio.play().catch(function () { /* silently skip — file may be absent */ });
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currentAudio = audio;
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}
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if (btnAudio) {
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btnAudio.addEventListener('click', function () {
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audioEnabled = !audioEnabled;
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try { localStorage.setItem(AUDIO_PREF_KEY, audioEnabled ? 'on' : 'off'); } catch (e) {}
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updateAudioBtn();
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if (!audioEnabled) stopAudio();
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});
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}
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updateAudioBtn();
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// Hide all slide panels
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function hideAll() {
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coverSlide.style.display = 'none';
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prayerSlide.style.display = 'none';
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mysterySlide.style.display = 'none';
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litanySlide.style.display = 'none';
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closingSlide.style.display = 'none';
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}
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// Helpers
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function setText(id, value) {
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var el = document.getElementById(id);
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if (el) el.textContent = value || '';
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}
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function setHTML(id, value) {
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var el = document.getElementById(id);
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if (el) el.innerHTML = value || '';
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}
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function showEl(id) {
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var el = document.getElementById(id);
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if (el) el.style.display = '';
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}
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function hideEl(id) {
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var el = document.getElementById(id);
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if (el) el.style.display = 'none';
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}
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// Convert newlines to <br> for display, keeping pre-line behavior
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function nl(text) {
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if (!text) return '';
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return text.replace(/\n/g, '\n'); // already handled by white-space: pre-line
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}
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// --------------------------------------------------------------------------
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// Render a slide
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// --------------------------------------------------------------------------
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function render(index) {
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hideAll();
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var slide = slides[index];
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if (!slide) return;
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// Trigger CSS fade-in by re-inserting / touching the element
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switch (slide.type) {
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case 'cover':
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renderCover(slide);
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coverSlide.style.display = '';
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break;
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case 'mystery':
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renderMystery(slide);
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mysterySlide.style.display = '';
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break;
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case 'litany':
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renderLitany(slide);
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litanySlide.style.display = '';
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break;
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case 'closing':
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renderClosing(slide);
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closingSlide.style.display = '';
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break;
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default: // 'prayer'
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renderPrayer(slide);
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prayerSlide.style.display = '';
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break;
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}
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// Update counter (cover is slide 0, not counted in "Prayer X of Y")
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updateCounter(index);
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// Show repeat badge when the same content repeats (e.g. Agnus Dei × 3)
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updateRepeatBadge(index);
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// Shrink text so the slide fits on screen without scrolling
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fitTextToScreen();
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// Update rosary bead ring — pass both the current bead and the last prayed bead
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// so "between-bead" slides (Glory Be, Fatima, litanies) keep the ring colored.
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if (typeof RosaryRing !== 'undefined') {
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var currentBead = (slide.bead_index !== undefined) ? slide.bead_index : null;
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var lastBead = getLastPrayedBead(index);
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RosaryRing.update(currentBead, lastBead);
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}
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// Scroll slide content back to top on each navigation
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var content = document.getElementById('slide-content');
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if (content) content.scrollTop = 0;
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// Update nav buttons
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btnPrev.disabled = (index === 0);
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btnNext.disabled = (index === total - 1);
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}
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function renderCover(slide) {
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setText('cover-title', slide.title);
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setText('cover-body', slide.all);
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var photoWrap = document.getElementById('cover-photo-wrap');
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var photoImg = document.getElementById('cover-photo');
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if (slide.photo_path && photoImg) {
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photoImg.src = slide.photo_path;
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photoImg.style.display = '';
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photoWrap.classList.remove('no-photo');
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} else {
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photoWrap.classList.add('no-photo');
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}
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}
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function renderPrayer(slide) {
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setText('slide-title', slide.title);
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var hasLeader = !!(slide.leader && slide.leader.trim());
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var hasAll = !!(slide.all && slide.all.trim());
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if (hasLeader) {
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showEl('leader-wrap');
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setText('leader-text', slide.leader);
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} else {
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hideEl('leader-wrap');
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}
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if (hasAll) {
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showEl('all-wrap');
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setText('all-text', slide.all);
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} else {
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hideEl('all-wrap');
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}
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// Bump font size when only one section is present
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var slideText = document.getElementById('slide-text');
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if (slideText) {
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if (hasLeader !== hasAll) {
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slideText.classList.add('single-section');
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} else {
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slideText.classList.remove('single-section');
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}
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}
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}
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function renderMystery(slide) {
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// title is like "The Third Sorrowful Mystery"
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// leader is the name of the mystery
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// all is the fruit/intention
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setText('mystery-number', slide.title);
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setText('mystery-title', slide.leader);
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setText('mystery-fruit', slide.all);
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}
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function renderLitany(slide) {
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setText('litany-title', slide.title);
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var hasLeader = !!(slide.leader && slide.leader.trim());
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var hasAll = !!(slide.all && slide.all.trim());
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if (hasLeader) {
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showEl('litany-leader-wrap');
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setText('litany-leader', slide.leader);
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} else {
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hideEl('litany-leader-wrap');
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}
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if (hasAll) {
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showEl('litany-all-wrap');
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setText('litany-all', slide.all);
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} else {
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hideEl('litany-all-wrap');
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}
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}
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function renderClosing(slide) {
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setText('closing-title', slide.title);
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setText('closing-subtitle', slide.subtitle || '');
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setText('closing-body', slide.all);
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var photoWrap = document.getElementById('closing-photo-wrap');
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var photoImg = document.getElementById('closing-photo');
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if (slide.photo_path && photoImg) {
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photoImg.src = slide.photo_path;
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photoWrap.style.display = '';
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} else if (photoWrap) {
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photoWrap.style.display = 'none';
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}
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}
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// --------------------------------------------------------------------------
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// fitTextToScreen — shrink prayer/litany text until the slide fits on screen
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// without a scrollbar. Uses binary search over pixel font-size.
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// Called after every render so long prayers (e.g. Day 5 novena, Concluding
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// Prayer) automatically scale down rather than requiring a scroll.
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// --------------------------------------------------------------------------
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var FIT_TEXT_ELS = '#leader-text, #all-text, #litany-leader, #litany-all, #closing-body';
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var FIT_MIN_PX = 22; // floor — stay readable for Zoom / projector audiences
|
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function fitTextToScreen() {
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var container = document.getElementById('slide-content');
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||
if (!container) return;
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var textEls = container.querySelectorAll(FIT_TEXT_ELS);
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||
|
||
// Reset any previous override so we measure the natural (CSS) size
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||
for (var k = 0; k < textEls.length; k++) {
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textEls[k].style.fontSize = '';
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}
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|
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// Already fits — nothing to do
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if (container.scrollHeight <= container.clientHeight + 2) return;
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if (!textEls.length) return; // no adjustable text (cover, mystery, etc.)
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// Upper bound = current computed size; lower bound = readable minimum
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var naturalPx = parseFloat(window.getComputedStyle(textEls[0]).fontSize);
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var lo = FIT_MIN_PX;
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var hi = naturalPx;
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// Binary search: 20 iterations converges to < 0.1 px accuracy
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for (var iter = 0; iter < 20; iter++) {
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var mid = (lo + hi) / 2;
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||
for (var k = 0; k < textEls.length; k++) {
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||
textEls[k].style.fontSize = mid + 'px';
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||
}
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||
if (container.scrollHeight <= container.clientHeight + 2) {
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lo = mid; // fits — try a touch larger
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||
} else {
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hi = mid; // overflows — try smaller
|
||
}
|
||
}
|
||
|
||
// Lock in the converged size
|
||
for (var k = 0; k < textEls.length; k++) {
|
||
textEls[k].style.fontSize = lo + 'px';
|
||
}
|
||
}
|
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|
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function updateCounter(index) {
|
||
var prayerTotal = total - 1; // exclude cover
|
||
if (index === 0) {
|
||
slideCounter.textContent = '';
|
||
} else {
|
||
slideCounter.textContent = 'Prayer ' + index + ' of ' + prayerTotal;
|
||
}
|
||
}
|
||
|
||
function updateRepeatBadge(index) {
|
||
// Hide every badge first (avoid NodeList.forEach for compatibility)
|
||
var allBadges = document.querySelectorAll('.repeat-badge');
|
||
for (var k = 0; k < allBadges.length; k++) {
|
||
allBadges[k].style.display = 'none';
|
||
allBadges[k].textContent = '';
|
||
}
|
||
|
||
var slide = slides[index];
|
||
|
||
// Part badge takes priority (long prayer split across slides)
|
||
var badgeText = '';
|
||
if (slide._partNum) {
|
||
badgeText = 'Part ' + slide._partNum + ' / ' + slide._partTotal;
|
||
} else {
|
||
var run = slideRunInfo[index];
|
||
if (run) badgeText = run.pos + ' of ' + run.total;
|
||
}
|
||
if (!badgeText) return;
|
||
|
||
// Show the badge inside the currently-visible slide panel
|
||
var panelId = (slide.type === 'litany') ? 'litany-slide' : 'prayer-slide';
|
||
var panel = document.getElementById(panelId);
|
||
var badge = panel ? panel.querySelector('.repeat-badge') : null;
|
||
if (badge) {
|
||
badge.textContent = badgeText;
|
||
badge.style.display = '';
|
||
}
|
||
}
|
||
|
||
// --------------------------------------------------------------------------
|
||
// Navigation
|
||
// --------------------------------------------------------------------------
|
||
function goTo(index) {
|
||
if (index < 0 || index >= total) return;
|
||
currentIndex = index;
|
||
render(currentIndex);
|
||
// Play audio for this slide (stops previous audio automatically)
|
||
playSlideAudio(slides[index]);
|
||
// Persist position so the user can resume after exiting.
|
||
// Clear it when they reach the closing slide (rosary complete).
|
||
try {
|
||
if (index > 0 && index < total - 1) {
|
||
localStorage.setItem(RESUME_KEY, index);
|
||
} else {
|
||
localStorage.removeItem(RESUME_KEY);
|
||
}
|
||
} catch (e) { /* storage unavailable */ }
|
||
}
|
||
|
||
function prev() { goTo(currentIndex - 1); }
|
||
function next() { goTo(currentIndex + 1); }
|
||
|
||
btnPrev.addEventListener('click', prev);
|
||
btnNext.addEventListener('click', next);
|
||
|
||
if (btnExit) {
|
||
btnExit.addEventListener('click', function () {
|
||
// Position already saved by goTo; navigate back
|
||
window.location.href = window.BACK_URL || '/';
|
||
});
|
||
}
|
||
|
||
// Keyboard
|
||
document.addEventListener('keydown', function (e) {
|
||
switch (e.key) {
|
||
case 'ArrowRight':
|
||
case 'ArrowDown':
|
||
case ' ':
|
||
e.preventDefault();
|
||
next();
|
||
break;
|
||
case 'ArrowLeft':
|
||
case 'ArrowUp':
|
||
e.preventDefault();
|
||
prev();
|
||
break;
|
||
case 'f':
|
||
case 'F':
|
||
toggleFullscreen();
|
||
break;
|
||
}
|
||
});
|
||
|
||
// Touch swipe
|
||
var touchStartX = null;
|
||
var touchStartY = null;
|
||
|
||
document.addEventListener('touchstart', function (e) {
|
||
touchStartX = e.touches[0].clientX;
|
||
touchStartY = e.touches[0].clientY;
|
||
}, { passive: true });
|
||
|
||
document.addEventListener('touchend', function (e) {
|
||
if (touchStartX === null) return;
|
||
var dx = e.changedTouches[0].clientX - touchStartX;
|
||
var dy = e.changedTouches[0].clientY - touchStartY;
|
||
|
||
// Only respond to mostly-horizontal swipes
|
||
if (Math.abs(dx) > Math.abs(dy) && Math.abs(dx) > 40) {
|
||
if (dx < 0) next();
|
||
else prev();
|
||
}
|
||
touchStartX = null;
|
||
touchStartY = null;
|
||
}, { passive: true });
|
||
|
||
// Fullscreen
|
||
function toggleFullscreen() {
|
||
if (!document.fullscreenElement) {
|
||
document.documentElement.requestFullscreen().catch(function () {});
|
||
} else {
|
||
document.exitFullscreen().catch(function () {});
|
||
}
|
||
}
|
||
|
||
// Re-fit text when the window is resized (e.g. projector moved to a
|
||
// different monitor, fullscreen toggled, or phone rotated).
|
||
var resizeTimer = null;
|
||
window.addEventListener('resize', function () {
|
||
clearTimeout(resizeTimer);
|
||
resizeTimer = setTimeout(function () { render(currentIndex); }, 150);
|
||
});
|
||
|
||
// --------------------------------------------------------------------------
|
||
// Initialize
|
||
// --------------------------------------------------------------------------
|
||
|
||
// Check for a saved resume position
|
||
var resumeIndex = 0;
|
||
try {
|
||
var saved = localStorage.getItem(RESUME_KEY);
|
||
if (saved !== null) {
|
||
var parsed = parseInt(saved, 10);
|
||
if (!isNaN(parsed) && parsed > 0 && parsed < total - 1) {
|
||
resumeIndex = parsed;
|
||
}
|
||
}
|
||
} catch (e) { /* storage unavailable */ }
|
||
|
||
render(resumeIndex);
|
||
currentIndex = resumeIndex;
|
||
|
||
// Show fade-out toast if resuming mid-prayer
|
||
if (resumeIndex > 0 && resumeToast) {
|
||
resumeToast.textContent = 'Resumed at prayer ' + resumeIndex + ' of ' + (total - 1);
|
||
resumeToast.classList.add('visible');
|
||
setTimeout(function () {
|
||
resumeToast.classList.remove('visible');
|
||
}, 2800);
|
||
}
|
||
|
||
// Wire bead clicks: jump to the first slide that uses that bead
|
||
if (typeof RosaryRing !== 'undefined' && RosaryRing.onBeadClick) {
|
||
RosaryRing.onBeadClick(function (beadIndex) {
|
||
if (beadIndex in beadToSlide) {
|
||
goTo(beadToSlide[beadIndex]);
|
||
}
|
||
});
|
||
}
|
||
|
||
})();
|