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(function () { |
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'use strict'; |
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|
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function isSafeRedirectUrl(url) { |
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if (!url) return false; |
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var u = String(url).trim(); |
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if (!u) return false; |
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if (/^\s*(javascript|data|vbscript):/i.test(u)) return false; |
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// allow absolute http(s) or relative URLs/fragments |
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return /^(https?:\/\/|\/|\.|\?|#)/i.test(u); |
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} |
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|
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function clearEl(el) { |
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while (el && el.firstChild) { |
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el.removeChild(el.firstChild); |
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} |
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} |
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|
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function pad(num) { |
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return num < 10 ? '0' + num : String(num); |
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} |
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|
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function getTimeRemaining(targetDate) { |
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var now = new Date(); |
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var target = new Date(targetDate); |
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var total = target - now; |
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|
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if (total <= 0) { |
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return { days: 0, hours: 0, minutes: 0, seconds: 0, total: 0, expired: true }; |
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} |
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|
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return { |
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days: Math.floor(total / (1000 * 60 * 60 * 24)), |
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hours: Math.floor((total / (1000 * 60 * 60)) % 24), |
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minutes: Math.floor((total / (1000 * 60)) % 60), |
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seconds: Math.floor((total / 1000) % 60), |
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total: total, |
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expired: false |
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}; |
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} |
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|
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// Get evergreen target date from localStorage or create new one |
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function getEvergreenTarget(wrap, duration) { |
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var storageKey = 'bkbg_cd_evergreen_' + (wrap.id || wrap.getAttribute('data-evergreen-id') || 'default'); |
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var stored = localStorage.getItem(storageKey); |
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|
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if (stored) { |
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var storedDate = new Date(stored); |
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// If stored date is still in future, use it |
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if (storedDate > new Date()) { |
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return stored; |
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} |
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} |
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|
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// Create new target date based on duration |
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var now = new Date(); |
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var target = new Date(now.getTime() + duration); |
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var isoString = target.toISOString(); |
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localStorage.setItem(storageKey, isoString); |
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return isoString; |
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} |
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|
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function initCountdown(wrap) { |
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var target = wrap.getAttribute('data-target'); |
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var unitsConfig = wrap.getAttribute('data-units') || ''; |
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var showLabels = wrap.getAttribute('data-show-labels') === '1'; |
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var showSeparators = wrap.getAttribute('data-show-separators') === '1'; |
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var expiredAction = wrap.getAttribute('data-expired-action') || 'message'; |
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var expiredMessage = wrap.getAttribute('data-expired-message') || "Time's up!"; |
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var expiredRedirect = wrap.getAttribute('data-expired-redirect') || ''; |
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// Evergreen mode |
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var evergreenMode = wrap.getAttribute('data-evergreen') === '1'; |
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var evergreenDuration = parseInt(wrap.getAttribute('data-evergreen-duration') || '86400000', 10); // default 24h in ms |
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|
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if (evergreenMode) { |
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target = getEvergreenTarget(wrap, evergreenDuration); |
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} |
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|
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if (!target) return; |
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|
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// Parse units config |
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var units = []; |
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unitsConfig.split('|').forEach(function (item) { |
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if (!item) return; |
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var parts = item.split(':'); |
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if (parts.length >= 2) { |
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units.push({ key: parts[0], label: parts.slice(1).join(':') }); |
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} |
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}); |
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|
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var countdownEl = wrap.querySelector('.bkbg-cd-countdown'); |
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if (!countdownEl) return; |
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|
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var hasExpired = false; |
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|
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function render() { |
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var time = getTimeRemaining(target); |
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|
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if (time.expired && !hasExpired) { |
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hasExpired = true; |
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|
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// For evergreen mode, restart the countdown |
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if (evergreenMode) { |
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var storageKey = 'bkbg_cd_evergreen_' + (wrap.id || wrap.getAttribute('data-evergreen-id') || 'default'); |
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localStorage.removeItem(storageKey); |
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target = getEvergreenTarget(wrap, evergreenDuration); |
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hasExpired = false; |
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render(); |
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return; |
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} |
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|
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handleExpiration(); |
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return; |
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} |
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|
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if (hasExpired) return; |
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|
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// Build DOM safely (avoid innerHTML) |
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clearEl(countdownEl); |
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units.forEach(function (unit, index) { |
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var value = time[unit.key] !== undefined ? time[unit.key] : 0; |
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var isLast = index === units.length - 1; |
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var valueStr = pad(value); |
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|
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var unitEl = document.createElement('div'); |
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unitEl.className = 'bkbg-cd-unit'; |
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|
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var digitEl = document.createElement('div'); |
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digitEl.className = 'bkbg-cd-digit'; |
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|
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var numberEl = document.createElement('span'); |
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numberEl.className = 'bkbg-cd-number'; |
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numberEl.textContent = valueStr; |
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digitEl.appendChild(numberEl); |
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unitEl.appendChild(digitEl); |
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|
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if (showLabels) { |
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var labelEl = document.createElement('span'); |
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labelEl.className = 'bkbg-cd-label'; |
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labelEl.textContent = unit.label || ''; |
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unitEl.appendChild(labelEl); |
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} |
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|
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countdownEl.appendChild(unitEl); |
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|
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if (showSeparators && !isLast) { |
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var sep = document.createElement('span'); |
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sep.className = 'bkbg-cd-separator'; |
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sep.textContent = ':'; |
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countdownEl.appendChild(sep); |
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} |
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}); |
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} |
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|
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function handleExpiration() { |
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switch (expiredAction) { |
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case 'message': |
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clearEl(wrap); |
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var msg = document.createElement('div'); |
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msg.className = 'bkbg-cd-expired'; |
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msg.textContent = expiredMessage || "Time's up!"; |
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wrap.appendChild(msg); |
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break; |
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case 'hide': |
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wrap.style.display = 'none'; |
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break; |
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case 'redirect': |
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if (isSafeRedirectUrl(expiredRedirect)) { |
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window.location.href = expiredRedirect; |
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} |
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break; |
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case 'keep': |
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// Do nothing, keep showing 00:00:00 |
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break; |
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} |
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} |
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|
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// Initial render |
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render(); |
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|
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// Update every second |
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var interval = setInterval(function () { |
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if (hasExpired && expiredAction !== 'keep') { |
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clearInterval(interval); |
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return; |
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} |
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render(); |
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}, 1000); |
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} |
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|
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function init() { |
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var countdowns = document.querySelectorAll('.bkbg-cd-wrap[data-target], .bkbg-cd-wrap[data-evergreen="1"]'); |
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countdowns.forEach(initCountdown); |
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} |
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|
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// Initialize |
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if (document.readyState === 'loading') { |
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document.addEventListener('DOMContentLoaded', init); |
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} else { |
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init(); |
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} |
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})(); |
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