`); printWindow.document.close(); }// Helper: generate IDs easily function wpCertGenerateRandomId() { const randomNum = Math.floor(1000 + Math.random() * 9000); const year = new Date().getFullYear(); document.getElementById('wp-cert-field-id').value = `CERT-${year}-${randomNum}`; wpCertSyncInputToCanvas(); wpCertCaptureHistory(); }// Undo / Redo engine tracking snapshot function wpCertCaptureHistory() { const currentData = { title: document.querySelector('[data-field="title"]').value, subtitle: document.querySelector('[data-field="subtitle"]').value, recipient: document.querySelector('[data-field="recipient"]').value, desc: document.querySelector('[data-field="description"]').value, course: document.querySelector('[data-field="course"]').value, certId: document.querySelector('[data-field="cert-id"]').value, date: document.querySelector('[data-field="issue-date"]').value, themeColor: wpCertState.themeColor, accentColor: wpCertState.accentColor, fontFamily: wpCertState.fontFamily, orientation: wpCertState.orientation, cornerStyle: wpCertState.cornerStyle, qrUrl: wpCertState.qrUrl };// Overwrite standard forward line if user edited in between if (wpCertState.historyIndex < wpCertState.history.length - 1) { wpCertState.history = wpCertState.history.slice(0, wpCertState.historyIndex + 1); }wpCertState.history.push(currentData); wpCertState.historyIndex++; }function wpCertUndoAction() { if (wpCertState.historyIndex > 0) { wpCertState.historyIndex--; wpCertRestoreFromHistory(wpCertState.history[wpCertState.historyIndex]); } }function wpCertRedoAction() { if (wpCertState.historyIndex < wpCertState.history.length - 1) { wpCertState.historyIndex++; wpCertRestoreFromHistory(wpCertState.history[wpCertState.historyIndex]); } }function wpCertRestoreFromHistory(stateObj) { if (!stateObj) return;document.querySelector('[data-field="title"]').value = stateObj.title; document.querySelector('[data-field="subtitle"]').value = stateObj.subtitle; document.querySelector('[data-field="recipient"]').value = stateObj.recipient; document.querySelector('[data-field="description"]').value = stateObj.desc; document.querySelector('[data-field="course"]').value = stateObj.course; document.querySelector('[data-field="cert-id"]').value = stateObj.certId; document.querySelector('[data-field="issue-date"]').value = stateObj.date;wpCertState.themeColor = stateObj.themeColor; wpCertState.accentColor = stateObj.accentColor; wpCertState.fontFamily = stateObj.fontFamily; wpCertState.orientation = stateObj.orientation; wpCertState.cornerStyle = stateObj.cornerStyle; wpCertState.qrUrl = stateObj.qrUrl;wpCertNodes.themeColorInput.value = stateObj.themeColor; wpCertNodes.accentColorInput.value = stateObj.accentColor; wpCertNodes.fontFamilySelect.value = stateObj.fontFamily; wpCertNodes.cornerStyleSelect.value = stateObj.cornerStyle; wpCertNodes.qrFieldInput.value = stateObj.qrUrl;if (wpCertState.orientation === 'portrait') { wpCertNodes.canvas.classList.add('portrait'); } else { wpCertNodes.canvas.classList.remove('portrait'); }wpCertSyncInputToCanvas(); wpCertApplyColorsAndStyles(); wpCertUpdateQR(); }function wpCertResetWorkspace() { if (confirm('Are you sure you want to reset all modifications?')) { document.querySelector('[data-field="title"]').value = 'CERTIFICATE OF APPRECIATION'; document.querySelector('[data-field="subtitle"]').value = 'This is proudly presented to'; document.querySelector('[data-field="recipient"]').value = 'Jane Doe'; document.querySelector('[data-field="description"]').value = 'for successfully completing all requirements of the professional program'; document.querySelector('[data-field="course"]').value = 'Advanced Full-Stack Engineering 2026'; wpCertState.themeColor = '#1e293b'; wpCertState.accentColor = '#c5a880'; wpCertState.fontFamily = "'Georgia', serif"; wpCertState.cornerStyle = 'classic'; wpCertState.orientation = 'landscape'; wpCertNodes.canvas.classList.remove('portrait');wpCertSyncInputToCanvas(); wpCertApplyColorsAndStyles(); wpCertCaptureHistory(); } }// Launch Application inside scope safely wpCertInit();})();