${SETTINGS.overlayText}

Iniciando…

${SETTINGS.overlaySubtext}

`; document.body.appendChild(overlay); function showOverlay() { overlay.style.display = "flex"; } function hideOverlay() { overlay.style.display = "none"; } const statusLineEl = overlay.querySelector("#pdfStatusLine"); const statusDetailEl = overlay.querySelector("#pdfStatusDetail"); const attemptEl = overlay.querySelector("#pdfAttempt"); setStatus = (txt) => { if (statusLineEl) statusLineEl.textContent = txt; }; setDetail = (txt) => { if (statusDetailEl) statusDetailEl.textContent = txt; }; setAttempt = (n, total) => { if (!attemptEl) return; attemptEl.textContent = total > 1 ? `Conexión: intentando opción ${n}/${total}` : ""; }; // --- resolve name + replacement URL const pageQ = trimStr(getNameParam()); const isValid = pageQ && (pageQ in SETTINGS.replacements); const replacementUrl = isValid ? trimStr(SETTINGS.replacements[pageQ]) : SETTINGS.blankImage; console.log("[flipbook] Script Injected ✅", { pageQ, isValid }); // --- image replacement in viewer function replaceImages(root = document) { const imgs = root.querySelectorAll("div.book-pageelement--interactive img.pagelink-content__image"); const replValues = Object.values(SETTINGS.replacements); imgs.forEach((img) => { if (img.classList.contains("anti-flash-cover-image")) return; if (img.src === SETTINGS.blankImage) return; if (replValues.includes(img.src)) return; if (replacementUrl) img.src = replacementUrl; }); } replaceImages(); setTimeout(replaceImages, 500); new MutationObserver(() => replaceImages()).observe(document.body, { childList: true, subtree: true }); // --- button const btn = document.createElement("button"); btn.textContent = SETTINGS.buttonText; Object.assign(btn.style, { position: "fixed", bottom: "20px", right: "20px", padding: "10px 15px", backgroundColor: SETTINGS.buttonBg, color: SETTINGS.buttonColor, border: "none", borderRadius: "4px", cursor: "pointer", zIndex: 9999 }); document.body.appendChild(btn); const origPdfBtn = document.getElementById("modDownloadPdfBtn"); if (!isValid) { btn.style.display = "none"; if (origPdfBtn) origPdfBtn.style.display = ""; } else { btn.style.display = ""; if (origPdfBtn) origPdfBtn.style.display = "none"; } function getPDFUrlWithParams() { const url = new URL(window.location.href); const pdfBase = url.origin + url.pathname.replace(/\/?$/, "/") + "GetPDF.ashx"; const params = new URLSearchParams(); if (url.searchParams.has("name")) params.set("name", url.searchParams.get("name")); return params.toString() ? `${pdfBase}?${params}` : pdfBase; } btn.addEventListener("click", async () => { showOverlay(); try { btn.disabled = true; btn.textContent = "Procesando…"; setAttempt(0, PROXIES.length); setStatus(`Preparando para: ${pageQ || "documento"}`); setDetail("Paso 1/4: Descargando la imagen de portada…"); // --- IMAGE (via proxies) let imgBytes; if (replacementUrl.startsWith("data:image/png")) { setDetail("Paso 1/4: Usando imagen integrada…"); const base64 = replacementUrl.split(",")[1]; imgBytes = Uint8Array.from(atob(base64), (c) => c.charCodeAt(0)); } else { const cacheBustedImgUrl = replacementUrl + "?cb=" + Date.now(); const imgResp = await fetchViaProxies(cacheBustedImgUrl, {}, 25000, "imagen"); imgBytes = await imgResp.arrayBuffer(); } setAttempt(0, PROXIES.length); setStatus("Imagen descargada ✅"); setDetail("Paso 2/4: Descargando el PDF… (puede tardar un poco)"); // --- PDF (via proxies) const pdfUrl = getPDFUrlWithParams(); const pdfResp = await fetchViaProxies(pdfUrl, {}, 45000, "PDF"); const pdfBytes = await pdfResp.arrayBuffer(); setAttempt(0, PROXIES.length); setStatus("PDF descargado ✅"); setDetail("Paso 3/4: Aplicando la nueva primera página…"); // --- Modify PDF const { PDFDocument } = PDFLib; const pdfDoc = await PDFDocument.load(pdfBytes); let embedImg; const lower = replacementUrl.toLowerCase(); if (lower.endsWith(".png") || lower.startsWith("data:image/png")) { embedImg = await pdfDoc.embedPng(imgBytes); } else { embedImg = await pdfDoc.embedJpg(imgBytes); } const [firstPage] = pdfDoc.getPages(); const { width, height } = firstPage.getSize(); const newPage = pdfDoc.insertPage(0, [width, height]); newPage.drawImage(embedImg, { x: 0, y: 0, width, height }); pdfDoc.removePage(1); setStatus("Finalizando…"); setDetail("Paso 4/4: Preparando la descarga…"); const modifiedBytes = await pdfDoc.save(); // --- Download const blob = new Blob([modifiedBytes], { type: "application/pdf" }); const blobUrl = URL.createObjectURL(blob); const isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream; if (isIOS) { hideOverlay(); window.open(blobUrl, "_blank"); alert('El PDF se abrió en una nueva pestaña. Usa "Compartir" o "Abrir en…" para guardarlo.'); } else { const a = document.createElement("a"); a.href = blobUrl; a.download = `catalogo_${pageQ || "documento"}.pdf`; document.body.appendChild(a); a.click(); a.remove(); hideOverlay(); } } catch (err) { hideOverlay(); alert("Ocurrió un error. Por favor, inténtalo de nuevo en un momento."); console.error("[flipbook] PDF replace failed:", err); } finally { btn.disabled = false; btn.textContent = SETTINGS.buttonText; } }); console.log("Script Injected"); })();