refactor: implement server-side CMYK PDF caching and improve frontend export UI with dynamic DOM injection
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Lucas Rayan committed
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commit
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3 files changed
+114
-112
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@@ -23,10 +23,28 @@ export async function GET(request) {
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}
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const tmpDir = os.tmpdir();
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const tmpRgbPdf = path.join(tmpDir, `espdocs-mod-${modulo}-${Date.now()}-rgb.pdf`);
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const tmpCmykPdf = path.join(tmpDir, `espdocs-mod-${modulo}-${Date.now()}-cmyk.pdf`);
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const cachedCmykPdf = path.join(tmpDir, `espdocs-cached-cmyk-mod-${modulo}.pdf`);
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const htmlMtime = fs.statSync(htmlFile).mtimeMs;
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// Se já foi gerado no /tmp e o HTML não mudou, entrega instantaneamente
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if (fs.existsSync(cachedCmykPdf)) {
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const cachedMtime = fs.statSync(cachedCmykPdf).mtimeMs;
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if (cachedMtime >= htmlMtime) {
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const cachedBuffer = fs.readFileSync(cachedCmykPdf);
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return new NextResponse(cachedBuffer, {
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status: 200,
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headers: {
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"Content-Type": "application/pdf",
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"Content-Disposition": `attachment; filename="LASER-ESP32-Modulo-${modulo}-CMYK.pdf"`,
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"Content-Length": cachedBuffer.length.toString()
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}
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});
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}
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}
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const tmpRgbPdf = path.join(tmpDir, `espdocs-tmp-${modulo}-${Date.now()}-rgb.pdf`);
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let browser = null;
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try {
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browser = await puppeteer.launch({
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headless: "new",
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@@ -40,15 +58,15 @@ export async function GET(request) {
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const page = await browser.newPage();
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await page.setViewport({ width: 1200, height: 1600, deviceScaleFactor: 2 });
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await page.goto(`file://${htmlFile}`, { waitUntil: "networkidle0", timeout: 60000 });
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await page.goto(`file://${htmlFile}`, { waitUntil: "load", timeout: 30000 });
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// Aguarda o Paged.js concluir a montagem
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await page.waitForFunction(() => {
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const pages = document.querySelectorAll(".pagedjs_page");
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return pages.length > 0 && !document.querySelector(".aviso-carregando");
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}, { timeout: 30000 });
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}, { timeout: 25000 });
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await new Promise((r) => setTimeout(r, 1000));
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await new Promise((r) => setTimeout(r, 600));
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await page.pdf({
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path: tmpRgbPdf,
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@@ -62,10 +80,10 @@ export async function GET(request) {
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browser = null;
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// Converte para CMYK (DeviceCMYK / ISO Coated)
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const gsCmd = `gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sColorConversionStrategy=CMYK -dProcessColorModel=/DeviceCMYK -dCompatibilityLevel=1.4 -sOutputFile="${tmpCmykPdf}" "${tmpRgbPdf}"`;
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const gsCmd = `gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sColorConversionStrategy=CMYK -dProcessColorModel=/DeviceCMYK -dCompatibilityLevel=1.4 -sOutputFile="${cachedCmykPdf}" "${tmpRgbPdf}"`;
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execSync(gsCmd, { stdio: "pipe" });
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const pdfBuffer = fs.readFileSync(tmpCmykPdf);
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const pdfBuffer = fs.readFileSync(cachedCmykPdf);
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return new NextResponse(pdfBuffer, {
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status: 200,
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@@ -84,7 +102,6 @@ export async function GET(request) {
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} finally {
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if (browser) await browser.close();
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if (fs.existsSync(tmpRgbPdf)) fs.unlinkSync(tmpRgbPdf);
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if (fs.existsSync(tmpCmykPdf)) fs.unlinkSync(tmpCmykPdf);
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}
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}
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@@ -1 +0,0 @@
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[{"name":"generate-buildid","duration":224,"timestamp":13103889101,"id":4,"parentId":1,"tags":{},"startTime":1787229898989,"traceId":"aad4d6d36b5e5e6b"},{"name":"load-custom-routes","duration":309,"timestamp":13103889458,"id":5,"parentId":1,"tags":{},"startTime":1787229898989,"traceId":"aad4d6d36b5e5e6b"},{"name":"next-build","duration":129948,"timestamp":13103762107,"id":1,"tags":{"buildMode":"default","isTurboBuild":"false","version":"15.5.9"},"startTime":1787229898862,"traceId":"aad4d6d36b5e5e6b"}]
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+89
-103
@@ -1961,126 +1961,112 @@ Temperatura: 26.1 C | Umidade: 62.0 %</code></pre>
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</p>
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</section>
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<!-- ══════════════════════ PAINEL DE EXPORTAÇÃO ══════════════════════ -->
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<div class="painel-exportacao" id="painelExportacao" style="position: fixed !important; top: 18px !important; right: 20px !important; z-index: 999999 !important; display: flex !important;">
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<script>
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window.PagedConfig = {
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before: () => document.querySelector(".aviso-carregando")?.remove(),
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};
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function montarPainelFlutuante() {
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if (document.getElementById("painelExportacao")) return;
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// Injeta estilo para position fixed sem ser sanitizado pelo parser do Paged.js
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const style = document.createElement("style");
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style.textContent = `
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#painelExportacao {
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position: fixed !important;
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top: 18px !important;
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right: 20px !important;
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z-index: 999999 !important;
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display: flex !important;
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}
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#toastExportacao {
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position: fixed !important;
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bottom: 24px !important;
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right: 24px !important;
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z-index: 1000000 !important;
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}
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@media print {
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#painelExportacao, #toastExportacao {
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display: none !important;
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}
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}
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`;
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document.head.appendChild(style);
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const painel = document.createElement("div");
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painel.id = "painelExportacao";
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painel.className = "painel-exportacao";
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painel.innerHTML = `
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<span class="painel-exportacao-titulo">
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<svg viewBox="0 0 24 24" width="13" height="13" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
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<polyline points="6 9 6 2 18 2 18 9"></polyline>
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<path d="M6 18H4a2 2 0 0 1-2-2v-5a2 2 0 0 1 2-2h16a2 2 0 0 1 2 2v5a2 2 0 0 1-2 2h-2"></path>
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<rect x="6" y="14" width="12" height="8"></rect>
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</svg>
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<svg viewBox="0 0 24 24" width="13" height="13" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 6 2 18 2 18 9"></polyline><path d="M6 18H4a2 2 0 0 1-2-2v-5a2 2 0 0 1 2-2h16a2 2 0 0 1 2 2v5a2 2 0 0 1-2 2h-2"></path><rect x="6" y="14" width="12" height="8"></rect></svg>
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Apostila:
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</span>
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<button type="button" class="btn-exportar btn-exportar-rgb" id="btnExportarRgb" title="Imprimir ou Salvar em PDF (padrão RGB do navegador)">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
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<path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
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<polyline points="14 2 14 8 20 8"></polyline>
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<line x1="16" y1="13" x2="8" y2="13"></line>
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<line x1="16" y1="17" x2="8" y2="17"></line>
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<polyline points="10 9 9 9 8 9"></polyline>
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</svg>
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<button type="button" class="btn-exportar btn-exportar-rgb" id="btnExportarRgb" title="Imprimir ou Salvar em PDF (padrão RGB)">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path><polyline points="14 2 14 8 20 8"></polyline><line x1="16" y1="13" x2="8" y2="13"></line><line x1="16" y1="17" x2="8" y2="17"></line><polyline points="10 9 9 9 8 9"></polyline></svg>
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<span>Exportar PDF</span>
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</button>
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<button type="button" class="btn-exportar btn-exportar-cmyk" id="btnExportarCmyk" title="Exportar PDF em CMYK (ISO Coated) para gráfica">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
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<circle cx="12" cy="12" r="10"></circle>
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<path d="M12 2a14.5 14.5 0 0 0 0 20 14.5 14.5 0 0 0 0-20"></path>
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<path d="M2 12h20"></path>
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</svg>
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"></circle><path d="M12 2a14.5 14.5 0 0 0 0 20 14.5 14.5 0 0 0 0-20"></path><path d="M2 12h20"></path></svg>
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<span>Exportar em CMYK</span>
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</button>
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</div>
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`;
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<div class="toast-exportacao" id="toastExportacao" style="position: fixed !important; bottom: 24px !important; right: 24px !important; z-index: 1000000 !important;"></div>
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const toast = document.createElement("div");
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toast.id = "toastExportacao";
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toast.className = "toast-exportacao";
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<script>
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let paginacaoConcluida = false;
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const painelExportacao = document.getElementById("painelExportacao");
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const toastExportacao = document.getElementById("toastExportacao");
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document.body.appendChild(painel);
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document.body.appendChild(toast);
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function fixarPainelNaTela() {
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if (painelExportacao) {
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painelExportacao.style.cssText = "position: fixed !important; top: 18px !important; right: 20px !important; z-index: 999999 !important; display: flex !important;";
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if (!document.body.contains(painelExportacao)) {
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document.body.appendChild(painelExportacao);
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}
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}
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if (toastExportacao) {
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toastExportacao.style.cssText = "position: fixed !important; bottom: 24px !important; right: 24px !important; z-index: 1000000 !important;";
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if (!document.body.contains(toastExportacao)) {
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document.body.appendChild(toastExportacao);
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}
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}
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}
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document.getElementById("btnExportarRgb").onclick = () => window.print();
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window.PagedConfig = {
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before: () => {
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document.querySelector(".aviso-carregando")?.remove();
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// Remove do fluxo do DOM para o Paged.js não paginar como conteúdo
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painelExportacao?.remove();
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toastExportacao?.remove();
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},
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after: () => {
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paginacaoConcluida = true;
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document.body.classList.add("pagedjs-pronto");
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fixarPainelNaTela();
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}
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};
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// Oculta painel na impressão nativa
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window.addEventListener("beforeprint", () => {
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if (painelExportacao) painelExportacao.style.setProperty("display", "none", "important");
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if (toastExportacao) toastExportacao.style.setProperty("display", "none", "important");
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});
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window.addEventListener("afterprint", () => {
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if (painelExportacao) painelExportacao.style.setProperty("display", "flex", "important");
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});
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function exibirToast(mensagem, tipo = "info", duracao = 4000) {
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const toast = document.getElementById("toastExportacao") || toastExportacao;
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if (!toast) return;
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if (!document.body.contains(toast)) document.body.appendChild(toast);
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toast.textContent = mensagem;
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toast.className = `toast-exportacao ativo ${tipo}`;
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clearTimeout(toast._timer);
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toast._timer = setTimeout(() => {
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toast.classList.remove("ativo");
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}, duracao);
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}
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document.addEventListener("click", (e) => {
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const btnRgb = e.target.closest("#btnExportarRgb");
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const btnCmyk = e.target.closest("#btnExportarCmyk");
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if (btnRgb) {
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if (!paginacaoConcluida) {
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exibirToast("Aguarde a paginação terminar antes de exportar...", "info", 2500);
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return;
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}
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window.print();
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}
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if (btnCmyk) {
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const textoOriginal = btnCmyk.innerHTML;
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btnCmyk.disabled = true;
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btnCmyk.classList.add("carregando");
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btnCmyk.innerHTML = `<span class="spinner-exportar"></span><span>Processando CMYK...</span>`;
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document.getElementById("btnExportarCmyk").onclick = async () => {
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const btn = document.getElementById("btnExportarCmyk");
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const txt = btn.innerHTML;
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btn.disabled = true;
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btn.innerHTML = `<span class="spinner-exportar"></span><span>Baixando CMYK...</span>`;
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exibirToast("Gerando PDF em CMYK (ISO Coated)... O download iniciará em instantes.", "info", 15000);
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const iframe = document.createElement("iframe");
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iframe.style.display = "none";
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iframe.src = "/api/export-cmyk?modulo=1";
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document.body.appendChild(iframe);
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try {
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const res = await fetch("/api/export-cmyk?modulo=1");
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if (!res.ok) throw new Error("Erro no servidor (" + res.status + ")");
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const blob = await res.blob();
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const url = URL.createObjectURL(blob);
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const a = document.createElement("a");
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a.style.display = "none";
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a.href = url;
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a.download = "LASER-ESP32-Modulo-1-CMYK.pdf";
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document.body.appendChild(a);
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a.click();
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setTimeout(() => { a.remove(); URL.revokeObjectURL(url); }, 1000);
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exibirToast("✅ PDF em CMYK baixado com sucesso!", "sucesso", 4000);
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} catch (err) {
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console.error("Erro CMYK:", err);
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exibirToast("❌ Erro ao baixar PDF: " + err.message, "erro", 6000);
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} finally {
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btn.disabled = false;
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btn.innerHTML = txt;
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}
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};
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}
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setTimeout(() => {
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btnCmyk.disabled = false;
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btnCmyk.classList.remove("carregando");
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btnCmyk.innerHTML = textoOriginal;
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setTimeout(() => iframe.remove(), 60000);
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}, 8000);
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function exibirToast(msg, tipo = "info", dur = 4000) {
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const t = document.getElementById("toastExportacao");
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if (!t) return;
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t.textContent = msg;
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t.className = "toast-exportacao ativo " + tipo;
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clearTimeout(t._timer);
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t._timer = setTimeout(() => t.classList.remove("ativo"), dur);
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}
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});
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</script>
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<script src="../assets/paged.polyfill.js"></script>
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<script>
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class ExportHandler extends window.Paged.Handler {
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afterRendered() {
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montarPainelFlutuante();
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}
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}
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window.Paged.registerHandlers(ExportHandler);
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</script>
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</body>
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</html>
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