feat: implement certificate download functionality with image and PDF options

src/Pages/internify/intern/InternCertList.tsx

@@ -52,16 +52,16 @@ export default function SertificateList() {
                     {projects.map((item: Project) => (
                         <div
                             key={item.id}
-                            className="bg-white border border-gray-200 rounded-xl overflow-hidden shadow-sm hover:shadow-md transition-shadow cursor-pointer group"
+                            className="bg-white border border-card-outline rounded-xl overflow-hidden shadow-sm hover:shadow-md transition-shadow cursor-pointer group"
                             onClick={() => navigate(`/intern/certificates/${item.slug}`, { state: { project: item } })}
                         >
                             {/* Thumbnail */}
                             <div className="p-6 pb-0">
                                 <div className="rounded-lg overflow-hidden">
-                                    <div className="w-full h-32 bg-gradient-to-br from-red-400 to-red-600 flex items-center justify-center">
+                                    <div className="w-full h-32 bg-gray-300 flex items-center justify-center">
                                         {(() => {
                                             const Icon = getDynamicIcon(item.project_icon);
-                                            return <Icon className="w-10 h-10 text-white" />;
+                                            return <Icon className="w-10 h-10 text-primary" />;
                                         })()}
                                     </div>
                                 </div>

src/Pages/internify/intern/components/CertificateAvailabe.tsx

@@ -1,8 +1,9 @@
 // CertificateAvailable.tsx
-import { useState } from "react";
+import { useState, useRef } from "react";
 import { Download, Link, Printer } from "lucide-react";
 import type { ProjectDetail } from "../../../../types/project.types";
 import type { Certificate } from "../../../../types/certificate.types";
+import { downloadCertificateAsImage, downloadCertificateAsPdf } from "../../../utils/DownloadImagetoDevice";
 
 interface CertificateAvailableProps {
   project: ProjectDetail | null;
@@ -11,6 +12,9 @@ interface CertificateAvailableProps {
 
 export default function CertificateAvailable({ project, certificate }: CertificateAvailableProps) {
   const [copied, setCopied] = useState(false);
+  const [downloadingImg, setDownloadingImg] = useState(false);
+  const [downloadingPdf, setDownloadingPdf] = useState(false);
+  const certificateRef = useRef<HTMLDivElement>(null);
 
   const handleCopyLink = () => {
     navigator.clipboard.writeText(window.location.href);
@@ -33,12 +37,24 @@ export default function CertificateAvailable({ project, certificate }: Certifica
       })()
     : "-";
 
-  const handleDownload = () => {
-    const a = document.createElement("a");
-    a.href = certificate.image_path;
-    a.download = `Sertifikat - ${certificate.certificate_no}.png`;
-    a.target = "_blank";
-    a.click();
+    const handleDownloadImage = async () => {
+    setDownloadingImg(true);
+    await downloadCertificateAsImage(
+      certificateRef.current,
+      `Sertifikat - ${certificate.certificate_no}`,
+      "png",
+      certificate.image_path
+    );
+    setDownloadingImg(false);
+  };
+
+  const handleDownloadPdf = async () => {
+    setDownloadingPdf(true);
+    await downloadCertificateAsPdf(
+      certificateRef.current,
+      `Sertifikat - ${certificate.certificate_no}`
+    );
+    setDownloadingPdf(false);
   };
 
   return (
@@ -87,11 +103,12 @@ export default function CertificateAvailable({ project, certificate }: Certifica
           <div className="flex flex-col gap-3">
             {/* Unduh Sertifikat */}
             <button
-              onClick={handleDownload}
+              onClick={handleDownloadPdf}
+              disabled={downloadingPdf}
               className="flex items-center justify-center gap-2 w-full bg-red-700 hover:bg-red-800 active:scale-95 transition-all text-white font-semibold py-2 rounded-xl text-sm"
             >
               <Download className="w-4 h-4" />
-              Unduh Sertifikat
+              {downloadingPdf? "Memproses": "Unduh Sertifikat"}
             </button>
 
             {/* Bagikan ke LinkedIn */}
@@ -101,9 +118,12 @@ export default function CertificateAvailable({ project, certificate }: Certifica
 
             {/* Cetak & Salin Link */}
             <div className="grid grid-cols-2 gap-3">
-              <button className="flex flex-col items-center justify-center gap-1.5 border border-card-outline hover:bg-gray-50 active:scale-95 transition-all text-red-700 font-medium py-3.5 rounded-xl text-sm">
+              <button
+                onClick={handleDownloadImage}
+                disabled={downloadingImg}
+                className="flex flex-col items-center justify-center gap-1.5 border border-card-outline hover:bg-gray-50 active:scale-95 transition-all text-red-700 font-medium py-3.5 rounded-xl text-sm">
                 <Printer className="w-5 h-5" />
-                Cetak
+                {downloadingImg? "Memproses" : "Cetak"}
               </button>
               <button
                 onClick={handleCopyLink}

src/Pages/utils/DownloadImagetoDevice.ts

@@ -0,0 +1,85 @@
+// utils/certificateDownload.ts
+import html2canvas from "html2canvas";
+import jsPDF from "jspdf";
+
+/**
+ * Helper: capture sebuah HTMLElement menjadi canvas
+ */
+export const captureCertificateElement = async (
+  element: HTMLElement
+): Promise<HTMLCanvasElement> => {
+  return html2canvas(element, {
+    useCORS: true,
+    allowTaint: false,
+    backgroundColor: "#ffffff",
+    scale: 2, // hasil lebih tajam
+  });
+};
+
+/**
+ * Download elemen sertifikat sebagai PNG/JPG
+ */
+export const downloadCertificateAsImage = async (
+  element: HTMLElement | null,
+  fileName: string,
+  format: "png" | "jpg" = "png",
+  fallbackImageUrl?: string
+): Promise<void> => {
+  try {
+    if (!element) throw new Error("Elemen sertifikat tidak ditemukan");
+
+    const canvas = await captureCertificateElement(element);
+
+    const mimeType = format === "jpg" ? "image/jpeg" : "image/png";
+    const quality = format === "jpg" ? 0.95 : 1;
+    const dataUrl = canvas.toDataURL(mimeType, quality);
+
+    const a = document.createElement("a");
+    a.href = dataUrl;
+    a.download = `${fileName}.${format}`;
+    a.click();
+  } catch (error) {
+    console.error("Gagal mengunduh sertifikat sebagai gambar:", error);
+
+    // fallback: download langsung dari image_path kalau html2canvas gagal (mis. CORS)
+    if (fallbackImageUrl) {
+      const a = document.createElement("a");
+      a.href = fallbackImageUrl;
+      a.download = `${fileName}.png`;
+      a.target = "_blank";
+      a.click();
+    }
+  }
+};
+
+/**
+ * Download elemen sertifikat sebagai PDF
+ */
+export const downloadCertificateAsPdf = async (
+  element: HTMLElement | null,
+  fileName: string
+): Promise<void> => {
+  try {
+    if (!element) throw new Error("Elemen sertifikat tidak ditemukan");
+
+    const canvas = await captureCertificateElement(element);
+    const imgData = canvas.toDataURL("image/png", 1.0);
+
+    const imgWidth = canvas.width;
+    const imgHeight = canvas.height;
+
+    // Tentukan orientasi PDF berdasarkan rasio gambar
+    const orientation = imgWidth > imgHeight ? "landscape" : "portrait";
+
+    const pdf = new jsPDF({
+      orientation,
+      unit: "px",
+      format: [imgWidth, imgHeight],
+    });
+
+    pdf.addImage(imgData, "PNG", 0, 0, imgWidth, imgHeight);
+    pdf.save(`${fileName}.pdf`);
+  } catch (error) {
+    console.error("Gagal mengunduh sertifikat sebagai PDF:", error);
+  }
+};