feat: file preview

backend/src/file/file.controller.ts

@@ -51,7 +51,7 @@ export class FileController {
     const zip = this.fileService.getZip(shareId);
     res.set({
       "Content-Type": "application/zip",
-      "Content-Disposition": `attachment ; filename="pingvin-share-${shareId}.zip"`,
+      "Content-Disposition": contentDisposition(`pingvin-share-${shareId}.zip`),
     });
 
     return new StreamableFile(zip);
@@ -62,14 +62,21 @@ export class FileController {
   async getFile(
     @Res({ passthrough: true }) res: Response,
     @Param("shareId") shareId: string,
-    @Param("fileId") fileId: string
+    @Param("fileId") fileId: string,
+    @Query("download") download = "true"
   ) {
     const file = await this.fileService.get(shareId, fileId);
-    res.set({
+
+    const headers = {
       "Content-Type": file.metaData.mimeType,
       "Content-Length": file.metaData.size,
-      "Content-Disposition": contentDisposition(file.metaData.name),
-    });
+    };
+
+    if (download === "true") {
+      headers["Content-Disposition"] = contentDisposition(file.metaData.name);
+    }
+
+    res.set(headers);
 
     return new StreamableFile(file.file);
   }

frontend/package.json

@@ -22,6 +22,7 @@
     "cookies-next": "^2.1.1",
     "file-saver": "^2.0.5",
     "jose": "^4.11.2",
+    "mime-types": "^2.1.35",
     "moment": "^2.29.4",
     "next": "^13.1.2",
     "next-cookies": "^2.0.3",
@@ -34,6 +35,7 @@
     "yup": "^0.32.11"
   },
   "devDependencies": {
+    "@types/mime-types": "^2.1.1",
     "@types/node": "18.11.18",
     "@types/react": "18.0.26",
     "@types/react-dom": "18.0.10",

frontend/src/components/core/CenterLoader.tsx

@@ -0,0 +1,13 @@
+import { Center, Loader, Stack } from "@mantine/core";
+
+const CenterLoader = () => {
+  return (
+    <Center style={{ height: "70vh" }}>
+      <Stack align="center" spacing={10}>
+        <Loader />
+      </Stack>
+    </Center>
+  );
+};
+
+export default CenterLoader;

frontend/src/components/share/FileList.tsx

@@ -1,15 +1,17 @@
-import { ActionIcon, Loader, Skeleton, Table } from "@mantine/core";
-import { TbCircleCheck, TbDownload } from "react-icons/tb";
+import { ActionIcon, Group, Skeleton, Table } from "@mantine/core";
+import mime from "mime-types";
+import Link from "next/link";
+import { TbDownload, TbEye } from "react-icons/tb";
 import shareService from "../../services/share.service";
-
+import { FileMetaData } from "../../types/File.type";
 import { byteToHumanSizeString } from "../../utils/fileSize.util";
 
 const FileList = ({
   files,
   shareId,
   isLoading,
 }: {
-  files?: any[];
+  files?: FileMetaData[];
   shareId: string;
   isLoading: boolean;
 }) => {
@@ -28,15 +30,21 @@ const FileList = ({
           : files!.map((file) => (
               <tr key={file.name}>
                 <td>{file.name}</td>
-                <td>{byteToHumanSizeString(file.size)}</td>
+                <td>{byteToHumanSizeString(parseInt(file.size))}</td>
                 <td>
-                  {file.uploadingState ? (
-                    file.uploadingState != "finished" ? (
-                      <Loader size={22} />
-                    ) : (
-                      <TbCircleCheck color="green" size={22} />
-                    )
-                  ) : (
+                  <Group position="right">
+                    {shareService.doesFileSupportPreview(file.name) && (
+                      <ActionIcon
+                        component={Link}
+                        href={`/share/${shareId}/preview/${
+                          file.id
+                        }?type=${mime.contentType(file.name)}`}
+                        target="_blank"
+                        size={25}
+                      >
+                        <TbEye />
+                      </ActionIcon>
+                    )}
                     <ActionIcon
                       size={25}
                       onClick={async () => {
@@ -45,7 +53,7 @@ const FileList = ({
                     >
                       <TbDownload />
                     </ActionIcon>
-                  )}
+                  </Group>
                 </td>
               </tr>
             ))}

frontend/src/pages/account/reverseShares.tsx

@@ -4,7 +4,6 @@ import {
   Button,
   Center,
   Group,
-  LoadingOverlay,
   Stack,
   Table,
   Text,
@@ -18,6 +17,7 @@ import { useRouter } from "next/router";
 import { useEffect, useState } from "react";
 import { TbInfoCircle, TbLink, TbPlus, TbTrash } from "react-icons/tb";
 import showShareLinkModal from "../../components/account/showShareLinkModal";
+import CenterLoader from "../../components/core/CenterLoader";
 import Meta from "../../components/Meta";
 import showCreateReverseShareModal from "../../components/share/modals/showCreateReverseShareModal";
 import useConfig from "../../hooks/config.hook";
@@ -50,7 +50,7 @@ const MyShares = () => {
   if (!user) {
     router.replace("/");
   } else {
-    if (!reverseShares) return <LoadingOverlay visible />;
+    if (!reverseShares) return <CenterLoader />;
     return (
       <>
         <Meta title="My shares" />

frontend/src/pages/share/[shareId].tsx → frontend/src/pages/share/[shareId]/index.tsx

@@ -2,13 +2,13 @@ import { Box, Group, Text, Title } from "@mantine/core";
 import { useModals } from "@mantine/modals";
 import { GetServerSidePropsContext } from "next";
 import { useEffect, useState } from "react";
-import Meta from "../../components/Meta";
-import DownloadAllButton from "../../components/share/DownloadAllButton";
-import FileList from "../../components/share/FileList";
-import showEnterPasswordModal from "../../components/share/showEnterPasswordModal";
-import showErrorModal from "../../components/share/showErrorModal";
-import shareService from "../../services/share.service";
-import { Share as ShareType } from "../../types/share.type";
+import Meta from "../../../components/Meta";
+import DownloadAllButton from "../../../components/share/DownloadAllButton";
+import FileList from "../../../components/share/FileList";
+import showEnterPasswordModal from "../../../components/share/showEnterPasswordModal";
+import showErrorModal from "../../../components/share/showErrorModal";
+import shareService from "../../../services/share.service";
+import { Share as ShareType } from "../../../types/share.type";
 
 export function getServerSideProps(context: GetServerSidePropsContext) {
   return {

frontend/src/pages/share/[shareId]/preview/[fileId].tsx

@@ -0,0 +1,92 @@
+import { Center, Stack, Text, Title } from "@mantine/core";
+import { GetServerSidePropsContext } from "next";
+import { useState } from "react";
+
+export function getServerSideProps(context: GetServerSidePropsContext) {
+  const { shareId, fileId } = context.params!;
+
+  const mimeType = context.query.type as string;
+
+  return {
+    props: { shareId, fileId, mimeType },
+  };
+}
+
+const UnSupportedFile = () => {
+  return (
+    <Center style={{ height: "70vh" }}>
+      <Stack align="center" spacing={10}>
+        <Title order={3}>Preview not supported</Title>
+        <Text>
+          A preview for thise file type is unsupported. Please download the file
+          to view it.
+        </Text>
+      </Stack>
+    </Center>
+  );
+};
+
+const FilePreview = ({
+  shareId,
+  fileId,
+  mimeType,
+}: {
+  shareId: string;
+  fileId: string;
+  mimeType: string;
+}) => {
+  const [isNotSupported, setIsNotSupported] = useState(false);
+
+  if (isNotSupported) return <UnSupportedFile />;
+
+  if (mimeType == "application/pdf") {
+    window.location.href = `/api/shares/${shareId}/files/${fileId}?download=false`;
+    return null;
+  } else if (mimeType.startsWith("video/")) {
+    return (
+      <video
+        width="100%"
+        controls
+        onError={() => {
+          setIsNotSupported(true);
+        }}
+      >
+        <source src={`/api/shares/${shareId}/files/${fileId}?download=false`} />
+      </video>
+    );
+  } else if (mimeType.startsWith("image/")) {
+    return (
+      // eslint-disable-next-line @next/next/no-img-element
+      <img
+        onError={() => {
+          setIsNotSupported(true);
+        }}
+        src={`/api/shares/${shareId}/files/${fileId}?download=false`}
+        alt={`${fileId}_preview`}
+        width="100%"
+      />
+    );
+  } else if (mimeType.startsWith("audio/")) {
+    return (
+      <Center style={{ height: "70vh" }}>
+        <Stack align="center" spacing={10} style={{ width: "100%" }}>
+          <audio
+            controls
+            style={{ width: "100%" }}
+            onError={() => {
+              setIsNotSupported(true);
+            }}
+          >
+            <source
+              src={`/api/shares/${shareId}/files/${fileId}?download=false`}
+            />
+          </audio>
+        </Stack>
+      </Center>
+    );
+  } else {
+    return <UnSupportedFile />;
+  }
+};
+
+export default FilePreview;

frontend/src/services/share.service.ts

@@ -1,5 +1,7 @@
 import { setCookie } from "cookies-next";
+import mime from "mime-types";
 import { FileUploadResponse } from "../types/File.type";
+
 import {
   CreateShare,
   MyReverseShare,
@@ -47,7 +49,22 @@ const getShareToken = async (id: string, password?: string) => {
 };
 
 const isShareIdAvailable = async (id: string): Promise<boolean> => {
-  return (await api.get(`shares/isShareIdAvailable/${id}`)).data.isAvailable;
+  return (await api.get(`/shares/isShareIdAvailable/${id}`)).data.isAvailable;
+};
+
+const doesFileSupportPreview = (fileName: string) => {
+  const mimeType = mime.contentType(fileName);
+
+  if (!mimeType) return false;
+
+  const supportedMimeTypes = [
+    mimeType.startsWith("video/"),
+    mimeType.startsWith("image/"),
+    mimeType.startsWith("audio/"),
+    mimeType == "application/pdf",
+  ];
+
+  return supportedMimeTypes.some((isSupported) => isSupported);
 };
 
 const downloadFile = async (shareId: string, fileId: string) => {
@@ -114,6 +131,7 @@ export default {
   get,
   remove,
   getMetaData,
+  doesFileSupportPreview,
   getMyShares,
   isShareIdAvailable,
   downloadFile,

frontend/src/types/File.type.ts

@@ -1,3 +1,9 @@
 export type FileUpload = File & { uploadingProgress: number };
 
 export type FileUploadResponse = { id: string; name: string };
+
+export type FileMetaData = {
+  id: string;
+  name: string;
+  size: string;
+};