feat: add thumbnails and attachment viewer

apps/web/next.config.js

@@ -30,23 +30,50 @@ const config = {
   typescript: { ignoreBuildErrors: true },
 
   images: {
-    remotePatterns: [
-      {
-        protocol: "https",
-        hostname:
-          env("S3_FORCE_PATH_STYLE") === "true"
-            ? `${env("NEXT_PUBLIC_STORAGE_DOMAIN")}`
-            : `*.${env("NEXT_PUBLIC_STORAGE_DOMAIN")}`,
-      },
-      {
-        protocol: "http",
-        hostname: "localhost",
-      },
-      {
-        protocol: "https",
-        hostname: "*.googleusercontent.com",
-      },
-    ],
+    remotePatterns: (() => {
+      /** @type {Array<{protocol: "http" | "https", hostname: string}>} */
+      const patterns = [
+        {
+          protocol: "https",
+          hostname:
+            env("S3_FORCE_PATH_STYLE") === "true"
+              ? `${env("NEXT_PUBLIC_STORAGE_DOMAIN")}`
+              : `*.${env("NEXT_PUBLIC_STORAGE_DOMAIN")}`,
+        },
+        {
+          protocol: "http",
+          hostname: "localhost",
+        },
+        {
+          protocol: "https",
+          hostname: "*.googleusercontent.com",
+        },
+      ];
+
+      // Extract root domain from S3_ENDPOINT and add wildcard pattern
+      const s3Endpoint = env("S3_ENDPOINT");
+      if (s3Endpoint) {
+        try {
+          const url = new URL(s3Endpoint);
+          const hostname = url.hostname;
+          const protocol = url.protocol.replace(":", "");
+
+          // Extract root domain (last 2 parts: e.g. cloudflarestorage.com)
+          const parts = hostname.split(".");
+          if (parts.length >= 2) {
+            const rootDomain = parts.slice(-2).join(".");
+            patterns.push({
+              protocol: protocol === "http" ? "http" : "https",
+              hostname: `*.${rootDomain}`,
+            });
+          }
+        } catch {
+          // If S3_ENDPOINT is not a valid URL, ignore it
+        }
+      }
+
+      return patterns;
+    })(),
   },
   webpack(config) {
     config.module.rules.push({

apps/web/src/views/card/components/AttachmentThumbnails.tsx

@@ -0,0 +1,227 @@
+import Image from "next/image";
+import { Dialog, Transition } from "@headlessui/react";
+import { Fragment, useEffect, useState } from "react";
+import { HiChevronLeft, HiChevronRight, HiXMark } from "react-icons/hi2";
+
+interface Attachment {
+  publicId: string;
+  contentType: string;
+  url: string | null;
+  originalFilename: string | null;
+  s3Key: string;
+}
+
+export function AttachmentThumbnails({
+  attachments,
+}: {
+  attachments?: Attachment[];
+}) {
+  const imageAttachments =
+    attachments?.filter(
+      (attachment) =>
+        attachment.contentType.startsWith("image/") && attachment.url,
+    ) ?? [];
+
+  const [selectedIndex, setSelectedIndex] = useState<number | null>(null);
+
+  // Keyboard navigation
+  useEffect(() => {
+    if (selectedIndex === null) return;
+
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === "Escape") {
+        setSelectedIndex(null);
+      } else if (e.key === "ArrowLeft") {
+        setSelectedIndex((prev) => {
+          if (prev === null) return null;
+          return prev === 0 ? imageAttachments.length - 1 : prev - 1;
+        });
+      } else if (e.key === "ArrowRight") {
+        setSelectedIndex((prev) => {
+          if (prev === null) return null;
+          return prev === imageAttachments.length - 1 ? 0 : prev + 1;
+        });
+      }
+    };
+
+    window.addEventListener("keydown", handleKeyDown);
+    return () => window.removeEventListener("keydown", handleKeyDown);
+  }, [selectedIndex, imageAttachments.length]);
+
+  if (imageAttachments.length === 0) {
+    return null;
+  }
+
+  const openViewer = (index: number) => {
+    setSelectedIndex(index);
+  };
+
+  const closeViewer = () => {
+    setSelectedIndex(null);
+  };
+
+  const goToPrevious = () => {
+    if (selectedIndex === null) return;
+    const newIndex =
+      selectedIndex === 0 ? imageAttachments.length - 1 : selectedIndex - 1;
+    setSelectedIndex(newIndex);
+  };
+
+  const goToNext = () => {
+    if (selectedIndex === null) return;
+    const newIndex =
+      selectedIndex === imageAttachments.length - 1 ? 0 : selectedIndex + 1;
+    setSelectedIndex(newIndex);
+  };
+
+  const selectedAttachment =
+    selectedIndex !== null ? imageAttachments[selectedIndex] : null;
+
+  return (
+    <>
+      <div className="mb-3 flex flex-wrap gap-2">
+        {imageAttachments.map((attachment, index) => {
+          if (!attachment.url) return null;
+          return (
+            <AttachmentThumbnail
+              key={attachment.publicId}
+              attachment={{
+                publicId: attachment.publicId,
+                url: attachment.url,
+                originalFilename: attachment.originalFilename ?? "",
+              }}
+              onClick={() => openViewer(index)}
+            />
+          );
+        })}
+      </div>
+
+      <Transition.Root show={selectedIndex !== null} as={Fragment}>
+        <Dialog as="div" className="relative z-50" onClose={() => {}} static>
+          <Transition.Child
+            as={Fragment}
+            enter="ease-out duration-300"
+            enterFrom="opacity-0"
+            enterTo="opacity-100"
+            leave="ease-in duration-200"
+            leaveFrom="opacity-100"
+            leaveTo="opacity-0"
+          >
+            <div
+              className="fixed inset-0 bg-light-50 transition-opacity dark:bg-dark-50"
+              onClick={closeViewer}
+            />
+          </Transition.Child>
+
+          <div className="fixed inset-0 z-10 overflow-y-auto">
+            <div className="fixed right-4 top-4 z-20 flex gap-2">
+              {imageAttachments.length > 1 && selectedIndex !== null && (
+                <button
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    goToPrevious();
+                  }}
+                  className="rounded-full bg-light-50 p-1.5 text-light-1000 transition-colors hover:bg-light-100 focus:outline-none dark:bg-dark-50 dark:text-dark-1000 dark:hover:bg-dark-100"
+                  aria-label="Previous image"
+                >
+                  <HiChevronLeft className="h-4 w-4" />
+                </button>
+              )}
+
+              {imageAttachments.length > 1 && selectedIndex !== null && (
+                <button
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    goToNext();
+                  }}
+                  className="rounded-full bg-light-50 p-1.5 text-light-1000 transition-colors hover:bg-light-100 focus:outline-none dark:bg-dark-50 dark:text-dark-1000 dark:hover:bg-dark-100"
+                  aria-label="Next image"
+                >
+                  <HiChevronRight className="h-4 w-4" />
+                </button>
+              )}
+
+              {selectedIndex !== null && (
+                <button
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    closeViewer();
+                  }}
+                  className="rounded-full bg-light-50 p-1.5 text-light-1000 transition-colors hover:bg-light-100 focus:outline-none dark:bg-dark-50 dark:text-dark-1000 dark:hover:bg-dark-100"
+                  aria-label="Close"
+                >
+                  <HiXMark className="h-4 w-4" />
+                </button>
+              )}
+            </div>
+
+            <div className="flex min-h-full items-center justify-center p-4">
+              <Transition.Child
+                as={Fragment}
+                enter="ease-out duration-300"
+                enterFrom="opacity-0 scale-95"
+                enterTo="opacity-100 scale-100"
+                leave="ease-in duration-200"
+                leaveFrom="opacity-100 scale-100"
+                leaveTo="opacity-0 scale-95"
+              >
+                <Dialog.Panel
+                  className="relative w-full max-w-7xl"
+                  onClick={(e) => e.stopPropagation()}
+                >
+                  {selectedAttachment?.url && (
+                    <div className="relative">
+                      <div className="relative mx-auto max-h-[90vh] w-full">
+                        <Image
+                          src={selectedAttachment.url}
+                          alt={
+                            selectedAttachment.originalFilename ?? "Attachment"
+                          }
+                          width={1920}
+                          height={1080}
+                          className="mx-auto max-h-[90vh] w-auto object-contain"
+                          unoptimized
+                        />
+                      </div>
+
+                      {imageAttachments.length > 1 && (
+                        <div className="absolute bottom-4 left-1/2 -translate-x-1/2 rounded-full bg-black/50 px-3 py-1.5 text-[10px] text-white">
+                          {selectedIndex !== null && selectedIndex + 1} /{" "}
+                          {imageAttachments.length}
+                        </div>
+                      )}
+                    </div>
+                  )}
+                </Dialog.Panel>
+              </Transition.Child>
+            </div>
+          </div>
+        </Dialog>
+      </Transition.Root>
+    </>
+  );
+}
+
+function AttachmentThumbnail({
+  attachment,
+  onClick,
+}: {
+  attachment: { publicId: string; url: string; originalFilename: string };
+  onClick: () => void;
+}) {
+  return (
+    <button
+      onClick={onClick}
+      className="relative h-16 w-16 overflow-hidden rounded-xl border border-light-300 transition-transform hover:scale-105 dark:border-dark-300"
+      aria-label={`View ${attachment.originalFilename}`}
+    >
+      <Image
+        src={attachment.url}
+        alt={attachment.originalFilename}
+        fill
+        className="object-cover"
+        sizes="64px"
+      />
+    </button>
+  );
+}

apps/web/src/views/card/index.tsx

@@ -20,6 +20,7 @@ import { api } from "~/utils/api";
 import { formatMemberDisplayName, getAvatarUrl } from "~/utils/helpers";
 import { DeleteLabelConfirmation } from "../../components/DeleteLabelConfirmation";
 import ActivityList from "./components/ActivityList";
+import { AttachmentThumbnails } from "./components/AttachmentThumbnails";
 import { AttachmentUpload } from "./components/AttachmentUpload";
 import Checklists from "./components/Checklists";
 import { DeleteCardConfirmation } from "./components/DeleteCardConfirmation";
@@ -288,9 +289,18 @@ export default function CardPage({ isTemplate }: { isTemplate?: boolean }) {
                     setActiveChecklistForm={setActiveChecklistForm}
                   />
                   {!isTemplate && (
-                    <div className="mt-6">
-                      <AttachmentUpload cardPublicId={cardId ?? ""} />
-                    </div>
+                    <>
+                      {card?.attachments.length > 0 && (
+                        <div className="mt-6">
+                          <AttachmentThumbnails
+                            attachments={card?.attachments}
+                          />
+                        </div>
+                      )}
+                      <div className="mt-6">
+                        <AttachmentUpload cardPublicId={cardId} />
+                      </div>
+                    </>
                   )}
                   <div className="border-t-[1px] border-light-300 pt-12 dark:border-dark-300">
                     <h2 className="text-md pb-4 font-medium text-light-1000 dark:text-dark-1000">

packages/api/src/routers/card.ts

@@ -10,6 +10,7 @@ import * as workspaceRepo from "@kan/db/repository/workspace.repo";
 
 import { createTRPCRouter, protectedProcedure, publicProcedure } from "../trpc";
 import { assertUserInWorkspace } from "../utils/auth";
+import { generateDownloadUrl } from "../utils/s3";
 
 export const cardRouter = createTRPCRouter({
   create: protectedProcedure
@@ -574,7 +575,20 @@ export const cardRouter = createTRPCRouter({
     .input(z.object({ cardPublicId: z.string().min(12) }))
     .output(
       z.custom<
-        Awaited<ReturnType<typeof cardRepo.getWithListAndMembersByPublicId>>
+        Omit<
+          NonNullable<
+            Awaited<ReturnType<typeof cardRepo.getWithListAndMembersByPublicId>>
+          >,
+          "attachments"
+        > & {
+          attachments: {
+            publicId: string;
+            contentType: string;
+            s3Key: string;
+            originalFilename: string | null;
+            url: string | null;
+          }[];
+        }
       >(),
     )
     .query(async ({ ctx, input }) => {
@@ -612,7 +626,44 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      return result;
+      // Generate URLs for all attachments
+      const bucket = process.env.NEXT_PUBLIC_ATTACHMENTS_BUCKET_NAME;
+      if (result.attachments && Array.isArray(result.attachments)) {
+        const attachments = result.attachments as {
+          publicId: string;
+          contentType: string;
+          s3Key: string;
+          originalFilename: string | null;
+        }[];
+
+        const attachmentsWithUrls = await Promise.all(
+          attachments.map(async (attachment) => {
+            const base = {
+              publicId: attachment.publicId,
+              contentType: attachment.contentType,
+              s3Key: attachment.s3Key,
+              originalFilename: attachment.originalFilename,
+            };
+            if (!bucket || !attachment.s3Key) {
+              return { ...base, url: null };
+            }
+            try {
+              const url = await generateDownloadUrl(
+                bucket,
+                attachment.s3Key,
+                3600, // 1 hour expiration
+              );
+              return { ...base, url };
+            } catch {
+              // If URL generation fails, return attachment with url: null
+              return { ...base, url: null };
+            }
+          }),
+        );
+        return { ...result, attachments: attachmentsWithUrls };
+      }
+
+      return { ...result, attachments: [] };
     }),
   update: protectedProcedure
     .meta({

packages/db/src/repository/card.repo.ts

@@ -409,6 +409,14 @@ export const getWithListAndMembersByPublicId = async (
           },
         },
       },
+      attachments: {
+        columns: {
+          publicId: true,
+          contentType: true,
+          s3Key: true,
+          originalFilename: true,
+        },
+      },
       checklists: {
         columns: {
           publicId: true,