fix error sharing image and failing to upload, fix upload in webkit/safari, and test it

src/components/PhotoDialog.vue

@@ -350,6 +350,7 @@ export default class PhotoDialog extends Vue {
     const token = await accessToken(this.activeDid);
     const headers = {
       Authorization: "Bearer " + token,
+      // axios fills in Content-Type of multipart/form-data
     };
     const formData = new FormData();
     if (!this.blob) {

src/db/tables/temp.ts

@@ -2,7 +2,8 @@
 
 export type Temp = {
   id: string;
-  blob?: Blob;
+  blob?: Blob; // deprecated because webkit (Safari) does not support Blob
+  blobB64?: string; // base64-encoded blob
 };
 
 /**

src/libs/util.ts

@@ -26,6 +26,7 @@ import { createPeerDid } from "@/libs/crypto/vc/didPeer";
 
 export const PRIVACY_MESSAGE =
   "The data you send will be visible to the world -- except: your IDs and the IDs of anyone you tag will stay private, only visible to them and others you explicitly allow.";
+export const SHARED_PHOTO_BASE64_KEY = "shared-photo-base64";
 
 /* eslint-disable prettier/prettier */
 export const UNIT_SHORT: Record<string, string> = {
@@ -116,6 +117,38 @@ export const isGiveRecordTheUserCanConfirm = (
   );
 };
 
+export async function blobToBase64(blob: Blob): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onloadend = () => resolve(reader.result as string); // potential problem if it returns an ArrayBuffer?
+    reader.onerror = reject;
+    reader.readAsDataURL(blob);
+  });
+}
+
+export function base64ToBlob(base64DataUrl: string, sliceSize = 512) {
+  // Extract the content type and the Base64 data
+  const [metadata, base64] = base64DataUrl.split(",");
+  const contentTypeMatch = metadata.match(/data:(.*?);base64/);
+  const contentType = contentTypeMatch ? contentTypeMatch[1] : "";
+
+  const byteCharacters = atob(base64);
+  const byteArrays = [];
+
+  for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
+    const slice = byteCharacters.slice(offset, offset + sliceSize);
+
+    const byteNumbers = new Array(slice.length);
+    for (let i = 0; i < slice.length; i++) {
+      byteNumbers[i] = slice.charCodeAt(i);
+    }
+
+    const byteArray = new Uint8Array(byteNumbers);
+    byteArrays.push(byteArray);
+  }
+  return new Blob(byteArrays, { type: contentType });
+}
+
 /**
  * @returns the DID of the person who offered, or undefined if hidden
  * @param veriClaim is expected to have fields: claim and issuer

src/views/GiftedDetails.vue

@@ -64,7 +64,7 @@
       </div>
     </div>
 
-    <div class="flex justify-center mt-4">
+    <div class="flex justify-center mt-4" data-testid="imagery">
       <span v-if="imageUrl" class="flex justify-between">
         <a :href="imageUrl" target="_blank" class="text-blue-500 ml-4">
           <img :src="imageUrl" class="h-24 rounded-xl" />

src/views/HomeView.vue

@@ -277,7 +277,10 @@
                 </router-link>
               </span>
             </div>
-            <div v-if="record.image" class="flex justify-center">
+            <div
+              v-if="record.image"
+              class="flex justify-center"
+            >
               <a :href="record.image" target="_blank">
                 <img :src="record.image" class="h-24 mt-2 rounded-xl" />
               </a>

src/views/SharedPhotoView.vue

@@ -66,7 +66,8 @@ import {
 } from "@/constants/app";
 import { db } from "@/db/index";
 import { MASTER_SETTINGS_KEY } from "@/db/tables/settings";
-import { getHeaders } from "@/libs/endorserServer";
+import { accessToken } from "@/libs/crypto";
+import { base64ToBlob, SHARED_PHOTO_BASE64_KEY } from "@/libs/util";
 
 @Component({ components: { PhotoDialog, QuickNav } })
 export default class SharedPhotoView extends Vue {
@@ -86,16 +87,19 @@ export default class SharedPhotoView extends Vue {
       const settings = await db.settings.get(MASTER_SETTINGS_KEY);
       this.activeDid = settings?.activeDid as string;
 
-      const temp = await db.temp.get("shared-photo");
+      const temp = await db.temp.get(SHARED_PHOTO_BASE64_KEY);
+      const imageB64 = temp?.blobB64 as string;
       if (temp) {
-        this.imageBlob = temp.blob;
+        this.imageBlob = base64ToBlob(imageB64);
 
         // clear the temp image
-        db.temp.delete("shared-photo");
+        db.temp.delete(SHARED_PHOTO_BASE64_KEY);
 
         this.imageFileName = (this.$route as Router).query[
           "fileName"
         ] as string;
+      } else {
+        console.error("No appropriate image found in temp storage.", temp);
       }
     } catch (err: unknown) {
       console.error("Got an error loading an identifier:", err);
@@ -156,7 +160,11 @@ export default class SharedPhotoView extends Vue {
     let result;
     try {
       // send the image to the server
-      const headers = await getHeaders(this.activeDid);
+      const token = await accessToken(this.activeDid);
+      const headers = {
+        Authorization: "Bearer " + token,
+        // axios fills in Content-Type of multipart/form-data
+      };
       const formData = new FormData();
       formData.append(
         "image",

src/views/TestView.vue

@@ -157,7 +157,7 @@
     <div class="mt-8">
       <h2 class="text-xl font-bold mb-4">Image Sharing</h2>
       Populates the "shared-photo" view as if they used "share_target".
-      <input type="file" @change="uploadFile" />
+      <input type="file" data-testid="fileInput" @change="uploadFile" />
       <router-link
         v-if="showFileNextStep()"
         :to="{
@@ -165,6 +165,7 @@
           query: { fileName },
         }"
         class="block w-full text-center text-md bg-gradient-to-b from-slate-400 to-slate-700 shadow-[inset_0_-1px_0_0_rgba(0,0,0,0.5)] text-white px-1.5 py-2 rounded-md mb-2 mt-2"
+        data-testid="fileUploadButton"
       >
         Go to Shared Page
       </router-link>
@@ -257,8 +258,10 @@ import {
 } from "@/libs/crypto/vc/passkeyDidPeer";
 import {
   AccountKeyInfo,
+  blobToBase64,
   getAccount,
   registerAndSavePasskey,
+  SHARED_PHOTO_BASE64_KEY,
 } from "@/libs/util";
 
 const inputFileNameRef = ref<Blob>();
@@ -320,12 +323,13 @@ export default class Help extends Vue {
           const blob = new Blob([new Uint8Array(data)], {
             type: file.type,
           });
+          const blobB64 = await blobToBase64(blob);
           this.fileName = file.name as string;
-          const temp = await db.temp.get("shared-photo");
+          const temp = await db.temp.get(SHARED_PHOTO_BASE64_KEY);
           if (temp) {
-            await db.temp.update("shared-photo", { blob });
+            await db.temp.update(SHARED_PHOTO_BASE64_KEY, { blobB64 });
           } else {
-            await db.temp.add({ id: "shared-photo", blob });
+            await db.temp.add({ id: SHARED_PHOTO_BASE64_KEY, blobB64 });
           }
         }
       };