Share cai-injected photo instead of sharable copy

src/app/shared/dia-backend/asset/dia-backend-asset-repository.service.ts

@@ -302,6 +302,7 @@ export interface DiaBackendAsset extends Tuple {
   readonly creator_name: string;
   readonly supporting_file: string | null;
   readonly source_type: 'original' | 'post_capture' | 'store';
+  readonly cai_file: string;
 }
 
 export type AssetDownloadField =

src/app/shared/share/share.service.ts

@@ -1,3 +1,4 @@
+import { HttpClient } from '@angular/common/http';
 import { Injectable } from '@angular/core';
 import { Plugins } from '@capacitor/core';
 import { concatMap, first, map } from 'rxjs/operators';
@@ -18,11 +19,12 @@ export class ShareService {
 
   constructor(
     private readonly diaBackendAssetRepository: DiaBackendAssetRepository,
-    private readonly mediaStore: MediaStore
+    private readonly mediaStore: MediaStore,
+    private readonly httpClient: HttpClient
   ) {}
 
   async share(asset: DiaBackendAsset) {
-    const dataUri = await this.getSharableCopy(asset);
+    const dataUri = await this.getCaiFile(asset);
     const fileUrl = await this.createFileUrl(dataUri);
     return Share.share({
       text: this.defaultShareText,
@@ -36,11 +38,15 @@ export class ShareService {
     return this.mediaStore.getUri(index);
   }
 
-  private async getSharableCopy(asset: DiaBackendAsset) {
+  private async getCaiFile(asset: DiaBackendAsset) {
     return this.diaBackendAssetRepository
-      .downloadFile$({ id: asset.id, field: 'sharable_copy' })
+      .fetchById$(asset.id)
       .pipe(
         first(),
+        map(diaBackendAsset => diaBackendAsset.cai_file),
+        concatMap(cai_file =>
+          this.httpClient.get(cai_file, { responseType: 'blob' })
+        ),
         concatMap(blobToBase64),
         map(imageBase64 => `data:image/jpeg;base64,${imageBase64}`)
       )