beginning external file download

3 files changed, 42 insertions, 2 deletions

diff --git a/src/client/util/Import & Export/ImageUtils.ts b/src/client/util/Import & Export/ImageUtils.ts
index 33ca55aa9..bf482aea8 100644
--- a/src/client/util/Import & Export/ImageUtils.ts
+++ b/src/client/util/Import & Export/ImageUtils.ts
@@ -1,9 +1,11 @@
-import { Doc } from "../../../new_fields/Doc";
+import { Doc, DocListCast, DocListCastAsync, Opt } from "../../../new_fields/Doc";
 import { ImageField } from "../../../new_fields/URLField";
-import { Cast } from "../../../new_fields/Types";
+import { Cast, StrCast } from "../../../new_fields/Types";
 import { RouteStore } from "../../../server/RouteStore";
 import { Docs } from "../../documents/Documents";
 import { Identified } from "../../Network";
+import { Id } from "../../../new_fields/FieldSymbols";
+import { Utils } from "../../../Utils";
 
 export namespace ImageUtils {
 
@@ -19,4 +21,31 @@ export namespace ImageUtils {
         return data !== undefined;
     };
 
+    export type Hierarchy = { [id: string]: string | Hierarchy };
+
+    export const ExportHierarchyToFileSystem = async (doc: Doc): Promise<void> => {
+        const hierarchy: Hierarchy = {};
+        await HierarchyTraverserRecursive(doc, hierarchy);
+        const a = document.createElement("a");
+        a.href = Utils.prepend(`${RouteStore.imageHierarchyExport}/${JSON.stringify(hierarchy)}`);
+        a.download = `Full Export of ${StrCast(doc.title)}`;
+        a.click();
+    };
+
+    const HierarchyTraverserRecursive = async (collection: Doc, hierarchy: Hierarchy) => {
+        const children = await DocListCastAsync(collection.data);
+        if (children) {
+            const local: Hierarchy = {};
+            hierarchy[collection[Id]] = local;
+            for (const child of children) {
+                let imageData: Opt<ImageField>;
+                if (imageData = Cast(child.data, ImageField)) {
+                    local[child[Id]] = imageData.url.href;
+                } else {
+                    await HierarchyTraverserRecursive(child, local);
+                }
+            }
+        }
+    };
+
 }
\ No newline at end of file
diff --git a/src/server/RouteStore.ts b/src/server/RouteStore.ts
index 1e1dd6300..8a9a6baae 100644
--- a/src/server/RouteStore.ts
+++ b/src/server/RouteStore.ts
@@ -14,6 +14,7 @@ export enum RouteStore {
     dataUriToImage = "/uploadURI",
     images = "/images",
     inspectImage = "/inspectImage",
+    imageHierarchyExport = "/imageHierarchyExport",
 
     // USER AND WORKSPACES
     getCurrUser = "/getCurrentUser",
diff --git a/src/server/index.ts b/src/server/index.ts
index 1ca5d6e11..f9ca3de56 100644
--- a/src/server/index.ts
+++ b/src/server/index.ts
@@ -320,6 +320,16 @@ app.get("/serializeDoc/:docId", async (req, res) => {
     res.send({ docs, files: Array.from(files) });
 });
 
+app.get(`${RouteStore.imageHierarchyExport}/:hierarchy`, async (req, res) => {
+    const hierarchy = JSON.parse(req.params.hierarchy);
+    Object.keys(hierarchy).map(key => {
+        let value: any;
+        if (value = hierarchy[key]) {
+
+        }
+    });
+});
+
 app.get("/downloadId/:docId", async (req, res) => {
     res.set('Content-disposition', `attachment;`);
     res.set('Content-Type', "application/zip");