adds upload dialog and duplicates

web/src/lib/stores/upload_store.svelte.ts

@@ -0,0 +1,57 @@
+import { APIError } from "$lib/util/api_util";
+
+export type Upload = {
+    file: File;
+    status: "enqueued" | "uploading" | "cancelled" | "success" | "error" | "duplicate";
+    error?: string;
+    duplicate?: { id: string, name: string };
+    progress: number;
+    function: (f: File, ignoreDuplicates?: boolean, onProgress?: (p: number) => void) => Promise<unknown>
+};
+
+class UploadStore {
+    enqueuedUploads: Upload[] = $state([]);
+    completedUploads: Upload[] = $state([]);
+    uploading: boolean = $state(false);
+}
+
+export const uploadStore = new UploadStore();
+
+
+export async function processUploadQueue(batchSize: number = 3, ignoreDuplicates: boolean = false) {
+    if (uploadStore.uploading) {
+        return;
+    }
+    uploadStore.uploading = true;
+
+    while (uploadStore.enqueuedUploads.length > 0) {
+        const batch = uploadStore.enqueuedUploads.slice(0, batchSize);
+        const uploadPromises: Promise<unknown>[] = [];
+        for (const b of batch) {
+            b.status = "uploading";
+            uploadPromises.push(
+                b.function(b.file, ignoreDuplicates, (p: number) => {
+                    b.progress = p
+                })
+            );
+        }
+        const results = await Promise.all(
+            uploadPromises.map((p) => p.catch((e) => e)),
+        );
+        results.forEach((r, i) => {
+            const u = batch[i];
+            if (r instanceof APIError && r.message == "Duplicate trail") {
+                u.status = "duplicate"
+                u.duplicate = { id: r.detail.id, name: r.detail.name };
+            } else if (r instanceof APIError) {
+                u.status = "error"
+                u.error = r.message
+            } else {
+                u.status = "success"
+            }
+            uploadStore.completedUploads.push(u);
+        });
+        uploadStore.enqueuedUploads.splice(0, batchSize)
+    }
+    uploadStore.uploading = false;
+}