feat: support concurrent chunk uploads

package.json

@@ -2,7 +2,7 @@
   "name": "@appwrite.io/console",
   "homepage": "https://appwrite.io/support",
   "description": "Appwrite is an open-source self-hosted backend server that abstracts and simplifies complex and repetitive development tasks behind a very simple REST API",
-  "version": "13.0.0",
+  "version": "13.1.0",
   "license": "BSD-3-Clause",
   "main": "dist/cjs/sdk.js",
   "exports": {

src/client.ts

@@ -390,8 +390,8 @@ class Client {
         'x-sdk-name': 'Console',
         'x-sdk-platform': 'console',
         'x-sdk-language': 'web',
-        'x-sdk-version': '13.0.0',
-        'X-Appwrite-Response-Format': '1.9.4',
+        'x-sdk-version': '13.1.0',
+        'X-Appwrite-Response-Format': '1.9.5',
     };
 
     /**
@@ -978,44 +978,119 @@ class Client {
             return await this.call(method, url, headers, originalPayload);
         }
 
-        let start = 0;
-        let response = null;
+        const totalChunks = Math.ceil(file.size / Client.CHUNK_SIZE);
+
+        // Upload first chunk alone to get the upload ID
+        const firstChunkEnd = Math.min(Client.CHUNK_SIZE, file.size);
+        const firstChunkHeaders = { ...headers, 'content-range': `bytes 0-${firstChunkEnd - 1}/${file.size}` };
+        const firstChunk = file.slice(0, firstChunkEnd);
+        const firstPayload = { ...originalPayload };
+        firstPayload[fileParam] = new File([firstChunk], file.name);
+
+        let response = await this.call(method, url, firstChunkHeaders, firstPayload);
+        const uploadId = response?.$id;
+
+        if (onProgress && typeof onProgress === 'function') {
+            onProgress({
+                $id: uploadId,
+                progress: Math.round((firstChunkEnd / file.size) * 100),
+                sizeUploaded: firstChunkEnd,
+                chunksTotal: totalChunks,
+                chunksUploaded: 1
+            });
+        }
 
-        while (start < file.size) {
-            let end = start + Client.CHUNK_SIZE; // Prepare end for the next chunk
-            if (end >= file.size) {
-                end = file.size; // Adjust for the last chunk to include the last byte
-            }
+        if (totalChunks === 1) {
+            return response;
+        }
 
-            headers['content-range'] = `bytes ${start}-${end-1}/${file.size}`;
-            const chunk = file.slice(start, end);
+        // Prepare remaining chunks
+        const chunks: { start: number; end: number }[] = [];
+        for (let i = 1; i < totalChunks; i++) {
+            const start = i * Client.CHUNK_SIZE;
+            const end = Math.min(start + Client.CHUNK_SIZE, file.size);
+            chunks.push({ start, end });
+        }
 
-            let payload = { ...originalPayload };
-            payload[fileParam] = new File([chunk], file.name);
+        // Upload remaining chunks with max concurrency of 8
+        const CONCURRENCY = 8;
+        let completedCount = 1;
+        let uploadedBytes = firstChunkEnd;
+        let lastResponse = response;
+        let finalResponse = null;
+
+        const isUploadComplete = (chunkResponse: any) => {
+            const chunksUploaded = chunkResponse?.chunksUploaded;
+            const chunksTotal = chunkResponse?.chunksTotal ?? totalChunks;
+            return typeof chunksUploaded === 'number' && typeof chunksTotal === 'number' && chunksUploaded >= chunksTotal;
+        };
 
-            response = await this.call(method, url, headers, payload);
+        const uploadChunk = async (chunk: typeof chunks[0]) => {
+            const chunkHeaders = { ...headers };
+            if (uploadId) {
+                chunkHeaders['x-appwrite-id'] = uploadId;
+            }
+            chunkHeaders['content-range'] = `bytes ${chunk.start}-${chunk.end - 1}/${file.size}`;
+
+            const chunkBlob = file.slice(chunk.start, chunk.end);
+            const chunkPayload = { ...originalPayload };
+            chunkPayload[fileParam] = new File([chunkBlob], file.name);
+
+            const chunkResponse = await this.call(method, url, chunkHeaders, chunkPayload);
+
+            completedCount++;
+            uploadedBytes += (chunk.end - chunk.start);
+
+            lastResponse = chunkResponse;
+            if (isUploadComplete(chunkResponse)) {
+                finalResponse = chunkResponse;
+            }
 
             if (onProgress && typeof onProgress === 'function') {
                 onProgress({
-                    $id: response.$id,
-                    progress: Math.round((end / file.size) * 100),
-                    sizeUploaded: end,
-                    chunksTotal: Math.ceil(file.size / Client.CHUNK_SIZE),
-                    chunksUploaded: Math.ceil(end / Client.CHUNK_SIZE)
+                    $id: uploadId,
+                    progress: Math.round((uploadedBytes / file.size) * 100),
+                    sizeUploaded: uploadedBytes,
+                    chunksTotal: totalChunks,
+                    chunksUploaded: completedCount
                 });
             }
 
-            if (response && response.$id) {
-                headers['x-appwrite-id'] = response.$id;
-            }
+            return chunkResponse;
+        };
 
-            start = end;
-        }
+        await new Promise<void>((resolve, reject) => {
+            let nextChunk = 0;
+            let inFlight = 0;
+            let completed = 0;
+
+            const uploadNext = () => {
+                if (completed === chunks.length) {
+                    resolve();
+                    return;
+                }
+
+                while (inFlight < CONCURRENCY && nextChunk < chunks.length) {
+                    const chunk = chunks[nextChunk++];
+                    inFlight++;
+
+                    uploadChunk(chunk)
+                        .then(() => {
+                            inFlight--;
+                            completed++;
+                            uploadNext();
+                        })
+                        .catch(reject);
+                }
+            };
+
+            uploadNext();
+        });
 
-        return response;
+        return finalResponse ?? lastResponse;
     }
 
-    async ping(): Promise<string> {
+    async ping(): Promise<any> {
         return this.call('GET', new URL(this.config.endpoint + '/ping'));
     }