From e155ad0afa953fe59e6e9878ab152227b4116790 Mon Sep 17 00:00:00 2001
From: valorant-dhruv <78591597+valorant-dhruv@users.noreply.github.com>
Date: Wed, 14 Feb 2024 00:26:58 +0530
Subject: [PATCH] metaDownload code update

---
 packages/connect/src/connect-s3.ts | 124 ++++++++++++++++++-----------
 1 file changed, 77 insertions(+), 47 deletions(-)

diff --git a/packages/connect/src/connect-s3.ts b/packages/connect/src/connect-s3.ts
index 62113b32..482c88ac 100644
--- a/packages/connect/src/connect-s3.ts
+++ b/packages/connect/src/connect-s3.ts
@@ -1,55 +1,80 @@
-import { DownloadMetaFnParams, DownloadDataFnParams, UploadMetaFnParams, UploadDataFnParams } from './types'
-import { Connection } from './connection'
-import fetch from 'cross-fetch'
-import { Base64 } from 'js-base64'
+import {
+  DownloadMetaFnParams,
+  DownloadDataFnParams,
+  UploadMetaFnParams,
+  UploadDataFnParams,
+} from "./types";
+import { Connection } from "./connection";
+import fetch from "cross-fetch";
+import { Base64 } from "js-base64";
 
 export class ConnectS3 extends Connection {
-  uploadUrl: URL
-  downloadUrl: URL
+  uploadUrl: URL;
+  downloadUrl: URL;
 
   constructor(upload: string, download: string) {
-    super()
-    this.uploadUrl = new URL(upload)
-    this.downloadUrl = new URL(download)
+    super();
+    this.uploadUrl = new URL(upload);
+    this.downloadUrl = new URL(download);
   }
 
   async dataUpload(bytes: Uint8Array, params: UploadDataFnParams) {
     // console.log('s3 dataUpload', params.car.toString())
-    const fetchUploadUrl = new URL(`?${new URLSearchParams({ cache: Math.random().toString(), ...params }).toString()}`, this.uploadUrl)
-    const response = await fetch(fetchUploadUrl)
+    const fetchUploadUrl = new URL(
+      `?${new URLSearchParams({ cache: Math.random().toString(), ...params }).toString()}`,
+      this.uploadUrl
+    );
+    const response = await fetch(fetchUploadUrl);
     if (!response.ok) {
       // console.log('failed to get upload url for data', params, response)
-      throw new Error('failed to get upload url for data ' + new Date().toISOString() + ' ' + response.statusText)
+      throw new Error(
+        "failed to get upload url for data " +
+          new Date().toISOString() +
+          " " +
+          response.statusText
+      );
     }
-    const { uploadURL } = await response.json() as { uploadURL: string }
-    const done = await fetch(uploadURL, { method: 'PUT', body: bytes })
+    const { uploadURL } = (await response.json()) as { uploadURL: string };
+    const done = await fetch(uploadURL, { method: "PUT", body: bytes });
     // console.log('s3 dataUpload done', params.car.toString(), done)
-    if (!done.ok) throw new Error('failed to upload data ' + done.statusText)
+    if (!done.ok) throw new Error("failed to upload data " + done.statusText);
   }
 
   async metaUpload(bytes: Uint8Array, params: UploadMetaFnParams) {
-    const event = await this.createEventBlock(bytes)
-    const base64String = Base64.fromUint8Array(bytes)
+    const event = await this.createEventBlock(bytes);
+    const base64String = Base64.fromUint8Array(bytes);
     const crdtEntry = {
       cid: event.cid.toString(),
       data: base64String,
-      parents: this.parents.map(p => p.toString())
-    }
-    const fetchUploadUrl = new URL(`?${new URLSearchParams({ type: 'meta', ...params }).toString()}`, this.uploadUrl)
-    const done = await fetch(fetchUploadUrl, { method: 'PUT', body: JSON.stringify(crdtEntry) })
-    const result=await done.json();
-    if (result.status!=201) throw new Error('failed to upload data ' + JSON.parse(result.body).message)
-    this.parents = [event.cid]
-    return null
+      parents: this.parents.map((p) => p.toString()),
+    };
+    const fetchUploadUrl = new URL(
+      `?${new URLSearchParams({ type: "meta", ...params }).toString()}`,
+      this.uploadUrl
+    );
+    const done = await fetch(fetchUploadUrl, {
+      method: "PUT",
+      body: JSON.stringify(crdtEntry),
+    });
+    const result = await done.json();
+    if (result.status != 201)
+      throw new Error(
+        "failed to upload data " + JSON.parse(result.body).message
+      );
+    this.parents = [event.cid];
+    return null;
   }
 
   async dataDownload(params: DownloadDataFnParams) {
-    const { type, name, car } = params
-    const fetchFromUrl = new URL(`${type}/${name}/${car}.car`, this.downloadUrl)
-    const response = await fetch(fetchFromUrl)
-    if (!response.ok) return null // throw new Error('failed to download data ' + response.statusText)
-    const bytes = new Uint8Array(await response.arrayBuffer())
-    return bytes
+    const { type, name, car } = params;
+    const fetchFromUrl = new URL(
+      `${type}/${name}/${car}.car`,
+      this.downloadUrl
+    );
+    const response = await fetch(fetchFromUrl);
+    if (!response.ok) return null; // throw new Error('failed to download data ' + response.statusText)
+    const bytes = new Uint8Array(await response.arrayBuffer());
+    return bytes;
   }
 
   /**
@@ -91,21 +116,26 @@ export class ConnectS3 extends Connection {
    * @returns - Returns the metadata bytes as a Uint8Array or null if the fetch is unsuccessful.
    */
   async metaDownload(params: DownloadMetaFnParams) {
-    const { name, branch } = params
-    const fetchUploadUrl = new URL(`?${new URLSearchParams({ type: 'meta', ...params }).toString()}`, this.uploadUrl)
-    const data=await fetch(fetchUploadUrl)
-    let response=await data.json();
-    if(response.status!=200) throw new Error("Failed to download data");
-    response=JSON.parse(response.body).items
-    console.log("This is the response",response)
-    const events=await Promise.all(
-    response.map(async (element: any)=>
-    {
-      const base64String = element.data
-      const bytes = Base64.toUint8Array(base64String)
-      return {cid: element.cid, bytes}
-    })
-    )
-    return events.map(e => e.bytes)
+    const { name, branch } = params;
+    const fetchUploadUrl = new URL(
+      `?${new URLSearchParams({ type: "meta", ...params }).toString()}`,
+      this.uploadUrl
+    );
+    const data = await fetch(fetchUploadUrl);
+    let response = await data.json();
+    if (response.status != 200) throw new Error("Failed to download data");
+    response = JSON.parse(response.body).items;
+    console.log("This is the response", response);
+    const events = await Promise.all(
+      response.map(async (element: any) => {
+        const base64String = element.data;
+        const bytes = Base64.toUint8Array(base64String);
+        return { cid: element.cid, bytes };
+      })
+    );
+    const cids = events.map(e => e.cid)
+    const uniqueParentsMap = new Map([...this.parents, ...cids].map(p => [p.toString(), p]))
+    this.parents = Array.from(uniqueParentsMap.values())
+    return events.map((e) => e.bytes);
   }
 }