From c2a16e49bdebc3f41d7e877f0f2908efb48e747a Mon Sep 17 00:00:00 2001
From: Justin Ferrari <‘justinwesleyferrari@gmail.com’>
Date: Fri, 16 Dec 2022 12:56:51 -0500
Subject: [PATCH] Added webworker file to q-chat.src

---
 .../messaging/q-chat/computePowWorker.src.js  | 82 +++++++++++++++++++
 .../core/messaging/q-chat/q-chat.src.js       |  2 +-
 2 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 qortal-ui-plugins/plugins/core/messaging/q-chat/computePowWorker.src.js

diff --git a/qortal-ui-plugins/plugins/core/messaging/q-chat/computePowWorker.src.js b/qortal-ui-plugins/plugins/core/messaging/q-chat/computePowWorker.src.js
new file mode 100644
index 00000000..2ed60a20
--- /dev/null
+++ b/qortal-ui-plugins/plugins/core/messaging/q-chat/computePowWorker.src.js
@@ -0,0 +1,82 @@
+import { Sha256 } from 'asmcrypto.js'
+
+
+function sbrk(size, heap){
+  let brk = 512 * 1024 // stack top
+  let old = brk
+  brk += size
+
+  if (brk > heap.length)
+    throw new Error('heap exhausted')
+
+  return old
+}
+
+
+
+self.addEventListener('message', async e => {
+ const response = await computePow(e.data.chatBytes, e.data.path, e.data.difficulty)
+ postMessage(response)
+
+})
+
+
+const memory = new WebAssembly.Memory({ initial: 256, maximum: 256 })
+const heap = new Uint8Array(memory.buffer)
+
+
+
+const computePow = async (chatBytes, path, difficulty) => {
+
+  let response = null
+
+ await new Promise((resolve, reject)=> {
+
+  const _chatBytesArray = Object.keys(chatBytes).map(function (key) { return chatBytes[key]; });
+  const chatBytesArray = new Uint8Array(_chatBytesArray);
+  const chatBytesHash = new Sha256().process(chatBytesArray).finish().result;
+  const hashPtr = sbrk(32, heap);
+  const hashAry = new Uint8Array(memory.buffer, hashPtr, 32);
+  hashAry.set(chatBytesHash);
+
+ 
+  const workBufferLength = 8 * 1024 * 1024;
+  const workBufferPtr = sbrk(workBufferLength, heap);
+
+
+
+  const importObject = {
+      env: {
+          memory: memory
+      },
+  };
+
+  function loadWebAssembly(filename, imports) {
+    // Fetch the file and compile it
+    return fetch(filename)
+        .then(response => response.arrayBuffer())
+        .then(buffer => WebAssembly.compile(buffer))
+        .then(module => {
+
+            // Create the instance.
+            return new WebAssembly.Instance(module, importObject);
+        });
+}
+
+
+loadWebAssembly(path)
+    .then(wasmModule => {
+        response =  {
+          nonce : wasmModule.exports.compute2(hashPtr, workBufferPtr, workBufferLength, difficulty),
+          chatBytesArray
+        }
+
+         resolve()
+    
+    });
+
+
+ })  
+
+  return response
+}
\ No newline at end of file
diff --git a/qortal-ui-plugins/plugins/core/messaging/q-chat/q-chat.src.js b/qortal-ui-plugins/plugins/core/messaging/q-chat/q-chat.src.js
index b980f2ff..c44919c5 100644
--- a/qortal-ui-plugins/plugins/core/messaging/q-chat/q-chat.src.js
+++ b/qortal-ui-plugins/plugins/core/messaging/q-chat/q-chat.src.js
@@ -2,7 +2,7 @@ import { LitElement, html, css } from 'lit';
 import { render } from 'lit/html.js';
 import { Epml } from '../../../../epml.js';
 import { use, get, translate, translateUnsafeHTML, registerTranslateConfig } from 'lit-translate';
-import WebWorker from 'web-worker:./computePowWorker.js';
+import WebWorker from 'web-worker:./computePowWorker.src.js';
 
 registerTranslateConfig({
   loader: lang => fetch(`/language/${lang}.json`).then(res => res.json())