add coinbase tag column to stratum table

frontend/src/app/components/stratum/stratum-list/stratum-list.component.html

@@ -9,6 +9,7 @@
         <tr>
           <td class="height">Height</td>
           <td class="reward">Reward</td>
+          <td class="tag">Coinbase Tag</td>
           <td class="merkle" [attr.colspan]="rows[0]?.merkleCells?.length || 4">
             Merkle Branches
           </td>
@@ -24,6 +25,9 @@
             <td class="reward">
               <app-amount [satoshis]="row.job.reward"></app-amount>
             </td>
+            <td class="tag">
+              {{ row.job.tag }}
+            </td>
             @for (cell of row.merkleCells; track $index) {
               <td class="merkle" [style.background-color]="cell.hash ? '#' + cell.hash.slice(0, 6) : ''">
                 <div class="pipe-segment" [class]="pipeToClass(cell.type)"></div>

frontend/src/app/components/stratum/stratum-list/stratum-list.component.scss

@@ -6,9 +6,16 @@ td {
   position: relative;
   height: 2em;
 
-  &.height, &.reward {
+  &.height, &.reward, &.tag {
     padding: 0 5px;
   }
+
+  &.tag {
+    max-width: 180px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
   
   &.pool {
     padding-left: 5px;

frontend/src/app/components/stratum/stratum-list/stratum-list.component.ts

@@ -8,10 +8,14 @@ import { SinglePoolStats } from '../../../interfaces/node-api.interface';
 
 type MerkleCellType = ' ' | '┬' | '├' | '└' | '│' | '─' | 'leaf';
 
+interface TaggedStratumJob extends StratumJob {
+  tag: string;
+}
+
 interface MerkleCell {
   hash: string;
   type: MerkleCellType;
-  job?: StratumJob;
+  job?: TaggedStratumJob;
 }
 
 interface MerkleTree {
@@ -22,10 +26,25 @@ interface MerkleTree {
 }
 
 interface PoolRow {
-  job: StratumJob;
+  job: TaggedStratumJob;
   merkleCells: MerkleCell[];
 }
 
+function parseTag(scriptSig: string): string {
+  const hex = scriptSig.slice(8).replace(/6d6d.{64}/, '');
+  const bytes: number[] = [];
+  for (let i = 0; i < hex.length; i += 2) {
+    bytes.push(parseInt(hex.substr(i, 2), 16));
+  }
+  const ascii = new TextDecoder('utf8').decode(Uint8Array.from(bytes)).replace(/\uFFFD/g, '').replace(/\\0/g, '');
+  if (ascii.includes('/ViaBTC/')) {
+    return '/ViaBTC/';
+  } else if (ascii.includes('SpiderPool/')) {
+    return 'SpiderPool/';
+  }
+  return ascii.match(/\/.*\//)?.[0] || ascii;
+}
+
 @Component({
   selector: 'app-stratum-list',
   templateUrl: './stratum-list.component.html',
@@ -60,7 +79,11 @@ export class StratumList implements OnInit, OnDestroy {
     this.websocketService.startTrackStratum('all');
   }
 
-  processJobs(jobs: Record<string, StratumJob>): PoolRow[] {
+  processJobs(rawJobs: Record<string, StratumJob>): PoolRow[] {
+    const jobs: Record<string, TaggedStratumJob> = {};
+    for (const [id, job] of Object.entries(rawJobs)) {
+      jobs[id] = { ...job, tag: parseTag(job.scriptsig) };
+    }
     if (Object.keys(jobs).length === 0) {
       return [];
     }