lnd: Open channel model block if min fee is higher

src/app/lnd/peers-channels/channels/open-channel-modal/open-channel.component.html

@@ -27,8 +27,8 @@
               <input #amt="ngModel" matInput type="number" tabindex="1" required name="amnt" [step]="1000" [min]="1" [max]="totalBalance" [(ngModel)]="fundingAmount">
               <mat-hint>(Remaining: {{totalBalance - ((fundingAmount) ? fundingAmount : 0) | number}})</mat-hint>
               <span matSuffix> Sats </span>
-              <mat-error *ngIf="amount.errors?.required">Amount is required.</mat-error>
-              <mat-error *ngIf="amount.errors?.max">Amount must be less than or equal to {{totalBalance}}.</mat-error>
+              <mat-error *ngIf="amt.errors?.required">Amount is required.</mat-error>
+              <mat-error *ngIf="amt.errors?.max">Amount must be less than or equal to {{totalBalance}}.</mat-error>
             </mat-form-field>
             <div fxFlex="35" fxLayoutAlign="start center">
               <mat-slide-toggle tabindex="2" color="primary" name="isPrivate" [(ngModel)]="isPrivate">Private Channel</mat-slide-toggle>
@@ -43,7 +43,7 @@
             <div fxLayout="column" fxFlex="100" fxLayoutAlign="start stretch">
               <div fxLayout="row" fxFlex="100" fxLayoutAlign="space-between center">
                 <mat-form-field fxLayout="column" fxFlex="49">
-                  <mat-select tabindex="3" [(value)]="selTransType">
+                  <mat-select tabindex="3" [(value)]="selTransType" (selectionChange)="onSelTransTypeChanged($event)">
                     <mat-option *ngFor="let transType of transTypes" [value]="transType.id">
                       {{transType.name}}
                     </mat-option>
@@ -51,11 +51,14 @@
                 </mat-form-field>
                 <mat-form-field fxLayout="column" fxFlex="49">
                   <mat-label>{{selTransType==='0' ? 'Default' : selTransType==='1' ? 'Target Confirmation Blocks' : 'Fee (Sats/vByte)'}}</mat-label>
-                  <input #transTypeVal="ngModel" matInput type="number" tabindex="4" name="transTpValue" [required]="selTransType!=='0'" [disabled]="selTransType==='0'" [step]="1" [min]="0" [(ngModel)]="transTypeValue">
-                  <mat-error *ngIf="selTransType!=='0' && !transTypeValue">{{selTransType === '1' ? 'Target Confirmation Blocks' : 'Fee'}} is required.</mat-error>
+                  <input #transTypeVal="ngModel" matInput type="number" tabindex="4" name="transTpValue" [required]="selTransType!=='0'" [disabled]="selTransType==='0'" [step]="1" [min]="selTransType === '2' ? recommendedFee.minimumFee : 0" [(ngModel)]="transTypeValue">
+                  <mat-hint *ngIf="selTransType === '2'">Mempool Min: {{recommendedFee.minimumFee}} (Sats/vByte)</mat-hint>
+                  <mat-error *ngIf="selTransType === '1' && !transTypeValue">Target Confirmation Blocks is required.</mat-error>
+                  <mat-error *ngIf="selTransType === '2' && !transTypeValue">Fee is required.</mat-error>
+                  <mat-error *ngIf="selTransType === '2' && transTypeValue && +transTypeValue < recommendedFee.minimumFee">Lower than min feerate {{recommendedFee.minimumFee}} in the mempool.</mat-error>
                 </mat-form-field>
               </div>
-              <div fxLayout="row" fxFlex="100" fxLayoutAlign="space-between center">
+              <div fxLayout="row" fxFlex="100" fxLayoutAlign="space-between center" class="mt-2">
                 <div *ngIf="isTaprootAvailable" fxFlex="50" fxLayoutAlign="start center">
                   <mat-slide-toggle tabindex="6" color="primary" name="taprootChannel" [(ngModel)]="taprootChannel">Taproot Channel</mat-slide-toggle>
                 </div>

src/app/lnd/peers-channels/channels/open-channel-modal/open-channel.component.ts

@@ -11,11 +11,14 @@ import { Peer, GetInfo } from '../../../../shared/models/lndModels';
 import { OpenChannelAlert } from '../../../../shared/models/alertData';
 import { APICallStatusEnum, LNDActions, TRANS_TYPES } from '../../../../shared/services/consts-enums-functions';
 
+import { RecommendedFeeRates } from '../../../../shared/models/rtlModels';
 import { RTLState } from '../../../../store/rtl.state';
 import { rootSelectedNode } from '../../../../store/rtl.selector';
 import { saveNewChannel } from '../../../store/lnd.actions';
 import { Node } from '../../../../shared/models/RTLconfig';
 import { CommonService } from '../../../../shared/services/common.service';
+import { DataService } from '../../../../shared/services/data.service';
+import { LoggerService } from '../../../../shared/services/logger.service';
 
 @Component({
   selector: 'rtl-open-channel',
@@ -47,9 +50,12 @@ export class OpenChannelComponent implements OnInit, OnDestroy {
   public spendUnconfirmed = false;
   public transTypeValue = '';
   public transTypes = TRANS_TYPES;
+  public recommendedFee: RecommendedFeeRates = { fastestFee: 0, halfHourFee: 0, hourFee: 0 };
   private unSubs: Array<Subject<void>> = [new Subject(), new Subject(), new Subject(), new Subject()];
 
-  constructor(public dialogRef: MatDialogRef<OpenChannelComponent>, @Inject(MAT_DIALOG_DATA) public data: OpenChannelAlert, private store: Store<RTLState>, private actions: Actions, private commonService: CommonService) { }
+  constructor(private logger: LoggerService, public dialogRef: MatDialogRef<OpenChannelComponent>,
+    @Inject(MAT_DIALOG_DATA) public data: OpenChannelAlert, private store: Store<RTLState>,
+    private actions: Actions, private commonService: CommonService, private dataService: DataService) { }
 
   ngOnInit() {
     if (this.data.message) {
@@ -138,7 +144,12 @@ export class OpenChannelComponent implements OnInit, OnDestroy {
   }
 
   onOpenChannel(): boolean | void {
-    if ((!this.peer && !this.selectedPubkey) || (!this.fundingAmount || ((this.totalBalance - this.fundingAmount) < 0) || ((this.selTransType === '1' || this.selTransType === '2') && !this.transTypeValue))) {
+    if (
+      (!this.peer && !this.selectedPubkey) ||
+      (!this.fundingAmount ||
+      ((this.totalBalance - this.fundingAmount) < 0) || ((this.selTransType === '1' || this.selTransType === '2') && !this.transTypeValue)) ||
+      (this.selTransType === '2' && this.recommendedFee.minimumFee > +this.transTypeValue)
+    ) {
       return true;
     }
     // Taproot channel's commitment type is 5
@@ -160,6 +171,19 @@ export class OpenChannelComponent implements OnInit, OnDestroy {
     }
   }
 
+  onSelTransTypeChanged(event) {
+    this.transTypeValue = '';
+    if (event.value === this.transTypes[2].id) {
+      this.dataService.getRecommendedFeeRates().pipe(takeUntil(this.unSubs[3])).subscribe({
+        next: (rfRes: RecommendedFeeRates) => {
+          this.recommendedFee = rfRes;
+        }, error: (err) => {
+          this.logger.error(err);
+        }
+      });
+    }
+  }
+
   ngOnDestroy() {
     this.unSubs.forEach((completeSub) => {
       completeSub.next(<any>null);