clear log implementation

Author: loukaspd

src/app/components/event-viewer/event-viewer.component.html

@@ -6,14 +6,16 @@
 
     <nz-content>
     <!-- Refersh Button -->
-    <div *ngIf="viewModel.hasNew" style="margin-left:5px; margin-bottom: 10px;">
-        <button (click)="uiOnRefreshClicked()" nz-button nzType="primary" [nzSize]="'default'" nzShape="circle">
+    <div style="margin-left:5px; margin-bottom: 10px;">
+        <button (click)="uiOnClearClicked()" nz-button nzType="primary" [nzSize]="'default'" nzShape="circle">
+            <i nz-icon nzType="delete"></i>
+        </button>
+
+        <button *ngIf="viewModel.hasNew"  (click)="uiOnRefreshClicked()" nz-button nzType="primary" [nzSize]="'default'" nzShape="circle">
             <i nz-icon nzType="issues-close"></i>
         </button>
     </div>
 
-    
-    
     <!-- Main List-->
     <nz-collapse>
         <nz-collapse-panel *ngFor="let event of viewModel.events"

src/app/components/event-viewer/event-viewer.component.ts

@@ -8,6 +8,7 @@ import { Constants } from '../../types/Constants';
 import { filter } from 'rxjs/operators';
 import { EventFiltersVm } from '../../types/viewmodels/EventFiltersVm';
 import { EventLog } from '../../types/EventLog';
+import { NzModalService } from 'ng-zorro-antd';
 //#endregion imports
 
 @Component({
@@ -16,7 +17,7 @@ import { EventLog } from '../../types/EventLog';
 })
 export class EventViewerComponent implements OnInit, OnDestroy {
     //#region Constructor & Properties
-    constructor(private psService: PowershellService) { }
+    constructor(private psService: PowershellService, private modalService: NzModalService) { }
 
     @Input()
     public eventLog: EventLog;
@@ -77,6 +78,11 @@ export class EventViewerComponent implements OnInit, OnDestroy {
         this.viewModel.hasNew = true;
         this.unreadEventsUpdated.emit(true);
     }
+
+    private _clearEvents(): void {
+        this.psService.clearEventLog(this.eventLog)
+        .then(() => this._refreshList());
+    }
     //#endregion Implementation
 
 
@@ -88,6 +94,16 @@ export class EventViewerComponent implements OnInit, OnDestroy {
     public uiOnMoreClicked(): void {
         this._showNextItems();
     }
+
+    public uiOnClearClicked(): void {
+        this.modalService.confirm({
+            nzTitle: `Clear all events from ${this.eventLog.log}?`
+            ,nzCancelText: 'Cancel'
+            ,nzOkText: 'Yes'
+            ,nzOkType: 'danger'
+            ,nzOnOk: () => this._clearEvents()
+        });
+    }
     //#endregion UiCallbacks
 }
 

src/app/services/powershell/powershell-command-executor.ts

@@ -1,5 +1,4 @@
 import Shell from 'node-powershell';
-import { GlobalUtils } from '../global-utils';
 
 export class PsCommandExecutor {    
     private static _ps: Shell;
@@ -19,7 +18,7 @@ export class PsCommandExecutor {
         return this._ps.addCommand(command)
         .then(() => this._ps.invoke())
         .catch(e => {
-            console.log(e);
+            console.error(e);
             this._initShell();
             return '';
         });

src/app/services/powershell/powershell-commands.ts

@@ -5,10 +5,17 @@ import { PsCommandExecutor } from "./powershell-command-executor";
 
 export class PowershellCommands {
 
+    static clearEventLog(eventLog: EventLog): Promise<string> {
+        let command = `Clear-EventLog -LogName "${eventLog.log}"`;
+        if (eventLog.computerName) command += ` -ComputerName "${eventLog.computerName}"`;
+        
+        return PsCommandExecutor.executeCommand(command);
+    }
+
     //#region Event Log
     public static getEventLogs(computerName: string): Promise<EventLog[]> {
         let command = 'Get-EventLog';
-        if (computerName) command += ` -ComputerName ${computerName}`;
+        if (computerName) command += ` -ComputerName "${computerName}"`;
         command += ' -List';
 
         return PsCommandExecutor.executeCommand(command)
@@ -44,7 +51,7 @@ export class PowershellCommands {
         let command = `Get-EventLog -LogName "${eventLog.log}"`;
         if (eventLog.computerName) command += ` -ComputerName "${eventLog.computerName}"`;
         if (after) command += ` -After "${after}"`;
-        if (newest) command += ` -Newest "${newest}"`;
+        if (newest) command += ` -Newest ${newest}`;
 
         command += ' ' + PowershellCommands.selectEvent;
         return PsCommandExecutor.executeCommand(command)

src/app/services/powershell/powershell.service.ts

@@ -26,5 +26,9 @@ export class PowershellService {
     public onNewEvents$(eventLog: EventLog, filters:EventFiltersVm): Observable<Event[]> {
         return new PowershellMonitor(eventLog, filters).observable$;
     }
+
+    public clearEventLog(eventLog: EventLog): Promise<string> {
+        return PowershellCommands.clearEventLog(eventLog);
+    }
     //#endregion Public Api
 }