Added ability to backup remote DB

Added ability to restore DB

src/app/dialogs/restore-db-dialog/restore-db-dialog.component.html

@@ -0,0 +1,29 @@
+<h4 mat-dialog-title><ng-container i18n="Restore DB from backup">Restore DB from backup</ng-container></h4>
+
+<mat-dialog-content>
+    <mat-selection-list [multiple]="false" [(ngModel)]="selected_backup">
+        <mat-list-option *ngFor="let db_backup of db_backups" [value]="db_backup.name" [matTooltip]="db_backup.name">
+            <div class="container-fluid">
+                <div class="row">
+                    <div class="col-4">
+                        {{db_backup.timestamp*1000 | date: 'short'}}
+                    </div>
+                    <div class="col-4">
+                        {{(db_backup.size/1000).toFixed(2)}} kB
+                    </div>
+                    <div class="col-4" style="text-transform: capitalize;">
+                        {{db_backup.source}}
+                    </div>
+                </div>
+            </div>
+        </mat-list-option>
+    </mat-selection-list>
+</mat-dialog-content>
+
+<mat-dialog-actions>
+    <button mat-button mat-dialog-close><ng-container i18n="Restore DB cancel button">Cancel</ng-container></button>
+    <button mat-button [disabled]="restoring" (click)="restoreClicked()" [disabled]="!selected_backup || selected_backup.length !== 1"><ng-container i18n="Restore button">Restore</ng-container></button>
+    <div class="mat-spinner" *ngIf="restoring">
+      <mat-spinner [diameter]="25"></mat-spinner>
+    </div>
+</mat-dialog-actions>

src/app/dialogs/restore-db-dialog/restore-db-dialog.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { RestoreDbDialogComponent } from './restore-db-dialog.component';
+
+describe('RestoreDbDialogComponent', () => {
+  let component: RestoreDbDialogComponent;
+  let fixture: ComponentFixture<RestoreDbDialogComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ RestoreDbDialogComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(RestoreDbDialogComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/dialogs/restore-db-dialog/restore-db-dialog.component.ts

@@ -0,0 +1,47 @@
+import { Component, Inject, OnInit } from '@angular/core';
+import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material/dialog';
+import { PostsService } from 'app/posts.services';
+
+@Component({
+  selector: 'app-restore-db-dialog',
+  templateUrl: './restore-db-dialog.component.html',
+  styleUrls: ['./restore-db-dialog.component.scss']
+})
+export class RestoreDbDialogComponent implements OnInit {
+
+  db_backups = [];
+  selected_backup = null;
+  restoring = false;
+
+  constructor(@Inject(MAT_DIALOG_DATA) public data: any, private dialogRef: MatDialogRef<RestoreDbDialogComponent>, private postsService: PostsService) {
+    if (this.data?.db_backups) {
+      this.db_backups = this.data.db_backups;
+    }
+
+    this.getDBBackups();
+  }
+
+  ngOnInit(): void {
+  }
+
+  getDBBackups(): void {
+    this.postsService.getDBBackups().subscribe(res => {
+      this.db_backups = res['db_backups'];
+    });
+  }
+
+  restoreClicked(): void {
+    if (this.selected_backup.length !== 1) return;
+    this.postsService.restoreDBBackup(this.selected_backup[0]).subscribe(res => {
+      if (res['success']) {
+        this.postsService.openSnackBar('Database successfully restored!');
+      } else {
+        this.postsService.openSnackBar('Failed to restore database! See logs for more info.');
+      }
+    }, err => {
+      this.postsService.openSnackBar('Failed to restore database! See browser console for more info.');
+      console.error(err);
+    });
+  }
+
+}