<div class="row">
            <div class="col-12">
                <form [formGroup]="ipRangeForm">
                    <div formArrayName="ipRanges">
                        <div *ngFor="let ranges of ipRangeForms.controls; let i=index" [formGroupName]="i">

                            <div class="row mb-lg">
                                <div class="col-6">
                                    <mat-card>
                                        <div class="row">
                                            <div class="col-5">

                                                <mat-form-field style="width: 100%;">
                                                    <label>
                                                        <input matInput placeholder="{{ getTranslateKey('startRange.label') | translate }}" value="" formControlName="startingRange">
                                                    </label>
                                                    <mat-error *ngIf="ranges.get('startRange').invalid">
                                                        <p>IP address is not valid.</p>
                                                    </mat-error>
                                                </mat-form-field>

                                            </div>
                                            <div class="col-5">

                                                <mat-form-field style="width: 100%;">
                                                    <label>
                                                        <input matInput placeholder="{{ getTranslateKey('endRange.label') | translate }}" value="" formControlName="endingRange">
                                                    </label>
                                                    <mat-error *ngIf="ranges.get('endRange').invalid">
                                                        <p>IP address is not valid.</p>
                                                    </mat-error>
                                                </mat-form-field>

                                            </div>
                                            <div class="col-2 remove-column">
                                                <button swui-core-button (click)="deleteRange(i)" class="mr-sm pd-zero"
                                                        color="secondary" buttonStyle="link">
                                                    {{ getTranslateKey('remove') | translate }}
                                                </button>
                                            </div>
                                        </div>
                                    </mat-card>
                                </div>
                            </div>


                        </div>
                    </div>
                </form>
            </div>
        </div>

export class SettingsComponent extends AbstractPageComponent implements OnInit {

    ipRestrictionEnabled: boolean;
    ipRangeForm: FormGroup;

    constructor(
        baseService: PageService, private formBuilder: FormBuilder, private settingsService: SettingsService
    ) {
        super(baseService);
    }

    ngOnInit() {
        // this.ipRestrictionEnabled = false;
        this.ipRangeForm = this.formBuilder.group(
            {
                ipRanges: this.formBuilder.array([])
            }
        );

        const stream = this.settingsService.getSettings();

        stream.subscribe(val => {
            this.ipRestrictionEnabled = val.ipRestrictionEnabled;
            for (const i of val.ipRanges) {
                console.log(i.startRange, i.endRange);
                this.addSpecifiedRange(i.startRange, i.endRange);
            }
        });
    }

    toggleIpRestriction(): void {
        this.ipRestrictionEnabled = !this.ipRestrictionEnabled;
    }

    get ipRangeForms() {
        return this.ipRangeForm.get('ipRanges') as FormArray;
    }

    addRange() {
        const ipRange = this.formBuilder.group({
            startingRange: ['',
                [
                    Validators.required,
                    // tslint:disable-next-line:max-line-length
                    Validators.pattern('^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$')
                ]
            ],
            endingRange: ['',
                [
                    Validators.required,
                    // tslint:disable-next-line:max-line-length
                    Validators.pattern('^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$')
                ]
            ]
        });

        this.ipRangeForms.push(ipRange);
    }

    addSpecifiedRange(startRange: string, endRange: string) {
        const ipRange = this.formBuilder.group({
            startingRange: [startRange,
                [
                    Validators.required,
                    // tslint:disable-next-line:max-line-length
                    Validators.pattern('^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$')
                ]
            ],
            endingRange: [endRange,
                [
                    Validators.required,
                    // tslint:disable-next-line:max-line-length
                    Validators.pattern('^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$')
                ]
            ]
        });

        this.ipRangeForms.push(ipRange);
    }


    deleteRange(index) {
        this.ipRangeForms.removeAt(index);
    }

    submitIpRanges() {
        console.log(this.ipRangeForms.getRawValue());
    }

}