Create statistics of closed list of speakers

client/src/app/core/repositories/agenda/list-of-speakers-repository.service.ts

@@ -62,6 +62,17 @@ const ListOfSpeakersNestedModelDescriptors: NestedModelDescriptors = {
     ]
 };
 
+/**
+ * An object, that contains information about structure-level,
+ * speaking-time and finished-speakers.
+ * Helpful to get a relation between speakers and their structure-level.
+ */
+export interface SpeakingTimeStructureLevelObject {
+    structureLevel: string;
+    finishedSpeakers: ViewSpeaker[];
+    speakingTime: number;
+}
+
 /**
  * Repository service for lists of speakers
  *
@@ -228,6 +239,95 @@ export class ListOfSpeakersRepositoryService extends BaseHasContentObjectReposit
         return !this.getViewModelList().some(list => list.hasSpeakerSpoken(speaker));
     }
 
+    /**
+     * List every speaker only once, who has spoken
+     *
+     * @returns A list with all different speakers.
+     */
+    public getAllFirstContributions(): ViewSpeaker[] {
+        const speakers: ViewSpeaker[] = this.getViewModelList().flatMap(
+            (los: ViewListOfSpeakers) => los.finishedSpeakers
+        );
+        const firstContributions: ViewSpeaker[] = [];
+        for (const speaker of speakers) {
+            if (!firstContributions.find(s => s.user_id === speaker.user_id)) {
+                firstContributions.push(speaker);
+            }
+        }
+        return firstContributions;
+    }
+
+    /**
+     * Maps structure-level to speaker.
+     *
+     * @returns A list, which entries are `SpeakingTimeStructureLevelObject`.
+     */
+    public getSpeakingTimeStructureLevelRelation(): SpeakingTimeStructureLevelObject[] {
+        let listSpeakingTimeStructureLevel: SpeakingTimeStructureLevelObject[] = [];
+        for (const los of this.getViewModelList()) {
+            for (const speaker of los.finishedSpeakers) {
+                const nextEntry = this.getSpeakingTimeStructureLevelObject(speaker);
+                listSpeakingTimeStructureLevel = this.getSpeakingTimeStructureLevelList(
+                    nextEntry,
+                    listSpeakingTimeStructureLevel
+                );
+            }
+        }
+        return listSpeakingTimeStructureLevel;
+    }
+
+    /**
+     * Helper-function to create a `SpeakingTimeStructureLevelObject` by a given speaker.
+     *
+     * @param speaker, with whom structure-level and speaking-time is calculated.
+     *
+     * @returns The created `SpeakingTimeStructureLevelObject`.
+     */
+    private getSpeakingTimeStructureLevelObject(speaker: ViewSpeaker): SpeakingTimeStructureLevelObject {
+        return {
+            structureLevel:
+                !speaker.user || (speaker.user && !speaker.user.structure_level)
+                    ? 'No structure level'
+                    : speaker.user.structure_level,
+            finishedSpeakers: [speaker],
+            speakingTime: this.getSpeakingTimeAsNumber(speaker)
+        };
+    }
+
+    /**
+     * Helper-function to update entries in a given list, if already existing, or create entries otherwise.
+     *
+     * @param object A `SpeakingTimeStructureLevelObject`, that contains information about speaking-time
+     * and structure-level.
+     * @param list A list, at which speaking-time, structure-level and finished_speakers are set.
+     *
+     * @returns The updated map.
+     */
+    private getSpeakingTimeStructureLevelList(
+        object: SpeakingTimeStructureLevelObject,
+        list: SpeakingTimeStructureLevelObject[]
+    ): SpeakingTimeStructureLevelObject[] {
+        const index = list.findIndex(entry => entry.structureLevel === object.structureLevel);
+        if (index >= 0) {
+            list[index].speakingTime += object.speakingTime;
+            list[index].finishedSpeakers.push(...object.finishedSpeakers);
+        } else {
+            list.push(object);
+        }
+        return list;
+    }
+
+    /**
+     * This function calculates speaking-time as number for a given speaker.
+     *
+     * @param speaker The speaker, whose speaking-time should be calculated.
+     *
+     * @returns A number, that represents the speaking-time.
+     */
+    private getSpeakingTimeAsNumber(speaker: ViewSpeaker): number {
+        return Math.floor((new Date(speaker.end_time).valueOf() - new Date(speaker.begin_time).valueOf()) / 1000);
+    }
+
     /**
      * Helper function get the url to the speaker rest address
      *

client/src/app/core/ui-services/duration.service.ts

@@ -62,6 +62,24 @@ export class DurationService {
         return time;
     }
 
+    /**
+     * Calculates a given time to a readable string, that contains hours, minutes and seconds.
+     *
+     * @param duration The time as number (in seconds).
+     *
+     * @returns A readable time-string.
+     */
+    public durationToStringWithHours(duration: number): string {
+        const hours = Math.floor(duration / 3600);
+        const minutes = `0${Math.floor((duration % 3600) / 60)}`.slice(-2);
+        const seconds = `0${Math.floor(duration % 60)}`.slice(-2);
+        if (!isNaN(+minutes) && !isNaN(+seconds)) {
+            return `${hours}:${minutes}:${seconds} h`;
+        } else {
+            return '';
+        }
+    }
+
     /**
      * Converts a duration number (given in minutes or seconds)
      *

client/src/app/shared/components/list-view-table/list-view-table.component.ts

@@ -484,7 +484,7 @@ export class ListViewTableComponent<V extends BaseViewModel | BaseViewModelWithC
     }
 
     public isElementProjected = (context: PblNgridRowContext<V>) => {
-        if (this.projectorService.isProjected(this.getProjectable(context.$implicit as V))) {
+        if (this.allowProjector && this.projectorService.isProjected(this.getProjectable(context.$implicit as V))) {
             return 'projected';
         }
     };

client/src/app/site/common/components/count-users/count-users.component.html

@@ -1,4 +1,3 @@
-<mat-card class="os-card" *osPerms="'users.can_manage'">
 <button type="button" mat-button (click)="countUsers()" *ngIf="!this.token">
     <span>{{ 'Count active users' | translate }}</span>
 </button>
@@ -22,4 +21,3 @@
         </li>
     </ul>
 </div>
-</mat-card>

client/src/app/site/common/components/legal-notice/legal-notice.component.html

@@ -34,4 +34,14 @@
     </div>
 </mat-card>
 
+<mat-card class="os-card" *osPerms="'users.can_manage'">
+    <h3>{{ 'Statistics' | translate }}</h3>
+    <div>
+        <h4>{{ 'Count active users' | translate }}</h4>
         <os-count-users></os-count-users>
+    </div>
+    <div>
+        <h4>{{ 'Count active word requests' | translate }}</h4>
+        <os-user-statistics></os-user-statistics>
+    </div>
+</mat-card>

client/src/app/site/common/components/user-statistics/user-statistics.component.html

@@ -0,0 +1,48 @@
+<button mat-button *ngIf="!openedStatistics" (click)="changeViewOfStatistics()">
+    {{ 'Count active word requests' | translate }}
+</button>
+<button mat-button *ngIf="openedStatistics" (click)="changeViewOfStatistics()">
+    {{ 'Stop counting' | translate }}
+</button>
+<ng-container *ngIf="openedStatistics">
+    <table class="user-statistics-table">
+        <tr>
+            <td>{{ 'Total number of word requests' | translate }}</td>
+            <td>{{ numberOfWordRequests }}</td>
+        </tr>
+        <tr>
+            <td>{{ 'Unique speakers' | translate }}</td>
+            <td>{{ numberOfUniqueSpeakers }}</td>
+        </tr>
+        <tr>
+            <td>{{ 'Total duration of word requests' | translate }}</td>
+            <td>{{ totalDuration }}</td>
+        </tr>
+    </table>
+    <os-list-view-table
+        [listObservable]="statisticsByStructureLevelObservable"
+        [columns]="columnDefinition"
+        [filterProps]="filterProps"
+        [vScrollFixed]="45"
+        [allowProjector]="false"
+        [fullScreen]="false"
+        [showListOfSpeakers]="false"
+        [cssClasses]="{ 'user-statistics-table--virtual-scroll': true }"
+    >
+        <!-- Header -->
+        <div *pblNgridHeaderCellDef="'*'; col as col">
+            {{ col.label | translate }}
+        </div>
+
+        <!-- Content -->
+        <div *pblNgridCellDef="'structureLevel'; row as object">
+            {{ object.structureLevel | translate }}
+        </div>
+        <div *pblNgridCellDef="'durationOfWordRequests'; row as object">
+            {{ parseDuration(object.speakingTime) }}
+        </div>
+        <div *pblNgridCellDef="'numberOfWordRequests'; row as object">
+            {{ object.finishedSpeakers.length }}
+        </div>
+    </os-list-view-table>
+</ng-container>

client/src/app/site/common/components/user-statistics/user-statistics.component.scss

@@ -0,0 +1,25 @@
+.user-statistics-table {
+    width: 100%;
+    margin: 16px auto;
+
+    &,
+    td,
+    th {
+        border-collapse: collapse;
+        border-bottom-width: 1px;
+        border-bottom-style: solid;
+    }
+    td,
+    th {
+        padding: 8px 8px 8px 24px;
+        text-align: left;
+    }
+}
+
+.user-statistics-table--virtual-scroll {
+    height: 500px;
+
+    .pbl-ngrid-header-cell:not(:first-child):before {
+        display: none;
+    }
+}

client/src/app/site/common/components/user-statistics/user-statistics.component.scss-theme.scss

@@ -0,0 +1,19 @@
+@import '~@angular/material/theming';
+
+@mixin os-user-statistics-style($theme) {
+    $foreground: map-get($theme, foreground);
+    $text: mat-color($foreground, secondary-text);
+
+    .user-statistics-table {
+        th {
+            font-weight: 400;
+            color: $text;
+        }
+
+        &,
+        td,
+        th {
+            border-color: mat-color($foreground, divider);
+        }
+    }
+}

client/src/app/site/common/components/user-statistics/user-statistics.component.spec.ts

@@ -0,0 +1,26 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { E2EImportsModule } from 'e2e-imports.module';
+
+import { UserStatisticsComponent } from './user-statistics.component';
+
+describe('UserStatisticsComponent', () => {
+    let component: UserStatisticsComponent;
+    let fixture: ComponentFixture<UserStatisticsComponent>;
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+            imports: [E2EImportsModule]
+        }).compileComponents();
+    }));
+
+    beforeEach(() => {
+        fixture = TestBed.createComponent(UserStatisticsComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
+
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
+});

client/src/app/site/common/components/user-statistics/user-statistics.component.ts

@@ -0,0 +1,149 @@
+import { ChangeDetectionStrategy, Component, ViewEncapsulation } from '@angular/core';
+import { MatSnackBar } from '@angular/material/snack-bar';
+import { Title } from '@angular/platform-browser';
+
+import { TranslateService } from '@ngx-translate/core';
+import { PblColumnDefinition } from '@pebula/ngrid/lib/grid';
+import { BehaviorSubject, Observable } from 'rxjs';
+
+import {
+    ListOfSpeakersRepositoryService,
+    SpeakingTimeStructureLevelObject
+} from 'app/core/repositories/agenda/list-of-speakers-repository.service';
+import { DurationService } from 'app/core/ui-services/duration.service';
+import { ViewSpeaker } from 'app/site/agenda/models/view-speaker';
+import { BaseViewComponent } from 'app/site/base/base-view';
+
+@Component({
+    selector: 'os-user-statistics',
+    templateUrl: './user-statistics.component.html',
+    styleUrls: ['./user-statistics.component.scss'],
+    changeDetection: ChangeDetectionStrategy.OnPush,
+    encapsulation: ViewEncapsulation.None
+})
+export class UserStatisticsComponent extends BaseViewComponent {
+    /**
+     * Returns the total duration for a whole assembly.
+     */
+    public get totalDuration(): string {
+        return this.parseDuration(this.speakingTimeAsNumber, true);
+    }
+
+    public get numberOfUniqueSpeakers(): number {
+        return this.uniqueSpeakers.length;
+    }
+
+    public get numberOfWordRequests(): number {
+        return this._numberOfWordRequests;
+    }
+
+    /**
+     * Returns an observable containing a list. This list contains objects separated by the structure-level of speakers.
+     *
+     * Those objects hold information about number of word requests and duration of word requests for a given
+     * structure-level.
+     */
+    public get statisticsByStructureLevelObservable(): Observable<SpeakingTimeStructureLevelObject[]> {
+        return this.relationSpeakingTimeStructureLevelSubject.asObservable();
+    }
+
+    /**
+     * Dedicated, if statistics are opened.
+     */
+    public get openedStatistics(): boolean {
+        return this.statisticIsOpen;
+    }
+
+    public readonly columnDefinition: PblColumnDefinition[] = [
+        {
+            prop: 'structureLevel',
+            width: 'auto',
+            label: 'Structure level'
+        },
+        {
+            prop: 'durationOfWordRequests',
+            width: 'auto',
+            label: 'Duration of word requests'
+        },
+        {
+            prop: 'numberOfWordRequests',
+            width: 'auto',
+            label: 'Number of word requests'
+        }
+    ];
+
+    public readonly filterProps: string[] = ['structureLevel'];
+
+    /**
+     * Holds information about hours, minutes and seconds for the total duration of word requests.
+     */
+    private speakingTimeAsNumber = 0;
+
+    /**
+     * List of unique speakers.
+     */
+    private uniqueSpeakers: ViewSpeaker[] = [];
+    private _numberOfWordRequests = 0;
+    private statisticIsOpen = false;
+    private relationSpeakingTimeStructureLevelSubject = new BehaviorSubject<SpeakingTimeStructureLevelObject[]>([]);
+
+    public constructor(
+        title: Title,
+        protected translate: TranslateService,
+        matSnackBar: MatSnackBar,
+        private losRepo: ListOfSpeakersRepositoryService,
+        private durationService: DurationService
+    ) {
+        super(title, translate, matSnackBar);
+    }
+
+    /**
+     * Opens or closes statistics.
+     */
+    public changeViewOfStatistics(): void {
+        this.statisticIsOpen = !this.statisticIsOpen;
+        if (this.statisticIsOpen) {
+            this.startSubscription();
+        } else {
+            this.cleanSubjects();
+        }
+    }
+
+    /**
+     * This iterates over a list of list-of-speakers. For each speaker it calculates the duration the speaker
+     * has spoken.
+     */
+    private pushNextState(): void {
+        const list = this.losRepo.getSpeakingTimeStructureLevelRelation();
+        list.sort((a, b) => b.finishedSpeakers.length - a.finishedSpeakers.length);
+        for (const entry of list) {
+            this.speakingTimeAsNumber += entry.speakingTime;
+            this._numberOfWordRequests += entry.finishedSpeakers.length;
+        }
+        this.relationSpeakingTimeStructureLevelSubject.next(list);
+        this.uniqueSpeakers = this.losRepo.getAllFirstContributions();
+    }
+
+    /**
+     * Creates a string from a given `TimeObject`.
+     */
+    public parseDuration(time: number, withHours: boolean = false): string {
+        return !withHours
+            ? this.durationService.durationToString(time, 'm')
+            : this.durationService.durationToStringWithHours(time);
+    }
+
+    private startSubscription(): void {
+        this.subscriptions.push(
+            this.losRepo.getViewModelListObservable().subscribe(() => {
+                this.reset();
+                this.pushNextState();
+            })
+        );
+    }
+
+    private reset(): void {
+        this._numberOfWordRequests = 0;
+        this.speakingTimeAsNumber = 0;
+    }
+}

client/src/app/site/common/os-common.module.ts

@@ -8,9 +8,17 @@ import { LegalNoticeComponent } from './components/legal-notice/legal-notice.com
 import { PrivacyPolicyComponent } from './components/privacy-policy/privacy-policy.component';
 import { SharedModule } from '../../shared/shared.module';
 import { StartComponent } from './components/start/start.component';
+import { UserStatisticsComponent } from './components/user-statistics/user-statistics.component';
 
 @NgModule({
     imports: [CommonModule, CommonRoutingModule, SharedModule],
-    declarations: [PrivacyPolicyComponent, StartComponent, LegalNoticeComponent, CountUsersComponent, ErrorComponent]
+    declarations: [
+        PrivacyPolicyComponent,
+        StartComponent,
+        LegalNoticeComponent,
+        CountUsersComponent,
+        ErrorComponent,
+        UserStatisticsComponent
+    ]
 })
 export class OsCommonModule {}

client/src/styles.scss

@@ -34,6 +34,7 @@
 @import './app/shared/components/progress-snack-bar/progress-snack-bar.component.scss-theme.scss';
 @import './app/shared/components/jitsi/jitsi.component.scss-theme.scss';
 @import './app/shared/components/list-view-table/list-view-table.component.scss-theme.scss';
+@import './app/site/common/components/user-statistics/user-statistics.component.scss-theme.scss';
 
 /** fonts */
 @import './assets/styles/fonts.scss';
@@ -68,6 +69,7 @@ $narrow-spacing: (
     @include os-progress-snack-bar-style($theme);
     @include os-jitsi-theme($theme);
     @include os-list-view-table-theme($theme);
+    @include os-user-statistics-style($theme);
 }
 
 /** Load projector specific SCSS values */