set song count

.run/build.run.xml

@@ -0,0 +1,12 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="build" type="js.build_tools.npm" nameIsGenerated="true">
+    <package-json value="$PROJECT_DIR$/package.json"/>
+    <command value="run"/>
+    <scripts>
+      <script value="build"/>
+    </scripts>
+    <node-interpreter value="project"/>
+    <envs/>
+    <method v="2"/>
+  </configuration>
+</component>

.run/deploy.run.xml

@@ -0,0 +1,12 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="deploy" type="js.build_tools.npm" nameIsGenerated="true">
+    <package-json value="$PROJECT_DIR$/package.json"/>
+    <command value="run"/>
+    <scripts>
+      <script value="deploy"/>
+    </scripts>
+    <node-interpreter value="project"/>
+    <envs/>
+    <method v="2"/>
+  </configuration>
+</component>

src/app/modules/shows/services/show-data.service.ts

@@ -14,6 +14,7 @@ export class ShowDataService {
     this.dbService.col$<Show>(this.collection).subscribe(_ => this.list$.next(_));
   }
 
+  public listRaw$ = () => this.dbService.col$<Show>(this.collection);
   public list$ = new BehaviorSubject<Show[]>([]);
   public read$ = (showId: string): Observable<Show | null> => this.list$.pipe(map(_ => _.find(s => s.id === showId) || null));
 

src/app/modules/shows/services/show-song.service.ts

@@ -29,6 +29,7 @@ export class ShowSongService {
       chordMode: user.chordMode,
       addedLive,
     };
+    await this.userService.incSongCount(songId);
     return await this.showSongDataService.add(showId, data);
   }
 
@@ -38,13 +39,15 @@ export class ShowSongService {
   public list$ = (showId: string): Observable<ShowSong[]> => this.showSongDataService.list$(showId);
   public list = (showId: string): Promise<ShowSong[]> => firstValueFrom(this.list$(showId));
 
-  public async delete$(showId: string, songId: string, index: number): Promise<void> {
-    await this.showSongDataService.delete(showId, songId);
+  public async delete$(showId: string, showSongId: string, index: number): Promise<void> {
+    const showSong = await this.read(showId, showSongId);
+    await this.showSongDataService.delete(showId, showSongId);
     const show = await firstValueFrom(this.showService.read$(showId));
     if (!show) return;
     const order = show.order;
     order.splice(index, 1);
     await this.showService.update$(showId, {order});
+    await this.userService.decSongCount(showSong.songId);
   }
 
   public update$ = async (showId: string, songId: string, data: Partial<ShowSong>): Promise<void> => await this.showSongDataService.update$(showId, songId, data);

src/app/modules/songs/song/song.component.html

@@ -29,10 +29,10 @@
           <div *ngIf="song.label">Verlag: {{ song.label }}</div>
           <div *ngIf="song.origin">Quelle: {{ song.origin }}</div>
           <div *ngIf="song.origin">Quelle: {{ song.origin }}</div>
+          <div *ngIf="songCount$()|async as count">Wie oft verwendet: {{ count }}</div>
         </div>
       </div>
 
-      <!-- <div class="text">{{song.text}}</div>-->
       <app-song-text
         *ngIf="user$ | async as user"
         [chordMode]="user.chordMode"

src/app/modules/songs/song/song.component.ts

@@ -1,9 +1,9 @@
 import {Component, OnInit} from '@angular/core';
 import {ActivatedRoute, Router} from '@angular/router';
 import {SongService} from '../services/song.service';
-import {map, switchMap} from 'rxjs/operators';
+import {distinctUntilChanged, map, switchMap} from 'rxjs/operators';
 import {Song} from '../services/song';
-import {Observable} from 'rxjs';
+import {combineLatest, Observable} from 'rxjs';
 import {FileDataService} from '../services/file-data.service';
 import {File} from '../services/file';
 import {UserService} from '../../../services/user/user.service';
@@ -71,4 +71,12 @@ export class SongComponent implements OnInit {
     await this.showService.update$(show?.id, {order: [...show.order, newId ?? '']});
     await this.router.navigateByUrl('/shows/' + show.id);
   }
+
+  public songCount$ = () =>
+    combineLatest([this.user$, this.song$]).pipe(
+      map(([user, song]) => {
+        return user.songUsage[song.id];
+      }),
+      distinctUntilChanged()
+    );
 }

src/app/services/user/user.service.ts

@@ -6,6 +6,8 @@ import {User} from './user';
 import {DbService} from '../db.service';
 import {environment} from '../../../environments/environment';
 import {Router} from '@angular/router';
+import {ShowDataService} from '../../modules/shows/services/show-data.service';
+import {ShowSongDataService} from '../../modules/shows/services/show-song-data.service';
 
 @Injectable({
   providedIn: 'root',
@@ -29,7 +31,9 @@ export class UserService {
   public constructor(
     private afAuth: AngularFireAuth,
     private db: DbService,
-    private router: Router
+    private router: Router,
+    private showDataService: ShowDataService,
+    private showSongDataService: ShowSongDataService
   ) {
     this.afAuth.authState
       .pipe(
@@ -49,6 +53,7 @@ export class UserService {
     const aUser = await this.afAuth.signInWithEmailAndPassword(user, password);
     if (!aUser.user) return null;
     const dUser = await this.readUser(aUser.user.uid);
+    await this.initSongUsage(dUser);
     this.iUser$.next(dUser);
     this.iUserId$.next(aUser.user.uid);
 
@@ -84,6 +89,40 @@ export class UserService {
     await this.router.navigateByUrl('/brand/new-user');
   }
 
+  public incSongCount = (songId: string) => this.updateSongUsage(songId, 1);
+  public decSongCount = (songId: string) => this.updateSongUsage(songId, -1);
+
+  private async updateSongUsage(songId: string, direction: number) {
+    const user = await firstValueFrom(this.user$);
+    if (!user) return null;
+
+    const songUsage = user?.songUsage ?? {};
+    let currentSongCount = songUsage[songId];
+    if (currentSongCount === null || currentSongCount === undefined) currentSongCount = 0;
+    else currentSongCount = currentSongCount + direction;
+    songUsage[songId] = Math.max(0, currentSongCount);
+
+    await this.update$(user.id, {songUsage});
+  }
+
+  private async initSongUsage(user: User) {
+    if (user.songUsage) return;
+
+    const shows = await firstValueFrom(this.showDataService.listRaw$());
+    const myShows = shows.filter(show => show.owner === user.id);
+    const songUsage: {[songId: string]: number} = {};
+    for (const show of myShows) {
+      const showSongs = await firstValueFrom(this.showSongDataService.list$(show.id));
+      for (const showSong of showSongs) {
+        const current = songUsage[showSong.songId] ?? 0;
+        songUsage[showSong.songId] = current + 1;
+      }
+    }
+
+    await this.update$(user.id, {songUsage});
+    return;
+  }
+
   private readUser$ = (uid: string) => this.db.doc$<User>('users/' + uid);
   private readUser: (uid: string) => Promise<User | null> = (uid: string) => firstValueFrom(this.readUser$(uid));
 }

src/app/services/user/user.ts

@@ -5,4 +5,5 @@ export interface User {
   name: string;
   role: string;
   chordMode: ChordMode;
+  songUsage: {[songId: string]: number};
 }