Refactor search service

src/app/core/services/search.service.ts

@@ -0,0 +1,33 @@
+import { Injectable, EventEmitter } from '@angular/core'
+import { ElectronService } from './electron.service'
+import { SearchType, SongResult } from 'src/electron/shared/interfaces/search.interface'
+
+@Injectable({
+  providedIn: 'root'
+})
+export class SearchService {
+
+  private resultsChangedEmitter = new EventEmitter<SongResult[]>() // For when any results change
+  private newResultsEmitter = new EventEmitter<SongResult[]>()     // For when a new search happens
+  private results: SongResult[] = []
+
+  constructor(private electronService: ElectronService) { }
+
+  async newSearch(query: string) {
+    this.results = await this.electronService.invoke('song-search', { query, type: SearchType.Any })
+    this.newResultsEmitter.emit(this.results)
+    this.resultsChangedEmitter.emit(this.results)
+  }
+
+  onSearchChanged(callback: (results: SongResult[]) => void) {
+    this.resultsChangedEmitter.subscribe(callback)
+  }
+
+  onNewSearch(callback: (results: SongResult[]) => void) {
+    this.newResultsEmitter.subscribe(callback)
+  }
+
+  get resultCount() {
+    return this.results.length
+  }
+}