Client: fix loading server configurations

client/src/app/core/server/server.service.ts

@@ -0,0 +1,67 @@
+import { Injectable } from '@angular/core'
+import { HttpClient } from '@angular/common/http'
+
+import { ServerConfig } from '../../../../../shared'
+
+@Injectable()
+export class ServerService {
+  private static BASE_CONFIG_URL = API_URL + '/api/v1/config/'
+  private static BASE_VIDEO_URL = API_URL + '/api/v1/videos/'
+
+  private config: ServerConfig = {
+    signup: {
+      allowed: false
+    }
+  }
+  private videoCategories: Array<{ id: number, label: string }> = []
+  private videoLicences: Array<{ id: number, label: string }> = []
+  private videoLanguages: Array<{ id: number, label: string }> = []
+
+  constructor (private http: HttpClient) {}
+
+  loadConfig () {
+    this.http.get<ServerConfig>(ServerService.BASE_CONFIG_URL)
+             .subscribe(data => this.config = data)
+  }
+
+  loadVideoCategories () {
+    return this.loadVideoAttributeEnum('categories', this.videoCategories)
+  }
+
+  loadVideoLicences () {
+    return this.loadVideoAttributeEnum('licences', this.videoLicences)
+  }
+
+  loadVideoLanguages () {
+    return this.loadVideoAttributeEnum('languages', this.videoLanguages)
+  }
+
+  getConfig () {
+    return this.config
+  }
+
+  getVideoCategories () {
+    return this.videoCategories
+  }
+
+  getVideoLicences () {
+    return this.videoLicences
+  }
+
+  getVideoLanguages () {
+    return this.videoLanguages
+  }
+
+  private loadVideoAttributeEnum (attributeName: 'categories' | 'licences' | 'languages', hashToPopulate: { id: number, label: string }[]) {
+    return this.http.get(ServerService.BASE_VIDEO_URL + attributeName)
+               .subscribe(data => {
+                 Object.keys(data)
+                       .forEach(dataKey => {
+                         hashToPopulate.push({
+                           id: parseInt(dataKey, 10),
+                           label: data[dataKey]
+                         })
+                       })
+               })
+  }
+}