half decent album list with art

src/subsonic/api.ts

@@ -1,5 +1,6 @@
 import { DOMParser } from 'xmldom';
-import { GetAlbumList2Params, GetAlbumListParams, GetArtistInfo2Params, GetArtistInfoParams, GetIndexesParams } from './params';
+import RNFS from 'react-native-fs';
+import { GetAlbumList2Params, GetAlbumListParams, GetArtistInfo2Params, GetArtistInfoParams, GetCoverArtParams, GetIndexesParams } from './params';
 import { GetAlbumList2Response, GetAlbumListResponse, GetArtistInfo2Response, GetArtistInfoResponse, GetArtistsResponse, GetIndexesResponse, SubsonicResponse } from './responses';
 
 export class SubsonicApiError extends Error {
@@ -35,7 +36,7 @@ export class SubsonicApiClient {
     this.params.append('c', 'subsonify-cool-unique-app-string')
   }
 
-  private async apiRequest(method: string, params?: {[key: string]: any}): Promise<Document> {
+  private buildUrl(method: string, params?: {[key: string]: any}): string {
     let query = this.params.toString();
     if (params) {
       const urlParams = this.obj2Params(params);
@@ -45,10 +46,21 @@ export class SubsonicApiClient {
     }
 
     const url = `${this.address}/rest/${method}?${query}`;
-
     console.log(url);
+    return url;
+  }
 
-    const response = await fetch(url);
+  private async apiDownload(method: string, path: string, params?: {[key: string]: any}): Promise<string> {
+    await RNFS.downloadFile({
+      fromUrl: this.buildUrl(method, params),
+      toFile: path,
+    }).promise;
+    
+    return path;
+  }
+
+  private async apiGetXml(method: string, params?: {[key: string]: any}): Promise<Document> {
+    const response = await fetch(this.buildUrl(method, params));
     const text = await response.text();
 
     console.log(text);
@@ -80,7 +92,7 @@ export class SubsonicApiClient {
   // 
 
   async ping(): Promise<SubsonicResponse<null>> {
-    const xml = await this.apiRequest('ping');
+    const xml = await this.apiGetXml('ping');
     return new SubsonicResponse<null>(xml, null);
   }
 
@@ -89,22 +101,22 @@ export class SubsonicApiClient {
   // 
 
   async getArtists(): Promise<SubsonicResponse<GetArtistsResponse>> {
-    const xml = await this.apiRequest('getArtists');
+    const xml = await this.apiGetXml('getArtists');
     return new SubsonicResponse<GetArtistsResponse>(xml, new GetArtistsResponse(xml));
   }
 
   async getIndexes(params?: GetIndexesParams): Promise<SubsonicResponse<GetIndexesResponse>> {
-    const xml = await this.apiRequest('getIndexes', params);
+    const xml = await this.apiGetXml('getIndexes', params);
     return new SubsonicResponse<GetIndexesResponse>(xml, new GetIndexesResponse(xml));
   }
 
   async getArtistInfo(params: GetArtistInfoParams): Promise<SubsonicResponse<GetArtistInfoResponse>> {
-    const xml = await this.apiRequest('getArtistInfo', params);
+    const xml = await this.apiGetXml('getArtistInfo', params);
     return new SubsonicResponse<GetArtistInfoResponse>(xml, new GetArtistInfoResponse(xml));
   }
 
   async getArtistInfo2(params: GetArtistInfo2Params): Promise<SubsonicResponse<GetArtistInfo2Response>> {
-    const xml = await this.apiRequest('getArtistInfo2', params);
+    const xml = await this.apiGetXml('getArtistInfo2', params);
     return new SubsonicResponse<GetArtistInfo2Response>(xml, new GetArtistInfo2Response(xml));
   }
 
@@ -113,12 +125,21 @@ export class SubsonicApiClient {
   // 
 
   async getAlbumList(params: GetAlbumListParams): Promise<SubsonicResponse<GetAlbumListResponse>> {
-    const xml = await this.apiRequest('getAlbumList', params);
+    const xml = await this.apiGetXml('getAlbumList', params);
     return new SubsonicResponse<GetAlbumListResponse>(xml, new GetAlbumListResponse(xml));
   }
 
   async getAlbumList2(params: GetAlbumList2Params): Promise<SubsonicResponse<GetAlbumList2Response>> {
-    const xml = await this.apiRequest('getAlbumList2', params);
+    const xml = await this.apiGetXml('getAlbumList2', params);
     return new SubsonicResponse<GetAlbumList2Response>(xml, new GetAlbumList2Response(xml));
   }
+
+  // 
+  // Media retrieval
+  // 
+
+  async getCoverArt(params: GetCoverArtParams): Promise<string> {
+    const path = `${RNFS.DocumentDirectoryPath}/image_cache/${params.id}`;
+    return await this.apiDownload('getCoverArt', path, params);
+  }
 }

src/subsonic/params.ts

@@ -45,3 +45,12 @@ export type GetAlbumList2Params = {
 } | GetAlbumList2TypeByYear | GetAlbumList2TypeByGenre;
 
 export type GetAlbumListParams = GetAlbumList2Params;
+
+// 
+// Media retrieval
+// 
+
+export type GetCoverArtParams = {
+  id: string;
+  size?: string;
+}