ini𝖔 𝕞𝐚𝔢 b𝖁𝖘𝖋𝖗𝖆𝕊t commit

src/api/appleMusicApi.ts

@@ -0,0 +1,72 @@
+import axios, { type AxiosInstance } from "axios";
+import { ampApiUrl, appleMusicHomepageUrl, licenseApiUrl, webplaybackApiUrl } from "../constants/urls.js";
+import type { GetSongResponse } from "./types/appleMusic/responses.js";
+import type { SongAttributesExtensionTypes } from "./types/appleMusic/extensions.js";
+import { getToken } from "./token.js";
+import { config } from "../config.js";
+
+export default class AppleMusicApi {
+    private storefront: string;
+    private http: AxiosInstance;
+
+    public constructor(
+        storefront: string,
+        language: string,
+        mediaUserToken: string
+    ) {
+        this.storefront = storefront;
+        this.http = axios.create({
+            baseURL: ampApiUrl,
+            headers: {
+                "Media-User-Token": mediaUserToken,
+                "Origin": appleMusicHomepageUrl
+            },
+            params: {
+                "l": language
+            }
+        });
+    }
+
+    public async login(): Promise<void> {
+        this.http.defaults.headers["Authorization"] = `Bearer ${await getToken(appleMusicHomepageUrl)}`;
+    }
+
+    async getSong<
+        T extends SongAttributesExtensionTypes = ["extendedAssetUrls"]
+    > (
+        id: string,
+        extend: T = ["extendedAssetUrls"] as T
+    ): Promise<GetSongResponse<T>> {
+        return (await this.http.get<GetSongResponse<T>>(`/v1/catalog/${this.storefront}/songs/${id}`, {
+            params: {
+                extend: extend.join(",")
+            }
+        })).data;
+    }
+
+    async getWebplayback(
+        trackId: string
+    ): Promise<unknown> {
+        return (await this.http.post(webplaybackApiUrl, {
+            salableAdamId: trackId,
+            language: config.downloader.api.language
+        })).data;
+    }
+
+    async getWidevineLicense(
+        trackId: string,
+        trackUri: string,
+        challenge: string
+    ): Promise<string> {
+        return (await this.http.post(licenseApiUrl, {
+            params: {
+                challenge: challenge,
+                "key-system": "com.widevine.alpha",
+                uri: trackUri,
+                adamId: trackId,
+                isLibrary: false,
+                "user-initiated": true
+            }
+        })).data;
+    }
+}