readded user-uploaded track support

.vscode/tasks.json

@@ -6,7 +6,7 @@
         {
             "label": "build",
             "type": "shell",
-            "command": "wrangler build",
+            "command": "NODE_OPTIONS=--openssl-legacy-provider wrangler build",
             "problemMatcher": [],
             "group": {
                 "kind": "build",
@@ -16,7 +16,7 @@
         {
             "label": "dev",
             "type": "shell",
-            "command": "wrangler dev",
+            "command": "NODE_OPTIONS=--openssl-legacy-provider wrangler dev",
             "problemMatcher": [],
             "group": {
                 "kind": "test",
@@ -26,7 +26,7 @@
         {
             "label": "publish",
             "type": "shell",
-            "command": "wrangler publish"
+            "command": "NODE_OPTIONS=--openssl-legacy-provider wrangler publish"
         }
     ]
 }

index.js

@@ -5,6 +5,9 @@ addEventListener('fetch', event => {
     event.respondWith(handleRequest(event.request))
 })
 
+const client_id = "447462"
+const client_secret = "a83bf7f38ad2f137e444727cfc3775cf"
+
 const formats = {
     aac_96:     { num: '8', gw: 'AAC_96', mime: 'audio/aac' },
     64:         { num: '10', gw: 'MP3_64', mime: 'audio/mpeg' },
@@ -63,28 +66,42 @@ async function gw_api_call(method, params) {
 }
 
 async function handler(type, request) {
-    license_token = await KV.get('license_token')
-    checkForm = await KV.get('checkForm')
-    sid = await KV.get('sid')
-
-    if (license_token === null) {
-        const user_data = await gw_api_call('deezer.getUserData')
-        if (user_data.constructor.name === 'Response') {
-            return user_data
-        }
-
-        if (user_data.USER.USER_ID === 0) {
-            return new Response('Invalid arl', { status: 500, headers: { 'content-type': 'text/plain' } })
-        }
-
-        license_token = user_data.USER.OPTIONS.license_token
-
-        await KV.put('license_token', license_token, { expirationTtl: 3600 })
-    }
-
     const url = new URL(request.url)
     const id = url.pathname.split('/')[2]
 
+    if (id[0] !== '-') {    // checks if not user-upped track
+        license_token = await KV.get('license_token')
+        checkForm = await KV.get('checkForm')
+        sid = await KV.get('sid')
+
+        if (license_token === null) {
+            const user_data = await gw_api_call('deezer.getUserData')
+            if (user_data.constructor.name === 'Response') {
+                return user_data
+            }
+
+            if (user_data.USER.USER_ID === 0) {
+                return new Response('Invalid arl', { status: 500, headers: { 'content-type': 'text/plain' } })
+            }
+
+            license_token = user_data.USER.OPTIONS.license_token
+
+            await KV.put('license_token', license_token, { expirationTtl: 3600 })
+        }
+    } else {
+        access_token = await KV.get('access_token')
+        if (access_token === null) {
+            const response = await fetch(`https://connect.deezer.com/oauth/access_token.php?grant_type=client_credentials&client_id=${client_id}&client_secret=${client_secret}&output=json`)
+            const json = await response.json()
+            if (json.error !== undefined) {
+                return new Response("Couldn't get access token from Deezer", { status: 500, headers: { 'content-type': 'text/plain' } })
+            }
+
+            access_token = json.access_token
+            await KV.put('access_token', access_token, { expirationTtl: parseInt(json.expires) })
+        }
+    }
+
     format = url.searchParams.get('f')
     if (format === null) {
         format = '320'
@@ -115,13 +132,34 @@ async function handler(type, request) {
 }
 
 async function track(id, format, tagging) {
-    const json = await gw_api_call('song.getData', { 'SNG_ID': id })
-    if (json.constructor.name === 'Response') {
-        return json
-    }
+    // other users' user-upped tracks cannot be downloaded with the gw-light API
+    let json;
+    if (id[0] !== '-') {
+        json = await gw_api_call('song.getData', { 'SNG_ID': id })
+        if (json.constructor.name === 'Response') {
+            return json
+        }
+    } else {    // user-upped track
+        const response = await fetch(`https://api.deezer.com/track/${id}?access_token=${access_token}`)
+        json = await response.json()
+        if (json.error !== undefined) {
+            return new Response(JSON.stringify(json.error), { status: 403, headers: { 'content-type': "application/json" } })
+        }
 
-    if (parseInt(json.SNG_ID) < 0) {   // user-uploaded track
-        format = 'misc'
+        json = {
+            SNG_ID: json.id,
+            FILESIZE_MISC: json.filesize_misc,
+            SNG_TITLE: json.title,
+            ALB_TITLE: json.album.title,
+            ART_NAME: json.artist.name,
+            ARTISTS: [{ART_NAME: json.artist.name}],
+            ISRC: '',
+            ALB_PICTURE: json.md5_image,
+            MD5_ORIGIN: json.md5_origin,
+            MEDIA_VERSION: json.media_version,
+        }
+
+        format = 'misc' // user-upped tracks always use 'misc' as format
     }
 
     if (json['FILESIZE_' + formats[format].gw] == false) {

wrangler.toml

@@ -7,4 +7,4 @@ kv_namespaces = [
     { binding = "KV", id = "974c0967a84e415daa054bbbcc7f80c6", preview_id = "cfcc6491f3484cbca664913836635113" }
 ]
 vars = { ARL = "amogus" }
-compatibility_date = "2021-10-14"
+compatibility_date = "2021-11-09"