Support for Multiple Chart Regions

builder.go

@@ -205,7 +205,7 @@ func NavigationButton(s gjson.Result) []Item {
 	return r
 }
 
-func MultiSelectMenuItemRenderer(j gjson.Result) []Item {
+func MultiSelectMenuItemRenderer(j, ref gjson.Result) []Item {
 
 	r := []Item{}
 
@@ -219,8 +219,12 @@ func MultiSelectMenuItemRenderer(j gjson.Result) []Item {
 			go func() {
 				defer wg.Done()
 
+				steg := v.Get("formItemEntityKey").String()
+				id := ref.Get("#(entityKey == " + steg + ")" +
+					".payload.musicFormBooleanChoice.opaqueToken")
+
 				r = append(r, Item{
-					Id:    v.Get("selectedCommand.commandExecutorCommand.commands.#(musicBrowseFormBinderCommand).musicBrowseFormBinderCommand.browseEndpoint.params").String(),
+					Id:    id.String(),
 					Title: RunsText(v.Get("title")),
 				})
 			}()

fetch.go

@@ -13,7 +13,7 @@ import (
 
 func Fetch(path string, data []byte) (string, int, error) {
 
-	url := "https://music.youtube.com/youtubei/v1/" + path + "?key=AIzaSyC9XL3ZjWddXya6X74dJoCTL-WEYFDNX30&prettyPrint=false"
+	url := "https://music.youtube.com/youtubei/v1/" + path + "?alt=json&key=AIzaSyC9XL3ZjWddXya6X74dJoCTL-WEYFDNX30&prettyPrint=false"
 
 	req, err := http.NewRequest("POST", url, bytes.NewBuffer(data))
 	if err != nil {
@@ -64,7 +64,7 @@ func FetchExplore() (string, int) {
 
 	id := "FEmusic_explore"
 
-	context := GetTypeBrowse("", id, "")
+	context := GetTypeBrowse("", id, "", "")
 
 	raw, status := FetchBrowse(context)
 
@@ -80,7 +80,7 @@ func FetchGenres() (string, int) {
 
 	id := "FEmusic_moods_and_genres"
 
-	context := GetTypeBrowse("", id, "")
+	context := GetTypeBrowse("", id, "", "")
 
 	raw, status := FetchBrowse(context)
 
@@ -96,7 +96,7 @@ func FetchGenre(param string) (string, int) {
 
 	id := "FEmusic_moods_and_genres_category"
 
-	context := GetTypeBrowse("", id, param)
+	context := GetTypeBrowse("", id, param, "")
 
 	raw, status := FetchBrowse(context)
 
@@ -108,11 +108,11 @@ func FetchGenre(param string) (string, int) {
 	return res, status
 }
 
-func FetchCharts(params string) (string, int) {
+func FetchCharts(params, code string) (string, int) {
 
 	id := "FEmusic_charts"
 
-	context := GetTypeBrowse("", id, params)
+	context := GetTypeBrowse("", id, params, code)
 
 	raw, status := FetchBrowse(context)
 
@@ -126,7 +126,7 @@ func FetchCharts(params string) (string, int) {
 
 func FetchArtist(id string) (string, int) {
 
-	context := GetTypeBrowse("artist", id, "")
+	context := GetTypeBrowse("artist", id, "", "")
 
 	raw, status := FetchBrowse(context)
 
@@ -140,7 +140,7 @@ func FetchArtist(id string) (string, int) {
 
 func FetchLyrics(id string) (string, int) {
 
-	context := GetTypeBrowse("lyrics", id, "")
+	context := GetTypeBrowse("lyrics", id, "", "")
 
 	raw, status := FetchBrowse(context)
 
@@ -154,7 +154,7 @@ func FetchLyrics(id string) (string, int) {
 
 func FetchAlbum(id string) (string, int) {
 
-	context := GetTypeBrowse("album", id, "")
+	context := GetTypeBrowse("album", id, "", "")
 
 	raw, status := FetchBrowse(context)
 

main.go

@@ -59,7 +59,7 @@ func HandleGenre(c *fiber.Ctx) error {
 func HandleCharts(c *fiber.Ctx) error {
 	defer calc()()
 
-	res, status := FetchCharts(c.Params("id"))
+	res, status := FetchCharts(c.Query("params"), c.Query("code"))
 
 	return c.Status(status).SendString(res)
 }
@@ -106,7 +106,7 @@ func main() {
 	app.Get("/explore", HandleExplore)
 	app.Get("/genres", HandleGenres)
 	app.Get("/genres/:id", HandleGenre)
-	app.Get("/charts/:id", HandleCharts)
+	app.Get("/charts", HandleCharts)
 	app.Get("/next/:id", HandleNext)
 	app.Get("/browse/:id", HandleBrowse)
 	app.Get("/channel/:id", HandleArtist)

parser.go

@@ -125,16 +125,29 @@ func ParseCharts(raw string) (string, error) {
 
 	j := gjson.Parse(raw)
 
-	c := j.Get("contents.singleColumnBrowseResultsRenderer.tabs.0.tabRenderer.content.sectionListRenderer.contents")
+	c := j.Get("contents.singleColumnBrowseResultsRenderer" +
+		".tabs.0.tabRenderer.content.sectionListRenderer.contents")
 
-	o := c.Get("0.musicShelfRenderer.subheaders.0.musicSideAlignedItemRenderer.startItems.0.musicSortFilterButtonRenderer")
-	a := c.Get("#(musicCarouselShelfRenderer.header.musicCarouselShelfBasicHeaderRenderer.title.runs.0.text == Top artists).musicCarouselShelfRenderer.contents")
-	t := c.Get("#(musicCarouselShelfRenderer.header.musicCarouselShelfBasicHeaderRenderer.title.runs.0.text == Trending).musicCarouselShelfRenderer.contents")
+	o := c.Get("0.musicShelfRenderer.subheaders.0" +
+		".musicSideAlignedItemRenderer.startItems.0" +
+		".musicSortFilterButtonRenderer")
+
+	a := c.Get("#(musicCarouselShelfRenderer.header.musicCarouselShelfBasicHeaderRenderer" +
+		".title.runs.0.text == Top artists)" +
+		".musicCarouselShelfRenderer.contents")
+
+	t := c.Get("#(musicCarouselShelfRenderer.header.musicCarouselShelfBasicHeaderRenderer" +
+		".title.runs.0.text == Trending)" +
+		".musicCarouselShelfRenderer.contents")
+
+	opts := o.Get("menu.musicMultiSelectMenuRenderer.options" +
+		".#.musicMultiSelectMenuItemRenderer")
+	ref := j.Get("frameworkUpdates.entityBatchUpdate.mutations")
 
 	val := Charts{
 		Options: Options{
 			Default: RunsText(o.Get("title")),
-			All:     MultiSelectMenuItemRenderer(o.Get("menu.musicMultiSelectMenuRenderer.options.#.musicMultiSelectMenuItemRenderer")),
+			All:     MultiSelectMenuItemRenderer(opts, ref),
 		},
 		Artists:  ResponsiveListItemRendererCH(a),
 		Trending: ResponsiveListItemRenderer(t),

structs.go

@@ -90,13 +90,17 @@ type Context struct {
 }
 
 type PageType struct {
-	PageType string `json:"pageType",omitempty`
+	PageType string `json:"pageType,omitempty"`
 }
 
 type BrowseMusicConfig struct {
 	MusicConfig PageType `json:"browseEndpointContextMusicConfig,omitempty"`
 }
 
+type Form struct {
+	Values []string `json:"selectedValues"`
+}
+
 type WatchMusicConfig struct {
 	Panel bool   `json:"hasPersistentPlaylistPanel,omitempty"`
 	Type  string `json:"musicVideoType,omitempty"`
@@ -107,6 +111,7 @@ type BrowseData struct {
 	MusicConfig BrowseMusicConfig `json:"browseEndpointContextMusicConfig,omitempty"`
 	BrowseId    string            `json:"browseId,omitempty"`
 	Params      string            `json:"params,omitempty"`
+	Form        Form              `json:"formData,omitempty"`
 }
 
 type NextData struct {

types.go

@@ -10,8 +10,7 @@ var BaseContext Context = Context{
 	},
 }
 
-func GetTypeBrowse(t, id, params string) BrowseData {
-
+func GetTypeBrowse(t, id, params, form string) BrowseData {
 	if t != "" {
 		return BrowseData{
 			Context: BaseContext,
@@ -22,6 +21,15 @@ func GetTypeBrowse(t, id, params string) BrowseData {
 			},
 			BrowseId: id,
 		}
+	} else if form != "" {
+		return BrowseData{
+			Context:  BaseContext,
+			BrowseId: id,
+			Params:   params,
+			Form: Form{
+				Values: []string{form},
+			},
+		}
 	} else {
 		return BrowseData{
 			Context:  BaseContext,
@@ -29,7 +37,6 @@ func GetTypeBrowse(t, id, params string) BrowseData {
 			Params:   params,
 		}
 	}
-
 }
 
 func GetTypeNext(id, pid string) NextData {