feat(examples): add new search example

examples/search/christmas_example/christmas_search.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	spotifyauth "github.com/zmb3/spotify/v2/auth"
+
+	"golang.org/x/oauth2/clientcredentials"
+
+	"github.com/zmb3/spotify/v2"
+)
+
+func main() {
+	// --- (1) ----
+	// Login to Spotify
+	ctx := context.Background()
+
+	config := &clientcredentials.Config{
+		ClientID:     os.Getenv("SPOTIFY_ID"),
+		ClientSecret: os.Getenv("SPOTIFY_SECRET"),
+		TokenURL:     spotifyauth.TokenURL,
+		Scopes:       []string{spotifyauth.ScopeUserReadPrivate, spotifyauth.ScopeUserReadEmail},
+	}
+	token, err := config.Token(ctx)
+	if err != nil {
+		log.Fatalf("couldn't get token: %v", err)
+	}
+
+	httpClient := spotifyauth.Authenticator{}.Client(ctx, token)
+	client := spotify.New(httpClient)
+
+	// --- (2) ----
+	// Run a search and recover all the playlists that have christmas in their name
+	results, err := client.Search(ctx, "christmas", spotify.SearchTypePlaylist)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// --- (3) ----
+	// Handle playlist results
+	tracks := make(map[string]spotify.PlaylistTrack, 40)
+	if results.Playlists != nil {
+		for _, item := range results.Playlists.Playlists {
+
+			// --- (3.1) ----
+			// Get all the songs from the playlists
+			playlistsTracks, err := client.GetPlaylistTracks(ctx, item.ID)
+			if err != nil {
+				log.Fatal(err)
+			}
+			for page := 1; ; page++ {
+				for _, track := range playlistsTracks.Tracks {
+					// If the track is not already included, we add it
+					if _, found := tracks[track.Track.Name]; !found && len(tracks) < 40 {
+						tracks[track.Track.Name] = track
+					}
+				}
+				err = client.NextPage(ctx, playlistsTracks)
+				if err == spotify.ErrNoMorePages {
+					break
+				}
+				if err != nil {
+					log.Fatal(err)
+				}
+			}
+		}
+	}
+
+	fmt.Println("Top Christams Songs:")
+	for k := range tracks {
+		fmt.Println("   ", k)
+	}
+
+}