main.go

package main

import (
	"fmt"
	"log"

	fuzzyfinder "github.com/ktr0731/go-fuzzyfinder"
)

type Track struct {
	Name      string
	AlbumName string
	Artist    string
}

var tracks = []Track{
	{"foo", "album1", "artist1"},
	{"bar", "album1", "artist1"},
	{"foo", "album2", "artist1"},
	{"baz", "album2", "artist2"},
	{"baz", "album3", "artist2"},
}

func main() {
	idx, err := fuzzyfinder.FindMulti(
		tracks,
		func(i int) string {
			return tracks[i].Name
		},
		fuzzyfinder.WithPreviewWindow(func(i, w, h int) string {
			if i == -1 {
				return ""
			}
			return fmt.Sprintf("Track: %s (%s)\nAlbum: %s",
				tracks[i].Name,
				tracks[i].Artist,
				tracks[i].AlbumName)
		}))
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("selected: %v\n", idx)
}