soundcloak/main.go

package main

import (
	"io/fs"
	"log"
	"math/rand"
	"net/url"
	"os"
	"strings"

	"git.maid.zone/stuff/soundcloak/lib/misc"
	"github.com/gofiber/fiber/v3"

	"github.com/goccy/go-json"
	"github.com/gofiber/fiber/v3/middleware/compress"
	"github.com/gofiber/fiber/v3/middleware/recover"
	"github.com/valyala/fasthttp"

	"git.maid.zone/stuff/soundcloak/lib/cfg"
	"git.maid.zone/stuff/soundcloak/lib/preferences"
	proxyimages "git.maid.zone/stuff/soundcloak/lib/proxy_images"
	proxystreams "git.maid.zone/stuff/soundcloak/lib/proxy_streams"
	"git.maid.zone/stuff/soundcloak/lib/restream"
	"git.maid.zone/stuff/soundcloak/lib/sc"
	static_files "git.maid.zone/stuff/soundcloak/static"
	"git.maid.zone/stuff/soundcloak/templates"
)

type osfs struct{}

func (osfs) Open(name string) (fs.File, error) {
	misc.Log("osfs:", name)

	if strings.HasPrefix(name, "js/") {
		return os.Open("static/external/" + name[3:])
	}

	f, err := os.Open("static/instance/" + name)
	if err == nil {
		return f, nil
	}

	f, err = os.Open("static/assets/" + name)
	return f, err
}

type staticfs struct {
}

func (staticfs) Open(name string) (fs.File, error) {
	misc.Log("staticfs:", name)

	if strings.HasPrefix(name, "js/") {
		return static_files.External.Open("external/" + name[3:])
	}

	f, err := static_files.Instance.Open("instance/" + name)
	if err == nil {
		return f, nil
	}

	f, err = static_files.Assets.Open("assets/" + name)
	return f, err
}

// stubby implementation of static middleware
// why? mainly because of the pathrewrite
// i hate seeing it trying to get root directory
func ServeFromFS(r fiber.Router, filesystem fs.FS) {
	const path = "/_/static"
	const l = len(path)
	fs := fasthttp.FS{
		FS: filesystem,
		PathRewrite: func(ctx *fasthttp.RequestCtx) []byte {
			return ctx.Path()[l:]
		},
		Compress:       true,
		CompressBrotli: true,
		CompressedFileSuffixes: map[string]string{
			"gzip": ".gzip",
			"br":   ".br",
			"zstd": ".zstd",
		},
	}

	handler := fs.NewRequestHandler()

	r.Use(path, func(c fiber.Ctx) error {
		handler(c.RequestCtx())
		if c.RequestCtx().Response.StatusCode() == 200 {
			c.Set("Cache-Control", "public, max-age=28800")
		}

		return nil
	})
}

func main() {
	app := fiber.New(fiber.Config{
		//Prefork: cfg.Prefork, // moved to ListenConfig in v3
		JSONEncoder: json.Marshal,
		JSONDecoder: json.Unmarshal,

		TrustProxy:       cfg.TrustedProxyCheck,
		TrustProxyConfig: fiber.TrustProxyConfig{Proxies: cfg.TrustedProxies},
	})

	if !cfg.Debug { // you wanna catch any possible panics as soon as possible
		app.Use(recover.New())
	}

	app.Use(compress.New(compress.Config{
		Next: func(c fiber.Ctx) bool {
			return strings.HasPrefix(c.Path(), "/_/static")
		},
		Level: compress.LevelBestSpeed,
	}))

	// Just for easy inspection of cache in development. Since debug is constant, the compiler will just remove the code below if it's set to false, so this has no runtime overhead.
	if cfg.Debug {
		app.Get("/_/cachedump/tracks", func(c fiber.Ctx) error {
			return c.JSON(sc.TracksCache)
		})

		app.Get("/_/cachedump/playlists", func(c fiber.Ctx) error {
			return c.JSON(sc.PlaylistsCache)
		})

		app.Get("/_/cachedump/users", func(c fiber.Ctx) error {
			return c.JSON(sc.UsersCache)
		})

		app.Get("/_/cachedump/clientId", func(c fiber.Ctx) error {
			return c.JSON(sc.ClientIDCache)
		})
	}

	{
		mainPageHandler := func(c fiber.Ctx) error {
			prefs, err := preferences.Get(c)
			if err != nil {
				return err
			}

			c.Set("Content-Type", "text/html")
			return templates.Base("", templates.MainPage(prefs), templates.MainPageHead()).Render(c.RequestCtx(), c)
		}

		app.Get("/", mainPageHandler)
		app.Get("/index.html", mainPageHandler)
	}

	const AssetsCacheControl = "public, max-age=28800" // 8hrs
	if cfg.EmbedFiles {
		misc.Log("using embedded files")
		ServeFromFS(app, staticfs{})
	} else {
		misc.Log("loading files dynamically")
		ServeFromFS(app, osfs{})
	}

	// why? because when you load a page without link rel="icon" the browser will
	// try to load favicon from default location,
	// and this path loads the user "favicon.ico" by default
	if cfg.Debug {
		app.Get("favicon.ico", func(c fiber.Ctx) error {
			return c.Redirect().To("/_/static/favicon.ico")
		})
	}

	app.Get("/search", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		q := c.Query("q")
		t := c.Query("type")
		switch t {
		case "tracks":
			p, err := sc.SearchTracks("", prefs, c.Query("pagination", "?q="+url.QueryEscape(q)))
			if err != nil {
				log.Printf("error getting tracks for %s: %s\n", q, err)
				return err
			}

			c.Set("Content-Type", "text/html")
			return templates.Base("tracks: "+q, templates.SearchTracks(p), nil).Render(c.RequestCtx(), c)

		case "users":
			p, err := sc.SearchUsers("", prefs, c.Query("pagination", "?q="+url.QueryEscape(q)))
			if err != nil {
				log.Printf("error getting users for %s: %s\n", q, err)
				return err
			}

			c.Set("Content-Type", "text/html")
			return templates.Base("users: "+q, templates.SearchUsers(p), nil).Render(c.RequestCtx(), c)

		case "playlists":
			p, err := sc.SearchPlaylists("", prefs, c.Query("pagination", "?q="+url.QueryEscape(q)))
			if err != nil {
				log.Printf("error getting users for %s: %s\n", q, err)
				return err
			}

			c.Set("Content-Type", "text/html")
			return templates.Base("playlists: "+q, templates.SearchPlaylists(p), nil).Render(c.RequestCtx(), c)
		}

		return c.SendStatus(404)
	})

	// someone is trying to hit those endpoints on sc.maid.zone at like 4am lol
	// those are authentication-only, planning to make something similar later on
	app.Get("/stream", func(c fiber.Ctx) error {
		return c.Redirect().To("/")
	})

	app.Get("/feed", func(c fiber.Ctx) error {
		return c.Redirect().To("/")
	})

	app.Get("/on/:id", func(c fiber.Ctx) error {
		id := c.Params("id")
		if id == "" {
			return fiber.ErrNotFound
		}

		req := fasthttp.AcquireRequest()
		defer fasthttp.ReleaseRequest(req)

		req.Header.SetMethod("HEAD")
		req.SetRequestURI("https://on.soundcloud.com/" + id)
		req.Header.SetUserAgent(cfg.UserAgent)

		resp := fasthttp.AcquireResponse()
		defer fasthttp.ReleaseResponse(resp)

		err := fasthttp.Do(req, resp)
		if err != nil {
			return err
		}

		loc := resp.Header.Peek("location")
		if len(loc) == 0 {
			return fiber.ErrNotFound
		}

		//fmt.Println(c.Hostname(), c.Protocol(), c.IPs())

		u, err := url.Parse(string(loc))
		if err != nil {
			return err
		}

		return c.Redirect().To(u.Path)
	})

	app.Get("/w/player", func(c fiber.Ctx) error {
		u := c.Query("url")
		if u == "" {
			return fiber.ErrNotFound
		}

		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		track, err := sc.GetArbitraryTrack(cid, u)
		if err != nil {
			log.Printf("error getting %s: %s\n", u, err)
			return err
		}
		track.Postfix(prefs, true)

		displayErr := ""
		stream := ""

		if *prefs.Player != cfg.NonePlayer {
			tr, _ := track.Media.SelectCompatible(*prefs.HLSAudio, false)
			if tr == nil {
				err = sc.ErrIncompatibleStream
			} else if *prefs.Player == cfg.HLSPlayer {
				stream, err = tr.GetStream(cid, prefs, track.Authorization)
			}

			if err != nil {
				displayErr = "Failed to get track stream: " + err.Error()
				if track.Policy == sc.PolicyBlock {
					displayErr += "\nThis track may be blocked in the country where this instance is hosted."
				}
			}
		}

		c.Set("Content-Type", "text/html")
		return templates.TrackEmbed(prefs, track, stream, displayErr).Render(c.RequestCtx(), c)
	})

	app.Get("/tags/:tag", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		tag := c.Params("tag")
		p, err := sc.RecentTracks(cid, prefs, c.Query("pagination", tag+"?limit=20"))
		if err != nil {
			log.Printf("error getting %s tagged recent-tracks: %s\n", tag, err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base("Recent tracks tagged "+tag, templates.RecentTracks(tag, p), nil).Render(c.RequestCtx(), c)
	})

	app.Get("/tags/:tag/popular-tracks", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		tag := c.Params("tag")
		p, err := sc.SearchTracks(cid, prefs, c.Query("pagination", "?q=*&filter.genre_or_tag="+tag+"&sort=popular"))
		if err != nil {
			log.Printf("error getting %s tagged popular-tracks: %s\n", tag, err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base("Popular tracks tagged "+tag, templates.PopularTracks(tag, p), nil).Render(c.RequestCtx(), c)
	})

	app.Get("/tags/:tag/playlists", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		tag := c.Params("tag")
		// Using a different method, since /playlists/discovery endpoint seems to be broken :P
		p, err := sc.SearchPlaylists(cid, prefs, c.Query("pagination", "?q=*&filter.genre_or_tag="+tag))
		if err != nil {
			log.Printf("error getting %s tagged playlists: %s\n", tag, err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base("Playlists tagged "+tag, templates.TaggedPlaylists(tag, p), nil).Render(c.RequestCtx(), c)
	})

	app.Get("/_/featured", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		tracks, err := sc.GetFeaturedTracks("", prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting featured tracks: %s\n", err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base("Featured Tracks", templates.FeaturedTracks(tracks), nil).Render(c.RequestCtx(), c)
	})

	app.Get("/discover", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		selections, err := sc.GetSelections("", prefs) // There is no pagination
		if err != nil {
			log.Printf("error getting selections: %s\n", err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base("Discover", templates.Discover(selections), nil).Render(c.RequestCtx(), c)
	})

	if cfg.ProxyImages {
		proxyimages.Load(app)
	}

	if cfg.ProxyStreams {
		proxystreams.Load(app)
	}

	if cfg.InstanceInfo {
		type info struct {
			Commit             string
			Repo               string
			ProxyImages        bool
			ProxyStreams       bool
			Restream           bool
			GetWebProfiles     bool
			DefaultPreferences cfg.Preferences
		}

		inf, err := json.Marshal(info{
			Commit:             cfg.Commit,
			Repo:               cfg.Repo,
			ProxyImages:        cfg.ProxyImages,
			ProxyStreams:       cfg.ProxyStreams,
			Restream:           cfg.Restream,
			GetWebProfiles:     cfg.GetWebProfiles,
			DefaultPreferences: cfg.DefaultPreferences,
		})
		if err != nil {
			log.Fatalln("failed to marshal info: ", err)
		}

		app.Get("/_/info", func(c fiber.Ctx) error {
			c.Set("Content-Type", "application/json")
			return c.Send(inf)
		})
	}

	if cfg.Restream {
		restream.Load(app)
	}

	preferences.Load(app)

	app.Get("/_/searchSuggestions", func(c fiber.Ctx) error {
		q := c.Query("q")
		if q == "" {
			return fiber.ErrBadRequest
		}

		s, err := sc.GetSearchSuggestions("", q)
		if err != nil {
			return err
		}

		return c.JSON(s)
	})

	// Currently, /:user is the tracks page
	app.Get("/:user/tracks", func(c fiber.Ctx) error {
		return c.Redirect().To("/" + c.Params("user"))
	})

	app.Get("/:user/sets", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (playlists): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		pl, err := user.GetPlaylists(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s playlists: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserPlaylists(prefs, user, pl), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/albums", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (albums): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		pl, err := user.GetAlbums(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s albums: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserAlbums(prefs, user, pl), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/reposts", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (reposts): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		p, err := user.GetReposts(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s reposts: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserReposts(prefs, user, p), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/likes", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (likes): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		p, err := user.GetLikes(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s likes: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserLikes(prefs, user, p), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/popular-tracks", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (popular-tracks): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		p, err := user.GetTopTracks(cid, prefs)
		if err != nil {
			log.Printf("error getting %s popular tracks: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserTopTracks(prefs, user, p), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/followers", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (followers): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		p, err := user.GetFollowers(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s followers: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserFollowers(prefs, user, p), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/following", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (following): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		p, err := user.GetFollowing(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s following: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserFollowing(prefs, user, p), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/:track", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		track, err := sc.GetTrack(cid, c.Params("user")+"/"+c.Params("track"))
		if err != nil {
			log.Printf("error getting %s from %s: %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}
		track.Postfix(prefs, true)

		displayErr := ""
		stream := ""
		audio := ""

		if *prefs.Player != cfg.NonePlayer {
			if *prefs.Player == cfg.HLSPlayer {
				var tr *sc.Transcoding
				tr, audio = track.Media.SelectCompatible(*prefs.HLSAudio, false)
				if tr == nil {
					err = sc.ErrIncompatibleStream
				} else {
					stream, err = tr.GetStream(cid, prefs, track.Authorization)
				}
			} else {
				_, audio = track.Media.SelectCompatible(*prefs.RestreamAudio, true)
				if audio == "" {
					err = sc.ErrIncompatibleStream
				}
			}

			if err != nil {
				displayErr = "Failed to get track stream: " + err.Error()
				if track.Policy == sc.PolicyBlock {
					displayErr += "\nThis track may be blocked in the country where this instance is hosted."
				}
			}
		}

		var playlist *sc.Playlist
		var nextTrack *sc.Track
		mode := c.Query("mode", *prefs.DefaultAutoplayMode)
		if pl := c.Query("playlist"); pl != "" {
			p, err := sc.GetPlaylist(cid, pl)
			if err != nil {
				log.Printf("error getting %s playlist (track): %s\n", pl, err)
				return err
			}

			p.Tracks = p.Postfix(prefs, true, false)

			nextIndex := -1
			if mode == cfg.AutoplayRandom {
				nextIndex = rand.Intn(len(p.Tracks))
			} else {
				for i, t := range p.Tracks {
					if t.ID == track.ID {
						nextIndex = i + 1
					}
				}

				if nextIndex == len(p.Tracks) {
					nextIndex = 0
				}
			}

			if nextIndex != -1 {
				nextTrack = &p.Tracks[nextIndex]
				playlist = &p

				if nextTrack.Title == "" {
					nt, err := sc.GetTrackByID(cid, string(nextTrack.ID))
					if err != nil {
						return err
					}

					nt.Postfix(prefs, false)

					nextTrack = &nt
				}
			}
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(track.Title+" by "+track.Author.Username, templates.Track(prefs, track, stream, displayErr, c.Query("autoplay") == "true", playlist, nextTrack, c.Query("volume"), mode, audio), templates.TrackHeader(prefs, track, true)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		usr, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s: %s\n", c.Params("user"), err)
			return err
		}
		usr.Postfix(prefs)

		p, err := usr.GetTracks(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s tracks: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(usr.Username, templates.User(prefs, usr, p), templates.UserHeader(usr)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/sets/:playlist", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		playlist, err := sc.GetPlaylist(cid, c.Params("user")+"/sets/"+c.Params("playlist"))
		if err != nil {
			log.Printf("error getting %s playlist from %s: %s\n", c.Params("playlist"), c.Params("user"), err)
			return err
		}
		// Don't ask why
		playlist.Tracks = playlist.Postfix(prefs, true, true)

		p := c.Query("pagination")
		if p != "" {
			tracks, next, err := sc.GetNextMissingTracks(cid, p)
			if err != nil {
				log.Printf("error getting %s playlist tracks from %s: %s\n", c.Params("playlist"), c.Params("user"), err)
				return err
			}

			for i, track := range tracks {
				track.Postfix(prefs, false)
				tracks[i] = track
			}

			playlist.Tracks = tracks
			playlist.MissingTracks = strings.Join(next, ",")
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(playlist.Title+" by "+playlist.Author.Username, templates.Playlist(prefs, playlist), templates.PlaylistHeader(playlist)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/_/related", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		user, err := sc.GetUser(cid, c.Params("user"))
		if err != nil {
			log.Printf("error getting %s (related): %s\n", c.Params("user"), err)
			return err
		}
		user.Postfix(prefs)

		r, err := user.GetRelated(cid, prefs)
		if err != nil {
			log.Printf("error getting %s related users: %s\n", c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(user.Username, templates.UserRelated(prefs, user, r), templates.UserHeader(user)).Render(c.RequestCtx(), c)
	})

	// I'd like to make this "related" but keeping it "recommended" to have the same url as soundcloud
	app.Get("/:user/:track/recommended", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		track, err := sc.GetTrack(cid, c.Params("user")+"/"+c.Params("track"))
		if err != nil {
			log.Printf("error getting %s from %s (related): %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}
		track.Postfix(prefs, true)

		r, err := track.GetRelated(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s from %s related tracks: %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(track.Title+" by "+track.Author.Username, templates.RelatedTracks(track, r), templates.TrackHeader(prefs, track, false)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/:track/sets", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		track, err := sc.GetTrack(cid, c.Params("user")+"/"+c.Params("track"))
		if err != nil {
			log.Printf("error getting %s from %s (sets): %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}
		track.Postfix(prefs, true)

		p, err := track.GetPlaylists(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s from %s sets: %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(track.Title+" by "+track.Author.Username, templates.TrackInPlaylists(track, p), templates.TrackHeader(prefs, track, false)).Render(c.RequestCtx(), c)
	})

	app.Get("/:user/:track/albums", func(c fiber.Ctx) error {
		prefs, err := preferences.Get(c)
		if err != nil {
			return err
		}

		cid, err := sc.GetClientID()
		if err != nil {
			return err
		}

		track, err := sc.GetTrack(cid, c.Params("user")+"/"+c.Params("track"))
		if err != nil {
			log.Printf("error getting %s from %s (albums): %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}
		track.Postfix(prefs, true)

		p, err := track.GetAlbums(cid, prefs, c.Query("pagination", "?limit=20"))
		if err != nil {
			log.Printf("error getting %s from %s albums: %s\n", c.Params("track"), c.Params("user"), err)
			return err
		}

		c.Set("Content-Type", "text/html")
		return templates.Base(track.Title+" by "+track.Author.Username, templates.TrackInAlbums(track, p), templates.TrackHeader(prefs, track, false)).Render(c.RequestCtx(), c)
	})

	if cfg.CodegenConfig {
		log.Println("Warning: you have CodegenConfig enabled, but the config was loaded dynamically.")
	}
	log.Fatal(app.Listen(cfg.Addr, fiber.ListenConfig{EnablePrefork: cfg.Prefork}))
}