3 files changed, 39 insertions(+), 14 deletions(-)

M Makefile
M config.go
M main.go

@@ 10,6 10,7 @@ GO_SRC!=find * -type f -name '*.go'
 GO_LDFLAGS:=
 GO_LDFLAGS+=-X main.CLIENTID=$(file < clientid.txt)
 GO_LDFLAGS+=-X main.CLIENTSECRET=$(file < clientsecret.txt)
+# TODO: GO_LDFLAGS+=-X main.VERSION=0.0.1
 
 nspotify: go.mod $(GO_SRC)
 	go build -ldflags "$(GO_LDFLAGS)" .

@@ 7,41 7,54 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
-// Number of tracks to fetch into a buffer.
-const fetchingBuffer = 100
+// Compile-time configurations.
+const (
+	// Number of tracks to fetch into a buffer.
+	fetchingBuffer = 100
 
-// Number of seconds to wait before rechecking the lazy fetcher.
-const fetchingTimeout = 3
+	// Number of seconds to wait before rechecking the lazy fetcher.
+	fetchingTimeout = 3
 
-// Number of tracks to eagerly load.
-const loadEager = 50
+	// Number of tracks to eagerly load.
+	loadEager = 50
 
-// Number of tracks to lazily load ahead of the cursor.
-const loadLookahead = 50
+	// Number of tracks to lazily load ahead of the cursor.
+	loadLookahead = 50
 
-// Number of seconds to wait before rechecking how many trackers are loaded
-// ahead of the cursor.
-const loadTimeout = 3
+	// Number of seconds to wait before rechecking how many trackers are loaded
+	// ahead of the cursor.
+	loadTimeout = 3
+)
+
+// TODO: Compile-time variables.
+// These should be set by the linker.
+// e.g. `go build -ldflags="-X 'main.VERSION=0.1.2'"`
+// var (
+// 	VERSION = ""
+// )
 
-// Command line options.
+// Run-time configurations.
 var (
 	verbose = flag.Bool("verbose", false, "Show debugging messages (same as '-log-level=trace')")
 	quiet = flag.Bool("quiet", false, "Suppress messages (same as '-log-level=panic')")
 	log_level = flag.String("log-level", "", "Set logging level to `[trace|debug|info|warning|error|fatal|panic]`")
-	//TODO: log_file = flag.String("log-file", "", "Log to `file`")
+	// TODO: log_file = flag.String("log-file", "", "Log to `file`")
 	color = flag.Bool("color", true, "Display in color")
 	port = flag.Int("port", 8080, "Spotify authenticator port")
 	cache = flag.String("cache", "", "Cache `directory`")
 	no_cache = flag.Bool("no-cache", false, "Do not use cached authentication, do not cache authentication")
 	device = flag.String("device", "", "Spotify device `ID`")
 	list_devices = flag.Bool("list-devices", false, "List available Spotify devices and exit")
+	// TODO: version = flag.Bool("version", false, "List version and exit")
 )
 
+// Create a pointer to a value, especially a string.
 // Credit to `https://stackoverflow.com/a/30716481`:
 func Pointer[T any](v T) *T {
 	return &v
 }
 
+// Create a context with configurations applied.
 func ConfiguredContext() context.Context {
 	ctx := context.Background()
 


@@ 100,6 113,9 @@ func ConfiguredContext() context.Context {
 	}
 	ctx = context.WithValue(ctx, "device", *device)
 
+	// TODO: Signal `-version` by setting the version variable.
+	// ctx = context.WithValue(ctx, "version", VERSION)
+
 	return ctx
 }
 

@@ 10,9 10,17 @@ func main() {
 	ctx := ConfiguredContext()
 	ctx, cancel := context.WithCancel(ctx)
 
+	// TODO: Display version mode.
+	// version, ok := ctx.Value("version").(string)
+	// if ok && (version != "") {
+	// 	fmt.Println("nspotify %s", version)
+	// 	cancel()
+	// 	return
+	// }
+
 	// Authenticate with Spotify.
 	cli := Authenticate(ctx)
-	//TODO: incorporate rate limiting? "set the AutoRetry field on the Client struct to true"
+	// TODO: incorporate rate limiting? "set the AutoRetry field on the Client struct to true"
 
 	// List devices mode.
 	sdev, ok := ctx.Value("device").(string)