Update Database

Database is more usable now.
All pages have been updated to use the database, and share an application configuration.
Page Stack has been removed, no more pages hanging around in memory. Replaced with a 'Router' which uses an Enum to determine which page should be displayed, destroys the old page and initializes the new page all in one go. No more push, pop, rollback, etc. No more holding instances of pages.
Logger has been updated with proper timestamps and sorting now works as expected."

internal/mixer/mixer.go

@@ -4,7 +4,6 @@ package mixer
 import (
 	"errors"
 	"fmt"
-	"strconv"
 	"sync"
 
 	"github.com/veandco/go-sdl2/mix"
@@ -30,16 +29,20 @@ var (
 	defaultChannels  = 2
 	defaultChunkSize = 1024
 	defaultAllow     = sdl.AUDIO_ALLOW_ANY_CHANGE
+
+	refreshCacheCallback func()
 )
 
 // Init initializes SDL audio + SDL_mixer. Safe to call multiple times.
-func Init(wantedDevice string) error {
+func Init(cfg *db.AppConfig, onUpdate func()) error {
 	mu.Lock()
 	defer mu.Unlock()
 	if inited {
 		return nil
 	}
 
+	refreshCacheCallback = onUpdate
+
 	// Let SDL choose the best audio driver for the system
 	// Remove hardcoded ALSA preference to support PulseAudio, PipeWire, etc.
 	// Users can set SDL_AUDIODRIVER environment variable if needed
@@ -49,31 +52,21 @@ func Init(wantedDevice string) error {
 	}
 
 	// WAV-only does not require mix.Init(); add when you support OGG/MP3/etc.
-	if err := openDeviceLocked(wantedDevice); err != nil {
+	if err := openDeviceLocked(cfg.SelectedAudioDevice); err != nil {
 		// Clean up the subsystem on failure so callers can retry later.
 		sdl.QuitSubSystem(sdl.INIT_AUDIO)
 		return err
 	}
 
-	// Check if the volume is stored in the config; if not, default to max.
-	storedVolume, err := db.GetConfigValue("last_volume")
-	if err != nil {
-		return fmt.Errorf("retrieving last_volume from config: %w", err)
-	}
-
-	lastVolume, err := strconv.Atoi(storedVolume)
-	if err != nil {
-		return fmt.Errorf("parsing last_volume %q: %w", storedVolume, err)
-	}
-
-	if lastVolume < 0 {
-		lastVolume = int(mix.MAX_VOLUME)
-		currentVolume = lastVolume
-		if err := db.SetConfigValue("last_volume", strconv.Itoa(lastVolume)); err != nil {
-		}
-	} else {
-		currentVolume = lastVolume
-	}
+	// TODO: Check if this logic is still needed; move to application
+	// if lastVolume < 0 {
+	// 	lastVolume = int(mix.MAX_VOLUME)
+	// 	currentVolume = lastVolume
+	// 	if err := db.SetConfigValue("last_volume", strconv.Itoa(lastVolume)); err != nil {
+	// 	}
+	// } else {
+	// 	currentVolume = lastVolume
+	// }
 
 	// mix.VolumeMusic(currentVolume)
 
@@ -107,8 +100,8 @@ func openDeviceLocked(name string) error {
 
 // Play loads a WAV (as music) and plays it. If loopForever is true, loops forever.
 // If something is already playing, it stops and replaces it.
-func Play(path string, loopForever bool) error {
-	if !db.AudioEnabled() {
+func Play(path string, loopForever bool, cfg *db.AppConfig) error {
+	if !cfg.AudioEnabled {
 		return nil
 	}
 
@@ -159,8 +152,8 @@ func Play(path string, loopForever bool) error {
 
 // Stop stops playback. If fadeMs > 0, fades out asynchronously; otherwise halts immediately.
 // It also frees the currently loaded music (so a new Play will reload).
-func Stop(fadeMs int) {
-	if !db.AudioEnabled() {
+func Stop(fadeMs int, cfg *db.AppConfig) {
+	if !cfg.AudioEnabled {
 		return
 	}
 
@@ -184,8 +177,8 @@ func Stop(fadeMs int) {
 }
 
 // SetVolume128 sets music volume using SDL_mixer’s 0..128 scale.
-func SetVolume128(increment int) {
-	if !db.AudioEnabled() {
+func SetVolume128(increment int, cfg *db.AppConfig) {
+	if !cfg.AudioEnabled {
 		return
 	}
 
@@ -201,8 +194,8 @@ func SetVolume128(increment int) {
 	}
 
 	// Store in config
-	if err := db.SetConfigValue("last_volume", strconv.Itoa(currentVolume)); err != nil {
-	}
+	cfg.LastVolume = currentVolume
+	refreshCacheCallback()
 
 	// Apply to SDL_mixer
 	if inited && deviceOpen {