Ben / moon

#pragma once
#include "lvgl.h"
#include "playlist.h"
#include "storage.h"
#include <stdint.h>

// Screen types enum
typedef enum {
  SCREEN_NONE = 0,
  SCREEN_HOME,
  SCREEN_FILES,
  SCREEN_NOW_PLAYING,
  SCREEN_QUEUE_DIALOG,
  SCREEN_AUDIOBOOKS,
  SCREEN_MUSIC,
  SCREEN_SETTINGS,
  SCREEN_USB,
} screen_type_t;

// Global app config (available to all screens)
typedef struct {
  uint8_t volume;             // 0-100
  uint8_t brightness;         // 0-100
  char last_played_path[256]; // Path of last played file for navigation
  char audiobook_dir[256];    // Non-empty = directory playback mode

  // Queue dialog context
  char pending_path[256];
  playlist_type_t pending_type;
  screen_type_t return_screen;
  char return_cwd[STORAGE_MAX_PATH];
  char return_focus[STORAGE_MAX_NAME];
} app_state_t;

#ifdef ESP_PLATFORM
#include "esp_log.h"
#endif

#ifndef ESP_PLATFORM
#define ESP_LOGI(_TAG_, ...) fprintf(stderr, _TAG_ ": " __VA_ARGS__)
#endif

// Forward declarations for screen state types
typedef struct home_screen_state home_screen_state_t;
typedef struct files_screen_state files_screen_state_t;
typedef struct now_playing_screen_state now_playing_screen_state_t;
typedef struct queue_dialog_screen_state queue_dialog_screen_state_t;
typedef struct audiobooks_screen_state audiobooks_screen_state_t;
typedef struct music_screen_state music_screen_state_t;
typedef struct settings_screen_state settings_screen_state_t;
typedef struct usb_screen_state usb_screen_state_t;

// Tagged union for current screen state
typedef struct {
  screen_type_t type;
  union {
    home_screen_state_t *home;
    files_screen_state_t *files;
    now_playing_screen_state_t *now_playing;
    queue_dialog_screen_state_t *queue_dialog;
    audiobooks_screen_state_t *audiobooks;
    music_screen_state_t *music;
    settings_screen_state_t *settings;
    usb_screen_state_t *usb;
  };
} ui_state_t;

// Globals
extern app_state_t app_state;
extern ui_state_t ui_state;
extern char string_buffer[256];

// Dispatch functions
ui_state_t setup_screen(screen_type_t type);
void free_screen(void);
void update_screen(void);

// Navigation helper
#define navigate_to(screen_type)                                               \
  do {                                                                         \
    free_screen();                                                             \
    ui_state = setup_screen(screen_type);                                      \
  } while (0)

lv_obj_t *bvs_list_add_button(lv_obj_t *list, const void *icon,
                              const char *txt);
lv_obj_t *bvs_list_create(void);
void bvs_list_clear(lv_obj_t *list);

// File browser utilities shared by files/music/audiobooks screens
void path_parent(const char *path, char *parent, size_t parent_size,
                 char *basename, size_t basename_size);
int entry_name_cmp(const void *a, const void *b);
int get_sorted_entries(const char *dir, storage_entry_t *entries,
                       int max_entries);