#pragma once
/*
 * AVR Compatibility Layer for PC compilation
 * Provides AVR types, macros, and functions for x86/x64 hosts
 */

/* Prevent AVR-specific headers from being included */
#define _AVR_PGMSPACE_H_ 1
#define _AVR_IO_H_ 1
#define _AVR_WDT_H_ 1
#define _AVR_SLEEP_H_ 1

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <math.h>

/* AVR type definitions - on PC, these are already correct */
/* No need to redefine built-in types */

/* PROGMEM/Flash support - on PC everything is in RAM */
#define PROGMEM
#define __flash
#define PSTR(s) (s)
#define strcpy_P strcpy
#define strcat_P strcat
/* xprintf functions are implemented in gpx_wrapper.c and nmea_wrapper.c */

/* FatFS types stub */
typedef struct {
    FILE *fp;
    char filename[256];
} FIL;

typedef uint32_t DWORD;
typedef unsigned int UINT;

/* FatFS function stubs */
#define FA_WRITE 0x02
#define FA_OPEN_ALWAYS 0x10

static inline unsigned char f_open(FIL *file, const char *path, unsigned char mode) {
    (void)mode;
    file->fp = fopen(path, "w");
    if (file->fp) {
        strncpy(file->filename, path, sizeof(file->filename) - 1);
        return 0;
    }
    return 1;
}

static inline unsigned char f_write(FIL *file, const void *buf, unsigned int len, unsigned int *written) {
    if (!file->fp) return 1;
    *written = fwrite(buf, 1, len, file->fp);
    return (*written == len) ? 0 : 1;
}

static inline unsigned char f_close(FIL *file) {
    if (file->fp) {
        fclose(file->fp);
        file->fp = NULL;
        return 0;
    }
    return 1;
}

/* Math functions */
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif

/* AVR interrupt stubs */
#define cli()
#define sei()

/* System structure - simplified for PC testing */
struct config_s {
    unsigned char skip_points;
    unsigned char auto_pause_dist;
};

struct system_s {
    struct config_s conf;
    unsigned long int distance;
    unsigned long int elevation_gain;
    unsigned long int elevation_loss;
    time_t time_start;
    time_t current_pause_start;
    time_t pause_time;
    unsigned tracking_paused:1;
    unsigned tracking_auto_paused:1;
};

struct location_s {
    float lon;
    float lat;
    float alt;
    time_t time;
};

extern volatile struct system_s System;
extern struct location_s location;
extern time_t utc;

/* Settings flags */
#define CONFFLAG_DISABLE_FILTERS 0x01

extern unsigned char config_flags;

static inline unsigned char get_flag(unsigned char flag) {
    return (config_flags & flag) ? 1 : 0;
}

/* Time functions */
char *get_iso_time(time_t time, unsigned char local);
void iso_time_to_filename(char *time);