/**
 * @file lv_port_init.c
 *
 */

#include <stdio.h>
#include <sys/time.h>
#include <unistd.h>

#include <lvgl/lvgl.h>
#include <lvgl/lv_conf.h>

#include "lv_port_disp.h"
#include "lv_port_indev.h"

/* 0, 90, 180, 270 */
static int g_indev_rotation = 0;
/* 0, 90, 180, 270 */
static int g_disp_rotation = 0;

static int log_level = LV_LOG_LEVEL_WARN;
static void print_cb(lv_log_level_t level, const char *buf)
{
    if (level >= log_level)
        printf("%s", buf);
}

static uint32_t lv_systick(void)
{
    static uint64_t start_ms = 0;
    if (start_ms == 0)
    {
        struct timeval tv_start;
        gettimeofday(&tv_start, NULL);
        start_ms = (tv_start.tv_sec * 1000000 + tv_start.tv_usec) / 1000;
    }

    struct timeval tv_now;
    gettimeofday(&tv_now, NULL);
    uint64_t now_ms;
    now_ms = (tv_now.tv_sec * 1000000 + tv_now.tv_usec) / 1000;

    uint32_t time_ms = now_ms - start_ms;
    return time_ms;
}

static void lv_sysdelay(uint32_t ms)
{
    usleep(ms * 1000);
}

void lv_port_init(void)
{
    const char *buf;

    lv_init();

    buf = getenv("LV_DEBUG");
    if (buf)
        log_level = buf[0] - '0';
    lv_log_register_print_cb(print_cb);
    lv_tick_set_cb(lv_systick);
    lv_delay_set_cb(lv_sysdelay);

    lv_port_disp_init(0, 0, g_disp_rotation);
    lv_port_indev_init(g_indev_rotation);
}