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

/* 硬件类型 */
#define MODEL			"SG368Z(RK3568) HDMI+VGA (Linux)"

/* 固件版本 */
#define FIRMWARE        "V1.00"

/* 固件版本 */
#define DATE            "20240321-2343"

void get_version_process(void);

static void exec(char* data, char* command, char* filter);

int main(int argc, char *argv[])
{
    if(argc == 1)
    {
        printf("Usage:\r\n");
        printf("hvgo:          show this usage\r\n");
        printf("hvgo version:  get version\r\n");
        printf("\r\n");
        
        return 0;
    }

    if(strcmp(argv[1], "version") == 0)
        get_version_process();

    return 0;
}

void get_version_process(void)
{
    char os_data[1024] = {0}, kernel_data[1024] = {0};
    exec(os_data, "cat /etc/issue", "\\n \\l");
    exec(kernel_data, "cat /proc/version", "");
    
    /* 系统版本 */
    printf("OS:       %s\r\n", os_data);
    /* 硬件类型 */
    printf("MODEL:    %s\r\n", MODEL);
    /* 固件版本 */
    printf("FIRMWARE: %s\r\n", FIRMWARE);
    /* 固件生成日期 */
    printf("DATE:     %s\r\n", DATE);
    /* 系统内核版本信息 */
    printf("KERNEL:   %s\r\n", kernel_data);
    
    printf("\r\n");
}

void replace(char *str, char *orig, char *rep) 
{
    if(strlen(orig) > 0)
    {
        static char buffer[1024];
        char *p;
 
        while (p = strstr(str, orig)) 
        {
            memcpy(buffer, str, p-str);
            buffer[p-str] = '\0';
            strcat(buffer, rep);
            strcat(buffer, p+strlen(orig));
            strcpy(str, buffer);
        }
    }
}

void replace_char(char *str, char find, char replace)
{
    for (int i = 0; str[i]; i++){
        if (str[i] == find){
            str[i] = replace;
        }
    }
}

static void exec(char* data, char* command, char* filter)
{
    FILE *fp;
    char buffer[1024];

    fp = popen(command, "r"); // 打开 messages 日志文件并只显示最后一行
    fgets(buffer, sizeof(buffer), fp);

    strcpy(data, buffer);
    
    pclose(fp);

    replace(data, filter, "");
    replace_char(data, '\n', ' ');
    replace_char(data, '\r', ' ');
}