#include "utilsfunc.h"
#include <unistd.h>
#include <memory>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <fstream>
using namespace std;

#define VMRSS_LINE 21
#define VMSIZE_LINE 17
#define PROCESS_ITEM 29
#define LUT_COLOR_BLACK_PATH "/usr/local/huago/lut_0.bmp"
#define LUT_COLOR_WHITE_PATH "/usr/local/huago/lut_1.bmp"
#define LUT_GRAY_BLACK_PATH "/usr/local/huago/lut_2.bmp"
#define LUT_GRAY_WHITE_PATH "/usr/local/huago/lut_3.bmp"
#define LUT_COLOR_LUT_PATH "/usr/local/huago/color_lut.bmp"
#define LUT_GRAY_LUT_PATH "/usr/local/huago/gray_lut.bmp"

float curve_coffes[2][3][3] = {
  {
    {-6e-5, 0.9928, 0.289},
    {4e-5, 1.0045, -0.0338},
    {3e-5, 1.0028, -0.2547}
  },
  {
    {0.00025215105482649316 , 0.9162675232424231 , 2.2064225897716527},
    {-6.242394612635725e-05 , 1.0212590446315797 , -0.7470581333124157},
    {-0.0002324551311266845 , 1.072239346671703 , -1.7099159032971474}
  }
};

void SaveScaninfo(const ScannerScanInfo &info)
{
    js_config.SaveScanInfo(info);
}

ScannerScanInfo GetScanInfoFromJson()
{
    return js_config.GetScanInfo();
}

void writesyslog(int loglevel, std::string loginfo)
{
#ifdef ENLOG_SYSLOG
    openlog("scanservice", LOG_CONS | LOG_PID, LOG_USER);
    syslog(loglevel, "%s \n", loginfo.c_str());
    closelog();
#endif
}

unsigned int get_proc_virtualmem(unsigned int pid)
{
    char file_name[64] = {0};
    FILE *fd;
    char line_buff[512] = {0};
    sprintf(file_name, "/proc/%d/status", pid);

    fd = fopen(file_name, "r");
    if (nullptr == fd)
    {
        return 0;
    }

    char name[64];
    int vmsize;
    for (int i = 0; i < VMSIZE_LINE - 1; i++)
    {
        fgets(line_buff, sizeof(line_buff), fd);
    }

    fgets(line_buff, sizeof(line_buff), fd);
    sscanf(line_buff, "%s %d", name, &vmsize);
    fclose(fd);

    return vmsize;
}

unsigned int get_proc_mem(unsigned int pid)
{
    char file_name[64] = {0};
    FILE *fd;
    char line_buff[512] = {0};
    sprintf(file_name, "/proc/%d/status", pid);

    fd = fopen(file_name, "r");
    if (nullptr == fd)
    {
        return 0;
    }

    char name[64];
    int vmrss;
    for (int i = 0; i < VMRSS_LINE - 1; i++)
    {
        fgets(line_buff, sizeof(line_buff), fd);
    }

    fgets(line_buff, sizeof(line_buff), fd);
    sscanf(line_buff, "%s %d", name, &vmrss);
    fclose(fd);

    return vmrss;
}

int get_total_mem()
{
    const char *file = "/proc/meminfo"; //文件名
    FILE *fd;                           //定义文件指针fd
    char line_buff[256] = {0};          //读取行的缓冲区
    fd = fopen(file, "r");              //以R读的方式打开文件再赋给指针fd

    //获取memtotal:总内存占用大小
    int i;
    char name[32];                                       //存放项目名称
    int memtotal;                                        //存放内存峰值大小
    char *ret = fgets(line_buff, sizeof(line_buff), fd); //读取memtotal这一行的数据,memtotal在第1行
    sscanf(line_buff, "%s %d", name, &memtotal);
    //fprintf(stderr, "====%s：%d====\n", name, memtotal);
    fclose(fd); //关闭文件fd
    return memtotal;
}

std::string getmeminfo()
{
    pid_t pid = getpid();
    unsigned int virmem = get_proc_virtualmem(pid);
    unsigned int procmem = get_proc_mem(pid);
    int totalmem = get_total_mem();
    std::string strinfo = "Scanservice current memory info,virtualmem= " + to_string(virmem) + " KB procmem = " + to_string(procmem) + " KB  of " + to_string(totalmem) + " KB total";
    return strinfo;
}

void start_enter_lowpwoer()
{
#ifdef ENABLE_LOWPOWERMODE
    write_sleep_fifo(true);
#endif
}

void stop_countdown()
{
#ifdef ENABLE_LOWPOWERMODE
    write_sleep_fifo(false);
#endif
}


int creat_sleep_fifo()
{
    if (access("/home/root/dev/", F_OK) == -1)
    {
        system("mkdir /home/root/dev/");
    }
    int ret =  mkfifo("/home/root/dev/sleep", 0666);
    if (!ret)
    {
        perror("mkfifo");  
    }

    sleep_fd_ = open("/home/root/dev/sleep", O_WRONLY); 
    if(sleep_fd_ < 0)  
    {  
        perror("open fifo fail");  
    }
    return sleep_fd_;
}

int write_sleep_fifo(int status)
{
    if(sleep_fd_ < 0)  
    {  
        perror("write_sleep_fifo open fifo fail");  
        return sleep_fd_;
    }
    
    char buffer[12];
    sprintf(buffer,"%d",status);
    //printf("status:%d\r\n",status);
    int ret = write(sleep_fd_,buffer,strlen(buffer));
    
    return ret;
}

//睡眠状态 //更新状态 等等
int get_devs_status(std::string filename)
{
    std::ifstream in;
    in.open(filename.c_str(),ios::in);
    if (!in.is_open())
    {
       return -1;
    }
    
    char buf[1024] = { 0 };
	in >> buf;
    return atoi(buf);
}