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#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <condition_variable>
#include <chrono>
#include <functional>
#include <mutex>
#include <thread>
#include <vector>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "utils.hpp"
#include "sensor_als.hpp"
#include "brightness_ctrl.hpp"
SensorALS als;
int als_id;
filesystem::path fifo_path;
BrightnessControl lcd,kbd;
FILE *fifo_f;
void als_callback(SensorBase* _s)
{
SensorALS* s=(SensorALS*)_s;
float val=s->get_value();
lcd.on_sensor_report(val);
kbd.on_sensor_report(val);
}
void load_config()
{
fifo_path="/tmp/lightsd.cmd.fifo";
FILE* cfgf;
cfgf=fopen("/etc/lightsd.conf","r");
if(!cfgf)
cfgf=fopen("lightsd.conf","r");
if(!cfgf){LOG('W',"Configuration file not found.",0);return;}
char* buf=new char[1024];
while(!feof(cfgf))
{
fgets(buf,1024,cfgf);
if(buf[0]=='#')continue;
std::string sb=trim(buf);
std::vector<std::string> sv;
split(sb,'=',sv);
if(sv.size()!=2)continue;
if(sv[0]=="lcd_backlight_control")lcd.set_path(sv[1]);
if(sv[0]=="kbd_backlight_control")kbd.set_path(sv[1]);
if(sv[0]=="lcd_backlight_thresholds")
{
std::vector<std::string> vals;
split(sv[1],',',vals);
std::vector<int> t;
for(auto&i:vals)t.push_back(atoi(i.c_str()));
lcd.set_thresh(t);
}
if(sv[0]=="lcd_backlight_values")
{
std::vector<std::string> vals;
split(sv[1],',',vals);
std::vector<int> t;
for(auto&i:vals)t.push_back(atoi(i.c_str()));
lcd.set_value(t);
}
if(sv[0]=="lcd_backlight_control_delay")lcd.set_delay(atoi(sv[1].c_str()));
if(sv[0]=="lcd_backlight_trigger_range")lcd.set_trigrange(atoi(sv[1].c_str()));
if(sv[0]=="kbd_backlight_thresholds")
{
std::vector<std::string> vals;
split(sv[1],',',vals);
std::vector<int> t;
for(auto&i:vals)t.push_back(atoi(i.c_str()));
kbd.set_thresh(t);
}
if(sv[0]=="kbd_backlight_values")
{
std::vector<std::string> vals;
split(sv[1],',',vals);
std::vector<int> t;
for(auto&i:vals)t.push_back(atoi(i.c_str()));
kbd.set_value(t);
}
if(sv[0]=="kbd_backlight_control_delay")kbd.set_delay(atoi(sv[1].c_str()));
if(sv[0]=="kbd_backlight_trigger_range")kbd.set_trigrange(atoi(sv[1].c_str()));
if(sv[0]=="command_fifo_path")fifo_path=sv[1];
}
delete[] buf;
}
int get_gid(std::string group)
{
FILE* grpf=fopen("/etc/group","r");
char* buf=new char[1024];
while(!feof(grpf))
{
fgets(buf,1024,grpf);
std::vector<std::string> sv;
split(buf,':',sv);
if(sv[0]==group)
{
fclose(grpf);
delete[] buf;
return atoi(sv[2].c_str());
}
}
fclose(grpf);
delete[] buf;
return -1;
}
void setup_fifo()
{
if(!fifo_path.string().length())return;
unlink(fifo_path.c_str());
mkfifo(fifo_path.c_str(),0620);
chown(fifo_path.c_str(),0,get_gid("video"));
chmod(fifo_path.c_str(),0620);
}
void command_thread()
{
fifo_f=fopen(fifo_path.c_str(),"r");
char cmdbuf[256];
while(1)
{
fgets(cmdbuf,256,fifo_f);
printf("got command: ");
puts(trim(cmdbuf).c_str());
std::vector<std::string> cav;
split(trim(cmdbuf),' ',cav);
if(cav.size()>=1)
{
if(cav[0]=="u")if(cav.size()>1)lcd.set_offset(1,atoi(cav[1].c_str()));
if(cav[0]=="d")if(cav.size()>1)lcd.set_offset(-1,atoi(cav[1].c_str()));
if(cav[0]=="s")if(cav.size()>1)lcd.set_offset(0,atoi(cav[1].c_str()));
if(cav[0]=="r")lcd.set_offset(0,0);
}
fclose(fifo_f);
fifo_f=fopen(fifo_path.c_str(),"r");
}
}
void sigterm_handler(int)
{
exit(0);
}
int main()
{
signal(SIGTERM,sigterm_handler);
als_id=SensorBase::detect_sensor("als");
if(!~als_id)return puts("No ALS found!"),1;
als.init(als_id,"in_intensity");
als.set_reader_callback(als_callback);
float init_val=als.get_value();
printf("initial value: %f lx\n",init_val);
load_config();
setup_fifo();
lcd.init(init_val,&als);
kbd.init(init_val,&als);
std::thread lcd_thread(&BrightnessControl::worker,std::ref(lcd));
std::thread kbd_thread(&BrightnessControl::worker,std::ref(kbd));
std::thread cmd_thread(command_thread);
als.worker();
return 0;
}
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