#include "humireader.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include <functional>


void showHelp() {
    fprintf(stderr, "# Parameters");
    fprintf(stderr, "# [--once] [--help] [--(a|i)(t|h)min] [--(a|i)(t|h)max]  <dev-path>\n");
    fprintf(stderr, "# --once: run once then exit, other read/output continously \n");
    fprintf(stderr, "# -- help: this\n");
    fprintf(stderr, "# devPath: e.g. /dev/ttyUSB0");
    fprintf(stderr, "# other parameters for emitting warnings when limits exceeded like:\n");
    fprintf(stderr, "# (a|i)  sensor A or sensor I of Humimaster\n");
    fprintf(stderr, "# (t|h)  limit for temp or humidty\n");
    fprintf(stderr, "# min or max temp or humidity (degree C or 0-100 in percent)\n");
    fprintf(stderr, "# On limit exceed output will by like TR_SENS_A_TEMPFAIL=1\n");    
}

int main(int argc, char **argv)
{
    std::string devPath;
    
    // Min max limit for sensor a / i, humidity / temp
    int ahmin=0;
    int ahmax=100;
    int atmin=-9999;
    int atmax=9999;
    int ihmin=0;
    int ihmax=100;
    int itmin=-999;
    int itmax=999;
    bool runOnce = false;
    
    std::string prmMask = std::string("--abcde=");
    
    std::cout << "# TempReader 0.1 (c) 2018 MH" << std::endl;
    std::cout << "# (reads temp+humidty from 'HumiMaster')" << std::endl;
    
    try {
        for(int i=1; i < argc; i++) {
            auto s = std::string{argv[i]};            
            auto p = s.substr(0, prmMask.size());
            auto limitNam = std::string();            
            int *currLimit = nullptr;
            
            //fprintf(stderr, "%i %i %s\n",i, argc, s.c_str());
            
            if (p.compare("--ahmin=") == 0) {
                limitNam = "TR_A_HUMI_MIN";
                currLimit = &ahmin;            
            }            
            else if (p.compare("--ahmax=") == 0) {
                limitNam = "TR_A_HUMI_MAX";
                currLimit = &ahmax;            
            }   
            else if (p.compare("--atmin=") == 0) {
                limitNam = "TR_A_TEMP_MIN";
                currLimit = &atmin;            
            }            
            else if (p.compare("--atmax=") == 0) {
                limitNam = "TR_A_TEMP_MAX";
                currLimit = &atmax;            
            }   
            else if (p.compare("--ihmin=") == 0) {
                limitNam = "TR_I_HUMI_MIN";
                currLimit = &ihmin;            
            }            
            else if (p.compare("--ihmax=") == 0) {
                limitNam = "TR_I_HUMI_MAX";
                currLimit = &ihmax;            
            }   
            else if (p.compare("--itmin=") == 0) {
                limitNam = "TR_I_TEMP_MIN";
                currLimit = &itmin;            
            }            
            else if (p.compare("--itmax=") == 0) {
                limitNam = "TR_I_TEMP_MAX";
                currLimit = &itmax;            
            }   
             else if (s.compare("--once") == 0) {
                runOnce = true;                
            }
            else if (s.compare("--help") == 0) {
                showHelp();
                return 0;            
            }
            else if (i == argc -1) {
                devPath = s;
            }
            
            if (currLimit != nullptr) {
                *currLimit=strtol(&s.c_str()[prmMask.size()], nullptr, 10);
                std::cout << limitNam << "=" << *currLimit << std::endl;
            }
        }
        
        if (argc == 0 || devPath.size() == 0) {
            showHelp();
            return 1;
        }
            
        HumiReader reader(devPath);
        reader.setCallback([&, runOnce](const HumiResult& res) -> bool { 
            fprintf(stdout, "# ------------\n");                                    
            fprintf(stdout, "TR_NEW_CYCLE=1\n");                                    
            fprintf(stdout, "TR_SENS_A_TEMP=%.2i\n", res.sensorATemp);
            fprintf(stdout, "TR_SENS_A_TEMP_DISP=\"%+.3i°C\"\n", res.sensorATemp);
            fprintf(stdout, "TR_SENS_A_HUMI=%i\n", res.sensorARelHumi);
            fprintf(stdout, "TR_SENS_A_HUMI_DISP=\"%.3i%%rH\"\n", res.sensorARelHumi);            
            fprintf(stdout, "TR_SENS_I_TEMP=%.2i\n", res.sensorITemp);
            fprintf(stdout, "TR_SENS_I_TEMP_DISP=\"%+.3i°C\"\n", res.sensorITemp);
            fprintf(stdout, "TR_SENS_I_HUMI=%i\n", res.sensorIRelHumi);
            fprintf(stdout, "TR_SENS_I_HUMI_DISP=\"%.3i%%rH\"\n", res.sensorIRelHumi);            
            //fprintf(stdout, "A: %+.3iC°, %.3i%%rH | I: %+.3iC°, %.3i%%rH\n", res.sensorATemp, res.sensorARelHumi, res.sensorITemp, res.sensorIRelHumi);
            
            int attrip = (res.sensorATemp < atmin || res.sensorATemp > atmax) ? 1 : 0;
            int ahtrip = (res.sensorARelHumi < ahmin || res.sensorARelHumi > ahmax) ? 1 : 0;
            int ittrip = (res.sensorITemp < itmin || res.sensorITemp > itmax) ? 1 : 0;
            int ihtrip = (res.sensorIRelHumi < ihmin || res.sensorIRelHumi > ihmax) ? 1 : 0;
            int trip = attrip || ahtrip || ittrip || ihtrip ? 1 : 0;
            
            fprintf(stdout, "TR_SENS_A_TEMP_TRIP=%i\n", attrip);                                    
            fprintf(stdout, "TR_SENS_A_HUMI_TRIP=%i\n", ahtrip);                                    
            fprintf(stdout, "TR_SENS_I_TEMP_TRIP=%i\n", ittrip);                                    
            fprintf(stdout, "TR_SENS_I_HUMI_TRIP=%i\n", ihtrip);                                    
            fprintf(stdout, "TR_TRIP=%i\n",trip);                                    
            
            //fprintf(stdout, "\n", res.sensorITemp, res.sensorIRelHumi);
            return !runOnce;
        });        
        reader.run();
        return 0;
    }
    catch (const std::exception& e) {
        std::cerr << "Error executing " << e.what();
        return 1;
    }
}