"""
Created on Tue May  5 15:37:56 2020

@author: nits
connection:
        green and white = B
        yellow and brown = A

"""


import windsensor
from jsonwind import json_wma,json_debug,json_concat
from json import loads
import sighand
import mqtt_comm
import time
import avg_values
import configfile
import db_handle
from threading import Timer
from os import listdir
from os.path import isfile, join
from os import remove
import threading
from threadf import Publisher
import threadf

threadf.store_count=0

def main():
    #extra threads and parse file
    conf = configfile.Configuration()
    
    #initialization of variables and objects
    
    
    signal_handler=sighand.SignalHandler()
    wind = windsensor.WindSensor()
    speed_mean= avg_values.AverageValue()
    
#    topic = conf.topic
    days=conf.days_archive
    topic_debug = conf.topic_debug
    debug_mode = conf.debug_mode
    qos_mqtt=conf.qos
    start = time.time()
    numberOfHosts=conf.numberOfHosts
    numberOfPublishers=conf.numberOfPublishers
    
    #check the hosts and publisher objects
    
    print("Nr of hosts: ", numberOfHosts)
    hosts = []
    print("Nr of publishers: ", numberOfPublishers)
    publishers = []

    for i in range(1, numberOfHosts+1):
        name = "Host"+str(i)
        port = conf.config[name].getint('port')
        ident = conf.config[name].get('client_name')
        connect = conf.config[name].getboolean('connect')
        host_name = conf.config[name].get('name')
        
        host = mqtt_comm.MQTT_Client(host_name, ident, port,connect)
        hosts.append(host)
        
    for host in hosts:
        if(host.connect):
            host.client_connect()
            host.client.loop_start()
    #create the publisher objects and link them to the hosts
    for i in range(1, numberOfPublishers+1):
        name = "Publisher"+str(i)
        
        pubflag=conf.config[name].getboolean('pubflag')
        arcflag=conf.config[name].getboolean('arc_flag')
        daemonTh=conf.config[name].getboolean('daemonTh')
        st_flag=conf.config[name].getboolean('store_flag')
        topic = conf.config[name].get('topic')
        host_n=conf.config[name].getint('host_n')
        thName=conf.config[name].get('threadName')
        source=conf.config[name].get('source')
        order=conf.config[name].get('order')
        n=conf.config[name].getint('n')
        print("publisher",i,"daemon =",daemonTh,"archive=",arcflag,"publish=",pubflag)
        Publisher_n = threadf.Publisher(pubflag,arcflag,topic,hosts[host_n-1],qos_mqtt,daemonTh,thName,source,st_flag,order,n)
        publishers.append(Publisher_n)
        
        
        
    #connect to SQL
    while True:
        try:
            sqinit=db_handle.Sqlite3_DB();
            break;
        except db_handle.sqlite3.Error as er:
            print('SQLite error: %s' % (' '.join(er.args)))
            print("Exception class is: ", er.__class__)
            time.sleep(3)
    threadf.store_count=sqinit.sql_count();
    print("Archive has INITIALLY ",threadf.store_count," rows")
    
    time_json=""
    while (True):
       # if(threadf.quit==False):    
        if(time.time() - start > 1.0 or ((time_json)is "")): #Wait 1 second to run loop, if sensor comm fails, will try faster so data won't be lost
            if(threadf.lock.locked()):
                threadf.lock.release()#release lock to run the main thread
                #print("Lock released for running the main routines")
            threadf.lock.acquire() 
            start = time.time()
           
            #load data from sensors and calculate mean
            
            time_act = wind.readDateTime()
            windspeed_act = wind.readWindSpeed()
            wind_direct= wind.readWindDirection()
            wind_temp=wind.readTemp()
            
            speed_mean.insert_value_list2(windspeed_act)
            speed_mean.insert_value_list10(windspeed_act)
            speed_m2=speed_mean.get_m2()
            speed_max2=speed_mean.get_max2()
            speed_m10=speed_mean.get_m10()
            speed_max10=speed_mean.get_max10()
            
            rm_number=1800    #number of removed lines when requested, 1800 = half an hour
            if(threadf.store_count>(days*86400+rm_number)):#number of samples per day(size in lines)
                startc = time.time()
                
                print('Too many files on the archive, removing older than',days,'days size')
                sqinit.remove_oldests_from_db(rm_number);#clean DB if DB is too large
                threadf.store_count=threadf.store_count-rm_number;
                timec=time.time()-startc
                print("time taken to remove",rm_number," lines from the old data was: ",timec)#computes and displays the time taken 
            

    
            json_pack = json_wma(time_act,windspeed_act,wind_direct,wind_temp,speed_m2,speed_max2,speed_m10,speed_max10)#generate json pack with values
            time_json=loads(json_pack)["time"];
            if (time_json is not ""):
                publishers[0].write_line_db_sub(json_pack)#write line to db using the first publisher object
                
            for pub in publishers:
                pub.publish(json_concat(json_pack,pub.topic))
            #write line to db
       


                    
            #debug mode
            if (debug_mode ==1):
                errorcounter = wind.errorcounter
                kompasswinkel_act = wind.readCompassAngle()
                json_pack_debug = json_debug(time_act,windspeed_act,wind_direct,errorcounter,kompasswinkel_act) #print information on console
                print(json_pack_debug)
            
            if(threadf.lock.locked()):#release thread lock
                threadf.lock.release()
            #check if sensor was read, in case not, it will skip the sleep in order to get the reading faster
            
          #  print("Cycle duration:",time.time()-start,"s")# print time
            try:
                if(time_json is not ""):
                    time.sleep(1-(time.time()-start)) #treats exception if time bigger than 1.0s
            except:
                print("Cycle>1s lasted:",time.time()-start,"seconds")
                
       
if __name__ == "__main__":
    main()