#!/usr/bin/env python3
# -*- coding: utf_8 -*-

"""
spawned from TSF file write
Aim is to get serial ascii Baro data into tsf format


"""


# Only works with python 3

import serial
import os.path 

import time
import datetime 





# PORT name -- Change as needed for your host.
#PORT_NAME = '/dev/ttyACM0'
#PORT_NAME = '/dev/ttyUSB0'
PORT_NAME = 'COM4'
BAUD_RATE ='9600'



serialPort = serial.Serial(
    port=PORT_NAME, baudrate=BAUD_RATE, bytesize=8, timeout=2, stopbits=serial.STOPBITS_ONE
)
#TSF file name, header, UT etc 

def LOG_file_name():
    # uses the same utc.now from timing loop
    todayUTyear=myut.year
    todayUTmonth=myut.month
    todayUTday=myut.day
    
    logFileName =("%4.2d%2.2d%2.2d%s") % (todayUTyear,todayUTmonth,todayUTday, "_baro.tsf")
    #print(logFileName)
    return (logFileName)

def UT_string():
    myut=datetime.datetime.utcnow()   # uses the same utc.now from timing loop
    todayUTyear=myut.year
    todayUTmonth=myut.month
    todayUTday=myut.day
    todayUThour=myut.hour
    todayUTminute=myut.minute
    todayUTsecond=myut.second
    myutstring="%4.2d %2.2d %2.2d %2.2d %2.2d %2.2d   " % ( todayUTyear,todayUTmonth,todayUTday,todayUThour,todayUTminute,todayUTsecond)
    #print(myutstring)
    return (myutstring)

def createHeader():    
    file_exists = os.path.exists(logFileName)
    # print(file_exists)
    # if it doesnt, open a file and write header
    if file_exists == False:
        myfile1 = open(logFileName, 'a')      
        myfile1.write("[TSF-file] v01.0\n")
        myfile1.write("\n")
        myfile1.write("\n")
        myfile1.write("[UNDETVAL] 99999\n")
        myfile1.write("\n")
        myfile1.write("[TIMEFORMAT] DATETIME\n")
        myfile1.write("\n")
        myfile1.write("[INCREMENT] 1\n")       #1 seconds
        myfile1.write("\n")
        myfile1.write("[CHANNELS]\n")
        myfile1.write(" South Aust:TPSO:barometer\n")
        myfile1.write(" South Aust:TPSO:temperature\n")
        myfile1.write(" South Aust:TPSO:humidity\n")
        myfile1.write("\n")
        myfile1.write("[UNITS]\n")
        myfile1.write(" Pa\n")
        myfile1.write(" tC\n")
        myfile1.write(" %\n")
        myfile1.write("\n")
        myfile1.write("[COMMENT]\n")
        myfile1.write("\n")
        myfile1.write("[DATA]\n")
            
        # data in format date,year, ,month, ,day, ,hh, ,mm, ,ss, data(nT) :-  # 2022 06 03 00 00 00   21.4 47.5
        # close the log file
        myfile1.close()
        print("created ",logFileName)
        return
    
serialString = ""  # Used to hold data coming over UART
while 1:
    # Wait until there is data waiting in the serial buffer
    if serialPort.in_waiting > 0:

        # Read data out of the buffer until a carraige return / new line is found
        serialString = serialPort.readline()
        myut=datetime.datetime.utcnow() 
        # Print the contents of the serial data
        try:
           
            
            logFileName = LOG_file_name()   # get a file name for 'today'
            file_exists = os.path.exists(logFileName)
            # print(file_exists)
            # if it doesnt, open a file and write header
            if file_exists == False:
                createHeader()       
            myBaroStr=  serialString.decode("Ascii")
            myBaroStr=myBaroStr.rstrip()
            ##rstrip() removes all white space at end of string (crlf).. 
            #print(UT_string(),myBaroStr.rstrip())
            print(UT_string(),myBaroStr)
            
            myfile1 = open(logFileName,'a')
            
            myfile1.write(UT_string())      #.write only has one assignment, so the need to write each string
            #myfile1.write(myBaroStr.rstrip())       #rstrip() removes all white space at end of string (crlf)..                       
            myfile1.write(myBaroStr)
            myfile1.write("\n")

            myfile1.close()
            
            #myut=datetime.datetime.utcnow()     # 'MASTER' get time, used in UT_string() and LOG_file_name()
            #print(serialString.decode("Ascii"))
            #print(UT_string(),serialString.decode("Ascii"))
            #myut=datetime.datetime.utcnow()     # 'MASTER' get time, used in UT_string() and LOG_file_name()
            #print(myut)       # to test how often it goes through loop
        except:
            pass