#!/usr/bin/python3
 # coding: utf-8

import math
import json

from datetime import timedelta
from datetime import date
import locale
import os
from tracemalloc import start

from umlauts import escape_german_umlauts
from dates import get_special_text 
from yearly_view import tex_write_year_overview 

start_year = 2022
months_start = 1
months_end = 6
add_clock = False

def compile_tex(filename):
    cmd = 'pdflatex ' + filename

    os.system(cmd)
    #os.remove(os.path(filename).stem + ".aux")
    #os.remove(os.path(filename).stem + ".log")


def main():
    main_tex = "calender.tex"
    # german
    locale.setlocale(locale.LC_TIME, "de_DE.UTF-8")

    fd = open(main_tex, "w")
    tex_write_header(fd)

    tex_write_year_overview(fd, start_year)

    tex_write_weekly(fd, start_year, add_clock)

    tex_write_footer(fd)

    fd.close()
    compile_tex(main_tex)



def tex_write_header(fd):
    start_fd = open("./vorlagen/week_2pages_start.tex", "r")
    for line in start_fd:
        fd.write(line)
    fd.write("\\begin{document}\n");
    return


def tex_write_footer(fd):
    fd.write("\\end{document}\n");
    return


def tex_write_weekly(fd, year, addclock):
    start_date = date(year, months_start, 1)
    end_date = date(year, months_end, 30)
    print_start_date = start_date - timedelta(days=start_date.weekday())
    print_end_date = end_date + timedelta(days=6 - end_date.weekday())

    print(print_start_date.isoformat())
    print(print_end_date.isoformat())

    fd.write("%%%%%%%%%%%%%%%%%%%%%%%%%%%\n");
    fd.write("% begin real calender \n");

    curr_date = print_start_date;

    print("year : " + str(curr_date.year))

    last_year= ""
    last_month= ""

    while True:
        if curr_date.weekday() == 0 or curr_date.weekday() == 3:
            # new year to setup
            if str(curr_date.year) != str(last_year):
                last_year= curr_date.year
                fd.write("\n\\renewcommand{\year}{"+ str(curr_date.year) +"}\n")

            # new month to setup
            if str(curr_date.month) != str(last_month):
                last_month= curr_date.month
                fd.write("\n\\renewcommand{\month}{" +  curr_date.strftime('%B')  + "}\n")

        # should give
        # \printweek{KW10}{1}{}{2}{}{3}{}

        weeknumber = curr_date.strftime("%V")
        daynumber = curr_date.strftime("%d")
        devider = "\\newline \n"
        special_text = get_special_text(curr_date, devider)

        # check for new week
        if curr_date.weekday() == 0: # monday
            fd.write("\\printweek")
            fd.write("{KW" + weeknumber + "}")

        if curr_date.weekday() == 3: # thursday is on second page
            fd.write("\n")
            fd.write("\\newpage\n")
            fd.write("\\printweekend")
            fd.write("{KW" + weeknumber + "}")


        # done for every day
        fd.write("{" + daynumber + "}")
        fd.write("{" + special_text + "}")

        if curr_date.weekday() == 6: # sunday is end of week so close it
            fd.write("\n")

        # end of calender
        if (print_end_date == curr_date):
            break

        #go to next day
        next_date = curr_date + timedelta(days=1)


        # use the new curr date and contiue
        curr_date = next_date

    # end of for each day

    fd.write('''
% end real calender
%%%%%%%%%%%%%%%%%%%%%%%%%%%
    ''')
    return


if __name__ == "__main__":
    main()