#!/usr/bin/env python
# encoding: utf-8

import os
import sys
import optparse
import csv
from path import path

from .texenv import texenv

import math as m
import random as rd
from pymath import Expression
from pymath import Polynom
from pymath import Equation
from pymath.calculus.polynomDeg2 import Polynom_deg2
from pymath import Fraction 
from pymath import random_str 
from pymath import random_pythagore
from pymath import Dataset
from pymath import WeightedDataset


export_dict = {}
export_dict.update(m.__dict__)
export_dict.update(rd.__dict__)
export_dict.update(__builtins__)
export_dict.update({"Expression":Expression,\
        "Polynom":Polynom,\
        "Polynom_deg2":Polynom_deg2,\
        "Fraction":Fraction,\
        "Equation":Equation,\
        "random_str": random_str,\
        "random_pythagore":random_pythagore,\
        "Dataset": Dataset, \
        "WeightedDataset": WeightedDataset,\
        })

def produce_and_compile(options):
    #template = report_renderer.get_template(options.template)
    template = texenv.get_template(options.template)

    # Saving place
    cwd = path("./").abspath()

    template_file =  path(options.template)

    output =  path(template_file.dirname()) / path(template_file.name[3:])

    if not options.csv_file:
        # {:02:0f} means that we want a 2 digits number
        list_infos = [{"num": "{:02.0f}".format(i+1)} for i in range(options.num_subj)]
    else:
        with open(options.csv_file, 'r', encoding = 'ISO-8859-1') as f:
            list_infos = list(csv.DictReader(f, delimiter=";"))
            for (i,a) in enumerate(list_infos):
                a['num'] = "{:02.0f}".format(i+1)

    if output.dirname() != "":
        output.dirname().cd()

    output = output.name

    if options.only_corr:
        options.corr = True
    else:
        tmp_pdf = []
        for infos in list_infos:
            #print("_______" + str(infos))
            dest = path(str(infos['num']) + output)
            tmp_pdf.append(dest.namebase + ".pdf")
            with open( dest, 'w') as f:
                f.write(template.render(  infos = infos, **export_dict ))

            if not options.no_compil:
                os.system("pdflatex " + dest)

        if not options.dirty:
            os.system("rm *.aux *.log")

        if not options.no_join:
            print(path("./").abspath())
            print("pdfjam "+ " ".join(tmp_pdf) + " -o all" + path(output).namebase + ".pdf")
            os.system("pdfjam "+ " ".join(tmp_pdf) + " -o all" + path(output).namebase + ".pdf")
            #os.system("pdfjam *.pdf -o all" + path(output).namebase + ".pdf")
            print("rm " + " ".join(tmp_pdf))
            os.system("rm " + " ".join(tmp_pdf))

    if options.corr:
        find_subj_tex_files = "find ./ -iname '[0-9]*_*.tex' " 
        os.system( find_subj_tex_files + " -exec sed -i 's/%\\\\printanswers/\\\\printanswers/g' {} \\;")

        if not options.no_compil:
            os.system(find_subj_tex_files + " -exec pdflatex {} \\;")
            os.system( find_subj_tex_files + " -exec sed -i 's/\\\\printanswers/%\\\\printanswers/g' {} \\;")

        if not options.dirty:
            os.system("rm *.aux *.log")

        if not options.no_join:
            print(path("./").abspath())
            print("pdfjam `find ./ -iname '[0-9]*.pdf'` -o corr" + path(output).namebase + ".pdf")
            os.system("pdfjam `find ./ -iname '[0-9]*.pdf'` -o corr" + path(output).namebase + ".pdf")
            #os.system("pdfjam *.pdf -o all" + path(output).namebase + ".pdf")
            print("find ./ -iname '[0-9]*.pdf' -exec rm -f {} \;")
            os.system("find ./ -iname '[0-9]*.pdf' -exec rm -f {} \;")

    cwd.cd()

def main():
    parser = optparse.OptionParser()
    parser.add_option("-t","--template",action="store",type="string",dest="template", help="File with the template. The name should have the following form tpl_... .")
    parser.add_option("-C","--csv", action="store", type="string", dest="csv_file", help="Filename of the csv file where informations on subjects are stored")
    parser.add_option("-N","--number_subjects", action="store",type="int", dest="num_subj", default = 1, help="The number of subjects to make")
    parser.add_option("-d","--dirty", action="store_true", dest="dirty", help="Do not clean after compilation")
    parser.add_option("-n","--no-compile", action="store_true", dest="no_compil", help="Do not compile source code")
    parser.add_option("-j","--no-join", action="store_true", dest="no_join", help="Do not join pdf and clean single pdf")
    parser.add_option("-o","--only-corr", action="store_true",dest="only_corr", help="Create and compile only correction from existing subjects")
    parser.add_option("-c","--corr", action="store_true",dest="corr", help="Create and compile correction while making subjects")


    (options, args) = parser.parse_args()

    if not options.template:
        print("I need a template!")
        sys.exit(0)

    produce_and_compile(options)

if __name__ == '__main__':
    main()



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