#!/usr/local/bin/perl
# The MIT License (MIT)
# 
# Copyright (c) 2011-2015 Ismaël Bouya http://www.normalesup.org/~bouya/
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.


# Feel like tipping/donating? https://www.immae.eu/licenses_and_tipping

use Switch;
use strict;

my @table = ();
my @interros = ();
my @tablequestion = ();
my @points = ();
my %corr_nom ;
my $interro_courante = 0;
my $fichier = "notes.dat";
if($#ARGV == 0) {
    $fichier = $ARGV[0];
}

sub ajout_interro {
    print "Nom de l'interrogation\n";
    my $interro = <STDIN>;
    chomp($interro);
    push(@interros,$interro);
    push(@tablequestion,[]);
    push(@table,[]);
    push(@points,[]);
    foreach my $key (keys %corr_nom) {
	push(@{ $corr_nom{$key} }, "Absent" );
    }
}

sub ajout_eleve {
    print "Nom\n";
    my $nom = <STDIN>;
    chomp($nom);
    print "Prénom\n";
    my $prenom = <STDIN>;
    chomp($prenom);
    $corr_nom{$prenom."\n".$nom} = ();
    for my $i (0..$#interros) {
	push(@{ $corr_nom{$prenom."\n".$nom} }, "Absent" );
    }
}

sub definir_exos {
    my $interro = shift;
    my $nbexos = "a";
    while($nbexos =~ m/\D/) {
	print "Nombre d'exercices\n";
	$nbexos = <STDIN>;
	chomp($nbexos);
	if($nbexos =~ /\D/) {
	    print "Mauvaise entrée\n";
	}
    }
    if($nbexos == "") {
	$nbexos = 0;
    }
    push(@{ $table[$interro] }, $nbexos);
    if($nbexos == 0) {
	push(@{ $tablequestion[$interro] }, "");    
    }
    for(my $i = 1; $i <= $nbexos; $i++) {
	my $questions = "a";
	while($questions =~ m/\D/) {
	    print "Nombre de questions dans l'exercice ",$i,"\n";
	    $questions = <STDIN>;
	    chomp($questions);
	    if($questions =~ /\D/) {
		print "Mauvaise entrée\n";
	    }
	}
	if($questions eq "") {
	    $questions = 0;
	}
	if($questions > 1) {
	    push(@{ $table[$interro] }, $questions);
	    for(my $j = 1; $j <= $questions; $j++) {
		my $ssquestions = "a";
		while($ssquestions =~ m/\D/) {
		    print "Nombre de sous-questions dans la question ",$i,".",$j,"\n";
		    $ssquestions = <STDIN>;
		    chomp($ssquestions);
		    if($ssquestions =~ /\D/) {
			print "Mauvaise entrée\n";
		    }
		}
		if($ssquestions eq "") {
		    $ssquestions = 0;
		}
		if($ssquestions > 1) {
		    push(@{ $table[$interro] }, $j.".".$ssquestions);
		    for(my $k = 1; $k<= $ssquestions; $k++) {
			push(@{ $tablequestion[$interro] }, $i.".".$j.".".$k);
		    }
		}
		else {
		    push(@{ $tablequestion[$interro] }, $i.".".$j);
		}
	    }
	}
	else {
	    push(@{ $tablequestion[$interro] }, $i);
	}
    }
}

sub entrer_notes {
    my $interro = shift;
    my $eleve = shift;
    my @boucle;
    if($eleve) {
	@boucle = ($eleve);
    }
    else {
	@boucle = sort sort_alpha keys %corr_nom;
    }
    foreach my $key (@boucle) {
	my $keyt = $key;
	$keyt =~ s/\n/ /;
	print $keyt." (mettre A pour indiquer une absence)\n";
	my @int;
	if(ref($corr_nom{$key}[$interro]) eq 'ARRAY') {
	    @int = @{$corr_nom{$key}[$interro]};
	}
	$corr_nom{$key}[$interro] = ();
	Interro: for my $i (0..$#{$tablequestion[$interro]}) {
	    my $pourcentage = "a";
	    my $def = 0;
	    if(!@int && $i == 0) {
		$def = "A";
	    }
	    if(scalar(@int) > 0) {
		$def = $int[$i];
	    }
	    while($pourcentage =~ m/\D/ || $pourcentage > 100) {
		if($tablequestion[$interro][$i] =~ m/\D/ ) {
		    print "Pourcentage pour la question ".$tablequestion[$interro][$i]." [".$def."]\n";
		}
		else {
		    print "Pourcentage pour l'exercice ".$tablequestion[$interro][$i]." [".$def."]\n";
		}
		$pourcentage = <STDIN>;
		chomp($pourcentage);
		if($pourcentage eq "") {
		    $pourcentage = $def;
		}
		if($pourcentage =~ m/^a$/i) {
		    $corr_nom{$key}[$interro] = "Absent";
		    last Interro;
		}
		if($pourcentage =~ /\D/ || $pourcentage > 100) {
		    print "Il faut un pourcentage entre 0 et 100\n";
		}
	    }
	    push(@{ $corr_nom{$key}[$interro] },$pourcentage);
	}
    }
}

sub entrer_bareme {
    my $interro = shift;
    foreach my $nomquestion ( @{ $tablequestion[$interro] } ) {
	my $point = "a";
	while($point =~ /[^\d\.]/) {
	    if($nomquestion =~ m/\D/ ) {
		print "Points pour la question ".$nomquestion."\n";
	    }
	    else {
		print "Points pour l'exercice ".$nomquestion."\n";
	    }
	    $point = <STDIN>;
	    chomp($point);
	    if($point =~ /[^\d\.]/) {
		print "Il faut donner un nombre de points\n";
	    }
	}
	if($point eq "") {
	    $point = 0;
	}
	push(@{ $points[$interro] },$point);
    }
}

sub sauver {
    open FILE, ">".$fichier;
    foreach my $i (0..$#table) {
	print FILE $interros[$i]."\n";
	print FILE "@{ $table[$i] }\n";
	print FILE "@{ $tablequestion[$i] }\n";
	print FILE "@{ $points[$i] }\n";
    }
    print FILE "\n";
    foreach my $ligne (keys(%corr_nom)) {
	print FILE $ligne."\n";
	foreach my $lig (@{ $corr_nom{$ligne} }) {
	    if($lig eq "Absent") {
		print FILE "! \n";
	    }
	    else {
		print FILE "* @$lig\n";
	    }
	}
    }
    print FILE "\n";
    close FILE;
}

sub charger {
    open FILE, $fichier;
    while(my $int = <FILE>) {
	if($int eq "\n") { last };
	chomp($int);
	push(@interros,$int);
	$int = <FILE>;
	chomp($int);
	push(@table, [ split(/ /, $int)  ] );
	$int = <FILE>;
	chomp($int);
	push(@tablequestion, [ split(/ /, $int)  ] );
	$int = <FILE>;
	chomp($int);
	push(@points, [ split(/ /, $int)  ] );

    }
    my $int = <FILE>;
    while(1) {
	if($int eq "\n") { last };
	my $intn = <FILE>;
	chomp($intn);
	my $key = $int.$intn;
	$corr_nom{$key} = ();
	while($intn = <FILE>) {
	    if($intn =~ m/^\*/) {
		chomp($intn);
		push(@{ $corr_nom{$key} }, [ split(/ /, substr($intn,2)) ] );
	    }
	    elsif($intn =~ m/^!/) {
		push(@{ $corr_nom{$key} }, "Absent" );		
	    }
	    else {
		$int = $intn;
		last;
	    }
	}
    }
    close FILE;
}

sub sort_alpha {
    my @p_na = split(/\n/,$a);
    my @p_nb = split(/\n/,$b);
    return $p_na[1] cmp $p_nb[1] || $p_na[0] cmp $p_nb[0];
}

sub export_latex {
    print "Fichier ?\n";
    my $f_export = <STDIN>;
    chomp($f_export);
    if($f_export eq "") { return 0 };
    open FILE, ">".$f_export;
    print FILE "\\documentclass[landscape]{article}\n";
    print FILE "\\usepackage[T1]{fontenc}\n";
    print FILE "\\usepackage[utf8]{inputenc}\n";
    print FILE "\\usepackage{geometry}\n";
    print FILE "\\geometry{margin=1cm}\n";
    print FILE "\\begin{document}\n";
    for my $interro (0..$#table) {
	print FILE "\\begin{tabular}{|l|";
	my @exosansq = grep(/^[1-9]\d*$/,@{ $tablequestion[$interro] });
	print FILE "c|"x (scalar(@{ $tablequestion[$interro] })+$table[$interro][0] - scalar(@exosansq));
	print FILE "|c|}\n";
	my @ign = ();
	my @pts = ();
	my @max = ();
	my @min = ();
	my @somme = ();
	print FILE "\\multicolumn{",(scalar(@{ $tablequestion[$interro] })+$table[$interro][0] - scalar(@exosansq) + 2),"}{c}{\\Large ".$interros[$interro]."}\\\\\n";
	if($table[$interro][0] > 0) {
	    print FILE "\\hline\n\t ";
	    for(my $i = 1; $i <= $table[$interro][0]; $i++) {
		my @b = grep(/^$i/,@{ $tablequestion[$interro] });
		if(scalar(@b) == 1) {
		    print FILE "& Exercice $i ";
		}
		else {
		    print FILE "& \\multicolumn{",scalar(@b)+1,"}{c|}{Exercice ",$i,"} ";
		}
	    }
	    print FILE "& Total ";
	    print FILE "\\\\\n";
	    print FILE "\\hline\n\t";
	    my $rank = -1;
	    for(my $i = 1; $i <= $table[$interro][0]; $i++) {
		my @b = grep(/^$i(\D|$)/,@{ $tablequestion[$interro] });
		for(my $j = 1; $j <= scalar(@b); $j++) {
		    my @c = grep(/^$i\.$j(\D|$)/,@{ $tablequestion[$interro] });
		    $rank += scalar(@c);
		    if(scalar(@c) == 1) {
			print FILE "& $j) ";
		    }
		    elsif(scalar(@c) > 0) {
			print FILE "& \\multicolumn{",scalar(@c),"}{c|}{",$j,")} ";
		    }
		    elsif($j == 1) {
			$rank +=1;
			push(@ign,$rank+$i-1);
			#print FILE "& ";
		    }
		}
		print FILE "& Total ";
		push(@pts,$rank);
	    }
	    print FILE "& \\\\\n";
	}
	print FILE "\\hline\n\t";
	print FILE "points ";
	my $totalexo = 0;
	my $total = 0;
	my $nq = 0;
	for my $i (0.. $#{ $points[$interro] }) {
	    print FILE "& $points[$interro][$i] ";
	    push(@min,$points[$interro][$i]);
	    push(@max,0);
	    push(@somme,0);
	    $totalexo += $points[$interro][$i];
	    $total += $points[$interro][$i];
	    $nq++;
	    if((grep {$_ == $i} @pts) > 0) {
		if($nq > 1) {
		    print FILE "& $totalexo ";
		}
		push(@min,$totalexo);
		push(@max,0);
		push(@somme,0);
		$totalexo = 0;
		$nq = 0;
	    }
	}
	print FILE "& $total ";
	push(@min,$total);
	push(@max,0);
	push(@somme,0);
	print FILE "\\\\\n";
	print FILE "\\hline\n\t";
	print FILE "\\hline\n\t";

	my @sortednotes = sort sort_alpha (keys %corr_nom);
	#print "@sortednotes";
	#my $somme = 0;
	my $nombre_eleves = 0;
	for my $i (0.. $#sortednotes) {
	    my $np = $sortednotes[$i];
	    $np =~ s/\n/ /;
	    print FILE $np;
	    my @ligne = @{ $corr_nom{$sortednotes[$i]} };
	    if($ligne[$interro] eq "Absent") {
		print FILE "& \\multicolumn{",scalar(@{ $tablequestion[$interro] })+$table[$interro][0]+1,"}{c|}{Absent}";
	    }
	    else {
		my @ligneo = @{ $ligne[$interro] };
		my $totalexo = 0;
		my $total = 0;
		$nombre_eleves++;
		my $k = 0;
		my $nq = 0;
		foreach my $l (0.. $#ligneo ) {
		    my $val = sprintf("%.0f",4.*$ligneo[$l]*$points[$interro][$l]/100)/4; 
		    print FILE "& ",$val;
		    if($min[$k] > $val) {
			$min[$k] = $val;
		    }
		    if($max[$k] < $val) {
			$max[$k] = $val;
		    }
		    $somme[$k] += $val;
		    $k++;
		    $nq++;
		    $totalexo += $val;
		    $total += $val;
		    if((grep {$_ == $l} @pts) > 0) {
			if($min[$k] > $totalexo) {
			    $min[$k] = $totalexo;
			}
			if($max[$k] < $totalexo) {
			    $max[$k] = $totalexo;
			}
			$somme[$k] += $totalexo;
			if($nq > 1) {
			    print FILE "& $totalexo ";
			}
			$k++;
			$totalexo = 0;
			$nq = 0;
		    }
		}
		print FILE "& $total ";
		if($min[$k] > $total) {
		    $min[$k] = $total;
		}
		if($max[$k] < $total) {
		    $max[$k] = $total;
		}
		$somme[$k] += $total;
		$k++;
	    }
	    print FILE "\\\\\n";
	    print FILE "\\hline\n\t";
	}
	print FILE "\\hline\n\t";
	print FILE "Moyenne";
	for my $l (0.. $#somme) {
	    next if((grep {$_ == $l} @ign) > 0);
	    print FILE "& ".sprintf("%.0f",4.*$somme[$l]/$nombre_eleves)/4;
	}
	print FILE "\\\\\n";
	print FILE "\\hline\n\t";
	print FILE "Min";
	for my $l (0.. $#min) {
	    next if((grep {$_ == $l} @ign) > 0);
	    print FILE "& $min[$l]";
	}
	print FILE "\\\\\n";
	print FILE "\\hline\n\t";
	print FILE "Max";
	for my $l (0.. $#max) {
	    next if((grep {$_ == $l} @ign) > 0);
	    print FILE "& $max[$l]";
	}
	#print FILE "Moyenne & \\multicolumn{",scalar(@{ $tablequestion[$interro] })+$table[$interro][0],"}{c||}{ }";
	#my $moyenne = sprintf("%.0f",4.*$somme/$nombre_eleves)/4;
	#print FILE " & $moyenne\\\\\n";
	print FILE "\\\\\n";
	print FILE "\\hline\n\t";
	print FILE "\\end{tabular}\n";
	print FILE "\\vfill\n";
	print FILE "\\newpage\n";
    }
    print FILE "\\end{document}\n";
    close FILE;
}

sub export_csv {
    my $interro = shift;
    print "Fichier ?\n";
    my $f_export = <STDIN>;
    chomp($f_export);
    if($f_export eq "") { return 0 };
    open FILE, ">".$f_export;
    for my $interro (0..$#table) {
	print FILE "; ".$interros[$interro]."\n";
	my @pts = ();
	my @ign = ();
	my @max = ();
	my @min = ();
	my @somme = ();
	if($table[$interro][0] > 0) {
	    for(my $i = 1; $i <= $table[$interro][0]; $i++) {
		my @b = grep(/^$i/,@{ $tablequestion[$interro] });
		if(scalar(@b) == 1) {
		    print FILE "; Exercice $i ";
		}
		else {
		    print FILE "; Exercice $i","; "x scalar(@b);
		}
	    }
	    print FILE "; Total \n";
	    my $rank = -1;
	    for(my $i = 1; $i <= $table[$interro][0]; $i++) {
		my @b = grep(/^$i(\D|$)/,@{ $tablequestion[$interro] });
		for(my $j = 1; $j <= scalar(@b); $j++) {
		    my @c = grep(/^$i\.$j(\D|$)/,@{ $tablequestion[$interro] });
		    $rank += scalar(@c);
		    if(scalar(@c) == 1) {
			print FILE "; $j) ";
		    }
		    elsif(scalar(@c) > 0) {
			my $char = "a";
			for my $num (0..$#c) {
			    print FILE "; $j) ".$char.") ";
			    $char++;
			}
			#print FILE "; $j) ","; "x (scalar(@c)-1);
		    }
		    elsif($j == 1) {
			$rank += 1;
			push(@ign,$rank+$i-1);
			#print FILE "; ";
		    }
		}
		print FILE "; Total ";
		push(@pts,$rank);
	    }
	    print FILE "; \n";
	}
	print FILE "points ";
	my $totalexo = 0;
	my $total = 0;
	my $nq = 0;
	for my $i (0.. $#{ $points[$interro] }) {
	    print FILE "; $points[$interro][$i] ";
	    push(@min,$points[$interro][$i]);
	    push(@max,0);
	    push(@somme,0);
	    $totalexo += $points[$interro][$i];
	    $total += $points[$interro][$i];
	    $nq++;
	    if((grep {$_ == $i} @pts) > 0) {
		if($nq > 1) {
		    print FILE "; $totalexo ";
		}
		push(@min,$totalexo);
		push(@max,0);
		push(@somme,0);
		$totalexo = 0;
		$nq = 0;
	    }
	}
	print FILE "; $total ";
	push(@min,$total);
	push(@max,0);
	push(@somme,0);
	print FILE "\n";

	my @sortednotes = sort sort_alpha (keys %corr_nom);
	#print "@sortednotes";
	#my $somme = 0;
	my $nombre_eleves = 0;
	for my $i (0.. $#sortednotes) {
	    my $np = $sortednotes[$i];
	    $np =~ s/\n/ /;
	    print FILE $np;
	    my @ligne = @{ $corr_nom{$sortednotes[$i]} };
	    if($ligne[$interro] eq "Absent") {
		print FILE "; Absent","; "x (scalar(@{ $tablequestion[$interro] })+$table[$interro][0]);
	    }
	    else {
		my @ligneo = @{ $ligne[$interro] };
		my $totalexo = 0;
		my $total = 0;
		$nombre_eleves++;
		my $k = 0;
		my $nq = 0;
		foreach my $l (0.. $#ligneo ) {
		    my $val = sprintf("%.0f",4.*$ligneo[$l]*$points[$interro][$l]/100)/4; 
		    print FILE "; ",$val;
		    if($min[$k] > $val) {
			$min[$k] = $val;
		    }
		    if($max[$k] < $val) {
			$max[$k] = $val;
		    }
		    $somme[$k] += $val;
		    $k++;
		    $totalexo += $val;
		    $total += $val;
		    $nq++;
		    if((grep {$_ == $l} @pts) > 0) {
			if($nq > 1) {
			    print FILE "; $totalexo ";
			}
			if($min[$k] > $totalexo) {
			    $min[$k] = $totalexo;
			}
			if($max[$k] < $totalexo) {
			    $max[$k] = $totalexo;
			}
			$somme[$k] += $totalexo;
			$k++;
			$totalexo = 0;
			$nq = 0;
		    }
		}
		print FILE "; $total ";
		if($min[$k] > $total) {
		    $min[$k] = $total;
		}
		if($max[$k] < $total) {
		    $max[$k] = $total;
		}
		$somme[$k] += $total;
		$k++;
	    }
	    print FILE "\n";
	}
	print FILE "Moyenne";
	for my $l (0.. $#somme) {
	    next if((grep {$_ == $l} @ign) > 0);
	    print FILE "; ".sprintf("%.0f",4.*$somme[$l]/$nombre_eleves)/4;
	}
	print FILE "\n";
	print FILE "Min";
	for my $l (0.. $#min) {
	    next if((grep {$_ == $l} @ign) > 0);
	    print FILE "; $min[$l]";
	}
	print FILE "\n";
	print FILE "Max";
	for my $l (0.. $#max) {
	    next if((grep {$_ == $l} @ign) > 0);
	    print FILE "; $max[$l]";
	}
	#print FILE "Moyenne & \\multicolumn{",scalar(@{ $tablequestion[$interro] })+$table[$interro][0],"}{c||}{ }";
	#my $moyenne = sprintf("%.0f",4.*$somme/$nombre_eleves)/4;
	#print FILE " & $moyenne\\\\\n";
	print FILE "\n";
	print FILE "\n\n\n";
    }
    close FILE;
}

if(-e $fichier) {
    &charger();
}

sub choisir_interro() {
    while(1) {
	my $i = 1;
	my $var;
	my $message = '';
	foreach $var ( @interros ) {
	    $message .= $i++.') '.$var."\n";
	}
	print $message;
	$var = <STDIN>;
	chop($var);
	if(/\D/ || $var < 1 || $var > $i) {
	    print "Mauvaise entrée\n";
	    next;
	}
	$interro_courante = $var-1;
	last;
    }
}

sub editer_eleve() {
    my $eleve;
    while(1) {
	open COL, "| column";
	my $i = 1;
	my @eleves = sort sort_alpha keys(%corr_nom);
	foreach my $eleve_l (@eleves) {
	    my $eleve_lm = $eleve_l;
	    $eleve_lm =~ s/\n/ /;
	    print COL $i++.") ".$eleve_lm."\n";
	}
	print COL $i.") Annuler\n";
	close COL;
	my $var = <STDIN>;
	chop($var);
	if(/\D/ || $var < 1 || $var > $i) {
	    print "Mauvaise entrée\n";
	    next;
	}
	elsif( $var == $i ) {
	    return;
	}
	$eleve = $eleves[$var-1];
	last;
    }
    my $notes_c = ${$corr_nom{$eleve}}[$interro_courante];
    if($notes_c == "Absent") {
	print "Absent à ".$interros[$interro_courante]."\n";
    }
    &entrer_notes($interro_courante,$eleve);
}

sub quitter() {
    exit 0;
}

my @actions = ("Ajouter une interro", "Ajouter un élève");
my @actions_f = (\&ajout_interro,
		 \&ajout_eleve,
		 \&choisir_interro,
		 \&editer_eleve,
		 \&definir_exos,
		 \&entrer_bareme,
		 \&entrer_notes,
		 \&sauver,
		 \&export_latex,
		 \&export_csv,
		 \&quitter,
    );
while(1) {
    if(scalar(@interros)>0) {
	$actions[2] = "Choisir une interro";
	$actions[3] = "Éditer les notes d'un élève";
	$actions[4] = "Définir les exercices de l'interro";
	$actions[5] = "Définir le barême de l'interro";
	$actions[6] = "Entrer les notes de l'interro";
	$actions[7] = "Sauvegarder";
	$actions[8] = "Exporter en LaTeX";
	$actions[9] = "Exporter en CSV";
    }
    

    my $action;
    while(1) {
	my $i = 1;
	my $var;
	my @vart = ( @actions, 'Quitter' );
	my $message = 'Interro sélectionnée : '.$interros[$interro_courante]."\n";
	foreach $var ( @vart ) {
	    $message .= $i++.') '.$var."\n";
	}
	print $message;
	$var = <STDIN>;
	chop($var);
	if(/\D/ || $var < 1 || $var > $i) {
	    print "Mauvaise entrée\n";
	    next;
	}
	$action = $actions_f[$var-1];
	last;
    }
    &{$action}($interro_courante);
}

#&export_latex();