#!/usr/bin/env perl

use strict;
use warnings;
use v5.10;
use Date::Manip;
use File::Basename;

use ACU::API::Projects;
use ACU::API::Submission;
use ACU::LDAP;
use ACU::Log;
$ACU::Log::log_file = "/var/log/hooks/" . basename($0) . ".log";
use ACU::Process;

# First, check if the repository is in the YYYY/ directory
exit 0 if ($ENV{GL_REPO} !~ /^2[0-9]{3}\/.+\/.+/);

my ($ref, $oldsha, $newsha) = @ARGV;

my $promo = $1 if ($ENV{'GL_REPO'} =~ m/([0-9]{4}).*/);
my $id_project = $1 if ($ENV{'GL_REPO'} =~ m/.*\/(.*)\//);
my $repo_login = $1 if ($ENV{'GL_REPO'} =~ m/.*\/.*\/(.*)/);

log WARN, "This is a project!";

if ($ref =~ m<^refs/tags/(.+)$>)
{
    my $tag = $1;
    log INFO, "Pushed tag for repository $ENV{GL_REPO}: $tag";

    # Get project informations
    my $project;
    eval {
	$project = API::Projects::get($id_project, $promo);
    };
    if ($@ or !$project) {
	my $err = $@;
	log TRACE, $err;
	log ERROR, "Impossible d'envoyer de tags ; si le problème persiste, passez au laboratoire.";
	exit 1;
    }

    log TRACE, $project;

    # Extract lot of data
    my @rendus = grep {
	exists $_->{vcs} and $_->{vcs}{tag} eq $tag;
    } @{ $project->{submissions} };

    my $date = $ENV{'GL_TS'};
    $date =~ s/\./ /;
    my $glts = ParseDate($date);

    chomp (my $tokengiven = `git cat-file tag $newsha | sed -e '1,/^\$/d'`);
    for my $rendu (@rendus)
    {
	my $open = ParseDate($rendu->{period}{begin});
	my $close = ParseDate($rendu->{period}{end});

	# TODO: check exceptions by login/group

	if ((Date_Cmp($glts, $open) == -1))
	{
	    print "[ACU] Tag not allowed: upload not yet opened!\n";
	    exit(4);
	}

	if ((Date_Cmp($glts, $close) == 1))
	{
	    print "[ACU] Tag not allowed: upload closed!\n";
	    exit(5);
	}

	my $token = $rendu->{vcs}{token};
	if ($token ne "" and $token ne $tokengiven)
	{
	    print "[ACU] Error 0x65cd58: Bad token.\n";
	    exit(6);
	}
    }
}

exit 1;
exit 0;