#
# $Id$
#
# This script checkouts ACE from CVS, updates the "clone" directory,
# compiles $ACE_ROOT/ace and $ACE_ROOT/tests and finally runs
# $ACE_ROOT/tests/run_tests.sh.
#
# If it detects any problem it send email.
#
# DO NOT invoke this script from your crontab, use
# auto_compile_wrapper for that.
#
# This script requires Perl5.
#
# TODO: Modify the script or split it in such a way that the main copy
# can be obtained either using cvs or downloading the lastest beta
# from the WWW.
#

eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}'
    & eval 'exec perl -S $0 $argv:q'
    if 0;

# The first three lines above let this script run without specifying the
# full path to perl, as long as it is in the user's PATH.
# Taken from perlrun man page.

use File::Basename;
use FileHandle;
require POSIX;

# This is the module we will checkout, someday someone could define a
# smaller module.
$MODULE='ACE_wrappers';

# This are the sub-directories (in the module) we really compile.

@BUILD_LIST=('ace', 'tests');

# This are the pairs "sub-directory,script" we run.

%RUN_LIST=('tests' => 'run_tests.sh');

# We obtain our revision to report errors in a "nice" manner.
$REVISION='$Revision$';

# Find out the command name.
$CMD = basename($0);

# Extract configuration information from command line.
# TODO: Some validation and checking should be done here.
$CHECKOUT = $ARGV[0];
$BUILD = $ARGV[1];
$LOGDIR = $ARGV[2];
$ADMIN = $ARGV[3];

# When an error is found we try to die gracefully and send some email
# to ADMIN.

sub mydie {
    local $msg = shift;
    open(MAIL, "|mail $ADMIN")
	|| die "cannot open email pipe on error: $msg\n";
    print MAIL 'The following error is brought to you by: ', "\n";
    print MAIL $CMD, ' [', $REVISION, "] for $BUILD on $CHECKOUT\n";
    print MAIL "\n", $msg, "\n";
    print MAIL "\nPlease check log files for more info\n";
    close(MAIL)
	|| die "cannot close email pipe on error: $msg\n";
    print HIST 'FAILED', "\n";
    exit 0;
}

### MAIN FUNCTION

$histfile = $LOGDIR . '/history';
open(HIST, '>>' . $histfile)
    # Do not use 'mydie' to report the problem, it tries to use HIST....
    || die "cannot open history file \"$histfile\"\n";

$date = localtime;

print HIST $CMD, ': running at ', $date, ' ';

if (-f $LOGDIR . '/.disable') {
    print HIST 'DISABLED\n';
    exit 0;
}

$LOGFILE = $LOGDIR . '/' . POSIX::strftime("%b%d_%Y.log", localtime);
open(LOG, '>' . $LOGFILE)
    || mydie "cannot open log file";

LOG->autoflush ();

# The following lines are useful when debugging the script or wrapper.
# print LOG $CHECKOUT, " ", $BUILD, " ", $LOGDIR, " ", $ADMIN, "\n";
#while (($key,$value) = each %ENV) {
#  print LOG $key, " = ", $value, "\n";
#}

chdir($CHECKOUT)
    || mydie "Cannot chdir to $CHECKOUT";

$date = localtime;
print LOG "$CMD: starting checkout at ", $date, "\n";
open(CVS, "cvs checkout -P $MODULE 2>&1 |")
    || mydie "cannot start checkout of $MODULE";

$conflicts = 0;
while (<CVS>) {
    if (m/^C /) {
	$conflicts = 1;
    }
    print LOG $_;
}
close(CVS)
    || mydie "error while checking out $MODULE";
$date = localtime;
print LOG "$CMD: checkout finished at ", $date, "\n";

if ($conflicts != 0) {
    mydie "conflicts on checkout";
}

chdir($MODULE)
    || mydie "cannot chdir to $MODULE";

$date = localtime;
print LOG "$CMD: starting clone at ", $date, "\n";
open(MAKE, "bin/create_ace_build -a -v $BUILD 2>&1 |")
    || mydie "cannot clone directory";
while(<MAKE>) {
    print LOG $_;
}
close(MAKE)
    || mydie "error while cloning ACE_ROOT";
$date = localtime;
print LOG "$CMD: clone finished at ", $date, "\n";

chdir('build/' . $BUILD)
    || mydie "cannot chdir to $BUILD";

# This is needed for real make run....
$ENV{'ACE_ROOT'} = $CHECKOUT . '/' . $MODULE . '/build/' . $BUILD;

foreach $i (@BUILD_LIST) {
    $date = localtime;
    print LOG "$CMD: make for $i started at ", $date, "\n";
    open(MAKE, "make -k shared_libs_only=1 -C $i 2>&1 |")
	|| mydie "cannot start make for $i";
    $make_errors = 0;
    while (<MAKE>) {
	if (m/^make: \*\*\*/) {
	    $make_errors = 1;
	}
	print LOG $_;
    }
    close(MAKE)
	|| mydie "errors while running make in $i";
    $date = localtime;
    print LOG "$CMD: make for $i finished at ", $date, "\n";
    if ($make_errors == 1) {
	mydie "errors detected in $i compilation";
    }
}

while (($directory,$program) = each %RUN_LIST) {
    $date = localtime;
    print LOG "$CMD: running $program in $directory at ", $date, "\n";
    chdir($directory)
	|| mydie "cannot chdir to $directory";

    open(RUN, "$program 2>&1 |")
	|| mydie "cannot run $program";
    $run_error = 0;
    while (<RUN>) {
	print LOG $_;
	if (m/^Error/ || m/FAILED/) {
	    $run_error = 1;
	}
    }
    close(RUN)
	|| mydie "cannot finish $program";
    $date = localtime;
    print LOG "$CMD: $program finished ", $date, "\n";

    if ($run_error != 0) {
	mydie "errors detected while running $program in $directory";
    }
}

close(LOG)
    || mydie "cannot close LOGFILE";

print HIST "OK\n";
close(HIST)
    || mydie "cannot close history file";