#############################################################
#
# PostgresNodePath
#
# subclass of PostgresNode which runs commands in the context
# of a given PostgreSQL install path.  The given path is
# is expected to have a standard install, with bin and lib
# subdirectories.
#
# The only API difference between this and PostgresNode is
# that get_new_node() takes an additional parameter in position
# 1 that contains the install path. Everything else is either
# inherited from PostgresNode or overridden but with identical
# parameters.
#
# As with PostgresNode, the environment variable PG_REGRESS
# must point to a binary of pg_regress, in order to init() a
# node.
#
#############################################################


package PostgresNodePath;

use strict;
use warnings;

use parent qw(PostgresNode);

use Exporter qw(import);
our @EXPORT = qw(get_new_node);

sub get_new_node
{
	my $installpath = shift;
	my $node = PostgresNode::get_new_node(@_);
	bless $node;    # re-bless into current class
	$node->{_installpath} = $installpath;
	return $node;
}


# class methods we don't override:
# new() # should probably be hidden
# get_free_port()
# can_bind()


# instance methods we don't override because we don't need to:
# port() host() basedir() name() logfile() connstr() group_access() data_dir()
# archive_dir() backup_dir() dump_info() ? set_replication_conf() append_conf()
# backup_fs_hot() backup_fs_cold() _backup_fs() init_from_backup()
# rotate_logfile() enable_streaming() enable_restoring() set_recovery_mode()
# set_standby_mode() enable_archiving() _update_pid teardown_node()
# clean_node() lsn() wait_for_catchup() wait_for_slot_catchup() query_hash()
# slot()

# info is special - we add in the installpath spec
# no need for environment override
sub info
{
	my $node = shift;
	my $inst = $node->{_installpath};
	my $res  = $node->SUPER::info();
	$res .= "Install Path: $inst\n";
	return $res;
}

BEGIN
{

	# putting this in a BEGIN block means it's run and checked by perl -c


	# everything other than info and get_new_node that we need to override.
	# they are all instance methods, so we can use the same template for all.
	my @instance_overrides = qw(init backup start kill9 stop reload restart
	  promote logrotate safe_psql psql background_psql
	  interactive_psql poll_query_until command_ok
	  command_fails command_like command_checks_all
	  issues_sql_like run_log pg_recvlogical_upto
	);

	my $template = <<'    EOSUB';
 
	sub SUBNAME
	{
		my $node=shift;
		my $inst = $node->{_installpath};
		local %ENV = %ENV;
		$ENV{PATH} = "$inst/bin:$ENV{PATH}";
		 # XXX fix this for Windows and OSX
		if (exists $ENV{LD_LIBRARY_PATH})
		{
			$ENV{LD_LIBRARY_PATH} = "$inst/lib:$ENV{LD_LIBRARY_PATH}";
		}
		else
		{
			$ENV{LD_LIBRARY_PATH} = "$inst/lib}";
		}
		$node->SUPER::SUBNAME(@_);
	}

    EOSUB

	foreach my $subname (@instance_overrides)
	{
		my $code = $template;
		$code =~ s/SUBNAME/$subname/g;
		eval($code);
	}
}

1;