#!/usr/bin/env bash
#--------------------------------------------------------------------
#
# make_signature
#
#    Bash script building module of pgxc_ctl.
#
# Copyright (c) 2012 Postgres-XC Development Group
#
#---------------------------------------------------------------------
#
# This module is used to create signature.h and pgxc_ctl_bash.c files.
#
# pgxc_ctl_bash.c files contains two information,
# 1. Bash script to read pgxc_ctl configuration information and write
#    it back to pgxc_ctl.  This way, users can use their familiar bash
#    script to configure postgres-xc cluster.
#    This includes typical (test) configuration so that pgxc_ctl
#    can run even with incomplete configuration.
# 2. Template postgres-xc cluster configuration used by pgxc_ctl.
#    You can get this template by typing "prepare configu" command.
#
# signature.h contains signature information which is useful in 
# checking the bash script and pgxc_ctl binary build.
#
# At present, the bash script is installed each time pgxc_ctl is invoked
# and uninstalled, this has no significant role.   In the future,
# when we need to maintain this bash script, it will work to enforce
# the integrity between the two.
#------------------------------------------------------------------------

# make sure we fail if any of the executed commands fails
set -e

sig=`date +%y%m%d_%H%M_%N`
cat > signature.h <<EOF
/*-------------------------------------------------------------------------
 *
 * signature.h
 *
 *    Signature of module of Postgres-XC configuration and operation tool.
 *
 * Copyright (c) 2013 Postgres-XC Development Group
 *
 *-------------------------------------------------------------------------
 */
#ifndef SIGNATURE_H
#define SIGNATURE_H
/* Signature file to identify the make */
EOF
echo '#'define signature \"$sig\" >> signature.h
cat >> signature.h <<EOF
#endif /* SIGNATURE_H */
EOF



sed -e 's/"/\\\"/g; s/^/"/; s/$/",/; s/^"#ifdef XCP",/#ifdef XCP/; s/^"#endif",/#endif/' pgxc_ctl_bash_2 > pgxc_ctl_bash.c.wk

cat > pgxc_ctl_bash.c <<EOF 
/*
 *-----------------------------------------------------------------------
 *
 * pgxc_ctl_bash.c
 *
 *    Bash script body for Postrgres-XC configuration and operation tool.
 *
 * Copyright (c) 2013 Postgres-XC Development Group
 *
 *------------------------------------------------------------------------
 *
 * This file was created by make_signature utility when pgxc_ctl was built.
 *
 * pgxc_ctl uses this bash script to configure postgres-xc and read
 * configuration.
 *
 * This provides users very flexible way to configure their own
 * postgres-xc cluster.  For example, by using extra variables and script,
 * you can save most of your specific hours typing same (or similar)
 * variable values again and again.
 */

#include <stddef.h>

/*
 * Bash script to read pgxc_ctl configuration parameters and write
 * back to itself.
 *
 * This part is written to pgxc_ctl work directory and reads
 * configuration file, which is also written in bash script.
 */

char *pgxc_ctl_bash_script[] = {
EOF

cat pgxc_ctl_bash.c.wk >> pgxc_ctl_bash.c

cat >> pgxc_ctl_bash.c <<EOF
NULL
};

EOF

rm pgxc_ctl_bash.c.wk

sed -e 's/"/\\\"/g; s/^/"/; s/$/",/; s/^"#ifdef XCP",/#ifdef XCP/; s/^"#endif",/#endif/' pgxc_ctl_conf_part_full > pgxc_ctl_conf_part.wk

cat >> pgxc_ctl_bash.c <<EOF
/*
 * Prototype of pgxc_ctl configuration file.
 *
 * It should be self descripting.   Can be extracted to your pgxc_ctl
 * work directory with 'prepare config' command.
 */

char *pgxc_ctl_conf_prototype[] = {
EOF

cat pgxc_ctl_conf_part.wk >> pgxc_ctl_bash.c

cat >> pgxc_ctl_bash.c <<EOF
NULL
};
EOF

rm pgxc_ctl_conf_part.wk

sed -e 's/"/\\\"/g; s/^/"/; s/$/",/; s/^"#ifdef XCP",/#ifdef XCP/; s/^"#endif",/#endif/' pgxc_ctl_conf_part_minimal > pgxc_ctl_conf_part.wk

cat >> pgxc_ctl_bash.c <<EOF
/*
 * Prototype of pgxc_ctl configuration file.
 *
 * It should be self descripting.   Can be extracted to your pgxc_ctl
 * work directory with 'prepare config' command.
 */

char *pgxc_ctl_conf_prototype_minimal[] = {
EOF

cat pgxc_ctl_conf_part.wk >> pgxc_ctl_bash.c

cat >> pgxc_ctl_bash.c <<EOF
NULL
};
EOF

rm pgxc_ctl_conf_part.wk

sed -e 's/"/\\\"/g; s/^/"/; s/$/",/; s/^"#ifdef XCP",/#ifdef XCP/; s/^"#endif",/#endif/' pgxc_ctl_conf_part_empty > pgxc_ctl_conf_empty.wk

cat >> pgxc_ctl_bash.c <<EOF
/*
 * Prototype of pgxc_ctl configuration file.
 *
 * It should be self descripting.   Can be extracted to your pgxc_ctl
 * work directory with 'prepare empty' command.
 */

char *pgxc_ctl_conf_prototype_empty[] = {
EOF

cat pgxc_ctl_conf_empty.wk >> pgxc_ctl_bash.c

cat >> pgxc_ctl_bash.c <<EOF
NULL
};
EOF

rm pgxc_ctl_conf_empty.wk