#!/bin/bash

#
# mysql functions for the bash
# Version 0.1
#
# Niels Rogalla <niro@magellan-linux.de>
#
# $Header: /home/cvsd/alx-cvs/alx-src/alxconfig-ng/functions/mysqlfunctions,v 1.5 2005-08-17 22:09:59 niro Exp $

mysql_command(){
	
	local SQL_USER
	local SQL_PASS
	local SQL_HOST
	local SQL_DB
	local SQL_COMMAND

	SQL_USER=$1
	SQL_PASS=$2
	SQL_HOST=$3
	SQL_DB=$4
	SQL_COMMAND=$5

	#fallback (SQL_OPTS not, they are optional )
	if [ -z "${SQL_USER}" \
		-o -z "${SQL_PASS}" \
		-o -z "${SQL_HOST}" \
		-o -z "${SQL_DB}" \
		-o -z "${SQL_COMMAND}" ]
	then
		echo
		echo "Usage:"
		echo -e "      mysql_command user pass host db \"sql-command\""
		echo
		return 1
	fi
	
	mysql \
		--user="${SQL_USER}" \
		--password="${SQL_PASS}" \
		--host="${SQL_HOST}" \
		--database="${SQL_DB}" \
		--batch \
		--skip-column-names \
		--execute="${SQL_COMMAND}" \
		|| return 1
	
	return 0
}

mysql_enum_colums(){
	local SQL_USER
	local SQL_PASS
	local SQL_HOST
	local SQL_DB
	local SQL_TABLE

	local SHOWTABLES
	local i
	local read
	local field
	local type
	local null
	local key
	local default
	local extra
	
	SQL_USER=$1
	SQL_PASS=$2
	SQL_HOST=$3
	SQL_DB=$4
	SQL_TABLE=$5
	
	#show the column names ?
	if [ -n "${6}" -a "${6}" == "show" ] 
	then
		SHOWTABLES=true
	else
		 SHOWTABLES=false
	fi

	#fallback (SQL_OPTS not, they are optional )
	if [ -z "${SQL_USER}" \
		-o -z "${SQL_PASS}" \
		-o -z "${SQL_HOST}" \
		-o -z "${SQL_DB}" \
		-o -z "${SQL_TABLE}" ]
	then
		echo
		echo "Usage:"
		echo -e "      mysql_enum_columns user pass host db table [show]"
		echo
		return 1
	fi

	declare -i i=0
	while read field type null key default extra
	do
		i=${i}+1
		[ "${SHOWTABLES}" == true ] && echo "${field}"
	done << EOF
$(mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} "show columns from ${SQL_TABLE};")
EOF
	[ "${SHOWTABLES}" == true ] || echo "${i}"
}

beep3x() {
	echo -en "\a"
	sleep 0.7
	echo -en "\a"
	sleep 0.7
	echo -en "\a"
}

reach_mysql_server()
{
	# set connection timeout to 10 secs
	mysql --connect_timeout=10 \
		--user="${SQL_USER}" \
		--password="${SQL_PASS}" \
		--host="${SQL_HOST}" \
		--database="${SQL_DB}" \
		--batch \
		--execute="" $> /dev/null && return 0 || \
		(
			echo -e ${COLRED}
			echo "Cannot reach a mysql-server at '${SQL_HOST}'."
			echo "None of the current settings of this client will be touched."
			echo "Please inform your system-administrator."
			echo -e ${COLDEFAULT}
			beep3x
			sleep 5
			return 1
		)
}