#!/bin/bash
# info: add new database server
# options: type host port db_user db_password [max_db] [tpl]
#
# The function add new database server to the server pool. It supports local
# and remote database servers, which is useful for clusters. By adding a host
# you can set limit for number of databases on a host. Template parameter is
# used only for PostgreSQL and has an default value "template1". You can read
# more about templates in official PostgreSQL documentation.


#----------------------------------------------------------#
#                    Variable&Function                     #
#----------------------------------------------------------#

# Argument defenition
type=$1
host=$2
port=$3
db_user=$4
db_password=$5
max_db=${6-300}
template=${7-template1}


# Importing variables
source $VESTA/conf/vars.conf
source $V_CONF/vesta.conf
source $V_FUNC/shared.func
source $V_FUNC/db.func


#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

# Checking arg number
args_usage='type host port db_user db_password [max_db] [tpl]'
check_args '5' "$#" "$args_usage"

# Checking argument format
format_validation 'host' 'port' 'db_user' 'db_password' 'max_db'
format_validation 'template'

# Checking db system is enabled
is_system_enabled 'db'

# Checking db type
is_type_valid 'db' "$type"

# Checking host existance
is_db_host_new

# Checking host connection
case $type in
    mysql) is_mysql_host_alive ;;
    pgsql) is_pgsql_host_alive ;;
esac


#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

# Concatentating db host string
case $type in
    mysql) new_str="HOST='$host' USER='$db_user' PASSWORD='$db_password'";
            new_str="$new_str PORT='$port' MAX_DB='$max_db' U_SYS_USERS=''";
            new_str="$new_str U_DB_BASES='0'  ACTIVE='yes' DATE='$V_DATE'";;
    pgsql) new_str="HOST='$host' USER='$db_user' PASSWORD='$db_password'";
            new_str="$new_str PORT='$port' TPL='$template'";
            new_str="$new_str MAX_DB='$max_db' U_SYS_USERS=''";
            new_str="$new_str U_DB_BASES='0' ACTIVE='yes' DATE='$V_DATE'";;
esac

# Adding host to conf
echo "$new_str" >> $V_DB/$type.conf
chmod 640 $V_DB/$type.conf


#----------------------------------------------------------#
#                       Vesta                              #
#----------------------------------------------------------#

# Hidding db pass
V_EVENT=$(echo $V_EVENT | sed -e "s/$db_password/xxxxxx/g")

# Logging
log_event 'system' "$V_EVENT"

exit