#!/bin/bash
# info: change database username
# options: USER DATABASE DBUSER [DBPASS]
#
# The function for changing database user. It uses the


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

# Argument defenition
user=$1
database=$2
dbuser="$user"_"$3"
dbpass=$4

# Includes
source $VESTA/func/main.sh
source $VESTA/func/db.sh
source $VESTA/func/rebuild.sh
source $VESTA/conf/vesta.conf

# Hiding password
A4='******'
EVENT="$DATE $TIME $SCRIPT $A1 $A2 $A3 $A4 $A5 $A6 $A7 $A8 $A9"


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

check_args '3' "$#" 'USER DATABASE DBUSER [DBPASS]'
validate_format 'user' 'database' 'dbuser'
if [ ! -z "$dbpass" ]; then
    validate_format 'dbpass'
fi
is_system_enabled "$DB_SYSTEM" 'DB_SYSTEM'
is_object_valid 'user' 'USER' "$user"
is_object_unsuspended 'user' 'USER' "$user"
is_object_valid 'db' 'DB' "$database"
is_object_unsuspended 'db' 'DB' "$database"

# Compare old and new user
old_dbuser=$(get_object_value 'db' 'DB' "$database" '$DBUSER')
if [ "$old_dbuser" = "$dbuser" ]; then
    exit
fi


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

# Set new dbuser
update_object_value 'db' 'DB' "$database" '$DBUSER' "$dbuser"

# Get database values
get_database_values

# Rebuild datbase
case $TYPE in
    mysql) rebuild_mysql_database ;;
    pgsql) rebuild_pgsql_database ;;
esac

# Change password
if [ ! -z "$dbpass" ]; then
    case $TYPE in
        mysql) change_mysql_password ;;
        pgsql) change_pgsql_password ;;
    esac

    # Update config value
    update_object_value 'db' 'DB' "$database" '$MD5' "$md5"
fi

# Remove old user
check_old_dbuser=$(grep "DBUSER='$old_dbuser'" $USER_DATA/db.conf)
if [ -z "$check_old_dbuser" ]; then
    case $TYPE in
        mysql) delete_mysql_user ;;
        pgsql) delete_pgsql_user ;;
    esac
fi


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

# Logging
log_history "changed $database database user to $dbuser"
log_event "$OK" "$EVENT"

exit