Mongodb login creator with authentication. It is used for creating mongodb login scripts so that you easily can login into mongodb.

mongo_login_creator.sh

# declaring some colors for pretty output
declare -A colors=( ["g"]="\e[32m" ["r"]="\e[31m" ["y"]="\e[33m" ["b"]="\e[34m" ["m"]="\e[35m" ["c"]="\e[36m" ["default"]="\e[39m" )
declare -A sets=( ["b"]="\e[1m" ["d"]="\e[2m" ["u"]="\e[4m" ["bl"]="\e[5m")
declare -A resets=( ["b"]="\e[21m" ["d"]="\e[22m" ["u"]="\e[24m" ["bl"]="\e[25m")

# declare colorful echo
function echoc {
  STRING_PRIFIX=''

  if [ -n "$2" ]
  then
    STRING_PRIFIX=$STRING_PRIFIX${colors[$2]}
  fi

  if [ -n "$3" ]
  then
    STRING_PRIFIX=$STRING_PRIFIX${sets[$3]}
    STRING_POSTFIX=${resets[$3]}
  fi

  echo -e "$STRING_PRIFIX"$1"${colors[default]}$STRING_POSTFIX"
}

function main {
  INFO=$1
  SUCCESS=$2
  ERROR=$3

  PORT_NUMBER=27017
  echoc "[optional]: Please enter port number(default 27017) [ENTER]: " "$INFO" "b"
  read TEMP_INPUT
  PORT_NUMBER=${TEMP_INPUT:-$PORT_NUMBER}

  DB_HOSTNAME="localhost"
  echoc "[optional]: Please enter host address (default localhost) [ENTER]: " "$INFO" "b"
  read TEMP_INPUT
  DB_HOSTNAME=${TEMP_INPUT:-$DB_HOSTNAME}

  DB_NAME="admin"
  echoc "[optional]: Please enter authentication database name(default admin) [ENTER]: " "$INFO" "b"
  read TEMP_INPUT
  DB_NAME=${TEMP_INPUT:-$DB_NAME}

  echoc "[required]: Please enter username for given database [ENTER]: " "$INFO" "b"
  read DB_UESRNAME
  if [ -z $DB_UESRNAME ]
  then
    echoc "empty username provided. Please enter a valid username." "$ERROR" "b"
    exit
  fi

  echoc "[required]: Please enter password [ENTER]:" "$INFO" "b"
  read DB_PASSWORD

  if [ -z $DB_PASSWORD ]
  then
    echoc "empty password provided. Please enter a valid password." "$ERROR" "b"
    exit
  fi

  DB_LOGIN_COMMAND="mongo --port  $PORT_NUMBER --host $DB_HOSTNAME --username $DB_UESRNAME --password $DB_PASSWORD --authenticationDatabase $DB_NAME"
  LOGIN_COMMAND_FILE=$DB_UESRNAME"_"$DB_HOSTNAME".sh"

  echoc "[DONE]: Command created successfully" "$SUCCESS" "b"
  echoc "\t$DB_LOGIN_COMMAND" "$SUCCESS"

  printf "\n"
  echoc " \tmake the command executable by:" "$SUCCESS"
  echoc "\t chmod +x $LOGIN_COMMAND_FILE" "$SUCCESS" "bl"
  echo $DB_LOGIN_COMMAND > $LOGIN_COMMAND_FILE
}

# $1: info $2: success $3: error
main "m" "g" "r"