#!/bin/sh

[ -z $1 ] && echo "Usage: $0 <username>" && exit 1

if [ "$(systemctl is-active mongod)" != "active" ]; then
        echo "ERROR: mongoDB service is not running"
        exit 1  
fi

USERNAME=$1

EXISTS=$(mongo main --quiet --eval "db.users.find({ username: '$USERNAME' })")

if [ -z "$EXISTS" ]; then
    echo "ERROR: user does not exists!"
    exit 1
fi

REMOVED=`mongo main --quiet --eval "db.users.remove({username: '$USERNAME'}).nRemoved"`

if [ $REMOVED -gt 0 ]; then
    echo "User deleted"
else
    echo "ERROR: Failed to delete user"
fi
