# check if run from script
[[ "${BASH_SOURCE[0]}" == "${0}" ]] && exit 1

#------------------------------------------------------------------------------
# read default param
init_default(){
    DEFAULT_CONF="${ROOT_DIR}/config/default.conf"
    [[ -f "$DEFAULT_CONF" ]] && source "$DEFAULT_CONF"
}
#------------------------------------------------------------------------------
# read param from config file 
init_env() {
# read config file
    CONFIG_FILE="/etc/own-pki/own-pki.conf"
    [[ -f "$CONFIG_FILE" ]] && source "$CONFIG_FILE" || msg_error "File ${ORANGE}$CONFIG_FILE${RED} missing. Run 'sudo bin/install.sh'${NC}"

# debug mode 
    if [[ "${DEBUG:-false}" == "true" ]]; then
        set -x
    fi
    out_tmp=$(mktemp)
    err_tmp=$(mktemp)
}
#------------------------------------------------------------------------------
# read credential from /root/.cred file
init_cred(){
    CRED_FILE=/root/.cred
    [[ -f "$CRED_FILE" ]] && source "$CRED_FILE"|| msg_error "File ${ORANGE}$CRED_FILE${RED} missing.${NC}"
}
#------------------------------------------------------------------------------
# clean string
# input: string to clean
# output: string cleaned
clean_string() {
  echo "$1" | \
    # translate special chars to closest ASCII (e.g., 'é' -> 'e')
    iconv -f utf-8 -t ascii//TRANSLIT | \
    # convert to lowercase
    tr '[:upper:]' '[:lower:]' | \
    # replace any non-alphanumeric character with an underscore
    sed -E 's/[^a-z0-9]+/_/g' | \
    # replace multiple underscores into one
    sed -E 's/(_)+/_/g' | \
    # remove underscores at the beginning or end
    sed -E 's/^_|_$//g'
}
#------------------------------------------------------------------------------
# check format fqdn
# input: fqdn to check
check_format_fqdn(){
    if [[ !  "$1" =~ ^([a-z0-9]+(-[a-z0-9]+)*\.){2,}[a-z]{2,}$ ]]; then
        msg_error "\n$1 is not a fqdn valid.\n" 
        exit 1
    fi
}
#------------------------------------------------------------------------------
# check format ip address
# input: ip address to check
check_format_ip(){
    if [[ ! "$1" =~ ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$ ]]; then
        msg_error "\n$1 is not an address IP valid.\n" 
        exit 1
    fi
}
#------------------------------------------------------------------------------
# check if the user has sudo privileges and ensure that the script runs with sudo.
check_sudo(){
# check if user has sudo rigth
    if sudo ! -n true 2>/dev/null; then
        msg_error "\nAccess denied: user $USER does not have sudo privileges or a password is required.\n"
        exit 1
    fi

# check if the effective user ID is 0 (root)
    if [[ $EUID -ne 0 ]]; then
        msg_error "\nThis script must be run as root or with sudo.\n"
        exit 1
    fi
}
#------------------------------------------------------------------------------
# check the return code
check_rc(){
    if [ "$1" != "0" ]; then
       msg_error "Error (RC:$rc)"
       exit 1
    else
       msg_ok "OK"
    fi
}
#-----------------------------------------------------------
# set colors
# RED Error 
# ORANGE Attention or color for parameters when 
#        confirmation
# CYAN Ask to user or display a data
# GREEN OK
set_color(){
  if [[ "$ENABLE_COLOR" == "true" ]]; then
      RED='\e[0;31m'
      ORANGE='\e[0;33m'
      CYAN='\e[0;36m'
      GREEN='\e[0;32m'
      NC='\e[0m'
  else
      RED=''
      ORANGE=''
      CYAN=''
      GREEN=''
      NC=''
  fi
}
#-----------------------------------------------------------
# ask question yes or no
# input: prompt
yes_no(){
    if [ "$ASSUME_YES" == "0" ]; then
        echo -n -e "${CYAN}$1 [y/N]? ${NC}"
        unset answer
        read answer
        if [ "${answer}" != "y" ]; then
            echo -e "${ORANGE}Canceled!${NC}"
            exit 1
        fi
    fi
}