run

#!/usr/bin/env bash
# shellcheck disable=SC2034,SC2154
# SC2034: foo appears unused. Verify it or export it.
# SC2154: var is referenced but not assigned.

set -eu

INSTALLER=/etc/.pivpn/auto_install/install.sh

# Skip execution when sourcing the INSTALLER
PIVPN_TEST=true

# shellcheck disable=SC1090
source "${INSTALLER}"

# main procedural
{
    # Variables are needed in the functions call later.
    useUpdateVars=true
    PLAT=Ubuntu
    SUDO=
    SUDOE=

    # shellcheck disable=SC1091
    source /etc/pivpn/setupVars.conf

    PROTO=$pivpnProto

    # The right way to test if a variable is unset or not.
    # See https://stackoverflow.com/a/13864829
    if [ -z ${IPv4dns+x} ]; then
        IPv4dns=$(nslookup 127.0.0.1 | grep Server: | awk '{print $2}')
    fi

    if [ -z ${PUBLICDNS+x} ]; then
        if ! PUBLICDNS=$(dig +short myip.opendns.com @resolver1.opendns.com)
        then
            echo "dig failed, now trying to curl eth0.me"
            if ! PUBLICDNS=$(curl eth0.me)
            then
                echo "eth0.me failed, please check your internet connection/DNS"
                exit $?
            fi
        fi
    fi

    keys=(pivpnInterface IPv4addr IPv4gw IPv4dns)
    for k in "${keys[@]}"; do
        sed -i "s/#${k}#/${!k}/g" "${dhcpcdFile}"
    done

    # This variable is initialized in confOpenVPN but also used in confOVPN.
    # We make it globalized so as to transit to the second function.
    SERVER_NAME=

    # Call functions in the INSTALLER
    confOpenVPN
    confNetwork
    confOVPN

    sed -i '0,/\(dhcp-option DNS \)/ s/\(dhcp-option DNS \).*/\1'${OVPNDNS1}'\"/' /etc/openvpn/server.conf
    sed -i '0,/\(dhcp-option DNS \)/! s/\(dhcp-option DNS \).*/\1'${OVPNDNS2}'\"/' /etc/openvpn/server.conf

    finalExports

    printf "\\n::: Clean up ovpn profile folder\\n"
    rm -rf /home/"${pivpnUser}"/ovpns/*

    printf "\\n::: Installation Complete!\\n\\n"


    # Generate the client ovpn profile
    # pivpn with exit code 1 even on success
    pivpn -a -n "${CLIENT_NAME}" -p "${CLIENT_PASS}" || true


    printf "\\n\\n::: PiVPN Service Started\\n"
    openvpn --config /etc/openvpn/server.conf
} 2>&1 | tee "${instalLogLoc}"