#!/usr/bin/env bash

# Dependencies Installer
# Min. Requirement  : GNU/Linux Ubuntu 16.04 & 16.04
# Last Build        : 02/08/2019
# Author            : MasEDI.Net (me@masedi.net)
# Since Version     : 1.0.0

# Include helper functions.
if [ "$(type -t run)" != "function" ]; then
    BASEDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )
    # shellcheck disable=SC1091
    . "${BASEDIR}/helper.sh"
fi

# Make sure only root can run this installer script.
requires_root

# Make sure only apt-based Linux distribution can run this installer script.
if hash apt-get 2>/dev/null; then
    # Update locale
    run locale-gen --purge en_US.UTF-8 id_ID.UTF-8

    # Attended locales reconfiguration causing Terraform provisioning stuck.
    if ! "${AUTO_INSTALL}"; then
        run dpkg-reconfigure locales
    fi

    # Update repositories.
    echo -e "\nUpdating repository, please wait..."
    run apt-get update -qq -y && \
    run apt-get upgrade -qq -y

    # Install dependencies.
    echo -e "\nInstalling pre-requisites/dependencies package..."
    run apt-get install -qq -y \
        apt-transport-https apt-utils apache2-utils autoconf automake bash build-essential \
        ca-certificates cmake cron curl dmidecode dnsutils gcc geoip-bin geoip-database git \
        gnupg2 htop iptables libc6-dev libcurl4-openssl-dev libgd-dev libgeoip-dev libssl-dev \
        libxml2-dev libpcre3-dev libtool libxslt1-dev lsb-release make openssh-server openssl \
        pkg-config python python3 re2c rsync software-properties-common sasl2-bin snmp sudo \
        sysstat tar tzdata unzip wget whois zlib1g-dev

    # Configure server clock.
    echo -e "\nReconfigure server clock..."

    # Reconfigure timezone.
    if [[ -n ${TIMEZONE} && ${TIMEZONE} != "none" ]]; then
        run bash -c "echo '${TIMEZONE}' > /etc/timezone"
        run rm -f /etc/localtime
        run dpkg-reconfigure -f noninteractive tzdata

        # Sync and update local time with ntpd.
        # Masked? unmask first.
        #run systemctl unmask ntp.service
        #run systemctl start ntp

        # Save config.
        save_config "TIMEZONE=${TIMEZONE}"
    fi

    # Verify system pre-requisites.
    verify_prerequisites
else
    fail "Unable to install LEMPer, this GNU/Linux distribution is not supported."
fi

success "Required packages installation completed..."