#!/usr/bin/env bash
################################################################
#                                                              #
#         Privex's Insight for Litecoin Auto-deployer          #
#                                                              #
#         Deploy's Privex/ltcinsight-docker fully              #
#           automatically (no user interaction)                #
#                                                              #
#                    (C) 2021 Privex Inc.                      #
#                   https://www.privex.io                      #
#                                                              #
#  Official repo: https://github.com/Privex/ltcinsight-docker  #
#                                                              #
################################################################
#
# Usage:
#
#     curl -fsS https://cdn.privex.io/github/ltcinsight-docker/deploy.sh | bash
#
#
################################################################

export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:${PATH}"
export PATH="${HOME}/.local/bin:/snap/bin:${PATH}"

: ${INS_REPO="https://github.com/Privex/ltcinsight-docker.git"}
: ${INS_DIR="${HOME}/ltcinsight-docker"}
: ${INS_VER="master"}
: ${WAITFOR="10"}

em() { >&2 echo -e "$@"; }
hascmd() { command -v "$@" &> /dev/null; }
has_cmd() { hascmd "$@"; }

autosudo() {
    all_args=("$@")
    first_el="${all_args[0]}"
    last_els=("${all_args[@]:1:${#all_args[@]}}")
    last_els_str="$(printf "%q " "${last_els[@]}")"

    if (( EUID != 0 )); then
        if hascmd sudo; then
            sudo -- "$@"
            _ret=$?
        elif hascmd su; then
            su -c "$first_el ${last_els_str}"
            _ret=$?
        else
            em " [!!!] You're not root, and neither 'sudo' nor 'su' are available."
            em " [!!!] Cannot run command: $first_el $last_els_str "
            return 2
        fi
    else
        env -- "$@"
        _ret=$?
    fi
    return $_ret
}


DST_TYPE="" PKG_MGR="" PKG_MGR_INS="" PKG_MGR_UP=""

hascmd apt-get && DST_TYPE="deb" PKG_MGR="apt-get"
[[ -z "$PKG_MGR" ]] && hascmd apt && DST_TYPE="deb" PKG_MGR="apt"
[[ -z "$PKG_MGR" ]] && hascmd dnf && DST_TYPE="rhel" PKG_MGR="dnf"
[[ -z "$PKG_MGR" ]] && hascmd yum && DST_TYPE="rhel" PKG_MGR="yum"
[[ -z "$PKG_MGR" ]] && hascmd pacman && DST_TYPE="arch" PKG_MGR="pacman"
[[ -z "$PKG_MGR" ]] && hascmd apk && DST_TYPE="alp" PKG_MGR="apk"
[[ -z "$PKG_MGR" ]] && hascmd brew && DST_TYPE="osx" PKG_MGR="brew"

if [[ -n "$PKG_MGR" ]]; then
    if [[ "$DST_TYPE" == "deb" ]]; then
        PKG_MGR_INS="${PKG_MGR} install -qy" PKG_MGR_UP="${PKG_MGR} update -qy"
    elif [[ "$DST_TYPE" == "rhel" ]]; then
        PKG_MGR_INS="${PKG_MGR} install -y" PKG_MGR_UP="${PKG_MGR} makecache -y"
    elif [[ "$DST_TYPE" == "alp" ]]; then
        PKG_MGR_INS="${PKG_MGR} add" PKG_MGR_UP="${PKG_MGR} update"
    elif [[ "$DST_TYPE" == "arch" ]]; then
        PKG_MGR_INS="${PKG_MGR} -S --noconfirm" PKG_MGR_UP="${PKG_MGR} -Sy --noconfirm"
    elif [[ "$DST_TYPE" == "osx" ]]; then
        PKG_MGR_INS="${PKG_MGR} install" PKG_MGR_UP="${PKG_MGR} update"
    else
        PKG_MGR=""
    fi
fi

PM_UPDATED=0

autoinst() {
    if hascmd "$1"; then
        return 0
    fi
    em " [...] Program '$1' not found. Installing package(s):" "${@:2}"

    if [[ -n "$PKG_MGR_UP" ]] && (( PM_UPDATED == 0 )); then
        autosudo $PKG_MGR_UP
        _ret=$?
        if (( _ret )); then
           em "     [!!!] Non-zero return code from '$PKG_MGR_UP' - code: $_ret"
           return $_ret
        fi
        em "    +++ Successfully updated package manager '${PKG_MGR}'"
        PM_UPDATED=1
    fi
    
    autosudo $PKG_MGR_INS "${@:2}"

    _ret=$?
    if (( _ret )); then
       em "     [!!!] Non-zero return code from '$PKG_MGR_INS' - code: $_ret"
       return $_ret
    fi
    em "     +++ Successfully installed packages:" "${@:2}"
    return 0
}

em
em "################################################################"
em "#                                                              #"
em "#         Privex's Insight for Litecoin Auto-deployer          #"
em "#                                                              #"
em "#         Deploy's Privex/ltcinsight-docker fully              #"
em "#           automatically (no user interaction)                #"
em "#                                                              #"
em "#                    (C) 2021 Privex Inc.                      #"
em "#                   https://www.privex.io                      #"
em "#                                                              #"
em "#  Official repo: https://github.com/Privex/ltcinsight-docker  #"
em "#                                                              #"
em "################################################################"
em
em
sleep 1
em " !!!!! WARNING !!!!!"
sleep 1
em " >> In $WAITFOR seconds, this script will install Privex's ltcinsight-docker (Litecoin Insight Explorer within Docker)"
em " >> onto your system, which will automatically install various packages as-needed, such as Docker, and Docker Compose."
em " >>"
em " >> !!! PRESS CTRL-C TO CANCEL IF YOU DO NOT WISH TO CONTINUE !!!"

sleep 1
em
em " >> Cloning repo from: $INS_REPO"
em " >> Storing repo at:   $INS_DIR"
sleep 1
em
em " !!!!! WARNING !!!!!"
em
em " ... Waiting $WAITFOR seconds before proceeding ..."

i=$WAITFOR

while (( i > 0 )); do
    if (( i % 3 == 0 )); then
        em " [!!!] $i seconds remaining."
    fi
    sleep 1
    i=$(( i - 1 ))
done

em " [...] Ensuring 'git', 'curl', and 'wget' are installed before we try to clone ltcinsight-docker..."

autoinst git git
autoinst curl curl
autoinst wget wget

em " >>> Cloning ltcinsight-docker ( $INS_REPO ) into directory: $INS_DIR"

git clone -b "$INS_VER" "$INS_REPO" "$INS_DIR"

em "     > Entering folder $INS_DIR"
cd "$INS_DIR"
em "     > Handing off to repository auto-installer script: ${INS_DIR}/init.sh \n"
em
em "     > Thanks for using our project :)"
em "     > Consider purchasing a virtual and/or dedicated server from https://www.privex.io"
em "     > We offer privacy friendly servers for as little as US\$0.99/mo - and we accept crypto! (inc. LTC)"
sleep 2

exec "${INS_DIR}/init.sh"