#!/usr/bin/env bash

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# what:        curae is latin an means to take care. this script takes care
#              of the system (adjusted for arch linux).
# author:      fk
# started:     may 2024
#
# nifty:        https://github.com/dylanaraps/pure-bash-bible
#
# requires:    tree, wget
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

#############################################################################
#
#   WARNING: EXAMINE THE CONTENT BEFORE EXECUTION. RUN AT YOUR OWN RISK.
#
#############################################################################
echo "<< curae.sh >>"

base_url=https://git.mz.fo/fro/lnx-arch/raw/branch/master
scripts_url=${base_url}/scripts
home_dir=/home/.curae
this_file=curae.sh


if [ "$EUID" -ne 0 ]
  then echo "error: run as 'root'"
  exit
fi

this_file_name=`basename "$0"`
if [ $# -lt 1 ]; then
    echo "usage: '$this_file_name { dots | uf / upd-full [host] | sw / software {setup/install} [host] | us / upd-self | wp }'"
    exit 1
fi

operation=$1
parameter_1=$2
parameter_2=$3

shopt -s extglob
case $operation in
    !(dots|uf|upd-full|sw|software|us|upd-self|wp))
        echo "error: unknown operation '$operation'"
        exit
        ;;
esac
shopt -u extglob

# ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

# helper function
execute_script() {
    file=$1
    parameter_1=$2
    parameter_2=$3
    echo "execute: ${file} ${parameter_1} ${parameter_2}"
    wget -q ${scripts_url}/${file} -O /tmp/${file}
    chmod 755 /tmp/*.sh
    /tmp/${file} ${parameter_1} ${parameter_2}
}

# ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

# update dot files
shopt -s extglob
if [ $operation == "dots" ] ; then

    execute_script 99_deploy.sh dots

fi
shopt -u extglob

# install software (update system)
shopt -s extglob
if [ $operation == "sw" ] || [ $operation == "software" ] ; then

    if [ -z "${parameter_2}" ]; then
        parameter_2=$HOSTNAME
    fi

    execute_script 99_software.sh ${parameter_1} ${parameter_2}

fi
shopt -u extglob

# self update, by re-downloading and overwriting itself
shopt -s extglob
if [ $operation == "us" ] || [ $operation == "upd-self" ] ; then

    wget -v ${base_url}/scripts/${this_file} -O ${home_dir}/${this_file}.tmp
    cp ${home_dir}/${this_file}.tmp ${home_dir}/${this_file}
    rm ${home_dir}/${this_file}.tmp
    chmod 755 ${home_dir}/*.sh

fi
shopt -u extglob

# full update: install software and update dots
shopt -s extglob
if [ $operation == "uf" ] || [ $operation == "upd-full" ] ; then

    if [ -z "${parameter_1}" ]; then
        parameter_1=$HOSTNAME
    fi

    if [ -z "${parameter_1}" ]; then
        echo "error: missing host name"
        exit 1
    fi

    ${home_dir}/${this_file} software setup ${parameter_1}
    ${home_dir}/${this_file} dots

fi
shopt -u extglob

# update wallpapers
shopt -s extglob
if [ $operation == "wp" ] ; then

    execute_script 99_deploy.sh wp

fi
shopt -u extglob