#!/bin/bash

# Simple installer for rpi-clone
#
# Downloads and installs rpi-clone and rpi-clone-setup into /usr/local/sbin
#
# Command to use to install rpi-clone:
#	   curl https://raw.githubusercontent.com/geerlingguy/rpi-clone/master/install | sudo bash
#
# rpi-clone is Copyright (c) 2018-2019 Bill Wilson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted under the conditions of the BSD LICENSE file at
# the rpi-clone github source repository:
#    https://github.com/billw2/rpi-clone

# This updated code is located in a fork of Bill Willsons git repository
# at https://github.com/geerlingguy/rpi-clone

set -uo pipefail

readonly PACKAGE="rpi-clone"
readonly DOWNLOAD_REPOSITORY="https://raw.githubusercontent.com/geerlingguy/rpi-clone/master"
readonly FILES_2_DOWNLOAD"=rpi-clone rpi-clone-setup"
readonly TMP_DIR=$(mktemp -d)
readonly DEFAULT_INSTALLATION_DIR="/usr/local/sbin"

pwd=$PWD
trap "{ cd $pwd; rmdir $TMP_DIR &>/dev/null; }" SIGINT SIGTERM EXIT
cd $TMP_DIR

installDir="${1:-$DEFAULT_INSTALLATION_DIR}"

if [[ ! -d $installDir ]]; then
    echo "Installation directory $installDir not found"
    echo "Pass a valid installation directory as a parameter to $0"
    exit 1
fi

echo "Installing $PACKAGE into $installDir ..."

for file in $FILES_2_DOWNLOAD; do
    echo -n "Downloading $file from $DOWNLOAD_REPOSITORY/$file ... "
    http_code=$(curl -w "%{http_code}" -L -s $DOWNLOAD_REPOSITORY/$file -o $file)
    (($?)) && {
        echo "Curl failed"
        exit 1
    }
    [[ $http_code != 200 ]] && {
        echo "http request failed with $http_code"
        exit 1
    }
    echo "done"
    echo -n "Installing $file into $installDir ... "
    sudo chmod +x $file
    (($?)) && {
        echo "chmod failed"
        exit 1
    }
    sudo mv $file $installDir
    (($?)) && {
        echo "mv failed"
        exit 1
    }
    echo "done"

done

echo "$PACKAGE installed"
cd $pwd