#!/usr/bin/env bash

# mac only
if [[ "$(uname)" != "Darwin" ]]; then
    echo "macOS/Darwin required" >&2
    exit 1
fi

# vars
PREFIX="${1:-/usr/local}"
CREL=$(echo -e "\r"$(tput el))
if ! MAKEJOBS=$(sysctl -n hw.ncpu 2>/dev/null); then
    MAKEJOBS="4"
fi
SUDO=
TOTAL=6

# functions
function print_fail_and_exit {
    echo -en " [FAIL]\n"
    echo "Logs and temporary files remain at: ${TEMP_DIR:-}" >&2
    exit 1
}

# permissions
mkdir -p "${PREFIX}" >/dev/null 2>&1
if [[ ! -w "${PREFIX}" ]]; then
    if ! sudo -n date >/dev/null 2>&1; then
        echo "sudo is required to install files to ${PREFIX}"
        [[ "${SUDO}" != "" ]] && ${SUDO} -v
    fi
    sudo mkdir -p "${PREFIX}" >/dev/null 2>&1
    if sudo touch "${PREFIX}" >/dev/null 2>&1; then
        SUDO=sudo
    else
        echo "Unable to write to directory: ${PREFIX}" >&2
        exit 1
    fi
fi
PREFIX=$(cd "${PREFIX}" && pwd -P)
PATH_ORIG="${PATH}"
export PATH="${PREFIX}/bin${PATH:+:$PATH}"

# temp dir
TEMP_DIR=$(mktemp -d "${TMPDIR:-/tmp/}toolchain-XXXXXX")
if [[ $? -ne 0 ]]; then
    echo "Unable to create temporary directory" >&2
    exit 1
fi
cd "${TEMP_DIR}"

# download
printf "Downloading [%02i/%02i] %s" "1" "${TOTAL}" "autoconf 2.69"
curl https://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz -o "autoconf-2.69.tar.gz" >/dev/null 2>&1 || print_fail_and_exit
echo -en "${CREL}"
printf "Downloading [%02i/%02i] %s" "2" "${TOTAL}" "automake 1.15"
curl https://ftp.gnu.org/gnu/automake/automake-1.15.1.tar.gz -o "automake-1.15.1.tar.gz" >/dev/null 2>&1 || print_fail_and_exit
echo -en "${CREL}"
printf "Downloading [%02i/%02i] %s" "3" "${TOTAL}" "cmake 3.9.6"
curl https://cmake.org/files/v3.9/cmake-3.9.6.tar.gz -o "cmake-3.9.6.tar.gz" >/dev/null 2>&1 || print_fail_and_exit
echo -en "${CREL}"
printf "Downloading [%02i/%02i] %s" "4" "${TOTAL}" "libtool 2.4.6"
curl https://ftp.gnu.org/gnu/libtool/libtool-2.4.6.tar.gz -o "libtool-2.4.6.tar.gz" >/dev/null 2>&1 || print_fail_and_exit
echo -en "${CREL}"
printf "Downloading [%02i/%02i] %s" "5" "${TOTAL}" "pkg-config 0.29.2"
curl https://pkg-config.freedesktop.org/releases/pkg-config-0.29.2.tar.gz -o "pkg-config-0.29.2.tar.gz" >/dev/null 2>&1 || print_fail_and_exit
echo -en "${CREL}"
printf "Downloading [%02i/%02i] %s" "6" "${TOTAL}" "yasm 1.3.0"
curl https://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz -o "yasm-1.3.0.tar.gz" >/dev/null 2>&1 || print_fail_and_exit
echo -en "${CREL}"
printf "Downloading [%02i/%02i] complete.\n" "${TOTAL}" "${TOTAL}"

# autoconf
cd "${TEMP_DIR}"
printf "Building    [%02i/%02i] %s" "1" "${TOTAL}" "autoconf 2.69"
[[ "${SUDO}" != "" ]] && ${SUDO} -v
tar -xf autoconf-2.69.tar.gz >/dev/null 2>&1 || print_fail_and_exit
cd autoconf-2.69 >/dev/null 2>&1 || print_fail_and_exit
./configure --prefix="${PREFIX}" >../autoconf-2.69.log 2>&1 || print_fail_and_exit
make --jobs="${MAKEJOBS}" >../autoconf-2.69.log 2>&1 || print_fail_and_exit
${SUDO} make install >../autoconf-2.69.log 2>&1 || print_fail_and_exit
echo -en "${CREL}"

# automake
cd "${TEMP_DIR}"
printf "Building    [%02i/%02i] %s" "2" "${TOTAL}" "automake 1.15.1"
[[ "${SUDO}" != "" ]] && ${SUDO} -v
tar -xf automake-1.15.1.tar.gz >/dev/null 2>&1 || print_fail_and_exit
cd automake-1.15.1 >/dev/null 2>&1 || print_fail_and_exit
./configure --prefix="${PREFIX}" >../automake-1.15.1.log 2>&1 || print_fail_and_exit
make --jobs="${MAKEJOBS}" >../automake-1.15.1.log 2>&1 || print_fail_and_exit
${SUDO} make install >../automake-1.15.1.log 2>&1 || print_fail_and_exit
echo -en "${CREL}"

# cmake
cd "${TEMP_DIR}"
printf "Building    [%02i/%02i] %s\n" "3" "${TOTAL}" "cmake 3.9.6"
[[ "${SUDO}" != "" ]] && ${SUDO} -v
echo "You may safely dismiss and ignore any prompt to install Java."
tar -xf cmake-3.9.6.tar.gz >/dev/null 2>&1 || print_fail_and_exit
cd cmake-3.9.6 >/dev/null 2>&1 || print_fail_and_exit
./configure --prefix="${PREFIX}" --no-qt-gui --system-curl >../cmake-3.9.6.log 2>&1 || print_fail_and_exit
make --jobs="${MAKEJOBS}" >../cmake-3.9.6.log 2>&1 || print_fail_and_exit
${SUDO} make install >../cmake-3.9.6.log 2>&1 || print_fail_and_exit

# libtool
cd "${TEMP_DIR}"
printf "Building    [%02i/%02i] %s" "4" "${TOTAL}" "libtool 2.4.6"
[[ "${SUDO}" != "" ]] && ${SUDO} -v
tar -xf libtool-2.4.6.tar.gz >/dev/null 2>&1 || print_fail_and_exit
cd libtool-2.4.6 >/dev/null 2>&1 || print_fail_and_exit
./configure --prefix="${PREFIX}" >../libtool-2.4.6.log 2>&1 || print_fail_and_exit
make --jobs="${MAKEJOBS}" >../libtool-2.4.6.log 2>&1 || print_fail_and_exit
${SUDO} make install >../libtool-2.4.6.log 2>&1 || print_fail_and_exit
echo -en "${CREL}"

# pkg-config
cd "${TEMP_DIR}"
printf "Building    [%02i/%02i] %s" "5" "${TOTAL}" "pkg-config 0.29.2"
[[ "${SUDO}" != "" ]] && ${SUDO} -v
tar -xf pkg-config-0.29.2.tar.gz >/dev/null 2>&1 || print_fail_and_exit
cd pkg-config-0.29.2 >/dev/null 2>&1 || print_fail_and_exit
./configure --prefix="${PREFIX}" --with-internal-glib --disable-host-tool >../pkg-config-0.29.2.log 2>&1 || print_fail_and_exit
make --jobs="${MAKEJOBS}" >../pkg-config-0.29.2.log 2>&1 || print_fail_and_exit
${SUDO} make install >../pkg-config-0.29.2.log 2>&1 || print_fail_and_exit
echo -en "${CREL}"

# yasm
cd "${TEMP_DIR}"
printf "Building    [%02i/%02i] %s" "6" "${TOTAL}" "yasm 1.3.0"
[[ "${SUDO}" != "" ]] && ${SUDO} -v
tar -xf yasm-1.3.0.tar.gz >/dev/null 2>&1 || print_fail_and_exit
cd yasm-1.3.0 >/dev/null 2>&1 || print_fail_and_exit
./configure --prefix="${PREFIX}" >../yasm-1.3.0.log 2>&1 || print_fail_and_exit
make --jobs="${MAKEJOBS}" >../yasm-1.3.0.log 2>&1 || print_fail_and_exit
${SUDO} make install >../yasm-1.3.0.log 2>&1 || print_fail_and_exit
echo -en "${CREL}"

# done
printf "Building    [%02i/%02i] complete.\n" "${TOTAL}" "${TOTAL}"
rm -rf "${TEMP_DIR}"
if [[ "${PREFIX}" != "/usr/local" ]]; then
    echo "bin: ${PREFIX}/bin"
    echo "  add to your shell startup script (${HOME}/.bash_profile):"
    echo "    export PATH=\"${PREFIX}/bin:\${PATH}\""
fi

# restore original PATH
export PATH="${PATH_ORIG}"

exit 0