#!/bin/bash

################ parameters ################
# directory where the script is located
SCRIPT_DIR=$( cd $(dirname $0); pwd -P)

# directory where dependencies will be installed
INSTALL_DIR=libs

# just for convenience
BASE_DIR=${SCRIPT_DIR}/${INSTALL_DIR}

# directory names of cloned repositories
SODIUM_DIR=libsodium-0.5.0
TOX_CORE_DIR=libtoxcore-latest

# this boolean describes whether the installation of
# libsodium should be skipped or not
# the default value is 'false' and will be set to 'true'
# if this script gets the parameter -t or --tox
TOX_ONLY=false
GLOBAL=false
KEEP=false

if [ -z "$BASE_DIR" ]; then
    echo "internal error detected!"
    echo "BASE_DIR should not be empty... aborting"
    exit 1
fi

if [ -z "$SODIUM_DIR" ]; then
    echo "internal error detected!"
    echo "SODIUM_DIR should not be empty... aborting"
    exit 1
fi

if [ -z "$TOX_CORE_DIR" ]; then
    echo "internal error detected!"
    echo "TOX_CORE_DIR should not be empty... aborting"
    exit 1
fi



########## check input parameters ##########
while [ $# -ge 1 ] ; do
    if [ ${1} = "-t" -o ${1} = "--tox" ] ; then
        TOX_ONLY=true
        shift
    elif [ ${1} = "-g" -o ${1} = "--global" ] ; then
        GLOBAL=true
        shift
    elif [ ${1} = "-k" -o ${1} = "--keep" ]; then
        KEEP=true
        shift
    else
        if [ ${1} != "-h" -a ${1} != "--help" ] ; then
            echo "[ERROR] Unknown parameter \"${1}\""
            echo ""
        fi
    
		# print help
        echo "Use this script to install/update libsodium and libtoxcore in ${INSTALL_DIR}"
        echo ""
        echo "usage:"
        echo "    ${0} [-t|--tox|-h|--help|-g|--global|-k|--keep]"
        echo ""
        echo "parameters:"
        echo "    -h|--help  : displays this help"
        echo "    -t|--tox   : only install/update libtoxcore"
        echo "                 requires an already installed libsodium"
        echo "    -g|--global: installs libtox* and libsodium globally"
        echo "                 (also disables local configure prefixes)"
        echo "    -k|--keep  : does not delete the build directories afterwards"
        echo ""
        echo "example usages:"
        echo "    ${0}    -- to install libsodium and libtoxcore"
        echo "    ${0} -t -- to update already installed libtoxcore"
        exit 1
	fi
done

echo "Tox only: $TOX_ONLY"
echo "Global  : $GLOBAL"
echo "Keep    : $KEEP"

############### prepare step ###############
# create BASE_DIR directory if necessary
mkdir -p ${BASE_DIR}

# maybe an earlier run of this script failed
# thus we should remove the cloned repositories
# if exists, otherwise cloning them may fail
rm -rf ${BASE_DIR}/${SODIUM_DIR}
rm -rf ${BASE_DIR}/${TOX_CORE_DIR}



############### install step ###############
# clone current master of libsodium and switch to version 0.5.0
# afterwards install libsodium to INSTALL_DIR
# skip the installation if TOX_ONLY is true
if [[ $TOX_ONLY = "false" ]]; then
    git clone git://github.com/jedisct1/libsodium.git ${BASE_DIR}/${SODIUM_DIR}
    pushd ${BASE_DIR}/${SODIUM_DIR}
    git checkout tags/0.5.0
    ./autogen.sh
    
    if [[ $GLOBAL = "false" ]]; then
        ./configure --prefix=${BASE_DIR}/
    else
        ./configure
    fi
    
    make -j2 check
    
    if [[ $GLOBAL = "false" ]]; then
        make install
    else
        sudo make install
    fi
    
    popd
fi

# clone current master of libtoxcore
# make sure to compile with libsodium we just installed to INSTALL_DIR
# afterwards install libtoxcore to INSTALL_DIR
git clone https://github.com/irungentoo/toxcore.git ${BASE_DIR}/${TOX_CORE_DIR}
pushd ${BASE_DIR}/${TOX_CORE_DIR}
./autogen.sh
if [[ $GLOBAL = "false" ]]; then
    ./configure --prefix=${BASE_DIR}/ --with-libsodium-headers=${BASE_DIR}/include --with-libsodium-libs=${BASE_DIR}/lib
else
    ./configure
fi

make -j2

if [[ $GLOBAL = "false" ]]; then
    make install
else
    sudo make install
fi

popd

############### cleanup step ###############
# remove cloned repositories
if [[ $KEEP = "false" ]]; then
    rm -rf ${BASE_DIR}/${SODIUM_DIR}
    rm -rf ${BASE_DIR}/${TOX_CORE_DIR}
fi