#!/usr/bin/env bash

# This script's purpose is to ease compiling qTox for users.
#
# NO AUTOMATED BUILDS SHOULD DEPEND ON IT.
#
# This script is and will be a subject to breaking changes, and at no time one
# should expect it to work - it's something that you could try to use but
# don't expect that it will work for sure.
#
# If script doesn't work, you should use instructions provided in INSTALL.md
# before reporting issues like “qTox doesn't compile”.
#
# With that being said, reporting that this script doesn't work would be nice.
#
# If you are contributing code to qTox that change its dependencies / the way
# it's being build, please keep in mind that changing just bootstrap.sh
# *IS NOT* and will not be sufficient - you should update INSTALL.md first.

set -eu -o pipefail

# windows check
if cmd.exe /c ver 2>/dev/null ; then
    cd windows
    ./bootstrap.sh
    exit $?
fi


################ 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
TOX_CORE_DIR=libtoxcore-latest
SQLCIPHER_DIR=sqlcipher-stable

# default values for user given parameters
INSTALL_TOX=true
INSTALL_SQLCIPHER=false
SYSTEM_WIDE=true
KEEP_BUILD_FILES=false

# if Fedora, by default install sqlcipher
if which dnf &> /dev/null ; then
    INSTALL_SQLCIPHER=true
fi


########## parse input parameters ##########
while [ $# -ge 1 ] ; do
    if [ ${1} = "--with-tox" ] ; then
        INSTALL_TOX=true
        shift
    elif [ ${1} = "--without-tox" ] ; then
        INSTALL_TOX=false
        shift
    elif [ ${1} = "--with-sqlcipher" ] ; then
        INSTALL_SQLCIPHER=true
        shift
    elif [ ${1} = "--without-sqlcipher" ] ; then
        INSTALL_SQLCIPHER=false
        shift
    elif [ ${1} = "-l" -o ${1} = "--local" ] ; then
        SYSTEM_WIDE=false
        shift
    elif [ ${1} = "-k" -o ${1} = "--keep" ]; then
        KEEP_BUILD_FILES=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 libtoxcore"
        echo ""
        echo "usage:"
        echo "    ${0} PARAMETERS"
        echo ""
        echo "parameters:"
        echo "    --with-tox             : install/update libtoxcore"
        echo "    --without-tox          : do not install/update libtoxcore"
        echo "    --with-sqlcipher       : install/update sqlcipher"
        echo "    --without-sqlcipher    : do not install/update sqlcipher"
        echo "    -h|--help              : displays this help"
        echo "    -l|--local             : install packages into ${INSTALL_DIR}"
        echo "    -k|--keep              : keep build files after installation/update"
        echo ""
        echo "example usages:"
        echo "    ${0}    -- install libtoxcore"
        exit 1
    fi
done


############ print debug output ############
echo "with tox                    : ${INSTALL_TOX}"
echo "with sqlcipher              : ${INSTALL_SQLCIPHER}"
echo "install system-wide         : ${SYSTEM_WIDE}"
echo "keep build files            : ${KEEP_BUILD_FILES}"


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


# remove not needed dirs
remove_build_dirs() {
    rm -rf ${BASE_DIR}/${TOX_CORE_DIR}
    rm -rf ${BASE_DIR}/${SQLCIPHER_DIR}
}


# maybe an earlier run of this script failed
# thus we should remove the cloned repositories
# if exists, otherwise cloning them may fail
remove_build_dirs


############### install step ###############
#install libtoxcore
if [[ $INSTALL_TOX = "true" ]]; then
    git clone https://github.com/irungentoo/toxcore.git \
        ${BASE_DIR}/${TOX_CORE_DIR} --depth 1

    pushd ${BASE_DIR}/${TOX_CORE_DIR}
    ./autogen.sh

    # configure
    if [[ $SYSTEM_WIDE = "false" ]]; then
        ./configure --prefix=${BASE_DIR}
    else
        ./configure
    fi

    # ensure A/V support is enabled
    if ! grep -Fxq "BUILD_AV_TRUE=''" config.log
    then
        echo "A/V support of libtoxcore is disabled but required by qTox.  Aborting."
        echo "Maybe the dev-packages of libopus and libvpx are not installed?"
        exit 1
    fi

    # compile
    make -j $(nproc)

    # install
    if [[ $SYSTEM_WIDE = "false" ]]; then
        make install
    else
        sudo make install
        sudo ldconfig
    fi

    popd
fi


#install sqlcipher
if [[ $INSTALL_SQLCIPHER = "true" ]]; then
    git clone https://github.com/sqlcipher/sqlcipher.git \
        ${BASE_DIR}/${SQLCIPHER_DIR} \
        --depth 1 \
        --branch v3.4.0

    pushd ${BASE_DIR}/${SQLCIPHER_DIR}
    autoreconf -if

    if [[ $SYSTEM_WIDE = "false" ]]; then
        ./configure --prefix="${BASE_DIR}" \
            --enable-tempstore=yes \
            CFLAGS="-DSQLITE_HAS_CODEC"
        make -j$(nproc)
        make install || \
            echo "" && \
            echo "Sqlcipher failed to install locally." && \
            echo "" && \
            echo "Try without \"-l|--local\"" && \
            exit 1
    else
        ./configure \
            --enable-tempstore=yes \
            CFLAGS="-DSQLITE_HAS_CODEC"
        make -j$(nproc)
        sudo make install
        sudo ldconfig
    fi

    popd
fi


############### cleanup step ###############
# remove cloned repositories
if [[ $KEEP_BUILD_FILES = "false" ]]; then
    remove_build_dirs
fi