# One click install script dumux
DUNE_VERSION=2.6

# check some prerequistes
for PRGRM in git cmake gcc g++ wget paraview pkg-config gnuplot; do
    if ! [ -x "$(command -v $PRGRM)" ]; then
        echo "Error: $PRGRM is not installed." >&2
        exit 1
    fi
done

currentver="$(gcc -dumpversion)"
requiredver="4.9.0"
if [ "$(printf '%s\n' "$requiredver" "$currentver" | sort -V | head -n1)" != "$requiredver" ]; then
    echo "gcc greater than or equal to $requiredver is required!" >&2
    exit 1
fi

# make a new folder containing everything
mkdir $(pwd)/dumux
cd dumux

echo "*********************************************************************************************"
echo "Sucessfully created a folder dumux."
echo "*********************************************************************************************"

echo "*********************************************************************************************"
echo "(0/2) Downloading supplementary files. Make sure to be connected to the internet."
echo "*********************************************************************************************"

# download the install.opts and the test script
if [ ! -f "test_dumux.sh" ]; then
    wget https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course/raw/master/scripts/test_dumux.sh
    chmod +x test_dumux.sh
fi
if [ ! -f "cmake.opts" ]; then
    wget https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course/raw/master/cmake.opts
    chmod +x test_dumux.sh
fi

# get the testing script

echo "*********************************************************************************************"
echo "(1/2) Cloning repositories. This may take a while. Make sure to be connected to the internet."
echo "*********************************************************************************************"
# the core modules
for MOD in common geometry grid localfunctions istl; do
    if [ ! -d "dune-$MOD" ]; then
        git clone -b releases/$DUNE_VERSION https://gitlab.dune-project.org/core/dune-$MOD.git
    else
        echo "Skip cloning dune-$MOD because the folder already exists."
        cd dune-$MOD
        git checkout releases/$DUNE_VERSION
        cd ..
    fi
done

# extension modules
for MOD in dune-foamgrid dune-alugrid; do
    if [ ! -d "$MOD" ]; then
        git clone -b releases/$DUNE_VERSION https://gitlab.dune-project.org/extensions/$MOD.git
    else
        echo "Skip cloning $MOD because the folder already exists."
        cd $MOD
        git checkout releases/$DUNE_VERSION
        cd ..
    fi
done

# dune-subgrid
if [ ! -d "dune-subgrid" ]; then
    git clone -b releases/$DUNE_VERSION-1 https://git.imp.fu-berlin.de/agnumpde/dune-subgrid.git
else
    echo "Skip cloning dune-subgrid because the folder already exists."
    cd dune-subgrid
    git checkout releases/$DUNE_VERSION-1
    cd ..
fi

# dumux
if [ ! -d "dumux" ]; then
    git clone -b master https://git.iws.uni-stuttgart.de/dumux-repositories/dumux.git
else
    echo "Skip cloning dumux because the folder already exists."
    cd dumux
    git checkout dumux-course-2018
    cd ..
fi

# dumux-course
if [ ! -d "dumux-course" ]; then
    git clone https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course.git
else
    echo "Skip cloning dumux-course because the folder already exists."
fi

if [ $? -ne 0 ]; then
    echo "*********************************************************************************************"
    echo "Failed to clone the repositories."
    echo "*********************************************************************************************"
    exit $?
fi

echo "*********************************************************************************************"
echo "(2/2) Configure dune modules and dumux. Build the dune libaries. This may take several minutes."
echo "*********************************************************************************************"
# run build
./dune-common/bin/dunecontrol --opts=cmake.opts all
#
if [ $? -ne 0 ]; then
    echo "*********************************************************************************************"
    echo "Failed to build the dune libaries."
    echo "*********************************************************************************************"
    exit $?
fi

# echo result
echo "*********************************************************************************************"
echo "Succesfully configured and built dune and dumux."
echo "Please change to the dumux folder and run the test_dumux.sh script to confirm everything works."
echo "*********************************************************************************************"