#!/usr/bin/env bash

files="$@"

function create_bin_file
{
cat << EOF > "$bindir/backshift"
#!/usr/bin/env bash

if [ "\$#" = 0 ]
then
    "$which_python" "$prefix"/lib/backshift/backshift
else
    "$which_python" "$prefix"/lib/backshift/backshift "\$@"
fi

EOF
}

if [ -d install-variables ]
then
    prefix=$(cat 'install-variables'/prefix-file)
    bindir=$(cat 'install-variables'/bindir-file)
    which_python=$(cat 'install-variables'/python-file)
    use_cython=$(cat 'install-variables'/use-cython-file)

    mkdir -p "$bindir"
    mkdir -p "$prefix"/lib/backshift

    # Install the pure python modules
    cp $files "$prefix"/lib/backshift/.

    # Optionally install the Cython
    if [ "$use_cython" = "True" ]
    then
        ./build-one-rcm --use-installation-python
        cp rolling_checksum_pyx_mod.so "$prefix"/lib/backshift/.
        # This comes in through argv - we don't want it since we're doing the cython version
        rm "$prefix"/lib/backshift/rolling_checksum_py_mod.py
    fi

    # Install some ancillary scripts
    cp \
        'just-one' \
        'randomize' \
        'most-recent' \
        'find-backup' \
        'backshift-one' \
        'backshift-while' \
        "$bindir"/.

    # Finally, create the frontend bash script and make it executable
    create_bin_file
    chmod 755 "$bindir/backshift"

else
    echo "$0: You must run ./configure before 'make install'" 1>&2
    exit 1
fi