# This is pre-build script that cleans up resources and compiles for selected pages, then finally you may combine those subdirectories into one via nginx.

export KEEP_PAGES="Math3200"

# check if environment variable is set
if $KEEP_PAGES == ""; then
    echo "Please set environment variable KEEP_PAGES to the pages you want to keep for microsite building."
    exit 1
fi

echo "Currently compiling pages: ${KEEP_PAGES}"

# Rewrite base _meta.js and next.config.js for export pages
echo "Rewrite base _meta.js and keeping ${KEEP_PAGES}"

cp ./${KEEP_PAGES}/_meta.js ../content/_meta.js

# remove other subdirectories
for dir in ../content/; do
    if [ "$dir" != "${KEEP_PAGES}/" ]; then
        rm -rf $dir
    fi
done

# remove public directory
for dir in ../public/; do
    if [ "$dir" != "${KEEP_PAGES}/" ]; then
        rm -rf $dir
    fi
done

echo "Done clearing up resources and compiling for ${KEEP_PAGES}"

echo "modify next.config.js"

cp ./next.config.js ../next.config.js