MD_FILE="$1"

BASE_DIR="$(pwd)"
TEX_FILE="${BASE_DIR}/latex/$(basename "$MD_FILE" | sed -e 's/\.md$/.latex/')"
BUILD_DIR="${BASE_DIR}/build/$(basename "$MD_FILE" | sed -e 's/\.md$//')"
TEMP_MD_FILE="$BUILD_DIR/$(basename "$MD_FILE")"
TEMP_TEX_FILE="$BUILD_DIR/$(basename "$MD_FILE" | sed -e 's|md$|latex|')"
mkdir -p "$(dirname "$TEMP_MD_FILE")"

cp "$MD_FILE" "$TEMP_MD_FILE"

function download_images() {
    echo "download images for $1"
    for line in $(grep '!\[.*\](https://.*\.png)' "$1" | sed -e 's/ /%20;/g')
    do
        src=$(echo "$line" | sed -e 's/^.*(//' -e 's/).*$//' -e 's/%20;/ /g')
        echo "remote image found: $src"

        mkdir -p "${BASE_DIR}/latex/images"
        name=$(echo "$src" | sed -e 's|^.*/\([^/]*\)$|\1|')
        curl "$src" > "${BASE_DIR}/latex/images/$name"
    done
    echo "download done"
}

for line in $(grep '^!\[.*\](.*\.md)$' "$TEMP_MD_FILE" | sed -e 's/ /%20;/g')
do
    src=$(echo "$line" | sed -e 's/^.*(//' -e 's/).*$//' -e 's/%20;/ /g')
    echo "include found: markdown/$src"

    cp "markdown/$src" "$BUILD_DIR/$src"
    sed -i "$BUILD_DIR/$src" \
        -e 's|\[toc\]||' \
        -e 's|^\[parent\].*$||' \
        -e 's|^# |\\newpage\n# |' \
        -e 's|^## |\\newpage\n## |' \
        -e 's|\[\([^]]*\)\](#\([^)]*\))|[\1](#\L\2)|' \
        -e 's|https://live.kladjes.nl/uploads|../../latex/images|'
    download_images "$BUILD_DIR/$src"

    sed -i "$TEMP_MD_FILE" \
        -e "s/^\!\[.*\]($src)\$/\`\`\`\\{.include shift-heading-level-by=1\\}\n${src}\n\`\`\`/"

done

download_images "$TEMP_MD_FILE"

title="$(grep '^# ' "$MD_FILE" | head -n 1 | sed 's|^# ||')"

sed -i "$TEMP_MD_FILE" \
    -e 's|\[toc\]|\\tableofcontents|' \
    -e 's|^\[parent\].*$||' \
    -e 's|^# .*$||' \
    -e 's|^#||' \
    -e 's|^# |\\newpage\n# |' \
    -e 's|\[\([^]]*\)\](#\([^)]*\))|[\1](#\L\2)|' \
    -e 's|https://live.kladjes.nl/uploads|../../latex/images|'

cd "$BUILD_DIR"
pandoc --lua-filter=../../converters/include-files.lua --to=latex --from=markdown+abbreviations --template "${BASE_DIR}/converters/template.latex" -o "$TEX_FILE" "$(basename "$TEMP_MD_FILE")"
cd "$BASE_DIR"

# for line in $(grep '^!\[.*\](.*\.md)$' "$TEMP_MD_FILE" | sed 's/ /%20;/g')
# do
#     src=$(echo "$line" | sed -e 's/^.*(//' -e 's/).*$//' -e 's/%20;/ /g')

#     sed -i "$TEMP_MD_FILE" \
#         -e "s/^!\[.*\]($src)\$/\\include{$src}/"
# done

sed --in-place \
    -e "s|?title?|$title|" \
    "$TEX_FILE"