markdown-index

#!/bin/bash
md_dir="$(sed 's/\([^\/]\)$/\1\//g' <<< ${1-"."})"
escaped_md_dir=$(echo "${md_dir}" | sed "s/[!@#$%^&*\/\.-]/\\\&/g")
dir_name=$(basename $(realpath "$md_dir"))
dir_display_name=$(sed "s/[_-]/ /g; s/\(^.\)/\U&/g" <<< "$dir_name")  
echo "Writing index for: $md_dir ($dir_display_name)"

echo "# $dir_display_name" > "$md_dir/index.md"


# First, markdown files
md_files_count=$(\
  find "$md_dir" -maxdepth 1 -type f -name '*.md' -not -name "index.md" \
  | wc -l\
)

if [ "$md_files_count" -gt 0 ]
then
  echo -e "\n## Pages" >>  "$md_dir/index.md"
  echo "Found pages:"
  for file in $(find "$md_dir" -maxdepth 1 -type f -name '*.md' -not -name "index.md" ); do
    page_name=$(sed "s/$escaped_md_dir//g; s/\.md//g" <<< "$file")
    display_name=$(sed "s/[_-]/ /g; s/\(^.\)/\U&/g" <<< "$page_name")  
    echo "$display_name ($file)"
    echo "### [$display_name]($page_name)"  >> "$md_dir/index.md"
  done
fi

# and then dirs
subdircount=$(\
  find "$md_dir" -type f -name 'index.md' -not -path "${md_dir}index.md" \
  | wc -l\
)

if [ "$subdircount" -gt 0 ]
then
  echo -e "\n## Sections" >>  "$md_dir/index.md"
  echo "Found sub indexes:"
  for file in $(find "$md_dir" -maxdepth 2 -type f -name 'index.md' -not -path "${md_dir}index.md"); do
    section_index=$(sed "s/$escaped_md_dir//g; s/\.md//g" <<< "$file")
    display_name=$(dirname "$section_index" | sed "s/\///g; s/[_-]/ /g; s/\(^.\)/\U&/g")  
    echo "$display_name ($file)"
    echo "### [$display_name]($section_index)"  >> "$md_dir/index.md"
  done
fi