#! /bin/bash

main() (
   set -ueo pipefail

   if [ ! -f ./raw.md ]; then
      wget -q -O ./raw.md https://raw.githubusercontent.com/ZachGoldberg/Startup-CTO-Handbook/main/StartupCTOHandbook.md
   fi

   rm ./src/*

   printf "# Summary\n\n" > ./src/SUMMARY.md

   cat ./raw.md \
   | (
      n=0
      while read -r line; do
         n=$((n+1))
         depth="$(echo "$line" | grep -o '^##*')"
         (
            echo n=$n
            echo line="$line"
            echo depth=$depth
         ) >&2
         if ((n>20)); then
            break
         fi
      done
   )

   mdbook build
)

if [ "$0" == "$BASH_SOURCE" ]; then
   main "$@"
   ret=$?
   echo ret=$? >&2
   exit $ret
fi