#! /bin/bash

function main() {
   set -e

   fill_missing_files
   format_files
   init_git
}

function fill_missing_files() {
   pushd "${1:-/wiki}" > /dev/null 2>&1
   fill_if_missing ./Home.md
   fill_if_missing ./_Header.md
   find ./* -type d | while read -r i; do
      i="${i%/}"
      fill_if_missing "$i.md"
      fill_if_missing "$i/_Header.md"
   done
   rm -f .git/hooks/pre-commit || true
   for i in .git/hooks/pre-commit custom.css custom.js; do
      fill_if_missing ./$i "$(cat /opt/${i##*/})"
   done
   mkdir -p ./uploads-ftp
   cp /opt/favicon.ico . || true
   popd > /dev/null 2>&1
}

function format_files() {
   pushd ${1:-/wiki} > /dev/null 2>&1

   local patterns=('^[0-9][0-9]*\.  *' ' 1. ')
   local f="/tmp/switch"

   find . -type f -name "*.md" | grep -v '\/_[^\/]*.md' | while read -r path; do
      for ((i=0; i<${#patterns[@]}; i+=2)); do
         local from="${patterns[i]}"
         local to="${patterns[i+1]}"
         if [ -n "$(grep "${from// /.}" "$path")" ]; then
            cat "$path" \
               | sed "s/$from/$to/g" \
               > "$f"
            cp "$f" "$path"
         fi
      done
   done

   rm -f "$f"

   popd > /dev/null 2>&1
}

function init_git() {
   pushd ${1:-/wiki} > /dev/null 2>&1
   git config user.email bel@bel.bel
   git config user.name bel
   git add -A :/
   if [ "${JUST_ADD:-""}" != "true" ]; then
      JUST_ADD=true git commit --author="auto <>" -m "routine" || true
   fi
   popd > /dev/null 2>&1
}

function fill_if_missing() {
   local relative_path="$1"
   shift
   mkdir -p "$(dirname "$relative_path")"
   local full_path="$(printf "%s/%s" \
      "$(realpath \
         "$(dirname "$relative_path")" \
      )" \
      "$(basename "$relative_path")" \
   )"
   if [ ! -e "$full_path" ]; then
      if [ "$#" -gt 0 ]; then
         echo "$@" > "$full_path"
      elif [[ "$relative_path" == *"_Header.md" ]]; then
         echo "<<PathSegments()>>" > "$full_path"
      else
         echo "<<ImmediatePages()>>" > "$full_path"
      fi
   fi
   chmod +x "$full_path"
}

if [ "$0" == "${BASH_SOURCE[0]}" ]; then
   main "$@"
fi