#!/bin/sh

# run and handle the irc client

# shellcheck source=../conf/default.conf
. "${0%/*}/../conf/default.conf"

# start ii if it is not running
if ! pgrep -x ii > /dev/null; then
  rm -rf --one-file-system "${irc_dir}"
  screen -S ii -d -m ii -s irc.freenode.net -f buildmaster -n buildmaster
  sleep 10
fi

# register if not yet done
if tail -n1 "${irc_dir}/nickserv/out" 2> /dev/null | \
  grep -qF 'This nickname is registered. Please choose a different nickname'; then
  printf 'identify %s\n' "${irc_password}" | \
    sponge "${irc_dir}/nickserv/in"
fi

# join #archlinux32 if not yet done
if ! grep ' buildmaster\.archlinux32\.org .* buildmaster$' "${irc_dir}/out" | \
  tail -n1 | \
  grep -q ' #archlinux32 '; then
  {
    echo '/j #archlinux32'
    echo '/WHO buildmaster'
  } | \
    sponge "${irc_dir}/in"
fi

# start watch daemon if not running yet
if ! pgrep -f '/ii-connect watch$' > /dev/null; then
  screen -S ii-connect.watch -d -m "${base_dir}/bin/ii-connect" watch
fi

# watch if asked to
if [ "$1" = 'watch' ]; then
  done_something=false
  while pgrep -x 'ii' > /dev/null; do
    # this avoids missing modifications during our last execution
    if ! ${done_something}; then
      # shellcheck disable=SC2046
      inotifywait -e 'CLOSE_WRITE,CLOSE' $(
        find "${irc_dir}" \
          -type f \
          -name 'out'
        )
    fi
    done_something=false
    find "${irc_dir}" \
      -type f \
      -name 'out' \
      -printf '%p\n' | \
      while read -r out_file; do
        channel="${out_file%/out}"
        channel="${channel##*/}"
        if [ -z "${channel%%#*}" ]; then
          prefix='buildmaster: '
        else
          prefix=''
        fi
        regex='^\(\S\+ \)\?\S\+ <\S\+> '"${prefix}"'why[- ]don'"'"'\?t[- ]you \(build\|stabilize\|unstage\|keep\|stubbornly_keep\) '
        if grep -q "${regex}" "${out_file}"; then
          done_something=true
          sed -n '
            s/'"${regex}"'/\2 /
            T
            p
          ' "${out_file}" | \
            while read -r line; do
              reason=$(
                echo "${line}" | \
                  xargs "${base_dir}/bin/why-dont-you" 2>&1
              )
              if [ "$(echo "${reason}" | wc -l)" -le 5 ]; then
                echo "${reason}"
              else
                echo "${reason}" | \
                  head -n5
                printf '... (%s lines total)\n' "$(echo "${reason}" | wc -l)"
              fi | \
                sponge "${out_file%/out}/in"
            done
          sed -i "/${regex}/d" "${out_file}"
        fi
        regex='^\(\S\+ \)\?\S\+ <\S\+> '"${prefix}"'wtf '
        if grep -q "${regex}" "${out_file}"; then
          done_something=true
          sed -n '
            s/'"${regex}"'//
            T
            p
          ' "${out_file}" | \
            while read -r line; do
              if ! reason=$(pkgfile "${line}"); then
                reason="Huh, I don't know that one."
              fi
              if [ "$(echo "${reason}" | wc -l)" -le 5 ]; then
                echo "${reason}"
              else
                echo "${reason}" | \
                  head -n5
                printf '... (%s lines total)\n' "$(echo "${reason}" | wc -l)"
              fi | \
                sponge "${out_file%/out}/in"
            done
          sed -i "/${regex}/d" "${out_file}"
        fi
      done
    sleep 1
  done
  exit
fi