#!/bin/sh
set -eu

. neko/update/utils

say 'Start upgrading Firefish!'
br

# Pull changes
## git pull
OLD_COMMIT=$(git rev-parse --short HEAD)

say 'Pulling changes from the remote repo...'
run 'git checkout -- package.json packages/backend/assets'
run 'git pull --ff --no-edit --autostash --strategy-option theirs'

NEW_COMMIT=$(git rev-parse --short HEAD)

if [ "${OLD_COMMIT}" != "${NEW_COMMIT}" ]; then
  run "git log --reverse --format='%s (by %an)' ${OLD_COMMIT}..${NEW_COMMIT} > neko/volume/CHANGELOG"
fi

say 'Pulled successfully!'
br

## check if the update script itself is updated
say 'Checking if the update script itself has been modified by this update...'
if [ "$(git diff "${OLD_COMMIT}" "${NEW_COMMIT}" update.sh neko/update)" != '' ]; then
  say 'Oh meow, that seems to be the case.'
  say "I'm sorry to bother you, but please run this script again!"
  exit 1
else
  say 'This script seems to be up-to-date!'
  br
fi

## show messages
for message in neko/messages/*; do
  file=$(basename -- "${message}")

  case "${file}" in
    *'.resolved') ;;
    *)
      if [ ! -f "neko/flags/${file}" ]; then
        if [ "$#" != '1' ] || [ "$1" != '--skip-all-confirmations' ]; then
          say 'There is an important notice!'
          cat "${message}"

          say 'Continue? (Are you ready for upgrading?)'
          printf '[y/N] > '
          read -r yn

          case "${yn}" in
            [Yy]|[Yy][Ee][Ss])
              touch "neko/flags/${file}"
              say "Let's go!"
              say "To read the message again, run: \$ cat ${message}"
              br
              ;;
            *)
              say "Okay, please run this script again when you're ready!"
              exit 1
              ;;
          esac
        else
          touch "neko/flags/${file}"
        fi
      fi
    ;;
  esac
done

say 'Do you use Docker?'
printf '[y/N] > '
read -r yn

case "${yn}" in
  [Yy]|[Yy][Ee][Ss])
    ./neko/update/docker.sh "$@"
    ;;
  *)
    ./neko/update/native.sh "$@"
    ;;
esac

# Done
say 'Enjoy your sabakan life~'