#!/usr/bin/env bash
set -eu

function color {
  if [[ -t 1 ]]; then
    tput setaf ${1:-7}
  fi
}

function say {
  color 5  # magenta
  echo -e "( ^-^) < $1"
  color
}

function running {
  color 3  # yellow
  echo "[running] \$ $1"
  color
}

say "Start upgrading Firefish!"

# Confirm that the server is stopped
if [[ $# != 1 ]] || [[ $1 != "--no-confirm" ]]; then
  say "Did you stop your server?"
  read -r -p "[Y/n] > " yn
  case "${yn}" in
    [Nn]|[Nn][Oo])
      say "You must stop your server first!"
      exit 1
      ;;
    *)
      say "uwu~ erai erai!\n"
      ;;
  esac
fi

# Pull changes
## git pull
OLD_COMMIT=$(git rev-parse --short HEAD)
say "Currently we're on \`${OLD_COMMIT}\`"

say "Pulling changes from the remote repo..."

running "git checkout -- package.json packages/backend/assets"
git checkout -- package.json packages/backend/assets

running "git pull --ff --no-edit --autostash --strategy-option theirs --ipv4"
git pull --ff --no-edit --autostash --strategy-option theirs --ipv4

NEW_COMMIT=$(git rev-parse --short HEAD)
say "Pulled successfully! Now we're on \`${NEW_COMMIT}\`\n"

## check if the update script itself is updated
say "Checking if the update script itself has been changed by this update..."
if [[ $(git diff ${OLD_COMMIT} ${NEW_COMMIT} update.sh) != "" ]]; 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!\n"
fi

## show messages
for message in neko/messages/*; do
  file=$(basename -- "${message}")
  if [[ ! -f "neko/flags/${file}" ]]; then
    say "There is an important notice!"
    cat "${message}"
    if [[ $# != 1 ]] || [[ $1 != "--no-confirm" ]]; then
      say "Continue? (Are you ready for upgrading?)"
      read -r -p "[y/N] > " yn
      case "${yn}" in
        [Yy]|[Yy][Ee][Ss])
          touch "neko/flags/${file}"
          say "Let's go!"
          say "To read the message again, run: \$ cat ${message}"
          ;;
        *)
          say "Okay, please run this script again when you're ready!"
          exit 1
          ;;
      esac
    fi
  fi
done

## write version info
say "Writing version info to package.json..."

running "sed -i -r 's/\"version\": \"([^+]+).*\",$/\"version\": \"\\1+neko:${NEW_COMMIT:0:7}\",/' package.json"
sed -i -r "s/\"version\": \"([^+]+).*\",$/\"version\": \"\\1+neko:${NEW_COMMIT:0:7}\",/" package.json

say "Done!\n"

# Upgrade
## install dependencies
say "Upgrading dependencies..."

running "corepack prepare pnpm@latest --activate"
corepack prepare pnpm@latest --activate

running "pnpm install --frozen-lockfile"
pnpm install --frozen-lockfile

say "Done!\n"

## build
say "Start building Firefish."
say "It takes some time! Why not brew a cup of cofe?"

running "NODE_OPTIONS=\"--max_old_space_size=3072\" NODE_ENV=\"production\" pnpm run rebuild"
NODE_OPTIONS="--max_old_space_size=3072" NODE_ENV="production" pnpm run rebuild

say "Done! We're almost there.\n"

## prevent migration errors
if [[ ! -f packages/backend/native-utils/built/index.js ]]; then
  say "Something went wrong orz... Gonnya try fixing that."
  running "cp neko/index.js packages/backend/native-utils/built/index.js"
  cp neko/index.js packages/backend/native-utils/built/index.js
else
  say "It's going well so far!\n"
fi

## migrate
say "Database migration time!"

running "NODE_OPTIONS=\"--max_old_space_size=3072\" NODE_ENV=\"production\" pnpm run migrate"
NODE_OPTIONS="--max_old_space_size=3072" NODE_ENV="production" pnpm run migrate

say "Done!\n"

# Done
say "Enjoy your sabakan life~"