#!/usr/bin/env bash

set -e

normalize_file() {
  if [[ "${1}" == *patch ]]; then
    FILE="${1}"
  else
    FILE="${1}.patch"
  fi

  if [[ "${FILE}" == patches/* ]]; then
    FILE="../${FILE}"
  else
    FILE="../patches/${FILE}"
  fi
}

cd vscode || { echo "'vscode' dir not found"; exit 1; }

git add .
git reset -q --hard HEAD

while [[ -n "$( git log -1 | grep "VSCODIUM HELPER" )" ]]; do
  git reset -q --hard HEAD~
done

git apply --reject "../patches/helper/settings.patch"
git add .
git commit --no-verify -q -m "VSCODIUM HELPER"

while [ $# -gt 1 ]; do
  normalize_file "${1}"

  echo "FILE: ${FILE}"

  if [[ -f "${FILE}" ]]; then
    if [[ -f "${FILE}.bak" ]]; then
      mv -f $FILE{.bak,}
    fi

    git apply --reject "${FILE}" || true
  fi

  while [[ -n "$( find . -name '*.rej' -print )" ]]; do
    echo
    read -rp "Press any key when the conflict have been resolved..." -n1 -s
  done

  shift
done

normalize_file "${1}"

git add .
git diff --staged -U1 > "${FILE}"

if [[ "${FILE}" != "../patches/helper/settings.patch" ]]; then
  git reset -q --hard HEAD
else
  git reset -q --hard HEAD~
fi

echo "The patch has been generated."