#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail

paths=$(git config --file .gitmodules --name-only --get-regexp path | while read -r line; do
  path=$(git config --file .gitmodules --get "${line}")
  url=$(git config --file .gitmodules --get "${line%.*}.url")
  if [[ ${url} == *"karaolidis"* ]]; then
    echo "${path}"
  fi
done)

for path in ${paths}; do
  echo "Processing submodule: ${path}"

  cd "${path}" || exit

  default_branch=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
  git checkout "${default_branch}"
  git fetch upstream
  git merge "upstream/${default_branch}"

  branches=$(git for-each-ref --format='%(refname:short)' refs/heads/ | grep -v "^${default_branch}$")
  for branch in ${branches}; do
    git checkout "${branch}"
    git rebase "${default_branch}"
  done

  git checkout integration
  git push origin --all --force-with-lease
  git push origin --tags --force-with-lease

  cd - > /dev/null || exit
done

echo "All submodules updated successfully."

nix flake update