#!/usr/bin/env bash

set -euo pipefail

TARGET_BRANCH="${TARGET_BRANCH:-develop}"

if [[ "$#" -gt 0 ]]; then
  TARGET_REPOS=("$@")
else
  TARGET_REPOS=("Ai" "Backend" "SensorHub")
fi

pull_schemas_submodule() {
  local repo_dir="$1"
  local submodule_path="Schemas"
  local submodule_dir="${repo_dir}/${submodule_path}"

  if ! git -C "$repo_dir" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
    echo "Skipping ${repo_dir}: not a git repository."
    return 0
  fi

  if ! git -C "$submodule_dir" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
    echo "Skipping ${repo_dir}: ${submodule_path} submodule is not initialized."
    return 0
  fi

  echo "Updating ${submodule_path} in ${repo_dir} on branch ${TARGET_BRANCH}"
  git -C "$submodule_dir" fetch origin "$TARGET_BRANCH"

  if git -C "$submodule_dir" show-ref --verify --quiet "refs/heads/${TARGET_BRANCH}"; then
    git -C "$submodule_dir" checkout "$TARGET_BRANCH"
  else
    git -C "$submodule_dir" checkout -b "$TARGET_BRANCH" "origin/${TARGET_BRANCH}"
  fi

  git -C "$submodule_dir" pull --ff-only origin "$TARGET_BRANCH"
}

for repo_dir in "${TARGET_REPOS[@]}"; do
  pull_schemas_submodule "$repo_dir"
done

echo "Done."