entrypoint.sh

#!/bin/sh
set -e
set -x

if [ -z "$INPUT_SOURCE_FOLDER" ]
then
  echo "Source folder must be defined"
  return -1
fi

if [ -z $INPUT_PR_TITLE ]
then
    echo "pr_title must be defined"
    return -1
fi


if [ -z $INPUT_COMMIT_MSG ]
then
    echo "commit_msg must be defined"
    return -1
fi

if [ $INPUT_DESTINATION_HEAD_BRANCH == "main" ] || [ $INPUT_DESTINATION_HEAD_BRANCH == "master" ]
then
  echo "Destination head branch cannot be 'main' nor 'master'"
  return -1
fi

if [ -z "$INPUT_PULL_REQUEST_REVIEWERS" ]
then
  PULL_REQUEST_REVIEWERS=$INPUT_PULL_REQUEST_REVIEWERS
else
  PULL_REQUEST_REVIEWERS='-r '$INPUT_PULL_REQUEST_REVIEWERS
fi

HOME_DIR=$PWD
CLONE_DIR=$(mktemp -d)

echo "Setting git variables"
git config --global user.email "$INPUT_USER_EMAIL"
git config --global user.name "$INPUT_USER_NAME"

echo "Cloning destination git repository"
git clone "https://$API_TOKEN_GITHUB@github.com/$INPUT_DESTINATION_REPO.git" "$CLONE_DIR"

echo "Creating folder"
mkdir -p $CLONE_DIR/$INPUT_DESTINATION_FOLDER/
cd "$CLONE_DIR"


BRANCH_EXISTS=$(git show-ref "$INPUT_DESTINATION_HEAD_BRANCH" | wc -l)

echo "Checking if branch already exists"
git fetch -a
if [ $BRANCH_EXISTS == 1 ];
then
    git checkout "$INPUT_DESTINATION_HEAD_BRANCH"
else
    git checkout -b "$INPUT_DESTINATION_HEAD_BRANCH"
fi

echo "Copying files"
rsync -a --delete "$HOME_DIR/$INPUT_SOURCE_FOLDER" "$CLONE_DIR/$INPUT_DESTINATION_FOLDER/"
git add .

if git status | grep -q "Changes to be committed"
then
  git commit --message "$INPUT_COMMIT_MSG"

  if [ $BRANCH_EXISTS == 1 ];
  then
    echo "Pushing git commit"
    git push -u origin HEAD:$INPUT_DESTINATION_HEAD_BRANCH

    echo "Updating pull request"
    CURRENT_BODY=$(gh pr view $INPUT_DESTINATION_HEAD_BRANCH --json body | jq '.body')
    CURRENT_BODY=${CURRENT_BODY:1:${#CURRENT_BODY} - 2}

    gh pr edit $INPUT_DESTINATION_HEAD_BRANCH -b "$CURRENT_BODY & https://github.com/$GITHUB_REPOSITORY/commit/$GITHUB_SHA"
  else
    echo "Pushing git commit"
    git push -u origin HEAD:$INPUT_DESTINATION_HEAD_BRANCH

    echo "Creating a pull request"
    gh pr create -t "$INPUT_PR_TITLE" \
                 -b "https://github.com/$GITHUB_REPOSITORY/commit/$GITHUB_SHA" \
                 -B $INPUT_DESTINATION_BASE_BRANCH \
                 -H $INPUT_DESTINATION_HEAD_BRANCH \
                    $PULL_REQUEST_REVIEWERS
  fi

else
  echo "No changes detected"
fi