entrypoint.sh

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

echo "[+] Sync Action Start"

# Parse arguments
SOURCE_DIRECTORY="${1}"
DESTINATION_REPOSITORY="${2}"
TARGET_BRANCH="${3}"
TARGET_DIRECTORY="${4}"
COMMIT_MESSAGE="${5}"
USER_EMAIL="${6}"
USER_NAME="${7}"

# Validate SSH deploy key
if [ -z "${SSH_DEPLOY_KEY:-}" ]; then
    echo "::error::SSH_DEPLOY_KEY secret is required"
    exit 1
fi

# Setup SSH
echo "[+] Configuring SSH"
mkdir -p "$HOME/.ssh"
DEPLOY_KEY_FILE="$HOME/.ssh/deploy_key"
echo "${SSH_DEPLOY_KEY}" > "$DEPLOY_KEY_FILE"
chmod 600 "$DEPLOY_KEY_FILE"

SSH_KNOWN_HOSTS_FILE="$HOME/.ssh/known_hosts"
ssh-keyscan -H github.com > "$SSH_KNOWN_HOSTS_FILE" 2>/dev/null

export GIT_SSH_COMMAND="ssh -i $DEPLOY_KEY_FILE -o UserKnownHostsFile=$SSH_KNOWN_HOSTS_FILE"

GIT_REPOSITORY="git@github.com:${DESTINATION_REPOSITORY}.git"

# Validate source directory
if [ ! -d "$SOURCE_DIRECTORY" ]; then
    echo "::error::Source directory '$SOURCE_DIRECTORY' does not exist"
    exit 1
fi

# Setup git
git config --global user.email "$USER_EMAIL"
git config --global user.name "$USER_NAME"
git config --global http.version HTTP/1.1

# Clone destination repository
CLONE_DIR=$(mktemp -d)
echo "[+] Cloning $DESTINATION_REPOSITORY (branch: $TARGET_BRANCH)"

if ! git clone --single-branch --depth 1 --branch "$TARGET_BRANCH" "$GIT_REPOSITORY" "$CLONE_DIR" 2>/dev/null; then
    echo "::error::Failed to clone repository. Verify the repository exists, branch '$TARGET_BRANCH' exists, and SSH_DEPLOY_KEY has access."
    exit 1
fi

# Prepare target directory
ABSOLUTE_TARGET_DIRECTORY="$CLONE_DIR/$TARGET_DIRECTORY"

# Preserve .git, clear target, and copy source
TEMP_DIR=$(mktemp -d)
mv "$CLONE_DIR/.git" "$TEMP_DIR/.git"

echo "[+] Syncing $SOURCE_DIRECTORY -> $TARGET_DIRECTORY"
rm -rf "$ABSOLUTE_TARGET_DIRECTORY"
mkdir -p "$ABSOLUTE_TARGET_DIRECTORY"
cp -ra "$SOURCE_DIRECTORY"/. "$ABSOLUTE_TARGET_DIRECTORY"

mv "$TEMP_DIR/.git" "$CLONE_DIR/.git"

# Commit and push
cd "$CLONE_DIR"
git config --global --add safe.directory "$CLONE_DIR"

ORIGIN_COMMIT="https://github.com/$GITHUB_REPOSITORY/commit/$GITHUB_SHA"
COMMIT_MESSAGE="${COMMIT_MESSAGE//ORIGIN_COMMIT/$ORIGIN_COMMIT}"

git add .

if git diff-index --quiet HEAD; then
    echo "[+] No changes to commit"
else
    echo "[+] Committing changes"
    git commit --message "$COMMIT_MESSAGE"
    echo "[+] Pushing to $TARGET_BRANCH"
    git push "$GIT_REPOSITORY" "$TARGET_BRANCH"
fi

echo "[+] Sync complete"