#!/bin/sh -l

set -e  # if a command fails it stops the execution
set -u  # script fails if trying to access to an undefined variable

. ./functions.sh

echo "[+] Action start"
getArgs "$@"

if [ -z "$DESTINATION_REPOSITORY_USERNAME" ]
then
	DESTINATION_REPOSITORY_USERNAME="$DESTINATION_GITHUB_USERNAME"
fi

if [ -z "$USER_NAME" ]
then
	USER_NAME="$DESTINATION_GITHUB_USERNAME"
fi

# Verify that there (potentially) some access to the destination repository
# and set up git (with GIT_CMD variable) and GIT_CMD_REPOSITORY
if [ -n "${SSH_DEPLOY_KEY:=}" ]
then
	echo "[+] Using SSH_DEPLOY_KEY"
	sshDeployKey
elif [ -n "${API_TOKEN_GITHUB:=}" ]
then
	echo "[+] Using API_TOKEN_GITHUB"
	githubToken
else
	echo "::error::API_TOKEN_GITHUB and SSH_DEPLOY_KEY are empty. Please fill one (recommended the SSH_DEPLOY_KEY)"
	exit 1
fi


CLONE_DIR=$(mktemp -d)

echo "[+] Git version"
git --version

echo "[+] Enable git lfs"
git lfs install

echo "[+] Cloning destination git repository $DESTINATION_REPOSITORY_NAME"
setupGit

cloneRepo

ls -la "$CLONE_DIR"

TEMP_DIR=$(mktemp -d)
# This mv has been the easier way to be able to remove files that were there
# but not anymore. Otherwise we had to remove the files from "$CLONE_DIR",
# including "." and with the exception of ".git/"
mv "$CLONE_DIR/.git" "$TEMP_DIR/.git"

# $TARGET_DIRECTORY is '' by default
ABSOLUTE_TARGET_DIRECTORY="$CLONE_DIR/$TARGET_DIRECTORY/"

echo "[+] Deleting $ABSOLUTE_TARGET_DIRECTORY"
rm -rf "$ABSOLUTE_TARGET_DIRECTORY"

echo "[+] Creating (now empty) $ABSOLUTE_TARGET_DIRECTORY"
mkdir -p "$ABSOLUTE_TARGET_DIRECTORY"

echo "[+] Listing Current Directory Location"
ls -al

echo "[+] Listing root Location"
ls -al /

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

echo "[+] List contents of $SOURCE_DIRECTORY"
ls "$SOURCE_DIRECTORY"

echo "[+] Checking if local $SOURCE_DIRECTORY exist"
checkSource

echo "[+] Copying contents of source repository folder $SOURCE_DIRECTORY to folder $TARGET_DIRECTORY in git repo $DESTINATION_REPOSITORY_NAME"
cp -ra "$SOURCE_DIRECTORY"/. "$CLONE_DIR/$TARGET_DIRECTORY"
cd "$CLONE_DIR"

echo "[+] Files that will be pushed"
ls -la

ORIGIN_COMMIT="https://$GITHUB_SERVER/$GITHUB_REPOSITORY/commit/$GITHUB_SHA"
COMMIT_MESSAGE="${COMMIT_MESSAGE/ORIGIN_COMMIT/$ORIGIN_COMMIT}"
COMMIT_MESSAGE="${COMMIT_MESSAGE/\$GITHUB_REF/$GITHUB_REF}"

echo "[+] Set directory is safe ($CLONE_DIR)"
# Related to https://github.com/cpina/github-action-push-to-another-repository/issues/64 and https://github.com/cpina/github-action-push-to-another-repository/issues/64
# TODO: review before releasing it as a version
git config --global --add safe.directory "$CLONE_DIR"

switchBranch

echo "[+] Adding git commit"
git add .

echo "[+] git status:"
git status

echo "[+] git diff-index:"
# git diff-index : to avoid doing the git commit failing if there are no changes to be commit
git diff-index --quiet HEAD || git commit --message "$COMMIT_MESSAGE"

echo "[+] Pushing git commit"
# --set-upstream: sets de branch when pushing to a branch that does not exist
git push "$GIT_CMD_REPOSITORY" --set-upstream "$TARGET_BRANCH"