#!/bin/sh

set -e

SOURCE_REPO=$1

SOURCE_BRANCH=$2

DESTINATION_REPO=$3

DESTINATION_BRANCH=$4

if ! echo $SOURCE_REPO | grep -Eq ':|@|\.git\/?$'; then

if [[ -n "$SSH_PRIVATE_KEY" || -n "$SOURCE_SSH_PRIVATE_KEY" ]]; then

SOURCE_REPO="git@github.com:${SOURCE_REPO}.git"

GIT_SSH_COMMAND="ssh -v"

else

SOURCE_REPO="https://github.com/${SOURCE_REPO}.git"

fi

fi

if ! echo $DESTINATION_REPO | grep -Eq ':|@|\.git\/?$'; then

if [[ -n "$SSH_PRIVATE_KEY" || -n "$DESTINATION_SSH_PRIVATE_KEY" ]]; then

DESTINATION_REPO="git@github.com:${DESTINATION_REPO}.git"

GIT_SSH_COMMAND="ssh -v"

else

DESTINATION_REPO="https://github.com/${DESTINATION_REPO}.git"

fi

fi

echo "SOURCE=$SOURCE_REPO:$SOURCE_BRANCH"

echo "DESTINATION=$DESTINATION_REPO:$DESTINATION_BRANCH"

if [[ -n "$SOURCE_SSH_PRIVATE_KEY" ]]; then

# Clone using source ssh key if provided

git clone -c core.sshCommand="/usr/bin/ssh -i ~/.ssh/src_rsa" "$SOURCE_REPO" /root/source --origin source && cd /root/source

# Create an orphaned branch without history

rm -rf ./.git

git init

git config --global user.email "automatic-action@devnull.com"

git config --global user.name "Git Sync Action"

# Removing workflows

rm -rf ./.github

git add -A

git commit -am "handoff"

git branch -m main

echo "Cleared history and created new git folder"

else

git clone "$SOURCE_REPO" /root/source --origin source && cd /root/source

fi

git remote add destination "$DESTINATION_REPO"

if [[ -n "$DESTINATION_SSH_PRIVATE_KEY" ]]; then

# Push using destination ssh key if provided

git config --local core.sshCommand "/usr/bin/ssh -i ~/.ssh/dst_rsa"

fi

git push destination "${SOURCE_BRANCH}:${DESTINATION_BRANCH}" -f