#!/usr/bin/env bash
set -ex

GIT_ROOTDIR=$(git rev-parse --show-toplevel)
REMOTE_NAME=${1:-"origin"}
GIT_REPO_URL=$(git -C ${GIT_ROOTDIR} config --get remote.${REMOTE_NAME}.url)
CURRENT_COMMIT=$(git rev-parse HEAD)
COMPARE_HEAD=${2:-"${REMOTE_NAME}/main"}
if [[ $COMPARE_HEAD == "${REMOTE_NAME}/main" ]]; then
  export COMPARE_HASH=$(git rev-parse ${COMPARE_HEAD})
else
  export COMPARE_HASH=$(git rev-parse HEAD~${COMPARE_HEAD})
fi

echo "Commit head: $GIT_REPO_URL/commit/$CURRENT_COMMIT"
echo "Compare link: $GIT_REPO_URL/compare/$COMPARE_HASH...$CURRENT_COMMIT"