#!/usr/bin/env bash

set -euo pipefail

DEV_BRANCH="dev"
MAIN_BRANCH="main"

if ! git rev-parse --verify "$DEV_BRANCH" > /dev/null 2>&1; then
  echo "Branch $DEV_BRANCH does not exist locally!"
  exit 1
fi

git switch "$DEV_BRANCH"

message="$(date --iso-8601=seconds)"
echo "$message"

git add -A
if ! git diff --cached --quiet; then
    git commit -m "$message"
else
  echo "No changes to commit on $DEV_BRANCH."
fi

git fetch origin "$MAIN_BRANCH"
git merge --no-edit "origin/$MAIN_BRANCH"

git push origin "$DEV_BRANCH"

git switch "$MAIN_BRANCH"
git fetch origin "$MAIN_BRANCH"
git merge --no-edit "origin/$MAIN_BRANCH"
git merge --no-edit "$DEV_BRANCH"
git push origin "$MAIN_BRANCH"

git switch "$DEV_BRANCH"