#! /bin/bash

echo "Releasing to crates.io:"

echo -en "  Checking git status..."
git status -s | grep -E ' M |\?\?' &&
  echo " BAILING OUT: git is not clean -- commit and push pending changes before running this command" &&
  exit 1
echo " OK"

echo -en "  Getting unpublished version stated in Cargo.tom..."
UNPUBLISHED_VERSION=`grep --max-count 1 version Cargo.toml | sed 's|[^"]*"\(.*\)"|\1|'`
echo " ${UNPUBLISHED_VERSION} OK"

echo -en "  Publishing to crates.io:"
cargo publish || exit 1

echo -en "  Pushing new tag to git..."
git tag -a "${UNPUBLISHED_VERSION}" -m "as released to crates.io" &&
  git push origin --tags &&
  echo " OK" || echo " FAILED"

echo -en "  Preparing Cargo.toml for next version..."
V_PREFIX=`echo ${UNPUBLISHED_VERSION} | sed "s|\(.*\.\)\(.*\)|\1|"`
V_SUFFIX=`echo ${UNPUBLISHED_VERSION} | sed "s|\(.*\.\)\(.*\)|\2|"`
NEXT_V_SUFFIX=$((V_SUFFIX+1))
NEXT_VERSION="${V_PREFIX}${NEXT_V_SUFFIX}"
echo -en " from ${UNPUBLISHED_VERSION} to ${NEXT_VERSION}..."
  sed -i "s|version\( *\)= \"${UNPUBLISHED_VERSION}\"|version\1= \"${NEXT_VERSION}\"|" Cargo.toml &&
  echo " OK" || echo " FAILED"

echo -en "  Committing & pushing Cargo.toml new version change..."
git add Cargo.toml &&
  git commit -m "crate's next version after publishing to crates.io" &&
  git push &&
  echo " OK" || echo " FAILED"

echo "DONE"