Cut Github-ready releases for your Sketch files

release.sh

#!/usr/bin/env bash

BASEFILENAME=API-Connect-Patterns
EXTENSIONNAME=sketch
SKETCHFILE=`$BASEFILENAME.$EXTENSIONNAME`

CURRENT_BRANCH=$(git symbolic-ref --short -q HEAD)
CURRENT_VERSION=$(node -e "console.log(require('./package.json').version);")

# Prevent cutting releases from master branch
if [ "$CURRENT_BRANCH" != "master" ]; then
  echo "You may only cut releases from the master branch"
  exit 1
fi

# Check for uncommited changes or untracked files
if ! [[ -z $(git status -s) ]]; then
  echo "Resolve any uncommited changes or untracked files to Git before cutting a release."
  git status -s
  exit 1
fi

# Check for version bumping scheme
if [ -z "$1" ]; then
  echo "A release version or bump type must be specified"
  echo "[<newversion> | major | minor | patch | premajor | preminor | prepatch | prerelease | from-git]"
  exit 1
fi

# Bump version number
npm version $1 --no-git-tag-version -m ""

# Check if the release already exists
GITTAG=$(git ls-remote origin refs/tags/$RELEASE_VERSION)
if [ "$GITTAG" != "" ]; then
  echo "Tag for package.json version already exists, aborting release"
  exit 1
fi

# Export screenshots
sketchtool export artboards --output=$(pwd)/screenshots --formats=jpg --overwriting=yes $SKETCHFILE

# Stage any changes/additions to Git
git add ./screenshots

# Generate versioned archival copy in ./archive
VERSION=$(node -e "console.log(require('./package.json').version);")
RELEASE_VERSION="v$VERSION"
VERSIONED_SKETCHFILENAME=`$BASEFILENAME-$RELEASE_VERSION.$EXTENSIONNAME`
cp ./$SKETCHFILE ./archive/$VERSIONED_SKETCHFILENAME

git commit -am "add screenshots for $RELEASE_VERSION"
git tag -a $RELEASE_VERSION -m "Release $RELEASE_VERSION"
git push origin $RELEASE_VERSION