deploy.sh

#!/bin/bash
set -e # Exit with nonzero exit code if anything fails

SOURCE_BRANCH="master"
TARGET_BRANCH="gh-pages"

function doCompile {

    npm run-script create:docs
    cd docs

    docdir=$(node -e "var json = JSON.parse(process.argv[1]); console.log(json.name);" "$(< ../package.json)")
    docversion=$(node -e "var json = JSON.parse(process.argv[1]); console.log(json.version);" "$(< ../package.json)")
    docpath=$docdir/$docversion

    if [ -z "$docdir" ] || [ -z "$docversion" ] ; then
        echo "Error getting docs path"
        exit 0
    fi

    #test if docs directory exists
    bckpwd=$PWD
    cd $docpath
    cd $bckpwd

    mkdir -p $docversion
    cp -a $docpath/. .
    mv $docpath/** $docversion && rmdir $docpath && rmdir $docdir
    cd .. #set pwd to the original value
}

# Pull requests and commits to other branches shouldn't try to deploy, just build to verify
if [ "$TRAVIS_PULL_REQUEST" != "false" -o "$TRAVIS_BRANCH" != "$SOURCE_BRANCH" ]; then
    echo "Skipping deploy; just doing a build."
    doCompile
    exit 0
fi

# Save some useful information
REPO=`git config remote.origin.url`
SSH_REPO=${REPO/https:\/\/github.com\//git@github.com:}
SHA=`git rev-parse --verify HEAD`

# Clone the existing gh-pages for this repo into docs/
# Create a new empty branch if gh-pages doesn't exist yet (should only happen on first deply)
git clone $REPO docs
cd docs
git checkout $TARGET_BRANCH || git checkout --orphan $TARGET_BRANCH
cd ..

# Clean docs existing contents
rm -rf docs/**/* || exit 0

# Run our compile script
doCompile

#remove everything except the docs and the .git folder
shopt -s extglob                # enables extglob
rm -rf !(docs|.git|..|.)
shopt -u extglob                # disables extglob

# commit generated docs to the gh-pages branch
cd docs
git config user.name "Travis CI"
git config user.email "$COMMIT_AUTHOR_EMAIL"

# If there are no changes to the compiled docs (e.g. this is a README update) then just bail.
if [ -z "`git diff --exit-code`" ]; then
    echo "No changes to the output on this push; exiting."
    exit 0
fi

# Commit the "changes", i.e. the new version.
# The delta will show diffs between new and old versions.
git add .
git commit -m "Deploy to GitHub Pages: ${SHA}"

# Get the deploy key by using Travis's stored variables to decrypt deploy_key.enc
ENCRYPTED_KEY_VAR="encrypted_535ebccb4cfe_key"
ENCRYPTED_IV_VAR="encrypted_535ebccb4cfe_iv"
ENCRYPTED_KEY=${!ENCRYPTED_KEY_VAR}
ENCRYPTED_IV=${!ENCRYPTED_IV_VAR}
eval `ssh-agent -s`
ls -l
openssl aes-256-cbc -K $ENCRYPTED_KEY -iv $ENCRYPTED_IV -in deploy_key.enc -d | ssh-add -
#chmod 600 deploy_key
#eval `ssh-agent -s`
#ssh-add deploy_key

# Now that we're all set up, we can push.
git push $SSH_REPO $TARGET_BRANCH