deploy

#!/bin/bash

GH_PAGESBRANCH=gh-pages
GH_REMOTE=origin

# get current git branch name - should throw an error if in a detached state
current_branch_name="$(git symbolic-ref --short HEAD)"

giveup_message () {
    echo "\n"
    echo "You're now in an orphaned test deploy branch."
    echo "To get back to normal you can run the following:"
    echo "    git checkout -f $current_branch_name"
    echo "    git clean -f"
    echo "    git branch -D $GH_PAGESBRANCH" 
}

echo "*****************************************************************"
echo "WARNING! This script will remove the local $GH_PAGESBRANCH branch,"
echo "build the notebook files into HTML, then push to remote gh-pages"
echo "located here: $GH_REMOTE/gh-pages."
echo
echo "Make sure you have no uncommitted changes in your current branch"
echo "as these may be overwritten!"
echo
read -p "Are you sure you want to do this? [y/N] " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]
then
    # first run the notebooks
    OUTPUT=`python prepare_deploy.py run`
    if [[ $OUTPUT == *ERROR* ]]
    then
        echo "Error running notebook files!";
        exit;
    fi

    # then convert the notebooks to HTML
    OUTPUT=`python prepare_deploy.py convert`
    if [[ $OUTPUT == *ERROR* ]]
    then
        echo "Error converting notebook files to HTML!";
        exit;
    fi

    # remove the old $GH_PAGESBRANCH branch
    OUTPUT=`git branch -D $GH_PAGESBRANCH`
    if [[ $OUTPUT == *fatal* ]]
    then
        echo "Error deleting branch '$GH_PAGESBRANCH'.";
        exit;
    fi

    # Create a new "orphaned" branch -- we don't need history for
    # the built products
    git checkout --orphan $GH_PAGESBRANCH

    # Copy the built files to a tmp location
    cp -R html _tmp

    # This will delete all of the git-managed files here
    git rm -rf .

    # Now copy the html back into here
    cp -R _tmp/* .
    rm -rf _tmp

    git add *.html
    git add images
    git add css
    git commit -m "Generated from sources"

    read -p "Would you like to preview the rendered HTML? [y/N] " -n 1 -r
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        echo
        echo
        open index.html
    else
        echo
    fi

    read -p "Are you sure you want to push to the remote branch '$GH_PAGESBRANCH' on the remote '$GH_REMOTE'? [y/N] " -n 1 -r
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        echo
        git ls-remote --exit-code $GH_REMOTE > /dev/null 2> /dev/null
        while [[ $? != 0 ]]
        do
            read -p "Could not communicate with remote '$GH_REMOTE'.  Enter an alternate remote name (or 'quit' to give up):" -r
            if [[ $REPLY = "quit" ]]; then
                giveup_message
                exit  
            fi
            GH_REMOTE=$REPLY

            git ls-remote --exit-code $GH_REMOTE > /dev/null 2> /dev/null
        done

        echo "Pushing to '$GH_PAGESBRANCH' on remote '$GH_REMOTE'"
        git push -f $GH_REMOTE $GH_PAGESBRANCH

        git checkout -f $current_branch_name
        git clean -f
        git branch -D $GH_PAGESBRANCH
    else
        giveup_message
    fi
fi