First run set-up shell script for a front-end workflow

frontend-setup.sh

#!/bin/bash

# Assumes the following project structure:
#
# myproject/site/.git
# myproject/site/.githooks
# myproject/site/.githooks/pre-commit
# myproject/site/.githooks/post-merge
# myproject/site/.shell
# myproject/site/.shell/frontend-setup.sh (this file)
# myproject/site/public_html
# myproject/site/theme

# Check for dependency presence before attempting to run setup
for dependency in npm ruby sass compass grunt bower
do
    if ! which $dependency > /dev/null; then
        echo -e "\xe2\x9c\x98 Dependency not found: $dependency"
        echo "--- Please install $dependency and try running the setup script again"
        exit;
    fi
done

# Check if we're in the same directory as `.shell`
directory=".shell"
if [ ! -d "$directory" ]
then
    echo "--- Please run this shell file from the project root (site)"
    exit
else
    echo "--- Running initial setup..."
fi

# Check if pre-commit symlink exists and if not, create it
file=".git/hooks/pre-commit"
if [ -h "$file" ]
then
    echo -e "\xe2\x9c\x93 pre-commit git hook symlink already exists"
    echo "--- Moving on..."
else
    echo "--- Creating pre-commit git hook symlink..."
    (cd .git/hooks; ln -s ../../.githooks/pre-commit pre-commit)
    echo -e "\xe2\x9c\x93 Pre-commit git hook symlink created"
    echo "--- Setting execute permissions on pre-commit git hook..."
    (cd .githooks; chmod +x pre-commit)
    echo -e "\xe2\x9c\x93 Execute permissions on pre-commit git hook set"
fi

# Check if post-merge symlink exists and if not, create it
file=".git/hooks/post-merge"
if [ -h "$file" ]
then
    echo -e "\xe2\x9c\x93 post-merge git hook symlink already exists"
    echo "--- Moving on..."
else
    echo "--- Creating post-merge git hook symlink..."
    (cd .git/hooks; ln -s ../../.githooks/post-merge post-merge)
    echo -e "\xe2\x9c\x93 Post-merge git hook symlink created"
    echo "--- Setting execute permissions on post-merge git hook..."
    (cd .githooks; chmod +x post-merge)
    echo -e "\xe2\x9c\x93 Execute permissions on post-merge git hook set"
fi
    
# `npm install` and `npm prune` if the `package.json` file gets changed
echo "--- Installing Node packages..."
(cd theme; npm install && npm prune)
echo -e "\xe2\x9c\x93 Node packages installed"

# `bower install` and `bower prune` if the `bower.json` file gets changed
echo "--- Installing Bower components..."
(cd theme; bower install --allow-root && bower prune --allow-root)
echo -e "\xe2\x9c\x93 Bower components installed"

# Run the build process `grunt`
echo "--- Running the build process..."
(cd theme; grunt)