Quasi-generic Rails app bootstrapping script.

bootstrap.sh

#!/bin/bash

bold=`tput bold`
normal=`tput sgr0`

Bold() { echo "${bold}---> $1${normal}"; }
Tab()  { echo "     $1"; }
Done() { Tab "Done."; }

# Target Ruby version.
local_ruby_version="1.9.3-p545"

# Required binaries to check for.
BINS=( mysqld )

# Check the presence of a .ruby-version
Bold "Checking for a .ruby-version file..."

if [ -f .ruby-version ]; then
  Tab "You already have a .ruby-version file.";
else
  Tab "Creating a .ruby-version file with version $local_ruby_version..."
  echo $local_ruby_version > .ruby-version;
  Done
fi

# Check that the correct Ruby version is in use.
Bold "Checking that you are using the correct Ruby version..."

if [[ $(ruby -v) =~ ${local_ruby_version/-/} ]]; then
  Tab "You are using the correct Ruby version."
else
  Tab "You are not using the correct Ruby version."
  Tab "Please switch it to $local_ruby_version and run this script again."
  exit 0
fi

# Check for bundler.
Bold "Checking for Bundler..."

if [[ $(bundle version) =~ ^Bundler ]]; then
  Tab "You have Bundler up and running."
else
  Tab "You do not have Bundler installed."
  Tab "Please run 'gem install bundler' and run this script again."
  exit 0
fi

# Alert & exit if a runtime dependency is missing.
Bold "Checking for missing runtime dependencies..."

for (( i=0;i<${#BINS[@]};i++)); do
  bin=${BINS[${i}]}
  if [ -z $(which $bin) ]; then
    Tab "You do not have $bin in your PATH. It is necessary."
    exit 0
  else
    Tab "$bin is present in your PATH."
  fi
done

Tab "Runtime dependencies are all met."

Bold "Installing gem dependencies..."
bundle install
Done

# Create development env file unless it exists.
Bold "Creating a development .env file..."

if [ -f .env.development ]; then
  Tab "You already have a development .env file.";
else
  cp .env.default .env.development;
  Done
fi

# Copy database.yml file unless it exists.
Bold "Creating a development database.yml file..."

if [ -f config/database.yml ]; then
  Tab "You already have a database.yml file.";
else
  cp config/database.default.yml config/database.yml;
  Done
  Tab "Edit it with your correct credentials then run this script again.";
  exit 0;
fi

# Drop development database.
Bold "Dropping existing development database..."
rake db:drop
Done

# Create the database.
Bold "Creating the database..."
rake db:create
Done

# Load the DB schema.
Bold "Loading the database schema..."
rake db:schema:load &> /dev/null
Done

# Create demo data.
Bold "Injecting demo data in the database..."
rake data:demo &> /dev/null
Done

Bold " Finished bootstrapping application."