#!/usr/bin/env ruby

# This script simplifies the usage of `katapult` by grouping relevant actions
# that the user else had to perform manually.
# See bottom for USAGE.

require_relative '../lib/katapult/util'
require 'bundler'

def pink_puts(*args)
  message = "\n> #{ args.join ' ' }"
  Kernel.puts "\e[35m#{ message }\e[0m" # pink
end

# With clean Bundler env
def run(command)
  Bundler.with_clean_env { system command }
end

case (transform_command = ARGV.shift)
when 'new'
  interactive = !ARGV.delete('--non-interactive')
  app_name = ARGV.shift
  basics_command = 'bundle exec rails generate katapult:basics'

  if interactive
    pink_puts 'Please enter your database user: '
    basics_command << ' --db-user ' << gets.chomp

    pink_puts 'Please enter your database password: '
    basics_command << ' --db-password ' << gets.chomp
  end

  pink_puts 'Creating new Rails application ...'
  run "rails new #{ app_name } --skip-test-unit --skip-bundle --database mysql"

  Dir.chdir app_name

  pink_puts 'Initializing git repository ...'
  run 'git init'
  Katapult::Util.git_commit "rails new #{ app_name }"

  pink_puts 'Installing katapult ...'
  File.open('Gemfile', 'a') do |file|
    file.puts "gem 'katapult'#{ ENV['KATAPULT_GEMFILE_OPTIONS'] }, group: :development"
  end
  run 'bundle install'
  run 'bundle exec rails generate katapult:install'
  Katapult::Util.git_commit 'rails generate katapult:install'

  pink_puts 'Generating katapult basics ...'
  run basics_command
  Katapult::Util.git_commit 'rails generate katapult:basics'

  pink_puts <<-INSTRUCTIONS
Application initialization done.

Next step: Model your application in lib/katapult/application_model.rb and
transform it into code by running `katapult fire`.
  INSTRUCTIONS

when 'fire'
  app_model_path = 'lib/katapult/application_model.rb'
  transform_command = 'bin/rails generate katapult:transform ' + app_model_path

  pink_puts 'Loading katapult ...'
  run transform_command
  Katapult::Util.git_commit transform_command

  pink_puts <<-INSTRUCTIONS
Model transformation done.

Now boot up your development server (e.g. with `rails server`) and try your
kickstarted application in the browser!
  INSTRUCTIONS

else
  puts <<-USAGE
Usage: katapult [new APP_NAME | fire]
Hint: Suppress database credentials prompt with `--non-interactive`
  USAGE
end