require 'stringio'

# put in here all foodsoft tasks
# => :environment loads the environment an gives easy access to the application

module Colors
  def colorize(text, color_code)
    "\033[#{color_code}m#{text}\033[0m"
  end

  {
    black: 30,
    red: 31,
    green: 32,
    yellow: 33,
    blue: 34,
    magenta: 35,
    cyan: 36,
    white: 37
  }.each do |key, color_code|
    define_method key do |text|
      colorize(text, color_code)
    end
  end
end
include Colors

namespace :foodsoft do
  desc 'Setup foodsoft'
  task :setup_development do
    puts yellow 'This task will help you get your foodcoop running in development.'
    setup_bundler
    setup_app_config
    setup_development
    setup_database
    setup_storage
    start_mailcatcher
    puts yellow 'All done! Your foodsoft setup should be running smoothly.'
    start_server
  end

  desc 'Setup foodsoft'
  task :setup_development_docker do
    puts yellow 'This task will help you get your foodcoop running in development via docker.'
    setup_app_config
    setup_development
    setup_storage
    setup_run_rake_db_setup
    puts yellow 'All done! Your foodsoft setup should be running smoothly via docker.'
  end

  namespace :setup do
    desc 'Initialize stock configuration'
    task :stock_config do
      setup_app_config
      setup_storage
      setup_development
    end
  end
end

def setup_bundler
  puts yellow 'Installing bundler if not installed...'
  %x(if [ -z `which bundle` ]; then gem install bundler --no-rdoc --no-ri; fi)
  puts yellow 'Executing bundle install...'
  `bundle install`
end

def setup_database
  file = 'config/database.yml'
  if ENV['DATABASE_URL']
    puts blue 'DATABASE_URL found, please remember to also set it when running Foodsoft'
    return nil
  end
  return nil if skip?(file)

  database = ask("What kind of database do you use?\nOptions:\n(1) MySQL\n(2) SQLite", %w[1 2])
  if database == '1'
    puts yellow 'Using MySQL...'
    `cp -p #{Rails.root.join("#{file}.MySQL_SAMPLE")} #{Rails.root.join(file)}`
  elsif database == '2'
    puts yellow 'Using SQLite...'
    `cp -p #{Rails.root.join("#{file}.SQLite_SAMPLE")} #{Rails.root.join(file)}`
  end

  reminder(file)

  puts blue 'IMPORTANT:  Edit (rake-generated) config/database.yml with valid username and password for EACH env before continuing!'
  finished = ask("Finished?\nOptions:\n(y) Yes", ['y'])
  setup_run_rake_db_setup if finished
end

def setup_run_rake_db_setup
  Rake::Task['db:setup'].reenable
  db_setup = capture_stdout { Rake::Task['db:setup'].invoke }
  puts db_setup
end

def setup_app_config
  file = 'config/app_config.yml'
  sample = Rails.root.join("#{file}.SAMPLE")
  return nil if skip?(file)

  puts yellow "Copying #{file}..."
  `cp -p #{sample} #{Rails.root.join(file)}`
  reminder(file)
end

def setup_development
  file = 'config/environments/development.rb'
  return nil if skip?(file)

  puts yellow "Copying #{file}..."
  `cp -p #{Rails.root.join("#{file}.SAMPLE")} #{Rails.root.join(file)}`
  reminder(file)
end

def setup_storage
  file = 'config/storage.yml'
  return nil if skip?(file)

  puts yellow "Copying #{file}..."
  `cp -p #{Rails.root.join("#{file}.SAMPLE")} #{Rails.root.join(file)}`
  reminder(file)
end

def start_mailcatcher
  return nil if ENV['MAILCATCHER_PORT'] # skip when it has an existing Docker container

  mailcatcher = ask("Do you want to start mailcatcher?\nOptions:\n(y) Yes\n(n) No", %w[y n])
  return unless mailcatcher === 'y'

  puts yellow 'Starting mailcatcher at http://localhost:1080...'
  `mailcatcher`
end

def start_server
  puts blue "Start your server running 'bundle exec rails s' and visit http://localhost:3000"
end

# Helper Methods

def ask(question, answers = false)
  puts question
  input = STDIN.gets.chomp
  if input.blank? || (answers && !answers.include?(input))
    puts red 'Your Input is not valid. Try again!'
    input = ask(question, answers)
  end
  input
end

def skip?(file)
  output = false
  if File.exist?(Rails.root.join(file))
    skip = ask(cyan("We found #{file}!\nOptions:\n(1) Skip step\n(2) Force rewrite"),
               %w[1 2])
  end
  output = true if skip == '1'
  output
end

def reminder(file)
  puts blue "don't forget to edit #{file}"
end

def capture_stdout
  s = StringIO.new
  $stdout = s
  yield
  s.string
ensure
  $stdout = STDOUT
end