require 'commander'
require_relative './environments'

class ConfigureSemaphore
  attr_accessor :project_name, :environment

  def initialize
    @project_name = File.basename(Dir.getwd)
  end

  # rubocop:disable Metrics/MethodLength
  def call
    return unless semaphore_cli_installed?

    FileUtils.mkdir_p(%w[.semaphore .semaphore/bin])

    write_or_warn('.semaphore/semaphore.yml', render('templates/semaphore/semaphore.yml.erb'))
    %w[master develop testing].each do |environment|
      @environment = environment
      write_or_warn(".semaphore/#{environment}-deploy.yml", render('templates/semaphore/semaphore-deploy.yml.erb'))
    end
    write_or_warn('.semaphore/bin/cache_restore', render('templates/semaphore/bin/cache_restore.erb'))
    write_or_warn('.semaphore/bin/cache_store', render('templates/semaphore/bin/cache_store.erb'))

    create_semaphore_notification
    create_semaphore_secrets
  end
  # rubocop:enable Metrics/MethodLength

  private

  def semaphore_cli_installed?
    semaphore_cli_installed = `sem context | grep '*'`.strip == '* renuo_semaphoreci_com'
    warn('You need to install and configure Semaphore CLI to run this command.') unless semaphore_cli_installed
    semaphore_cli_installed
  end

  def create_semaphore_notification
    system("sem create notifications #{project_name} "\
           "--projects #{project_name} "\
           '--branches "master,develop,testing" '\
           "--slack-channels \"#project-#{project_name}\" "\
           '--slack-endpoint "https://hooks.slack.com/services/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"')
  end

  def create_semaphore_secrets
    system("sem create secret #{project_name}")
  end

  def render(template_file)
    file_path = File.join(File.dirname(__FILE__), template_file)
    semaphore_template = File.read(file_path)
    renderer = ERB.new(semaphore_template)
    renderer.result(binding)
  end

  def write_or_warn(file_path, content)
    if File.exist?(file_path)
      warn("#{file_path} exists already. I will not overwrite it.")
    else
      File.write(file_path, content)
      say("#{file_path} added.")
    end
  end
end