namespace :yarn do
  desc "Ensure Yarn is installed"
  task :available do
    unless system("yarn --version", out: File::NULL)
      warn(
        "Error: Yarn executable was not detected in the system.".color(:red),
        "Download Yarn at https://yarnpkg.com/en/docs/install".color(:green)
      )
      abort
    end
  end

  desc "Ensure Node dependencies are installed"
  task check: ["yarn:available"] do
    unless system("yarn check --ignore-engines", out: File::NULL)
      warn(
        "Error: You have unmet dependencies. (`yarn check` command failed)".color(:red),
        "Run `yarn install` to install missing modules.".color(:green)
      )
      abort
    end
  end

  desc "Install Node dependencies with Yarn"
  task install: ["yarn:available"] do
    unless system("yarn install --pure-lockfile --ignore-engines")
      abort "Error: Unable to install node modules.".color(:red)
    end
  end

  desc "Remove Node dependencies"
  task :clobber do
    warn "Purging ./node_modules directory".color(:red)
    FileUtils.rm_rf "node_modules"
  end
end

desc "Install Node dependencies with Yarn"
task yarn: ["yarn:install"]