module Coveralls

def noisy?
  ENV['COVERALLS_NOISY'] || (defined?(@noisy) && @noisy)
end

def push!
  require 'simplecov'
  result = ::SimpleCov::ResultMerger.merged_result
  Coveralls::SimpleCov::Formatter.new.format result
end

def setup!
  # Try to load up SimpleCov.
  @adapter = nil
  if defined?(::SimpleCov)
    @adapter = :simplecov
  else
    begin
      require 'simplecov'
      @adapter = :simplecov if defined?(::SimpleCov)
    rescue StandardError => e
      # TODO: Add error action
      puts e.message
    end
  end
  # Load the appropriate adapter.
  if @adapter == :simplecov
    ::SimpleCov.formatter = Coveralls::SimpleCov::Formatter
    Coveralls::Output.puts('[Coveralls] Set up the SimpleCov formatter.', color: 'green')
  else
    Coveralls::Output.puts("[Coveralls] Couldn't find an appropriate adapter.", color: 'red')
  end
end

def should_run?
  # Fail early if we're not on a CI
  unless will_run?
    Coveralls::Output.puts('[Coveralls] Outside the CI environment, not sending data.', color: 'yellow')
    return false
  end
  if ENV['COVERALLS_RUN_LOCALLY'] || (defined?(@run_locally) && @run_locally)
    Coveralls::Output.puts('[Coveralls] Creating a new job on Coveralls from local coverage results.', color: 'cyan')
  end
  true
end

def start!(simplecov_setting = 'test_frameworks', &block)
  return unless @adapter == :simplecov
  ::SimpleCov.add_filter 'vendor'
  if simplecov_setting
    Coveralls::Output.puts("[Coveralls] Using SimpleCov's '#{simplecov_setting}' settings.", color: 'green')
    if block
      ::SimpleCov.start(simplecov_setting) { instance_eval(&block) }
    else
      ::SimpleCov.start(simplecov_setting)
    end
  elsif block
    Coveralls::Output.puts('[Coveralls] Using SimpleCov settings defined in block.', color: 'green')
    ::SimpleCov.start { instance_eval(&block) }
  else
    Coveralls::Output.puts("[Coveralls] Using SimpleCov's default settings.", color: 'green')
    ::SimpleCov.start
  end
end

def wear!(simplecov_setting = nil, &block)
  setup!
  start! simplecov_setting, &block
end

def wear_merged!(simplecov_setting = nil, &block)
  require 'simplecov'
  @adapter = :simplecov
  ::SimpleCov.formatter = NilFormatter
  start! simplecov_setting, &block
end

def will_run?
  ENV['CI'] || ENV['JENKINS_URL'] || ENV['TDDIUM'] ||
    ENV['COVERALLS_RUN_LOCALLY'] || (defined?(@testing) && @testing)
end