# frozen_string_literal: true

require 'coveralls/version'
require 'coveralls/configuration'
require 'coveralls/api'
require 'coveralls/output'
require 'coveralls/simplecov'

module Coveralls
  class << self
    attr_accessor :adapter, :testing, :noisy, :run_locally
  end

  class NilFormatter
    def format(result); end
  end

  module_function

  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 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
      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 start!(simplecov_setting = 'test_frameworks', &block)
    return if @adapter != :simplecov

    ::SimpleCov.add_filter 'vendor'

    if simplecov_setting
      Coveralls::Output.puts("[Coveralls] Using SimpleCov's '#{simplecov_setting}' settings.", color: 'green')
      if block_given?
        ::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 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 will_run?
    ENV['CI'] || ENV['JENKINS_URL'] || ENV['TDDIUM'] ||
      ENV['COVERALLS_RUN_LOCALLY'] || (defined?(@testing) && @testing)
  end

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