# frozen_string_literal: true

require "rake/testtask"
require "rubocop/rake_task"
require "json"
require "tempfile"


Rake::TestTask.new(:unit) do |t|
	ENV["ENV"] = "test"
	ENV["COVERAGE_NAME"] = "unit"

	t.libs << "test"
	t.libs << "lib"
	t.test_files = FileList["test/**/test_*.rb"].exclude("test/property/**")
	t.warning = false
end

Rake::TestTask.new(:_run_property) do |t|
	t.libs << "test"
	t.libs << "test/property"
	t.libs << "lib"
	t.test_files = FileList["test/property/**/test_*.rb"] +
		FileList["test/stubs/seed_*.rb"]
	t.ruby_opts << "-r failure_reporter"
	t.warning = false
end
Rake::Task[:_run_property].clear_comments

desc "Run property tests (optional seed: rake property[SEED,no-stubs])"
task :property, [:seed, :no_stubs] do |_t, args|
	ENV["SEED"] = (args[:seed] || rand(0xFFFF)).to_i.to_s
	ENV["COVERAGE_NAME"] = "property"
	srand(ENV["SEED"].to_i)

	warn "Property seed: #{ENV['SEED']}"

	stub_path = "test/stubs/seed_#{ENV['SEED']}.rb"
	if args[:seed] && File.exist?(stub_path)
		ENV["TESTOPTS"] = "--seed=#{ENV['SEED']}"
		Rake::TestTask.new(:_run_stub) do |t|
			t.libs << "test"
			t.libs << "test/property"
			t.libs << "lib"
			t.test_files = [stub_path]
			t.warning = false
		end
		Rake::Task[:_run_stub].clear_comments
		Rake::Task[:_run_stub].invoke
		next
	end

	report = Tempfile.new(["failures", ".json"])
	begin
		ENV["FAILURE_REPORT_PATH"] = report.path
		ENV["TESTOPTS"] = "--seed=#{ENV['SEED']}"

		Rake::Task[:_run_property].invoke
	rescue RuntimeError
		unless args[:no_stubs]
			failing = JSON.parse(File.read(report.path))

			mkdir_p "test/stubs"
			comment = failing.map { |n| "# - #{n}" }.join("\n")
			File.write(stub_path, <<~RUBY)
				# frozen_string_literal: true

				# Failing tests:
				#{comment}

				srand(#{ENV['SEED']})
				require_relative "../property/test_webhook_handler"
			RUBY
			warn "\nStub written: #{stub_path}"
			warn "Reproduce:    bundle exec ruby -Itest -Itest/property -Ilib #{stub_path}"
		end
		exit 1
	ensure
		report&.close
		report&.unlink
	end
end

task :test => [:unit, :property]

RuboCop::RakeTask.new(:lint)

task :entr do
	sh "sh", "-c", "git ls-files | entr -s 'rake test && rubocop'"
end

task default: :test