# frozen_string_literal: true

require_relative "helper"
require "rubygems/command"
require "rubygems/update_suggestion"

class TestUpdateSuggestion < Gem::TestCase
  def setup
    super

    @cmd = Gem::Command.new "dummy", "dummy"
    @cmd.extend Gem::UpdateSuggestion
    @start_time = 1_000_000
    @minute = 60 * 60
    @week = 7 * 24 * @minute
  end

  def with_eligible_environment(**params)
    self.class.with_eligible_environment(**params) do
      yield
    end
  end

  def self.with_eligible_environment(
    tty: true,
    rubygems_version: Gem::Version.new("1.2.3"),
    latest_rubygems_version: Gem::Version.new("2.0.0"),
    ci: false,
    reset_last_update_check: true,
    cmd:
  )
    original_config = Gem.configuration[:prevent_update_suggestion]
    Gem.configuration[:prevent_update_suggestion] = nil
    original_env = ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"]
    ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"] = nil
    original_disable = Gem.disable_system_update_message
    Gem.disable_system_update_message = nil
    Gem.configuration.last_update_check = 0 if reset_last_update_check

    Gem.ui.stub :tty?, tty do
      Gem.stub :rubygems_version, rubygems_version do
        Gem.stub :latest_rubygems_version, latest_rubygems_version do
          Gem::CIDetector.stub :ci?, ci do
            yield
          end
        end
      end
    end
  ensure
    Gem.configuration[:prevent_update_suggestion] = original_config
    ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"] = original_env
    Gem.disable_system_update_message = original_disable
  end

  def test_update_suggestion
    Gem.stub :rubygems_version, Gem::Version.new("1.2.3") do
      Gem.stub :latest_rubygems_version, Gem::Version.new("2.0.0") do
        assert_equal @cmd.update_suggestion, <<~SUGGESTION

          A new release of RubyGems is available: 1.2.3 → 2.0.0!
          Run `gem update --system 2.0.0` to update your installation.

        SUGGESTION
      end
    end
  end

  def test_eligible_for_update
    with_eligible_environment(cmd: @cmd) do
      Time.stub :now, 123_456_789 do
        assert_predicate @cmd, :eligible_for_update?
        assert_equal 123_456_789, Gem.configuration.last_update_check

        # test last check is written to config file
        assert_include File.read(Gem.configuration.state_file_name), "123456789"
      end
    end
  end

  def test_eligible_for_update_is_not_annoying_when_new_version_is_released
    current_version = Gem::Version.new("1.2.0")
    latest_version = current_version

    # checking for first time, it is not eligible since new version
    # is not released yet and stored
    with_eligible_environment(cmd: @cmd, rubygems_version: current_version, latest_rubygems_version: latest_version) do
      Time.stub :now, @start_time do
        refute_predicate @cmd, :eligible_for_update?
        assert_equal @start_time, Gem.configuration.last_update_check
      end
    end

    # checking next week, it is not eligible since new version
    # is not released yet and timestamp is stored
    with_eligible_environment(
      cmd: @cmd,
      rubygems_version: current_version,
      latest_rubygems_version: latest_version,
      reset_last_update_check: false
    ) do
      Time.stub :now, @start_time + @week do
        refute_predicate @cmd, :eligible_for_update?
        assert_equal @start_time + @week, Gem.configuration.last_update_check
      end
    end

    # pretend new version is released
    latest_version = Gem::Version.new("1.3.0")

    # checking later same next week, it is not eligible even new version
    # is released and timestamp is not stored
    with_eligible_environment(
      cmd: @cmd,
      rubygems_version: current_version,
      latest_rubygems_version: latest_version,
      reset_last_update_check: false
    ) do
      Time.stub :now, @start_time + @week + @minute do
        refute_predicate @cmd, :eligible_for_update?
        assert_equal @start_time + @week, Gem.configuration.last_update_check
      end
    end
  end

  def test_eligible_for_update_is_not_annoying_when_not_upgraded
    with_eligible_environment(cmd: @cmd) do
      # checking for first time, it is eligible and stored
      Time.stub :now, @start_time do
        assert_predicate @cmd, :eligible_for_update?
        assert_equal @start_time, Gem.configuration.last_update_check
      end

      # checking minute later is not eligible and not stored
      Time.stub :now, @start_time + @minute do
        refute_predicate @cmd, :eligible_for_update?
        assert_equal @start_time, Gem.configuration.last_update_check
      end

      # checking week later is eligible again and stored
      Time.stub :now, @start_time + @week do
        assert_predicate @cmd, :eligible_for_update?
        assert_equal @start_time + @week, Gem.configuration.last_update_check
      end
    end
  end

  def test_eligible_for_update_prevent_config
    with_eligible_environment(cmd: @cmd) do
      original_config = Gem.configuration[:prevent_update_suggestion]
      Gem.configuration[:prevent_update_suggestion] = true
      refute_predicate @cmd, :eligible_for_update?
    ensure
      Gem.configuration[:prevent_update_suggestion] = original_config
    end
  end

  def test_eligible_for_update_prevent_env
    with_eligible_environment(cmd: @cmd) do
      original_env = ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"]
      ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"] = "yes"
      refute_predicate @cmd, :eligible_for_update?
    ensure
      ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"] = original_env
    end
  end

  def test_eligible_for_update_non_tty
    with_eligible_environment(tty: false, cmd: @cmd) do
      refute_predicate @cmd, :eligible_for_update?
    end
  end

  def test_eligible_for_update_for_prerelease
    with_eligible_environment(rubygems_version: Gem::Version.new("1.0.0-rc1"), cmd: @cmd) do
      refute_predicate @cmd, :eligible_for_update?
    end
  end

  def test_eligible_for_update_disabled_update
    with_eligible_environment(cmd: @cmd) do
      original_disable = Gem.disable_system_update_message
      Gem.disable_system_update_message = "disabled"
      refute_predicate @cmd, :eligible_for_update?
    ensure
      Gem.disable_system_update_message = original_disable
    end
  end

  def test_eligible_for_update_on_ci
    with_eligible_environment(ci: true, cmd: @cmd) do
      refute_predicate @cmd, :eligible_for_update?
    end
  end

  def test_eligible_for_update_unwrittable_config
    with_eligible_environment(cmd: @cmd) do
      Gem.configuration.stub :state_file_writable?, false do
        refute_predicate @cmd, :eligible_for_update?
      end
    end
  end

  def test_eligible_for_update_notification_delay
    with_eligible_environment(cmd: @cmd) do
      Gem.configuration.last_update_check = Time.now.to_i
      refute_predicate @cmd, :eligible_for_update?
    end
  end
end