defmodule Pleroma.Config.DeprecationWarningsTest do
  use ExUnit.Case
  use Pleroma.Tests.Helpers

  import ExUnit.CaptureLog

  alias Pleroma.Config
  alias Pleroma.Config.DeprecationWarnings

  describe "simple policy tuples" do
    test "gives warning when there are still strings" do
      clear_config([:mrf_simple],
        media_removal: ["some.removal"],
        media_nsfw: ["some.nsfw"],
        federated_timeline_removal: ["some.tl.removal"],
        report_removal: ["some.report.removal"],
        reject: ["some.reject"],
        followers_only: ["some.followers.only"],
        accept: ["some.accept"],
        avatar_removal: ["some.avatar.removal"],
        banner_removal: ["some.banner.removal"],
        reject_deletes: ["some.reject.deletes"]
      )

      assert capture_log(fn -> DeprecationWarnings.check_simple_policy_tuples() end) =~
               """
               !!!DEPRECATION WARNING!!!
               Your config is using strings in the SimplePolicy configuration instead of tuples. They should work for now, but you are advised to change to the new configuration to prevent possible issues later:

               ```
               config :pleroma, :mrf_simple,
                 media_removal: ["instance.tld"],
                 media_nsfw: ["instance.tld"],
                 federated_timeline_removal: ["instance.tld"],
                 report_removal: ["instance.tld"],
                 reject: ["instance.tld"],
                 followers_only: ["instance.tld"],
                 accept: ["instance.tld"],
                 avatar_removal: ["instance.tld"],
                 banner_removal: ["instance.tld"],
                 reject_deletes: ["instance.tld"]
               ```

               Is now


               ```
               config :pleroma, :mrf_simple,
                 media_removal: [{"instance.tld", "Reason for media removal"}],
                 media_nsfw: [{"instance.tld", "Reason for media nsfw"}],
                 federated_timeline_removal: [{"instance.tld", "Reason for federated timeline removal"}],
                 report_removal: [{"instance.tld", "Reason for report removal"}],
                 reject: [{"instance.tld", "Reason for reject"}],
                 followers_only: [{"instance.tld", "Reason for followers only"}],
                 accept: [{"instance.tld", "Reason for accept"}],
                 avatar_removal: [{"instance.tld", "Reason for avatar removal"}],
                 banner_removal: [{"instance.tld", "Reason for banner removal"}],
                 reject_deletes: [{"instance.tld", "Reason for reject deletes"}]
               ```
               """
    end

    test "transforms config to tuples" do
      clear_config([:mrf_simple],
        media_removal: ["some.removal", {"some.other.instance", "Some reason"}]
      )

      expected_config = [
        {:media_removal, [{"some.removal", ""}, {"some.other.instance", "Some reason"}]}
      ]

      capture_log(fn -> DeprecationWarnings.check_simple_policy_tuples() end)

      assert Config.get([:mrf_simple]) == expected_config
    end

    test "doesn't give a warning with correct config" do
      clear_config([:mrf_simple],
        media_removal: [{"some.removal", ""}, {"some.other.instance", "Some reason"}]
      )

      assert capture_log(fn -> DeprecationWarnings.check_simple_policy_tuples() end) == ""
    end
  end

  test "check_old_mrf_config/0" do
    clear_config([:instance, :rewrite_policy], Pleroma.Web.ActivityPub.MRF.NoOpPolicy)
    clear_config([:instance, :mrf_transparency], true)
    clear_config([:instance, :mrf_transparency_exclusions], [])

    assert capture_log(fn -> DeprecationWarnings.check_old_mrf_config() end) =~
             """
             !!!DEPRECATION WARNING!!!
             Your config is using old namespaces for MRF configuration. They should work for now, but you are advised to change to new namespaces to prevent possible issues later:

             * `config :pleroma, :instance, rewrite_policy` is now `config :pleroma, :mrf, policies`
             * `config :pleroma, :instance, mrf_transparency` is now `config :pleroma, :mrf, transparency`
             * `config :pleroma, :instance, mrf_transparency_exclusions` is now `config :pleroma, :mrf, transparency_exclusions`
             """
  end

  test "move_namespace_and_warn/2" do
    old_group1 = [:group, :key]
    old_group2 = [:group, :key2]
    old_group3 = [:group, :key3]

    new_group1 = [:another_group, :key4]
    new_group2 = [:another_group, :key5]
    new_group3 = [:another_group, :key6]

    clear_config(old_group1, 1)
    clear_config(old_group2, 2)
    clear_config(old_group3, 3)

    clear_config(new_group1)
    clear_config(new_group2)
    clear_config(new_group3)

    config_map = [
      {old_group1, new_group1, "\n error :key"},
      {old_group2, new_group2, "\n error :key2"},
      {old_group3, new_group3, "\n error :key3"}
    ]

    assert capture_log(fn ->
             DeprecationWarnings.move_namespace_and_warn(
               config_map,
               "Warning preface"
             )
           end) =~ "Warning preface\n error :key\n error :key2\n error :key3"

    assert Config.get(new_group1) == 1
    assert Config.get(new_group2) == 2
    assert Config.get(new_group3) == 3
  end

  test "check_media_proxy_whitelist_config/0" do
    clear_config([:media_proxy, :whitelist], ["https://example.com", "example2.com"])

    assert capture_log(fn ->
             DeprecationWarnings.check_media_proxy_whitelist_config()
           end) =~ "Your config is using old format (only domain) for MediaProxy whitelist option"
  end

  test "check_welcome_message_config/0" do
    clear_config([:instance, :welcome_user_nickname], "LainChan")

    assert capture_log(fn ->
             DeprecationWarnings.check_welcome_message_config()
           end) =~ "Your config is using the old namespace for Welcome messages configuration."
  end

  test "check_hellthread_threshold/0" do
    clear_config([:mrf_hellthread, :threshold], 16)

    assert capture_log(fn ->
             DeprecationWarnings.check_hellthread_threshold()
           end) =~ "You are using the old configuration mechanism for the hellthread filter."
  end

  test "check_activity_expiration_config/0" do
    clear_config([Pleroma.ActivityExpiration, :enabled], true)

    assert capture_log(fn ->
             DeprecationWarnings.check_activity_expiration_config()
           end) =~ "Your config is using old namespace for activity expiration configuration."
  end

  describe "check_gun_pool_options/0" do
    test "await_up_timeout" do
      config = Config.get(:connections_pool)
      clear_config(:connections_pool, Keyword.put(config, :await_up_timeout, 5_000))

      assert capture_log(fn ->
               DeprecationWarnings.check_gun_pool_options()
             end) =~
               "Your config is using old setting `config :pleroma, :connections_pool, await_up_timeout`."
    end

    test "pool timeout" do
      old_config = [
        federation: [
          size: 50,
          max_waiting: 10,
          timeout: 10_000
        ],
        media: [
          size: 50,
          max_waiting: 10,
          timeout: 10_000
        ],
        upload: [
          size: 25,
          max_waiting: 5,
          timeout: 15_000
        ],
        default: [
          size: 10,
          max_waiting: 2,
          timeout: 5_000
        ]
      ]

      clear_config(:pools, old_config)

      assert capture_log(fn ->
               DeprecationWarnings.check_gun_pool_options()
             end) =~
               "Your config is using old setting name `timeout` instead of `recv_timeout` in pool settings"
    end
  end
end