# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only

defmodule Pleroma.Web.CommonAPI.UtilsTest do
  alias Pleroma.Builders.UserBuilder
  alias Pleroma.Web.CommonAPI
  alias Pleroma.Web.CommonAPI.ActivityDraft
  alias Pleroma.Web.CommonAPI.Utils
  use Pleroma.DataCase

  import ExUnit.CaptureLog
  import Pleroma.Factory

  @public_address "https://www.w3.org/ns/activitystreams#Public"

  describe "add_attachments/2" do
    setup do
      name =
        "Sakura Mana – Turned on by a Senior OL with a Temptating Tight Skirt-s Full Hipline and Panty Shot- Beautiful Thick Thighs- and Erotic Ass- -2015- -- Oppaitime 8-28-2017 6-50-33 PM.png"

      attachment = %{
        "url" => [%{"href" => URI.encode(name)}]
      }

      %{name: name, attachment: attachment}
    end

    test "it adds attachment links to a given text and attachment set", %{
      name: name,
      attachment: attachment
    } do
      len = 10
      clear_config([Pleroma.Upload, :filename_display_max_length], len)

      expected =
        "<br><a href=\"#{URI.encode(name)}\" class='attachment'>#{String.slice(name, 0..len)}…</a>"

      assert Utils.add_attachments("", [attachment]) == expected
    end

    test "doesn't truncate file name if config for truncate is set to 0", %{
      name: name,
      attachment: attachment
    } do
      clear_config([Pleroma.Upload, :filename_display_max_length], 0)

      expected = "<br><a href=\"#{URI.encode(name)}\" class='attachment'>#{name}</a>"

      assert Utils.add_attachments("", [attachment]) == expected
    end
  end

  describe "it confirms the password given is the current users password" do
    test "incorrect password given" do
      {:ok, user} = UserBuilder.insert()

      assert Utils.confirm_current_password(user, "") == {:error, "Invalid password."}
    end

    test "correct password given" do
      {:ok, user} = UserBuilder.insert()
      assert Utils.confirm_current_password(user, "test") == {:ok, user}
    end
  end

  describe "format_input/3" do
    test "works for bare text/plain" do
      text = "hello world!"
      expected = "hello world!"

      {output, [], []} = Utils.format_input(text, "text/plain")

      assert output == expected

      text = "hello world!\n\nsecond paragraph!"
      expected = "hello world!<br><br>second paragraph!"

      {output, [], []} = Utils.format_input(text, "text/plain")

      assert output == expected
    end

    test "works for bare text/html" do
      text = "<p>hello world!</p>"
      expected = "<p>hello world!</p>"

      {output, [], []} = Utils.format_input(text, "text/html")

      assert output == expected

      text = "<p>hello world!</p><br/>\n<p>second paragraph</p>"
      expected = "<p>hello world!</p><br/>\n<p>second paragraph</p>"

      {output, [], []} = Utils.format_input(text, "text/html")

      assert output == expected
    end

    test "works for bare text/markdown" do
      text = "**hello world**"
      expected = "<p><strong>hello world</strong></p>"

      {output, [], []} = Utils.format_input(text, "text/markdown")

      assert output == expected

      text = "**hello world**\n\n*another paragraph*"
      expected = "<p><strong>hello world</strong></p><p><em>another paragraph</em></p>"

      {output, [], []} = Utils.format_input(text, "text/markdown")

      assert output == expected

      text = """
      > cool quote

      by someone
      """

      expected = "<blockquote><p>cool quote</p></blockquote><p>by someone</p>"

      {output, [], []} = Utils.format_input(text, "text/markdown")

      assert output == expected
    end

    test "works for bare text/bbcode" do
      text = "[b]hello world[/b]"
      expected = "<strong>hello world</strong>"

      {output, [], []} = Utils.format_input(text, "text/bbcode")

      assert output == expected

      text = "[b]hello world![/b]\n\nsecond paragraph!"
      expected = "<strong>hello world!</strong><br><br>second paragraph!"

      {output, [], []} = Utils.format_input(text, "text/bbcode")

      assert output == expected

      text = "[b]hello world![/b]\n\n<strong>second paragraph!</strong>"

      expected =
        "<strong>hello world!</strong><br><br>&lt;strong&gt;second paragraph!&lt;/strong&gt;"

      {output, [], []} = Utils.format_input(text, "text/bbcode")

      assert output == expected
    end

    test "works for text/markdown with mentions" do
      {:ok, user} =
        UserBuilder.insert(%{nickname: "user__test", ap_id: "http://foo.com/user__test"})

      text = "**hello world**\n\n*another @user__test and @user__test google.com paragraph*"

      {output, _, _} = Utils.format_input(text, "text/markdown")

      assert output ==
               ~s(<p><strong>hello world</strong></p><p><em>another <span class="h-card"><a class="u-url mention" data-user="#{user.id}" href="http://foo.com/user__test" rel="ugc">@<span>user__test</span></a></span> and <span class="h-card"><a class="u-url mention" data-user="#{user.id}" href="http://foo.com/user__test" rel="ugc">@<span>user__test</span></a></span> <a href="http://google.com" rel="ugc">google.com</a> paragraph</em></p>)
    end
  end

  describe "format_input/3 with markdown" do
    test "Paragraph" do
      code = ~s[Hello\n\nWorld!]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == "<p>Hello</p><p>World!</p>"
    end

    test "links" do
      code = "https://en.wikipedia.org/wiki/Animal_Crossing_(video_game)"
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><a href="#{code}">#{code}</a></p>]

      code = "https://github.com/pragdave/earmark/"
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><a href="#{code}">#{code}</a></p>]
    end

    test "link with local mention" do
      insert(:user, %{nickname: "lain"})

      code = "https://example.com/@lain"
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><a href="#{code}">#{code}</a></p>]
    end

    test "local mentions" do
      mario = insert(:user, %{nickname: "mario"})
      luigi = insert(:user, %{nickname: "luigi"})

      code = "@mario @luigi yo what's up?"
      {result, _, []} = Utils.format_input(code, "text/markdown")

      assert result ==
               ~s[<p><span class="h-card"><a class="u-url mention" data-user="#{mario.id}" href="#{mario.ap_id}" rel="ugc">@<span>mario</span></a></span> <span class="h-card"><a class="u-url mention" data-user="#{luigi.id}" href="#{luigi.ap_id}" rel="ugc">@<span>luigi</span></a></span> yo what’s up?</p>]
    end

    test "remote mentions" do
      mario = insert(:user, %{nickname: "mario@mushroom.world", local: false})
      luigi = insert(:user, %{nickname: "luigi@mushroom.world", local: false})

      code = "@mario@mushroom.world @luigi@mushroom.world yo what's up?"
      {result, _, []} = Utils.format_input(code, "text/markdown")

      assert result ==
               ~s[<p><span class="h-card"><a class="u-url mention" data-user="#{mario.id}" href="#{mario.ap_id}" rel="ugc">@<span>mario</span></a></span> <span class="h-card"><a class="u-url mention" data-user="#{luigi.id}" href="#{luigi.ap_id}" rel="ugc">@<span>luigi</span></a></span> yo what’s up?</p>]
    end

    test "raw HTML" do
      code = ~s[<a href="http://example.org/">OwO</a><!-- what's this?-->]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<a href="http://example.org/">OwO</a>]
    end

    test "rulers" do
      code = ~s[before\n\n-----\n\nafter]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == "<p>before</p><hr/><p>after</p>"
    end

    test "blockquote" do
      code = ~s[> whoms't are you quoting?]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == "<blockquote><p>whoms’t are you quoting?</p></blockquote>"
    end

    test "code" do
      code = ~s[`mix`]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><code class="inline">mix</code></p>]

      code = ~s[``mix``]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><code class="inline">mix</code></p>]

      code = ~s[```\nputs "Hello World"\n```]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<pre><code>puts &quot;Hello World&quot;</code></pre>]

      code = ~s[    <div>\n    </div>]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<pre><code>&lt;div&gt;\n&lt;/div&gt;</code></pre>]
    end

    test "lists" do
      code = ~s[- one\n- two\n- three\n- four]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == "<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>"

      code = ~s[1. one\n2. two\n3. three\n4. four\n]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == "<ol><li>one</li><li>two</li><li>three</li><li>four</li></ol>"
    end

    test "delegated renderers" do
      code = ~s[*aaaa~*]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><em>aaaa~</em></p>]

      code = ~s[**aaaa~**]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><strong>aaaa~</strong></p>]

      # strikethrough
      code = ~s[~~aaaa~~~]
      {result, [], []} = Utils.format_input(code, "text/markdown")
      assert result == ~s[<p><del>aaaa</del>~</p>]
    end
  end

  describe "formats date to asctime" do
    test "when date is in ISO 8601 format" do
      date = DateTime.utc_now() |> DateTime.to_iso8601()

      expected =
        date
        |> DateTime.from_iso8601()
        |> elem(1)
        |> Calendar.Strftime.strftime!("%a %b %d %H:%M:%S %z %Y")

      assert Utils.date_to_asctime(date) == expected
    end

    test "when date is a binary in wrong format" do
      date = DateTime.utc_now()

      expected = ""

      assert capture_log(fn ->
               assert Utils.date_to_asctime(date) == expected
             end) =~ "[warning] Date #{date} in wrong format, must be ISO 8601"
    end

    test "when date is a Unix timestamp" do
      date = DateTime.utc_now() |> DateTime.to_unix()

      expected = ""

      assert capture_log(fn ->
               assert Utils.date_to_asctime(date) == expected
             end) =~ "[warning] Date #{date} in wrong format, must be ISO 8601"
    end

    test "when date is nil" do
      expected = ""

      assert capture_log(fn ->
               assert Utils.date_to_asctime(nil) == expected
             end) =~ "[warning] Date  in wrong format, must be ISO 8601"
    end

    test "when date is a random string" do
      assert capture_log(fn ->
               assert Utils.date_to_asctime("foo") == ""
             end) =~ "[warning] Date foo in wrong format, must be ISO 8601"
    end
  end

  describe "get_to_and_cc" do
    test "for public posts, not a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      draft = %ActivityDraft{user: user, mentions: [mentioned_user.ap_id], visibility: "public"}

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 2
      assert length(cc) == 1

      assert @public_address in to
      assert mentioned_user.ap_id in to
      assert user.follower_address in cc
    end

    test "for public posts, a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      third_user = insert(:user)
      {:ok, activity} = CommonAPI.post(third_user, %{status: "uguu"})

      draft = %ActivityDraft{
        user: user,
        mentions: [mentioned_user.ap_id],
        visibility: "public",
        in_reply_to: activity
      }

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 3
      assert length(cc) == 1

      assert @public_address in to
      assert mentioned_user.ap_id in to
      assert third_user.ap_id in to
      assert user.follower_address in cc
    end

    test "for unlisted posts, not a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      draft = %ActivityDraft{user: user, mentions: [mentioned_user.ap_id], visibility: "unlisted"}

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 2
      assert length(cc) == 1

      assert @public_address in cc
      assert mentioned_user.ap_id in to
      assert user.follower_address in to
    end

    test "for unlisted posts, a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      third_user = insert(:user)
      {:ok, activity} = CommonAPI.post(third_user, %{status: "uguu"})

      draft = %ActivityDraft{
        user: user,
        mentions: [mentioned_user.ap_id],
        visibility: "unlisted",
        in_reply_to: activity
      }

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 3
      assert length(cc) == 1

      assert @public_address in cc
      assert mentioned_user.ap_id in to
      assert third_user.ap_id in to
      assert user.follower_address in to
    end

    test "for private posts, not a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      draft = %ActivityDraft{user: user, mentions: [mentioned_user.ap_id], visibility: "private"}

      {to, cc} = Utils.get_to_and_cc(draft)
      assert length(to) == 2
      assert Enum.empty?(cc)

      assert mentioned_user.ap_id in to
      assert user.follower_address in to
    end

    test "for private posts, a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      third_user = insert(:user)
      {:ok, activity} = CommonAPI.post(third_user, %{status: "uguu"})

      draft = %ActivityDraft{
        user: user,
        mentions: [mentioned_user.ap_id],
        visibility: "private",
        in_reply_to: activity
      }

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 2
      assert Enum.empty?(cc)

      assert mentioned_user.ap_id in to
      assert user.follower_address in to
    end

    test "for direct posts, not a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      draft = %ActivityDraft{user: user, mentions: [mentioned_user.ap_id], visibility: "direct"}

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 1
      assert Enum.empty?(cc)

      assert mentioned_user.ap_id in to
    end

    test "for direct posts, a reply" do
      user = insert(:user)
      mentioned_user = insert(:user)
      third_user = insert(:user)
      {:ok, activity} = CommonAPI.post(third_user, %{status: "uguu"})

      draft = %ActivityDraft{
        user: user,
        mentions: [mentioned_user.ap_id],
        visibility: "direct",
        in_reply_to: activity
      }

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 1
      assert Enum.empty?(cc)

      assert mentioned_user.ap_id in to

      {:ok, direct_activity} = CommonAPI.post(third_user, %{status: "uguu", visibility: "direct"})

      draft = %ActivityDraft{
        user: user,
        mentions: [mentioned_user.ap_id],
        visibility: "direct",
        in_reply_to: direct_activity
      }

      {to, cc} = Utils.get_to_and_cc(draft)

      assert length(to) == 2
      assert Enum.empty?(cc)

      assert mentioned_user.ap_id in to
      assert third_user.ap_id in to
    end
  end

  describe "to_master_date/1" do
    test "removes microseconds from date (NaiveDateTime)" do
      assert Utils.to_masto_date(~N[2015-01-23 23:50:07.123]) == "2015-01-23T23:50:07.000Z"
    end

    test "removes microseconds from date (String)" do
      assert Utils.to_masto_date("2015-01-23T23:50:07.123Z") == "2015-01-23T23:50:07.000Z"
    end

    test "returns unix epoch when date invalid" do
      assert Utils.to_masto_date("2015-01?23T23:50:07.123Z") == "1970-01-01T00:00:00Z"
    end

    test "returns unix epoch when date is before the introduction of the Gregorian Calendar" do
      assert Utils.to_masto_date("0621-01-01T00:00:00Z") == "1970-01-01T00:00:00Z"
    end

    test "returns unix epoch when date is BCE" do
      assert Utils.to_masto_date("-0420-01-01T00:00:00Z") == "1970-01-01T00:00:00Z"
    end
  end

  describe "maybe_notify_mentioned_recipients/2" do
    test "returns recipients when activity is not `Create`" do
      activity = insert(:like_activity)
      assert Utils.maybe_notify_mentioned_recipients(["test"], activity) == ["test"]
    end

    test "returns recipients from tag" do
      user = insert(:user)

      object =
        insert(:note,
          user: user,
          data: %{
            "tag" => [
              %{"type" => "Hashtag"},
              "",
              %{"type" => "Mention", "href" => "https://testing.pleroma.lol/users/lain"},
              %{"type" => "Mention", "href" => "https://shitposter.club/user/5381"},
              %{"type" => "Mention", "href" => "https://shitposter.club/user/5381"}
            ]
          }
        )

      activity = insert(:note_activity, user: user, note: object)

      assert Utils.maybe_notify_mentioned_recipients(["test"], activity) == [
               "test",
               "https://testing.pleroma.lol/users/lain",
               "https://shitposter.club/user/5381"
             ]
    end

    test "returns recipients when object is map" do
      user = insert(:user)
      object = insert(:note, user: user)

      activity =
        insert(:note_activity,
          user: user,
          note: object,
          data_attrs: %{
            "object" => %{
              "tag" => [
                %{"type" => "Hashtag"},
                "",
                %{"type" => "Mention", "href" => "https://testing.pleroma.lol/users/lain"},
                %{"type" => "Mention", "href" => "https://shitposter.club/user/5381"},
                %{"type" => "Mention", "href" => "https://shitposter.club/user/5381"}
              ]
            }
          }
        )

      Pleroma.Repo.delete(object)

      assert Utils.maybe_notify_mentioned_recipients(["test"], activity) == [
               "test",
               "https://testing.pleroma.lol/users/lain",
               "https://shitposter.club/user/5381"
             ]
    end

    test "returns recipients when object not found" do
      user = insert(:user)
      object = insert(:note, user: user)

      activity = insert(:note_activity, user: user, note: object)
      Pleroma.Repo.delete(object)

      obj_url = activity.data["object"]

      Tesla.Mock.mock(fn
        %{method: :get, url: ^obj_url} ->
          %Tesla.Env{status: 404, body: ""}
      end)

      assert Utils.maybe_notify_mentioned_recipients(["test-test"], activity) == [
               "test-test"
             ]
    end
  end

  describe "attachments_from_ids/1" do
    test "returns attachments without descs" do
      user = insert(:user)
      object = insert(:note, user: user)
      assert Utils.attachments_from_ids(user, %{media_ids: ["#{object.id}"]}) == [object.data]
    end

    test "returns [] when not pass media_ids" do
      user = insert(:user)
      assert Utils.attachments_from_ids(user, %{}) == []
    end
  end

  describe "maybe_add_list_data/3" do
    test "adds list params when found user list" do
      user = insert(:user)
      {:ok, %Pleroma.List{} = list} = Pleroma.List.create("title", user)

      assert Utils.maybe_add_list_data(%{additional: %{}, object: %{}}, user, {:list, list.id}) ==
               %{
                 additional: %{"bcc" => [list.ap_id], "listMessage" => list.ap_id},
                 object: %{"listMessage" => list.ap_id}
               }
    end

    test "returns original params when list not found" do
      user = insert(:user)
      {:ok, %Pleroma.List{} = list} = Pleroma.List.create("title", insert(:user))

      assert Utils.maybe_add_list_data(%{additional: %{}, object: %{}}, user, {:list, list.id}) ==
               %{additional: %{}, object: %{}}
    end
  end

  describe "maybe_add_attachments/3" do
    test "returns parsed results when attachment_links is false" do
      assert Utils.maybe_add_attachments(
               {"test", [], ["tags"]},
               [],
               false
             ) == {"test", [], ["tags"]}
    end

    test "adds attachments to parsed results" do
      attachment = %{"url" => [%{"href" => "SakuraPM.png"}]}

      assert Utils.maybe_add_attachments(
               {"test", [], ["tags"]},
               [attachment],
               true
             ) == {
               "test<br><a href=\"SakuraPM.png\" class='attachment'>SakuraPM.png</a>",
               [],
               ["tags"]
             }
    end
  end
end