From 61621ebdbc5b783fbba7f37559030f7a8e151d53 Mon Sep 17 00:00:00 2001
From: FloatingGhost <hannah@coffee-and-dreams.uk>
Date: Tue, 2 Apr 2024 10:54:53 +0100
Subject: [PATCH] Add tests for extra warnings about media subdomains

---
 config/description.exs                        |  4 +--
 config/test.exs                               |  1 +
 docs/docs/configuration/cheatsheet.md         |  2 +-
 lib/pleroma/config/deprecation_warnings.ex    |  6 ++--
 .../config/deprecation_warnings_test.exs      | 31 +++++++++++++++++++
 5 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/config/description.exs b/config/description.exs
index 3ddd874f8..ec5050be6 100644
--- a/config/description.exs
+++ b/config/description.exs
@@ -100,9 +100,9 @@ config :pleroma, :config_description, [
         label: "Base URL",
         type: :string,
         description:
-          "Base URL for the uploads. Required if you use a CDN or host attachments under a different domain.",
+          "Base URL for the uploads. Required if you use a CDN or host attachments under a different domain - it is HIGHLY recommended that you **do not** set this to be the same as the domain akkoma is hosted on.",
         suggestions: [
-          "https://cdn-host.com"
+          "https://media.akkoma.dev/media/"
         ]
       },
       %{
diff --git a/config/test.exs b/config/test.exs
index 666a0fb87..97d005eab 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -22,6 +22,7 @@ config :logger, :console,
 config :pleroma, :auth, oauth_consumer_strategies: []
 
 config :pleroma, Pleroma.Upload,
+  base_url: "http://localhost:4001/media/",
   filters: [],
   link_name: false
 
diff --git a/docs/docs/configuration/cheatsheet.md b/docs/docs/configuration/cheatsheet.md
index c4259c6cf..d238d73aa 100644
--- a/docs/docs/configuration/cheatsheet.md
+++ b/docs/docs/configuration/cheatsheet.md
@@ -602,7 +602,7 @@ the source code is here: [kocaptcha](https://github.com/koto-bank/kocaptcha). Th
 * `filters`: List of [upload filters](#upload-filters) to use.
 * `link_name`: When enabled Akkoma will add a `name` parameter to the url of the upload, for example `https://instance.tld/media/corndog.png?name=corndog.png`. This is needed to provide the correct filename in Content-Disposition headers
 * `base_url`: The base URL to access a user-uploaded file; MUST be configured explicitly.
-  Using a (sub)domain distinct from the instance endpoint is **strongly** recommended.
+  Using a (sub)domain distinct from the instance endpoint is **strongly** recommended. A good value might be `https://media.myakkoma.instance/media/`. 
 * `proxy_remote`: If you're using a remote uploader, Akkoma will proxy media requests instead of redirecting to it.
 * `proxy_opts`: Proxy options, see `Pleroma.ReverseProxy` documentation.
 * `filename_display_max_length`: Set max length of a filename to display. 0 = no limit. Default: 30.
diff --git a/lib/pleroma/config/deprecation_warnings.ex b/lib/pleroma/config/deprecation_warnings.ex
index 3161f5907..d7c64ea2a 100644
--- a/lib/pleroma/config/deprecation_warnings.ex
+++ b/lib/pleroma/config/deprecation_warnings.ex
@@ -352,10 +352,11 @@ defmodule Pleroma.Config.DeprecationWarnings do
       Please make the following change:\n
       \n* `config :pleroma, Pleroma.Upload, base_url: "https://example.com/media/`
       \n
-      \nPlease note that it is HEAVILY recommended to use a subdomain to host user-uploaded media! 
+      \nPlease note that it is HEAVILY recommended to use a subdomain to host user-uploaded media!
       """)
 
-      :error
+      # This is a hard exit - the uploader will not work without a base_url
+      raise ArgumentError, message: "No base_url set for uploads - please set one in your config!"
     end
   end
 
@@ -369,7 +370,6 @@ defmodule Pleroma.Config.DeprecationWarnings do
     akkoma_host =
       [Pleroma.Web.Endpoint, :url]
       |> Pleroma.Config.get()
-      |> IO.inspect()
       |> Keyword.get(:host)
 
     if uploader_host == akkoma_host do
diff --git a/test/pleroma/config/deprecation_warnings_test.exs b/test/pleroma/config/deprecation_warnings_test.exs
index 98c128e6a..7e2e04e6a 100644
--- a/test/pleroma/config/deprecation_warnings_test.exs
+++ b/test/pleroma/config/deprecation_warnings_test.exs
@@ -289,4 +289,35 @@ defmodule Pleroma.Config.DeprecationWarningsTest do
 
     Application.put_env(:tesla, :adapter, Tesla.Mock)
   end
+
+  test "check_uploader_base_url_set/0" do
+    clear_config([Pleroma.Upload], base_url: nil)
+
+    # we need to capture the error
+    assert_raise ArgumentError, fn ->
+      assert capture_log(fn ->
+               DeprecationWarnings.check_uploader_base_url_set()
+             end) =~ "Your config does not specify a base_url for uploads!"
+    end
+
+    clear_config([Pleroma.Upload], base_url: "https://example.com")
+
+    refute capture_log(fn ->
+             DeprecationWarnings.check_uploader_base_url_set()
+           end) =~ "Your config does not specify a base_url for uploads!"
+  end
+
+  test "check_uploader_base_url_is_not_base_domain/0" do
+    clear_config([Pleroma.Upload], base_url: "http://localhost")
+
+    assert capture_log(fn ->
+             DeprecationWarnings.check_uploader_base_url_is_not_base_domain()
+           end) =~ "Your Akkoma Host and your Upload base_url's host are the same!"
+
+    clear_config([Pleroma.Upload], base_url: "https://media.localhost")
+
+    refute capture_log(fn ->
+             DeprecationWarnings.check_uploader_base_url_is_not_base_domain()
+           end) =~ "Your Akkoma Host and your Upload base_url's host are the same!"
+  end
 end