2 files changed, 86 insertions, 2 deletions
diff --git a/lib/pleroma/upload.ex b/lib/pleroma/upload.ex
index e6c484548..35c7c02a5 100644
--- a/lib/pleroma/upload.ex
+++ b/lib/pleroma/upload.ex
@@ -239,8 +239,12 @@ defmodule Pleroma.Upload do
           ""
         end
 
-    [base_url, path]
-    |> Path.join()
+    if String.contains?(base_url, Pleroma.Uploaders.IPFS.placeholder()) do
+      String.replace(base_url, Pleroma.Uploaders.IPFS.placeholder(), path)
+    else
+      [base_url, path]
+      |> Path.join()
+    end
   end
 
   defp url_from_spec(_upload, _base_url, {:url, url}), do: url
@@ -277,6 +281,9 @@ defmodule Pleroma.Upload do
           Path.join([upload_base_url, bucket_with_namespace])
         end
 
+      Pleroma.Uploaders.IPFS ->
+        @config_impl.get([Pleroma.Uploaders.IPFS, :get_gateway_url])
+
       _ ->
         public_endpoint || upload_base_url || Pleroma.Web.Endpoint.url() <> "/media/"
     end
diff --git a/lib/pleroma/uploaders/ipfs.ex b/lib/pleroma/uploaders/ipfs.ex
new file mode 100644
index 000000000..d171e4652
--- /dev/null
+++ b/lib/pleroma/uploaders/ipfs.ex
@@ -0,0 +1,77 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Uploaders.IPFS do
+  @behaviour Pleroma.Uploaders.Uploader
+  require Logger
+
+  alias Tesla.Multipart
+
+  @config_impl Application.compile_env(:pleroma, [__MODULE__, :config_impl], Pleroma.Config)
+
+  defp get_final_url(method) do
+    config = @config_impl.get([__MODULE__])
+    post_base_url = Keyword.get(config, :post_gateway_url)
+
+    Path.join([post_base_url, method])
+  end
+
+  def put_file_endpoint do
+    get_final_url("/api/v0/add")
+  end
+
+  def delete_file_endpoint do
+    get_final_url("/api/v0/files/rm")
+  end
+
+  @placeholder "{CID}"
+  def placeholder, do: @placeholder
+
+  @impl true
+  def get_file(file) do
+    b_url = Pleroma.Upload.base_url()
+
+    if String.contains?(b_url, @placeholder) do
+      {:ok, {:url, String.replace(b_url, @placeholder, URI.decode(file))}}
+    else
+      {:error, "IPFS Get URL doesn't contain 'cid' placeholder"}
+    end
+  end
+
+  @impl true
+  def put_file(%Pleroma.Upload{} = upload) do
+    mp =
+      Multipart.new()
+      |> Multipart.add_content_type_param("charset=utf-8")
+      |> Multipart.add_file(upload.tempfile)
+
+    case Pleroma.HTTP.post(put_file_endpoint(), mp, [], params: ["cid-version": "1"]) do
+      {:ok, ret} ->
+        case Jason.decode(ret.body) do
+          {:ok, ret} ->
+            if Map.has_key?(ret, "Hash") do
+              {:ok, {:file, ret["Hash"]}}
+            else
+              {:error, "JSON doesn't contain Hash key"}
+            end
+
+          error ->
+            Logger.error("#{__MODULE__}: #{inspect(error)}")
+            {:error, "JSON decode failed"}
+        end
+
+      error ->
+        Logger.error("#{__MODULE__}: #{inspect(error)}")
+        {:error, "IPFS Gateway upload failed"}
+    end
+  end
+
+  @impl true
+  def delete_file(file) do
+    case Pleroma.HTTP.post(delete_file_endpoint(), "", [], params: [arg: file]) do
+      {:ok, %{status: 204}} -> :ok
+      error -> {:error, inspect(error)}
+    end
+  end
+end