fix compile warnings

lib/mix/tasks/pleroma/common.ex

 defmodule Mix.Tasks.Pleroma.Common do
-  @shortdoc "Common functions to be reused in mix tasks"
+  @doc "Common functions to be reused in mix tasks"
   def start_pleroma do
     Mix.Task.run("app.start")
   end

lib/mix/tasks/pleroma/instance.ex

 defmodule Mix.Tasks.Pleroma.Instance do
   use Mix.Task
-  alias Pleroma.{Repo, User}
   alias Mix.Tasks.Pleroma.Common
 
   @shortdoc "Manages Pleroma instance"

lib/mix/tasks/pleroma/relay.ex

@@ -22,7 +22,7 @@ defmodule Mix.Tasks.Pleroma.Relay do
   def run(["follow", target]) do
     Common.start_pleroma()
 
-    with {:ok, activity} <- Relay.follow(target) do
+    with {:ok, _activity} <- Relay.follow(target) do
       # put this task to sleep to allow the genserver to push out the messages
       :timer.sleep(500)
     else
@@ -33,7 +33,7 @@ def run(["follow", target]) do
   def run(["unfollow", target]) do
     Common.start_pleroma()
 
-    with {:ok, activity} <- Relay.unfollow(target) do
+    with {:ok, _activity} <- Relay.unfollow(target) do
       # put this task to sleep to allow the genserver to push out the messages
       :timer.sleep(500)
     else

lib/mix/tasks/pleroma/uploads.ex

 defmodule Mix.Tasks.Pleroma.Uploads do
   use Mix.Task
-  import Mix.Ecto
-  alias Pleroma.{Upload, Uploaders.Local, Uploaders.S3}
+  alias Pleroma.{Upload, Uploaders.Local}
   alias Mix.Tasks.Pleroma.Common
   require Logger
 
   @log_every 50
   @shortdoc "Migrate uploads from local to remote storage"
-  @longdoc """
+  @doc """
    Manages uploads
    ## Migrate uploads from local to remote storage
 
   """
-
   def run(["migrate_local", target_uploader | args]) do
     delete? = Enum.member?(args, "--delete")
     Common.start_pleroma()
@@ -59,7 +57,7 @@ def run(["migrate_local", target_uploader | args]) do
 
           File.exists?(root_path) ->
             file = Path.basename(id)
-            [hash, ext] = String.split(id, ".")
+            [hash, _ext] = String.split(id, ".")
             {%Pleroma.Upload{id: hash, name: file, path: file, tempfile: root_path}, root_path}
 
           true ->

lib/mix/tasks/pleroma/user.ex

@@ -20,7 +20,7 @@ defmodule Mix.Tasks.Pleroma.User do
   - `--admin`/`--no-admin` - whether the user is an admin
 
   ## Generate an invite link.
-    
+
       mix pleroma.user invite
 
   ## Delete the user's account.
@@ -32,7 +32,7 @@ defmodule Mix.Tasks.Pleroma.User do
       mix pleroma.user toggle_activated NICKNAME
 
   ## Unsubscribe local users from user's account and deactivate it
-     
+
       mix pleroma.user unsubscribe NICKNAME
 
   ## Create a password reset link.
@@ -235,6 +235,26 @@ def run(["set", nickname | rest]) do
     end
   end
 
+  def run(["invite"]) do
+    Common.start_pleroma()
+
+    with {:ok, token} <- Pleroma.UserInviteToken.create_token() do
+      Mix.shell().info("Generated user invite token")
+
+      url =
+        Pleroma.Web.Router.Helpers.redirect_url(
+          Pleroma.Web.Endpoint,
+          :registration_page,
+          token.token
+        )
+
+      IO.puts(url)
+    else
+      _ ->
+        Mix.shell().error("Could not create invite token.")
+    end
+  end
+
   defp set_moderator(user, value) do
     info_cng = User.Info.admin_api_update(user.info, %{is_moderator: value})
 
@@ -270,24 +290,4 @@ defp set_locked(user, value) do
 
     Mix.shell().info("Locked status of #{user.nickname}: #{user.info.locked}")
   end
-
-  def run(["invite"]) do
-    Common.start_pleroma()
-
-    with {:ok, token} <- Pleroma.UserInviteToken.create_token() do
-      Mix.shell().info("Generated user invite token")
-
-      url =
-        Pleroma.Web.Router.Helpers.redirect_url(
-          Pleroma.Web.Endpoint,
-          :registration_page,
-          token.token
-        )
-
-      IO.puts(url)
-    else
-      _ ->
-        Mix.shell().error("Could not create invite token.")
-    end
-  end
 end

lib/pleroma/application.ex

@@ -15,7 +15,6 @@ def user_agent() do
 
   # See http://elixir-lang.org/docs/stable/elixir/Application.html
   # for more information on OTP Applications
-  @env Mix.env()
   def start(_type, _args) do
     import Cachex.Spec
 

lib/pleroma/emoji.ex

@@ -165,7 +165,7 @@ defp load_from_file(file) do
 
   defp load_from_file_stream(stream) do
     stream
-    |> Stream.map(&String.strip/1)
+    |> Stream.map(&String.trim/1)
     |> Stream.map(fn line ->
       case String.split(line, ~r/,\s*/) do
         [name, file] -> {name, file}

lib/pleroma/filter.ex

 defmodule Pleroma.Filter do
   use Ecto.Schema
   import Ecto.{Changeset, Query}
-  alias Pleroma.{User, Repo, Activity}
+  alias Pleroma.{User, Repo}
 
   schema "filters" do
-    belongs_to(:user, Pleroma.User)
+    belongs_to(:user, User)
     field(:filter_id, :integer)
     field(:hide, :boolean, default: false)
     field(:whole_word, :boolean, default: true)
@@ -26,7 +26,7 @@ def get(id, %{id: user_id} = _user) do
     Repo.one(query)
   end
 
-  def get_filters(%Pleroma.User{id: user_id} = user) do
+  def get_filters(%User{id: user_id} = _user) do
     query =
       from(
         f in Pleroma.Filter,
@@ -38,9 +38,9 @@ def get_filters(%Pleroma.User{id: user_id} = user) do
 
   def create(%Pleroma.Filter{user_id: user_id, filter_id: nil} = filter) do
     # If filter_id wasn't given, use the max filter_id for this user plus 1.
-    # XXX This could result in a race condition if a user tries to add two 
-    # different filters for their account from two different clients at the 
-    # same time, but that should be unlikely. 
+    # XXX This could result in a race condition if a user tries to add two
+    # different filters for their account from two different clients at the
+    # same time, but that should be unlikely.
 
     max_id_query =
       from(

lib/pleroma/html.ex

@@ -166,7 +166,7 @@ def scrub_attribute("img", {"src", "http" <> target}) do
     {"src", media_url}
   end
 
-  def scrub_attribute(tag, attribute), do: attribute
+  def scrub_attribute(_tag, attribute), do: attribute
 
   def scrub({"img", attributes, children}) do
     attributes =
@@ -177,9 +177,9 @@ def scrub({"img", attributes, children}) do
     {"img", attributes, children}
   end
 
-  def scrub({:comment, children}), do: ""
+  def scrub({:comment, _children}), do: ""
 
   def scrub({tag, attributes, children}), do: {tag, attributes, children}
-  def scrub({tag, children}), do: children
+  def scrub({_tag, children}), do: children
   def scrub(text), do: text
 end

lib/pleroma/http/connection.ex

@@ -25,7 +25,7 @@ def new(opts \\ []) do
 
   # fetch Hackney options
   #
-  defp hackney_options(opts \\ []) do
+  defp hackney_options(opts) do
     options = Keyword.get(opts, :adapter, [])
     @hackney_options ++ options
   end

lib/pleroma/list.ex

@@ -23,7 +23,7 @@ def follow_changeset(list, attrs \\ %{}) do
     |> validate_required([:following])
   end
 
-  def for_user(user, opts) do
+  def for_user(user, _opts) do
     query =
       from(
         l in Pleroma.List,
@@ -46,7 +46,7 @@ def get(id, %{id: user_id} = _user) do
     Repo.one(query)
   end
 
-  def get_following(%Pleroma.List{following: following} = list) do
+  def get_following(%Pleroma.List{following: following} = _list) do
     q =
       from(
         u in User,

lib/pleroma/mime.ex

@@ -33,10 +33,10 @@ def bin_mime_type(<<head::binary-size(@read_bytes), _::binary>>) do
     {:ok, check_mime_type(head)}
   end
 
-  def mime_type(<<_::binary>>), do: {:ok, @default}
-
   def bin_mime_type(_), do: :error
 
+  def mime_type(<<_::binary>>), do: {:ok, @default}
+
   defp fix_extension(filename, content_type) do
     parts = String.split(filename, ".")
 

lib/pleroma/notification.ex

@@ -118,7 +118,7 @@ def create_notification(%Activity{} = activity, %User{} = user) do
   def get_notified_from_activity(activity, local_only \\ true)
 
   def get_notified_from_activity(
-        %Activity{data: %{"to" => _, "type" => type} = data} = activity,
+        %Activity{data: %{"to" => _, "type" => type} = _data} = activity,
         local_only
       )
       when type in ["Create", "Like", "Announce", "Follow"] do
@@ -131,18 +131,18 @@ def get_notified_from_activity(
     User.get_users_from_set(recipients, local_only)
   end
 
-  def get_notified_from_activity(_, local_only), do: []
+  def get_notified_from_activity(_, _local_only), do: []
 
   defp maybe_notify_to_recipients(
          recipients,
-         %Activity{data: %{"to" => to, "type" => type}} = activity
+         %Activity{data: %{"to" => to, "type" => _type}} = _activity
        ) do
     recipients ++ to
   end
 
   defp maybe_notify_mentioned_recipients(
          recipients,
-         %Activity{data: %{"to" => to, "type" => type} = data} = activity
+         %Activity{data: %{"to" => _to, "type" => type} = data} = _activity
        )
        when type == "Create" do
     object = Object.normalize(data["object"])

lib/pleroma/plugs/authentication_plug.ex

@@ -26,14 +26,7 @@ def call(
     end
   end
 
-  def call(
-        %{
-          assigns: %{
-            auth_credentials: %{password: password}
-          }
-        } = conn,
-        _
-      ) do
+  def call(%{assigns: %{auth_credentials: %{password: _}}} = conn, _) do
     Pbkdf2.dummy_checkpw()
     conn
   end

lib/pleroma/plugs/basic_auth_decoder_plug.ex

@@ -5,7 +5,7 @@ def init(options) do
     options
   end
 
-  def call(conn, opts) do
+  def call(conn, _opts) do
     with ["Basic " <> header] <- get_req_header(conn, "authorization"),
          {:ok, userinfo} <- Base.decode64(header),
          [username, password] <- String.split(userinfo, ":", parts: 2) do

lib/pleroma/plugs/federating_plug.ex

@@ -5,7 +5,7 @@ def init(options) do
     options
   end
 
-  def call(conn, opts) do
+  def call(conn, _opts) do
     if Keyword.get(Application.get_env(:pleroma, :instance), :federating) do
       conn
     else

lib/pleroma/plugs/http_security_plug.ex

@@ -4,11 +4,11 @@ defmodule Pleroma.Plugs.HTTPSecurityPlug do
 
   def init(opts), do: opts
 
-  def call(conn, options) do
+  def call(conn, _options) do
     if Config.get([:http_security, :enabled]) do
-      conn =
-        merge_resp_headers(conn, headers())
-        |> maybe_send_sts_header(Config.get([:http_security, :sts]))
+      conn
+      |> merge_resp_headers(headers())
+      |> maybe_send_sts_header(Config.get([:http_security, :sts]))
     else
       conn
     end
@@ -42,7 +42,7 @@ defp csp_string do
       "script-src 'self'",
       "connect-src 'self' " <> String.replace(Pleroma.Web.Endpoint.static_url(), "http", "ws"),
       "manifest-src 'self'",
-      if @protocol == "https" do
+      if protocol == "https" do
         "upgrade-insecure-requests"
       end
     ]

lib/pleroma/plugs/session_authentication_plug.ex

 defmodule Pleroma.Plugs.SessionAuthenticationPlug do
   import Plug.Conn
-  alias Pleroma.User
 
   def init(options) do
     options

lib/pleroma/plugs/uploaded_media.ex

@@ -8,10 +8,6 @@ defmodule Pleroma.Plugs.UploadedMedia do
   @behaviour Plug
   # no slashes
   @path "media"
-  @cache_control %{
-    default: "public, max-age=1209600",
-    error: "public, must-revalidate, max-age=160"
-  }
 
   def init(_opts) do
     static_plug_opts =

lib/pleroma/plugs/user_fetcher_plug.ex

@@ -7,7 +7,7 @@ def init(options) do
     options
   end
 
-  def call(conn, options) do
+  def call(conn, _options) do
     with %{auth_credentials: %{username: username}} <- conn.assigns,
          {:ok, %User{} = user} <- user_fetcher(username) do
       conn

lib/pleroma/reverse_proxy.ex

@@ -85,7 +85,9 @@ defmodule Pleroma.ReverseProxy do
           | {:redirect_on_failure, boolean()}
 
   @spec call(Plug.Conn.t(), url :: String.t(), [option()]) :: Plug.Conn.t()
-  def call(conn = %{method: method}, url, opts \\ []) when method in @methods do
+  def call(_conn, _url, _opts \\ [])
+
+  def call(conn = %{method: method}, url, opts) when method in @methods do
     hackney_opts =
       @default_hackney_options
       |> Keyword.merge(Keyword.get(opts, :http, []))
@@ -240,24 +242,23 @@ defp put_resp_headers(conn, headers) do
   end
 
   defp build_req_headers(headers, opts) do
-    headers =
-      headers
-      |> downcase_headers()
-      |> Enum.filter(fn {k, _} -> k in @keep_req_headers end)
-      |> (fn headers ->
-            headers = headers ++ Keyword.get(opts, :req_headers, [])
-
-            if Keyword.get(opts, :keep_user_agent, false) do
-              List.keystore(
-                headers,
-                "user-agent",
-                0,
-                {"user-agent", Pleroma.Application.user_agent()}
-              )
-            else
-              headers
-            end
-          end).()
+    headers
+    |> downcase_headers()
+    |> Enum.filter(fn {k, _} -> k in @keep_req_headers end)
+    |> (fn headers ->
+          headers = headers ++ Keyword.get(opts, :req_headers, [])
+
+          if Keyword.get(opts, :keep_user_agent, false) do
+            List.keystore(
+              headers,
+              "user-agent",
+              0,
+              {"user-agent", Pleroma.Application.user_agent()}
+            )
+          else
+            headers
+          end
+        end).()
   end
 
   defp build_resp_headers(headers, opts) do
@@ -268,7 +269,7 @@ defp build_resp_headers(headers, opts) do
     |> (fn headers -> headers ++ Keyword.get(opts, :resp_headers, []) end).()
   end
 
-  defp build_resp_cache_headers(headers, opts) do
+  defp build_resp_cache_headers(headers, _opts) do
     has_cache? = Enum.any?(headers, fn {k, _} -> k in @resp_cache_headers end)
 
     if has_cache? do

lib/pleroma/upload.ex

@@ -128,19 +128,18 @@ defp get_opts(opts) do
         opts
       end
 
-    opts =
-      if Pleroma.Config.get([:instance, :dedupe_media]) == true &&
-           !Enum.member?(opts.filters, Pleroma.Upload.Filter.Dedupe) do
-        Logger.warn("""
-        Pleroma: configuration `:instance, :dedupe_media` is deprecated, please instead set:
+    if Pleroma.Config.get([:instance, :dedupe_media]) == true &&
+         !Enum.member?(opts.filters, Pleroma.Upload.Filter.Dedupe) do
+      Logger.warn("""
+      Pleroma: configuration `:instance, :dedupe_media` is deprecated, please instead set:
 
-          :pleroma, Pleroma.Upload, [filters: [Pleroma.Upload.Filter.Dedupe]]
-        """)
+      :pleroma, Pleroma.Upload, [filters: [Pleroma.Upload.Filter.Dedupe]]
+      """)
 
-        Map.put(opts, :filters, opts.filters ++ [Pleroma.Upload.Filter.Dedupe])
-      else
-        opts
-      end
+      Map.put(opts, :filters, opts.filters ++ [Pleroma.Upload.Filter.Dedupe])
+    else
+      opts
+    end
   end
 
   defp prepare_upload(%Plug.Upload{} = file, opts) do
@@ -215,8 +214,4 @@ defp url_from_spec(base_url, {:file, path}) do
     [base_url, "media", path]
     |> Path.join()
   end
-
-  defp url_from_spec({:url, url}) do
-    url
-  end
 end

lib/pleroma/upload/filter/dedupe.ex

 defmodule Pleroma.Upload.Filter.Dedupe do
   @behaviour Pleroma.Upload.Filter
 
-  def filter(upload = %Pleroma.Upload{name: name, tempfile: path}) do
+  def filter(upload = %Pleroma.Upload{name: name, tempfile: _path}) do
     extension = String.split(name, ".") |> List.last()
     shasum = :crypto.hash(:sha256, File.read!(upload.tempfile)) |> Base.encode16(case: :lower)
     filename = shasum <> "." <> extension

lib/pleroma/upload/filter/mogrify.ex

 defmodule Pleroma.Upload.Filter.Mogrify do
-  @behaviour Pleroma.Uploader.Filter
+  @behaviour Pleroma.Upload.Filter
 
   @type conversion :: action :: String.t() | {action :: String.t(), opts :: String.t()}
   @type conversions :: conversion() | [conversion()]

lib/pleroma/uploaders/local.ex

 defmodule Pleroma.Uploaders.Local do
   @behaviour Pleroma.Uploaders.Uploader
 
-  alias Pleroma.Web
-
   def get_file(_) do
     {:ok, {:static_dir, upload_path()}}
   end

lib/pleroma/uploaders/mdii.ex

@@ -12,8 +12,8 @@ def get_file(file) do
   end
 
   def put_file(upload) do
-    cgi = Pleroma.Config.get([Pleroma.Uploaders.MDII, :cgi])
-    files = Pleroma.Config.get([Pleroma.Uploaders.MDII, :files])
+    cgi = Config.get([Pleroma.Uploaders.MDII, :cgi])
+    files = Config.get([Pleroma.Uploaders.MDII, :files])
 
     {:ok, file_data} = File.read(upload.tempfile)
 

lib/pleroma/uploaders/swift/swift.ex

@@ -9,7 +9,6 @@ def process_url(url) do
   end
 
   def upload_file(filename, body, content_type) do
-    object_url = Pleroma.Config.get!([Pleroma.Uploaders.Swift, :object_url])
     token = Pleroma.Uploaders.Swift.Keystone.get_token()
 
     case put("#{filename}", body, "X-Auth-Token": token, "Content-Type": content_type) do

lib/pleroma/user.ex

@@ -2,7 +2,6 @@ defmodule Pleroma.User do
   use Ecto.Schema
 
   import Ecto.{Changeset, Query}
-  alias Ecto.Multi
   alias Pleroma.{Repo, User, Object, Web, Activity, Notification}
   alias Comeonin.Pbkdf2
   alias Pleroma.Formatter
@@ -10,6 +9,8 @@ defmodule Pleroma.User do
   alias Pleroma.Web.{OStatus, Websub, OAuth}
   alias Pleroma.Web.ActivityPub.{Utils, ActivityPub}
 
+  @type t :: %__MODULE__{}
+
   schema "users" do
     field(:bio, :string)
     field(:email, :string)
@@ -218,7 +219,7 @@ def maybe_direct_follow(%User{} = follower, %User{} = followed) do
     end
   end
 
-  def maybe_follow(%User{} = follower, %User{info: info} = followed) do
+  def maybe_follow(%User{} = follower, %User{info: _info} = followed) do
     if not following?(follower, followed) do
       follow(follower, followed)
     else
@@ -280,6 +281,7 @@ def unfollow(%User{} = follower, %User{} = followed) do
     end
   end
 
+  @spec following?(User.t(), User.t()) :: boolean
   def following?(%User{} = follower, %User{} = followed) do
     Enum.member?(follower.following, followed.follower_address)
   end
@@ -824,20 +826,21 @@ def tag(user_identifiers, tags) when is_list(user_identifiers) do
     end)
   end
 
+  def tag(nickname, tags) when is_binary(nickname),
+    do: tag(User.get_by_nickname(nickname), tags)
+
+  def tag(%User{} = user, tags),
+    do: update_tags(user, Enum.uniq(user.tags ++ normalize_tags(tags)))
+
   def untag(user_identifiers, tags) when is_list(user_identifiers) do
     Repo.transaction(fn ->
       for user_identifier <- user_identifiers, do: untag(user_identifier, tags)
     end)
   end
 
-  def tag(nickname, tags) when is_binary(nickname), do: tag(User.get_by_nickname(nickname), tags)
-
   def untag(nickname, tags) when is_binary(nickname),
     do: untag(User.get_by_nickname(nickname), tags)
 
-  def tag(%User{} = user, tags),
-    do: update_tags(user, Enum.uniq(user.tags ++ normalize_tags(tags)))
-
   def untag(%User{} = user, tags), do: update_tags(user, user.tags -- normalize_tags(tags))
 
   defp update_tags(%User{} = user, new_tags) do

lib/pleroma/user_invite_token.ex

@@ -3,7 +3,8 @@ defmodule Pleroma.UserInviteToken do
 
   import Ecto.Changeset
 
-  alias Pleroma.{User, UserInviteToken, Repo}
+  alias Pleroma.UserInviteToken
+  alias Pleroma.Repo
 
   schema "user_invite_tokens" do
     field(:token, :string)

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -799,7 +799,7 @@ def visible_for_user?(activity, user) do
   end
 
   # guard
-  def entire_thread_visible_for_user?(nil, user), do: false
+  def entire_thread_visible_for_user?(nil, _user), do: false
 
   # child
   def entire_thread_visible_for_user?(

lib/pleroma/web/activity_pub/activity_pub_controller.ex

@@ -141,7 +141,7 @@ def inbox(conn, params) do
     json(conn, "error")
   end
 
-  def relay(conn, params) do
+  def relay(conn, _params) do
     with %User{} = user <- Relay.get_actor(),
          {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
       conn

lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex

@@ -5,7 +5,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.EnsureRePrepended do
 
   @reply_prefix Regex.compile!("^re:[[:space:]]*", [:caseless])
   def filter_by_summary(
-        %{"summary" => parent_summary} = parent,
+        %{"summary" => parent_summary} = _parent,
         %{"summary" => child_summary} = child
       )
       when not is_nil(child_summary) and byte_size(child_summary) > 0 and
@@ -19,7 +19,7 @@ def filter_by_summary(
     end
   end
 
-  def filter_by_summary(parent, child), do: child
+  def filter_by_summary(_parent, child), do: child
 
   def filter(%{"type" => activity_type} = object) when activity_type == "Create" do
     child = object["object"]

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -37,9 +37,9 @@ def get_actor(%{"actor" => nil, "attributedTo" => actor}) when not is_nil(actor)
   @doc """
   Checks that an imported AP object's actor matches the domain it came from.
   """
-  def contain_origin(id, %{"actor" => nil}), do: :error
+  def contain_origin(_id, %{"actor" => nil}), do: :error
 
-  def contain_origin(id, %{"actor" => actor} = params) do
+  def contain_origin(id, %{"actor" => _actor} = params) do
     id_uri = URI.parse(id)
     actor_uri = URI.parse(get_actor(params))
 
@@ -50,9 +50,9 @@ def contain_origin(id, %{"actor" => actor} = params) do
     end
   end
 
-  def contain_origin_from_id(id, %{"id" => nil}), do: :error
+  def contain_origin_from_id(_id, %{"id" => nil}), do: :error
 
-  def contain_origin_from_id(id, %{"id" => other_id} = params) do
+  def contain_origin_from_id(id, %{"id" => other_id} = _params) do
     id_uri = URI.parse(id)
     other_uri = URI.parse(other_id)
 
@@ -266,6 +266,32 @@ def fix_content_map(%{"contentMap" => content_map} = object) do
 
   def fix_content_map(object), do: object
 
+  defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
+    with true <- id =~ "follows",
+         %User{local: true} = follower <- User.get_cached_by_ap_id(follower_id),
+         %Activity{} = activity <- Utils.fetch_latest_follow(follower, followed) do
+      {:ok, activity}
+    else
+      _ -> {:error, nil}