Update

lib/nulla/models/follow.ex

@@ -1,6 +1,8 @@
 defmodule Nulla.Models.Follow do
   use Ecto.Schema
   import Ecto.Changeset
+  alias Nulla.Snowflake
+  alias Nulla.Models.Follow
 
   @primary_key {:id, :integer, autogenerate: false}
   schema "follows" do
@@ -17,4 +19,13 @@ defmodule Nulla.Models.Follow do
     |> validate_required([:user_id, :target_id])
     |> unique_constraint([:user_id, :target_id])
   end
+
+  def create_follow(attrs) do
+    id = Snowflake.next_id()
+
+    %Follow{}
+    |> Follow.changeset(attrs)
+    |> Ecto.Changeset.put_change(:id, id)
+    |> Repo.insert()
+  end
 end

lib/nulla/models/notification.ex

@@ -1,6 +1,8 @@
 defmodule Nulla.Models.Notification do
   use Ecto.Schema
   import Ecto.Changeset
+  alias Nulla.Models.User
+  alias Nulla.Models.Actor
 
   @primary_key {:id, :integer, autogenerate: false}
   schema "notifications" do
@@ -8,8 +10,8 @@ defmodule Nulla.Models.Notification do
     field :data, :map
     field :read, :boolean, default: false
 
-    belongs_to :user, Nulla.Models.User
-    belongs_to :actor, Nulla.Models.User
+    belongs_to :user, User
+    belongs_to :actor, Actor
 
     timestamps()
   end

lib/nulla/models/user.ex

@@ -5,34 +5,18 @@ defmodule Nulla.Models.User do
   alias Nulla.Repo
   alias Nulla.Snowflake
   alias Nulla.Models.User
+  alias Nulla.Models.Actor
+  alias Nulla.Models.Session
 
   @primary_key {:id, :integer, autogenerate: false}
   schema "users" do
-    field :username, :string
-    field :domain, :string
     field :email, :string
     field :password, :string
-    field :is_moderator, :boolean, default: false
-    field :realname, :string
-    field :bio, :string
-    field :location, :string
-    field :birthday, :date
-    field :fields, {:array, :map}
-    field :tags, {:array, :string}
-    field :follow_approval, :boolean, default: false
-    field :is_bot, :boolean, default: false
-    field :is_discoverable, :boolean, default: true
-    field :is_indexable, :boolean, default: true
-    field :is_memorial, :boolean, default: false
-    field :private_key, :string
-    field :public_key, :string
-    field :avatar, :string
-    field :banner, :string
+    field :privateKeyPem, :string
     field :last_active_at, :utc_datetime
 
-    has_many :user_sessions, Nulla.Models.Session
-    has_many :notes, Nulla.Models.Note
-    has_many :media_attachments, through: [:notes, :media_attachments]
+    belongs_to :actor, Actor, define_field: false, foreign_key: :id, type: :integer
+    has_many :user_sessions, Session
 
     timestamps(type: :utc_datetime)
   end
@@ -41,57 +25,24 @@ defmodule Nulla.Models.User do
   def changeset(user, attrs) do
     user
     |> cast(attrs, [
-      :username,
-      :domain,
       :email,
       :password,
-      :is_moderator,
-      :realname,
-      :bio,
-      :location,
-      :birthday,
-      :fields,
-      :follow_approval,
-      :is_bot,
-      :is_discoverable,
-      :is_indexable,
-      :is_memorial,
-      :private_key,
-      :public_key,
-      :avatar,
-      :banner,
-      :last_active_at
+      :privateKeyPem,
+      :last_active_at,
+      :actor_id
     ])
     |> validate_required([
-      :username,
-      :domain,
       :email,
       :password,
-      :is_moderator,
-      :realname,
-      :bio,
-      :location,
-      :birthday,
-      :fields,
-      :follow_approval,
-      :is_bot,
-      :is_discoverable,
-      :is_indexable,
-      :is_memorial,
-      :private_key,
-      :public_key,
-      :avatar,
-      :banner,
-      :last_active_at
+      :privateKeyPem,
+      :last_active_at,
+      :actor_id
     ])
   end
 
-  def create_user(attrs) do
-    id = Snowflake.next_id()
-
-    %User{}
-    |> User.changeset(attrs)
-    |> Ecto.Changeset.put_change(:id, id)
+  def create_user(attrs) when is_map(attrs) do
+    %__MODULE__{}
+    |> changeset(attrs)
     |> Repo.insert()
   end
 
@@ -99,6 +50,13 @@ defmodule Nulla.Models.User do
 
   def get_user_by_username!(username), do: Repo.get_by!(User, username: username)
 
+  def get_user_by_username_and_domain(username, domain) do
+    from(u in User,
+      where: u.username == ^username and u.domain == ^domain
+    )
+    |> Repo.one()
+  end
+
   def get_total_users_count(domain) do
     Repo.aggregate(from(u in User, where: u.domain == ^domain), :count, :id)
   end

lib/nulla/utils.ex

@@ -87,4 +87,38 @@ defmodule Nulla.Utils do
         users
     end
   end
+
+  def resolve_local_actor("https://" <> _ = uri) do
+    case URI.parse(uri).path do
+      "/@" <> username ->
+        instance_settings = InstanceSettings.get_instance_settings!()
+        domain = instance_settings.domain
+
+        case User.get_user_by_username_and_domain(username, domain) do
+          nil -> {:error, :not_found}
+          user -> {:ok, user}
+        end
+
+      _ ->
+        {:error, :invalid_actor}
+    end
+  end
+
+  def fetch_remote_actor(uri) do
+    request =
+      Finch.build(:get, uri, [
+        {"Accept", "application/activity+json"}
+      ])
+
+    case Finch.request(request, MyApp.Finch) do
+      {:ok, %Finch.Response{status: 200, body: body}} ->
+        case Jason.decode(body) do
+          {:ok, data} -> {:ok, data}
+          _ -> {:error, :invalid_json}
+        end
+
+      _ ->
+        {:error, :actor_fetch_failed}
+    end
+  end
 end

lib/nulla_web/controllers/inbox_controller.ex

@@ -1,25 +1,23 @@
 defmodule NullaWeb.InboxController do
   use NullaWeb, :controller
+  alias Nulla.Models.Follow
+  alias Nulla.Utils
 
-  def receive(conn, %{"type" => "Follow"} = activity) do
-    # Check signature
-    # Verify actor and object
-    # Save follow to db
-    # Send Accept or Reject
-    json(conn, %{"status" => "Follow received"})
+  def inbox(
+        conn,
+        %{"type" => "Follow", "actor" => actor_uri, "object" => target_uri} = activity
+      ) do
+    with {:ok, target_user} <- Utils.resolve_local_actor(target_uri),
+         {:ok, remote_actor} <- Utils.fetch_remote_actor(actor_uri),
+         :ok <- HTTPSignature.verify(conn, remote_actor),
+         remote_user <- Follow.create_remote_user(remote_actor),
+         follow <- Follow.create_follow(%{user: remote_user, target: target_user}),
+         :ok <- Utils.send_accept_activity(remote_actor, target_user, follow, activity) do
+      json(conn, %{"status" => "Follow accepted"})
+    else
+      error ->
+        IO.inspect(error, label: "Follow error")
+        json(conn, %{"error" => "Failed to process Follow"})
     end
-
-  def receive(conn, %{"type" => "Like"} = activity) do
-    # Process Like
-    json(conn, %{"status" => "Like received"})
-  end
-
-  def receive(conn, %{"type" => "Create"} = activity) do
-    # Create object and save
-    json(conn, %{"status" => "Object created"})
-  end
-
-  def receive(conn, _params) do
-    json(conn, %{"status" => "Unhandled type"})
   end
 end

lib/nulla_web/controllers/note_controller.ex

@@ -5,33 +5,11 @@ defmodule NullaWeb.NoteController do
   alias Nulla.Models.Note
   alias Nulla.Models.InstanceSettings
 
-  def index(conn, _params) do
-    notes = Notes.list_notes()
-    render(conn, :index, notes: notes)
-  end
-
-  def new(conn, _params) do
-    changeset = Notes.change_note(%Note{})
-    render(conn, :new, changeset: changeset)
-  end
-
-  def create(conn, %{"note" => note_params}) do
-    case Notes.create_note(note_params) do
-      {:ok, note} ->
-        conn
-        |> put_flash(:info, "Note created successfully.")
-        |> redirect(to: ~p"/notes/#{note}")
-
-      {:error, %Ecto.Changeset{} = changeset} ->
-        render(conn, :new, changeset: changeset)
-    end
-  end
-
-  def show(conn, %{"username" => username, "note_id" => note_id}) do
+  def show(conn, %{"username" => username, "id" => id}) do
     accept = List.first(get_req_header(conn, "accept"))
     instance_settings = InstanceSettings.get_instance_settings!()
     domain = instance_settings.domain
-    note = Note.get_note!(note_id) |> Repo.preload([:user, :media_attachments])
+    note = Note.get_note!(id) |> Repo.preload([:user, :media_attachments])
 
     if username != note.user.username do
       conn
@@ -48,38 +26,4 @@ defmodule NullaWeb.NoteController do
       render(conn, :show, domain: domain, note: note, layout: false)
     end
   end
-
-  # def show(conn, %{"id" => id}) do
-  #  note = Notes.get_note!(id)
-  #  render(conn, :show, note: note)
-  # end
-
-  def edit(conn, %{"id" => id}) do
-    note = Notes.get_note!(id)
-    changeset = Notes.change_note(note)
-    render(conn, :edit, note: note, changeset: changeset)
-  end
-
-  def update(conn, %{"id" => id, "note" => note_params}) do
-    note = Notes.get_note!(id)
-
-    case Notes.update_note(note, note_params) do
-      {:ok, note} ->
-        conn
-        |> put_flash(:info, "Note updated successfully.")
-        |> redirect(to: ~p"/notes/#{note}")
-
-      {:error, %Ecto.Changeset{} = changeset} ->
-        render(conn, :edit, note: note, changeset: changeset)
-    end
-  end
-
-  def delete(conn, %{"id" => id}) do
-    note = Notes.get_note!(id)
-    {:ok, _note} = Notes.delete_note(note)
-
-    conn
-    |> put_flash(:info, "Note deleted successfully.")
-    |> redirect(to: ~p"/notes")
-  end
 end

lib/nulla_web/controllers/outbox_controller.ex

@@ -5,7 +5,7 @@ defmodule NullaWeb.OutboxController do
   alias Nulla.Models.Note
   alias Nulla.Models.InstanceSettings
 
-  def show(conn, %{"username" => username} = params) do
+  def outbox(conn, %{"username" => username} = params) do
     case Map.get(params, "page") do
       "true" ->
         instance_settings = InstanceSettings.get_instance_settings!()

lib/nulla_web/router.ex

@@ -20,12 +20,31 @@ defmodule NullaWeb.Router do
     get "/.well-known/webfinger", WebfingerController, :index
     get "/.well-known/nodeinfo", NodeinfoController, :index
     get "/nodeinfo/2.0", NodeinfoController, :show
+    post "/inbox", InboxController, :inbox
 
-    get "/@:username", UserController, :show
-    get "/@:username/outbox", OutboxController, :show
-    get "/@:username/following", FollowController, :following
-    get "/@:username/followers", FollowController, :followers
-    get "/@:username/:note_id", NoteController, :show
+    scope "/auth" do
+      get "/sign_in", AuthController, :sign_in
+      post "/sign_out", AuthController, :sign_out
+      get "/sign_up", AuthController, :sign_up
+    end
+
+    scope "/users/:username" do
+      get "/", UserController, :show
+      get "/following", FollowController, :following
+      get "/followers", FollowController, :followers
+      post "/inbox", InboxController, :inbox
+      get "/outbox", OutboxController, :outbox
+      get "/statuses/:id", NoteController, :show
+    end
+
+    scope "/@:username" do
+      get "/", UserController, :show
+      get "/following", FollowController, :following
+      get "/followers", FollowController, :followers
+      post "/inbox", InboxController, :inbox
+      get "/outbox", OutboxController, :outbox
+      get "/:id", NoteController, :show
+    end
   end
 
   # Other scopes may use custom stacks.