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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MastodonAPI.SuggestionController do
use Pleroma.Web, :controller
import Ecto.Query
alias Pleroma.FollowingRelationship
alias Pleroma.User
alias Pleroma.UserRelationship
require Logger
plug(Pleroma.Web.ApiSpec.CastAndValidate)
plug(Pleroma.Web.Plugs.OAuthScopesPlug, %{scopes: ["read"]} when action in [:index, :index2])
plug(Pleroma.Web.Plugs.OAuthScopesPlug, %{scopes: ["write"]} when action in [:dismiss])
def open_api_operation(action) do
operation = String.to_existing_atom("#{action}_operation")
apply(__MODULE__, operation, [])
end
def index_operation do
%OpenApiSpex.Operation{
tags: ["Suggestions"],
summary: "Follow suggestions (Not implemented)",
operationId: "SuggestionController.index",
responses: %{
200 => Pleroma.Web.ApiSpec.Helpers.empty_array_response()
}
}
end
def index2_operation do
%OpenApiSpex.Operation{
tags: ["Suggestions"],
summary: "Follow suggestions",
operationId: "SuggestionController.index2",
responses: %{
200 => Pleroma.Web.ApiSpec.Helpers.empty_array_response()
}
}
end
def dismiss_operation do
%OpenApiSpex.Operation{
tags: ["Suggestions"],
summary: "Remove a suggestion",
operationId: "SuggestionController.dismiss",
parameters: [
OpenApiSpex.Operation.parameter(
:account_id,
:path,
%OpenApiSpex.Schema{type: :string},
"Account to dismiss",
required: true
)
],
responses: %{
200 => Pleroma.Web.ApiSpec.Helpers.empty_object_response()
}
}
end
@doc "GET /api/v1/suggestions"
def index(conn, params),
do: Pleroma.Web.MastodonAPI.MastodonAPIController.empty_array(conn, params)
@doc "GET /api/v2/suggestions"
def index2(%{assigns: %{user: user}} = conn, params) do
limit = Map.get(params, :limit, 40) |> min(80)
users =
%{is_suggested: true, invisible: false, limit: limit}
|> User.Query.build()
|> exclude_user(user)
|> exclude_relationships(user, [:block, :mute, :suggestion_dismiss])
|> exclude_following(user)
|> Pleroma.Repo.all()
render(conn, "index.json", %{
users: users,
source: :staff,
for: user,
skip_visibility_check: true
})
end
defp exclude_user(query, %User{id: user_id}) do
where(query, [u], u.id != ^user_id)
end
defp exclude_relationships(query, %User{id: user_id}, relationship_types) do
query
|> join(:left, [u], r in UserRelationship,
as: :user_relationships,
on:
r.target_id == u.id and r.source_id == ^user_id and
r.relationship_type in ^relationship_types
)
|> where([user_relationships: r], is_nil(r.target_id))
end
defp exclude_following(query, %User{id: user_id}) do
query
|> join(:left, [u], r in FollowingRelationship,
as: :following_relationships,
on: r.following_id == u.id and r.follower_id == ^user_id and r.state == :follow_accept
)
|> where([following_relationships: r], is_nil(r.following_id))
end
@doc "DELETE /api/v1/suggestions/:account_id"
def dismiss(%{assigns: %{user: source}} = conn, %{account_id: user_id}) do
with %User{} = target <- User.get_cached_by_id(user_id),
{:ok, _} <- UserRelationship.create(:suggestion_dismiss, source, target) do
json(conn, %{})
end
end
end
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