117 lines
3.1 KiB
Elixir
117 lines
3.1 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Marker do
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use Ecto.Schema
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import Ecto.Changeset
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import Ecto.Query
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alias Ecto.Multi
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alias Pleroma.Notification
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alias Pleroma.Repo
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alias Pleroma.User
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alias __MODULE__
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@timelines ["notifications"]
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@type t :: %__MODULE__{}
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schema "markers" do
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field(:last_read_id, :string, default: "")
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field(:timeline, :string, default: "")
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field(:lock_version, :integer, default: 0)
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field(:unread_count, :integer, default: 0, virtual: true)
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belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
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timestamps()
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end
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@doc "Gets markers by user and timeline."
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@spec get_markers(User.t(), list(String)) :: list(t())
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def get_markers(user, timelines \\ []) do
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user
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|> get_query(timelines)
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|> unread_count_query()
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|> Repo.all()
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end
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@spec upsert(User.t(), map()) :: {:ok | :error, any()}
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def upsert(%User{} = user, attrs) do
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attrs
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|> Map.take(@timelines)
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|> Enum.reduce(Multi.new(), fn {timeline, timeline_attrs}, multi ->
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marker =
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user
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|> get_marker(timeline)
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|> changeset(timeline_attrs)
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Multi.insert(multi, timeline, marker,
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returning: true,
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on_conflict: {:replace, [:last_read_id]},
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conflict_target: [:user_id, :timeline]
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)
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end)
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|> Repo.transaction()
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end
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@spec multi_set_last_read_id(Multi.t(), User.t(), String.t()) :: Multi.t()
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def multi_set_last_read_id(multi, %User{} = user, "notifications") do
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multi
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|> Multi.run(:counters, fn _repo, _changes ->
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{:ok, %{last_read_id: Repo.one(Notification.last_read_query(user))}}
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end)
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|> Multi.insert(
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:marker,
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fn %{counters: attrs} ->
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%Marker{timeline: "notifications", user_id: user.id}
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|> struct(attrs)
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|> Ecto.Changeset.change()
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end,
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returning: true,
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on_conflict: {:replace, [:last_read_id]},
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conflict_target: [:user_id, :timeline]
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)
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end
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def multi_set_last_read_id(multi, _, _), do: multi
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defp get_marker(user, timeline) do
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case Repo.find_resource(get_query(user, timeline)) do
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{:ok, marker} -> %__MODULE__{marker | user: user}
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_ -> %__MODULE__{timeline: timeline, user_id: user.id}
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end
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end
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@doc false
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defp changeset(marker, attrs) do
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marker
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|> cast(attrs, [:last_read_id])
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|> validate_required([:user_id, :timeline, :last_read_id])
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|> validate_inclusion(:timeline, @timelines)
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end
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defp by_timeline(query, timeline) do
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from(m in query, where: m.timeline in ^List.wrap(timeline))
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end
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defp by_user_id(query, id), do: from(m in query, where: m.user_id == ^id)
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defp get_query(user, timelines) do
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__MODULE__
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|> by_user_id(user.id)
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|> by_timeline(timelines)
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end
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defp unread_count_query(query) do
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from(
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q in query,
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left_join: n in "notifications",
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on: n.user_id == q.user_id and n.seen == false,
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group_by: [:id],
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select_merge: %{
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unread_count: fragment("count(?)", n.id)
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}
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)
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end
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end
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