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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.CounterCache do
   6   alias Pleroma.CounterCache
   7   alias Pleroma.Repo
   8   use Ecto.Schema
   9   import Ecto.Changeset
  10   import Ecto.Query
  11
  12   schema "counter_cache" do
  13     field(:instance, :string)
  14     field(:public, :integer)
  15     field(:unlisted, :integer)
  16     field(:private, :integer)
  17     field(:direct, :integer)
  18   end
  19
  20   def changeset(struct, params) do
  21     struct
  22     |> cast(params, [:instance, :public, :unlisted, :private, :direct])
  23     |> validate_required([:instance])
  24     |> unique_constraint(:instance)
  25   end
  26
  27   def get_by_instance(instance) do
  28     CounterCache
  29     |> select([c], %{
  30       "public" => c.public,
  31       "unlisted" => c.unlisted,
  32       "private" => c.private,
  33       "direct" => c.direct
  34     })
  35     |> where([c], c.instance == ^instance)
  36     |> Repo.one()
  37     |> case do
  38       nil -> %{"public" => 0, "unlisted" => 0, "private" => 0, "direct" => 0}
  39       val -> val
  40     end
  41   end
  42
  43   def get_sum do
  44     CounterCache
  45     |> select([c], %{
  46       "public" => type(sum(c.public), :integer),
  47       "unlisted" => type(sum(c.unlisted), :integer),
  48       "private" => type(sum(c.private), :integer),
  49       "direct" => type(sum(c.direct), :integer)
  50     })
  51     |> Repo.one()
  52   end
  53
  54   def set(instance, values) do
  55     params =
  56       Enum.reduce(
  57         ["public", "private", "unlisted", "direct"],
  58         %{"instance" => instance},
  59         fn param, acc ->
  60           Map.put_new(acc, param, Map.get(values, param, 0))
  61         end
  62       )
  63
  64     %CounterCache{}
  65     |> changeset(params)
  66     |> Repo.insert(
  67       on_conflict: [
  68         set: [
  69           public: params["public"],
  70           private: params["private"],
  71           unlisted: params["unlisted"],
  72           direct: params["direct"]
  73         ]
  74       ],
  75       returning: true,
  76       conflict_target: :instance
  77     )
  78   end
  79 end