mirror of
https://github.com/philomena-dev/philomena.git
synced 2024-11-30 14:57:59 +01:00
60 lines
1.3 KiB
Elixir
60 lines
1.3 KiB
Elixir
defmodule Philomena.ImageFaves do
|
|
@moduledoc """
|
|
The ImageFaves context.
|
|
"""
|
|
|
|
import Ecto.Query, warn: false
|
|
alias Ecto.Multi
|
|
|
|
alias Philomena.ImageFaves.ImageFave
|
|
alias Philomena.UserStatistics
|
|
alias Philomena.Images.Image
|
|
|
|
@doc """
|
|
Creates a image_hide.
|
|
|
|
"""
|
|
def create_fave_transaction(image, user) do
|
|
fave =
|
|
%ImageFave{image_id: image.id, user_id: user.id}
|
|
|> ImageFave.changeset(%{})
|
|
|
|
image_query =
|
|
Image
|
|
|> where(id: ^image.id)
|
|
|
|
Multi.new()
|
|
|> Multi.insert(:fave, fave)
|
|
|> Multi.update_all(:inc_faves_count, image_query, inc: [faves_count: 1])
|
|
|> Multi.run(:inc_fave_stat, fn _repo, _changes ->
|
|
UserStatistics.inc_stat(user, :images_favourited, 1)
|
|
end)
|
|
end
|
|
|
|
@doc """
|
|
Deletes a ImageFave.
|
|
|
|
"""
|
|
def delete_fave_transaction(image, user) do
|
|
fave_query =
|
|
ImageFave
|
|
|> where(image_id: ^image.id)
|
|
|> where(user_id: ^user.id)
|
|
|
|
image_query =
|
|
Image
|
|
|> where(id: ^image.id)
|
|
|
|
Multi.new()
|
|
|> Multi.delete_all(:unfave, fave_query)
|
|
|> Multi.run(:dec_faves_count, fn repo, %{unfave: {faves, nil}} ->
|
|
{count, nil} =
|
|
image_query
|
|
|> repo.update_all(inc: [faves_count: -faves])
|
|
|
|
UserStatistics.inc_stat(user, :images_favourited, -faves)
|
|
|
|
{:ok, count}
|
|
end)
|
|
end
|
|
end
|