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14 changes: 11 additions & 3 deletions services/app/apps/codebattle/lib/codebattle/task.ex
Original file line number Diff line number Diff line change
Expand Up @@ -195,11 +195,19 @@ defmodule Codebattle.Task do
!result
end

@spec get_task_by_tags_for_user(User.t(), list(String.t())) :: t() | nil
def get_task_by_tags_for_user(user, tags) do
__MODULE__
@spec get_task_by_tags_for_user(User.t(), list(String.t()), String.t() | nil) :: t() | nil
def get_task_by_tags_for_user(user, tags, level \\ nil) do
query = __MODULE__
|> filter_visibility(user)
|> where([t], fragment("? @> ?", t.tags, ^tags))

query = if level do
query |> where([t], t.level == ^level)
else
query
end

query
|> order_by(fragment("RANDOM()"))
|> limit(1)
|> Repo.one()
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,8 @@ defmodule CodebattleWeb.LobbyChannel do
end

defp maybe_add_task(params, %{"task_tags" => task_tags}, user) when length(task_tags) > 0 do
case Codebattle.Task.get_task_by_tags_for_user(user, task_tags) do
level = Map.get(params, :level)
case Codebattle.Task.get_task_by_tags_for_user(user, task_tags, level) do
nil -> params
task -> Map.put(params, :task, task)
end
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