mobilizon.chapril.org-mobil.../lib/mix/tasks/mobilizon/move_participant_stats.ex

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defmodule Mix.Tasks.Mobilizon.MoveParticipantStats do
@moduledoc """
Temporary task to move participant stats in the events table
This task will be removed in version 1.0.0-beta.3
"""
use Mix.Task
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import Ecto.Query
alias Mobilizon.Events
alias Mobilizon.Events.Event
alias Mobilizon.Events.ParticipantRole
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alias Mobilizon.Storage.Repo
require Logger
@shortdoc "Move participant stats to events table"
def run([]) do
Mix.Task.run("app.start")
events =
Event
|> preload([e], :tags)
|> Repo.all()
nb_events = length(events)
IO.puts(
"\nStarting inserting participants stats into #{nb_events} events, this can take a while…\n"
)
insert_participants_stats_into_events(events, nb_events)
end
defp insert_participants_stats_into_events([%Event{url: url} = event | events], nb_events) do
with roles <- ParticipantRole.__enum_map__(),
counts <-
Enum.reduce(roles, %{}, fn role, acc ->
Map.put(acc, role, count_participants(event, role))
end),
{:ok, _} <-
Events.update_event(event, %{
participant_stats: counts
}) do
Logger.debug("Added participants stats to event #{url}")
else
{:error, res} ->
Logger.error("Error while adding participants stats to event #{url} : #{inspect(res)}")
end
ProgressBar.render(nb_events - length(events), nb_events)
insert_participants_stats_into_events(events, nb_events)
end
defp insert_participants_stats_into_events([], nb_events) do
IO.puts("\nFinished inserting participant stats for #{nb_events} events!\n")
end
defp count_participants(%Event{id: event_id}, role) when is_atom(role) do
event_id
|> Events.count_participants_query()
|> Events.filter_role(role)
|> Repo.aggregate(:count, :id)
end
end