defmodule Ash.Type.UtcDatetimeUsec do
@moduledoc """
Represents a utc datetime with microsecond precision.
A builtin type that can be referenced via `:utc_datetime_usec`
"""
use Ash.Type
@impl true
def storage_type, do: :utc_datetime_usec
@impl true
def generator(_constraints) do
# Waiting on blessed date/datetime generators in stream data
# https://github.com/whatyouhide/stream_data/pull/161/files
StreamData.constant(DateTime.utc_now())
end
@impl true
def cast_input(value, _) do
Ecto.Type.cast(:utc_datetime_usec, value)
end
@impl true
def cast_stored(nil, _), do: {:ok, nil}
def cast_stored(value, constraints) when is_binary(value) do
cast_input(value, constraints)
end
def cast_stored(value, _) do
case Ecto.Type.load(:utc_datetime_usec, value) do
{:ok, value} ->
{:ok, value}
:error ->
if is_binary(value) do
case DateTime.from_iso8601(value) do
{:ok, value, _offset} ->
{:ok, value}
_ ->
:error
end
else
:error
end
end
end
@impl true
def dump_to_native(nil, _), do: {:ok, nil}
def dump_to_native(value, _) do
Ecto.Type.dump(:utc_datetime_usec, value)
end
end