58 lines
1.8 KiB
Elixir
58 lines
1.8 KiB
Elixir
defmodule Farmbot.Asset.PersistentRegimen do
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use Ecto.Schema
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import Ecto.Changeset
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@primary_key {:local_id, :binary_id, autogenerate: true}
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@timestamps_opts inserted_at: :created_at, type: :utc_datetime
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schema "persistent_regimens" do
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belongs_to(:regimen, Farmbot.Asset.Regimen, references: :local_id, type: :binary_id)
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belongs_to(:farm_event, Farmbot.Asset.FarmEvent, references: :local_id, type: :binary_id)
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field(:epoch, :utc_datetime)
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field(:started_at, :utc_datetime)
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field(:next, :utc_datetime)
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# Can't use references here.
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field(:next_sequence_id, :id)
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field(:monitor, :boolean, default: true)
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timestamps()
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end
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def changeset(persistent_regimen, params \\ %{}) do
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persistent_regimen
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|> cast(params, [:started_at, :next, :next_sequence_id, :monitor])
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|> put_epoch()
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|> cast_assoc(:regimen)
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|> cast_assoc(:farm_event)
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end
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defp put_epoch(%{valid?: true} = changeset) do
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started_at = get_field(changeset, :started_at) || DateTime.utc_now()
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if get_field(changeset, :epoch) do
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changeset
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else
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case build_epoch(started_at) do
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{:ok, epoch} -> put_change(changeset, :epoch, epoch)
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:error -> add_error(changeset, :epoch, "Missing timezone")
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end
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end
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end
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defp put_epoch(changeset), do: changeset
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# returns midnight of today
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@spec build_epoch(DateTime.t()) :: DateTime.t()
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def build_epoch(%DateTime{} = datetime) do
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case Farmbot.Asset.device().timezone do
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nil ->
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:error
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tz ->
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%DateTime{} = n = Timex.Timezone.convert(datetime, tz)
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opts = [hours: -n.hour, seconds: -n.second, minutes: -n.minute]
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localized_epoch = Timex.shift(n, opts)
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epoch = Timex.Timezone.convert(localized_epoch, datetime.time_zone)
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{:ok, epoch}
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end
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end
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end
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