cannery/lib/cannery_web/live/pack_live/form_component.ex

198 lines
5.9 KiB
Elixir

defmodule CanneryWeb.PackLive.FormComponent do
@moduledoc """
Livecomponent that can update or create an Cannery.Ammo.Pack
"""
use CanneryWeb, :live_component
alias Cannery.Ammo.{AmmoType, Pack}
alias Cannery.{Accounts.User, Ammo, Containers, Containers.Container}
alias Ecto.Changeset
alias Phoenix.LiveView.Socket
@pack_create_limit 10_000
@impl true
@spec update(
%{:pack => Pack.t(), :current_user => User.t(), optional(any) => any},
Socket.t()
) :: {:ok, Socket.t()}
def update(%{pack: _pack} = assigns, socket) do
socket |> assign(assigns) |> update()
end
@spec update(Socket.t()) :: {:ok, Socket.t()}
def update(%{assigns: %{current_user: current_user}} = socket) do
%{assigns: %{ammo_types: ammo_types, containers: containers}} =
socket =
socket
|> assign(:pack_create_limit, @pack_create_limit)
|> assign(:ammo_types, Ammo.list_ammo_types(current_user, :all))
|> assign_new(:containers, fn -> Containers.list_containers(current_user) end)
params =
if ammo_types |> List.first() |> is_nil(),
do: %{},
else: %{} |> Map.put("ammo_type_id", ammo_types |> List.first() |> Map.get(:id))
params =
if containers |> List.first() |> is_nil(),
do: params,
else: params |> Map.put("container_id", containers |> List.first() |> Map.get(:id))
{:ok, socket |> assign_changeset(params)}
end
@impl true
def handle_event("validate", %{"pack" => pack_params}, socket) do
{:noreply, socket |> assign_changeset(pack_params, :validate)}
end
def handle_event(
"save",
%{"pack" => pack_params},
%{assigns: %{action: action}} = socket
) do
save_pack(socket, action, pack_params)
end
# HTML Helpers
@spec container_options([Container.t()]) :: [{String.t(), Container.id()}]
defp container_options(containers) do
containers |> Enum.map(fn %{id: id, name: name} -> {name, id} end)
end
@spec ammo_type_options([AmmoType.t()]) :: [{String.t(), AmmoType.id()}]
defp ammo_type_options(ammo_types) do
ammo_types |> Enum.map(fn %{id: id, name: name} -> {name, id} end)
end
# Save Helpers
defp assign_changeset(
%{assigns: %{action: action, pack: pack, current_user: user}} = socket,
pack_params,
changeset_action \\ nil
) do
default_action =
case action do
create when create in [:new, :clone] -> :insert
:edit -> :update
end
changeset =
case default_action do
:insert ->
ammo_type = maybe_get_ammo_type(pack_params, user)
container = maybe_get_container(pack_params, user)
pack |> Pack.create_changeset(ammo_type, container, user, pack_params)
:update ->
pack |> Pack.update_changeset(pack_params, user)
end
changeset =
case changeset |> Changeset.apply_action(changeset_action || default_action) do
{:ok, _data} -> changeset
{:error, changeset} -> changeset
end
socket |> assign(:changeset, changeset)
end
defp maybe_get_container(%{"container_id" => container_id}, user)
when is_binary(container_id) do
container_id |> Containers.get_container!(user)
end
defp maybe_get_container(_params_not_found, _user), do: nil
defp maybe_get_ammo_type(%{"ammo_type_id" => ammo_type_id}, user)
when is_binary(ammo_type_id) do
ammo_type_id |> Ammo.get_ammo_type!(user)
end
defp maybe_get_ammo_type(_params_not_found, _user), do: nil
defp save_pack(
%{assigns: %{pack: pack, current_user: current_user, return_to: return_to}} = socket,
:edit,
pack_params
) do
socket =
case Ammo.update_pack(pack, pack_params, current_user) do
{:ok, _pack} ->
prompt = dgettext("prompts", "Ammo updated successfully")
socket |> put_flash(:info, prompt) |> push_navigate(to: return_to)
{:error, %Changeset{} = changeset} ->
socket |> assign(:changeset, changeset)
end
{:noreply, socket}
end
defp save_pack(
%{assigns: %{changeset: changeset}} = socket,
action,
%{"multiplier" => multiplier_str} = pack_params
)
when action in [:new, :clone] do
socket =
case multiplier_str |> Integer.parse() do
{multiplier, _remainder}
when multiplier >= 1 and multiplier <= @pack_create_limit ->
socket |> create_multiple(pack_params, multiplier)
{multiplier, _remainder} ->
error_msg =
dgettext(
"errors",
"Invalid number of copies, must be between 1 and %{max}. Was %{multiplier}",
max: @pack_create_limit,
multiplier: multiplier
)
save_multiplier_error(socket, changeset, error_msg)
:error ->
error_msg = dgettext("errors", "Could not parse number of copies")
save_multiplier_error(socket, changeset, error_msg)
end
{:noreply, socket}
end
@spec save_multiplier_error(Socket.t(), Changeset.t(), String.t()) :: Socket.t()
defp save_multiplier_error(socket, changeset, error_msg) do
{:error, changeset} =
changeset
|> Changeset.add_error(:multiplier, error_msg)
|> Changeset.apply_action(:insert)
socket |> assign(:changeset, changeset)
end
defp create_multiple(
%{assigns: %{current_user: current_user, return_to: return_to}} = socket,
pack_params,
multiplier
) do
case Ammo.create_packs(pack_params, multiplier, current_user) do
{:ok, {count, _packs}} ->
prompt =
dngettext(
"prompts",
"Ammo added successfully",
"Ammo added successfully",
count
)
socket |> put_flash(:info, prompt) |> push_navigate(to: return_to)
{:error, %Changeset{} = changeset} ->
socket |> assign(changeset: changeset)
end
end
end