defmodule Corex.PasswordInput do
  @moduledoc ~S'''
  Phoenix implementation of [Zag.js Password Input](https://zagjs.com/components/react/password-input).

  ## Examples

  ### Basic

  ```heex
  <.password_input id="pwd" class="password-input">
    <:label>Password</:label>
    <:visible_indicator><.icon name="hero-eye" /></:visible_indicator>
    <:hidden_indicator><.icon name="hero-eye-slash" /></:hidden_indicator>
  </.password_input>
  ```

  ## Styling

  Use data attributes to target elements:

  ```css
  [data-scope="password-input"][data-part="root"] {}
  [data-scope="password-input"][data-part="label"] {}
  [data-scope="password-input"][data-part="control"] {}
  [data-scope="password-input"][data-part="input"] {}
  [data-scope="password-input"][data-part="visibility-trigger"] {}
  [data-scope="password-input"][data-part="indicator"] {}
  ```

  If you wish to use the default Corex styling, you can use the class `password-input` on the component.
  This requires to install `Mix.Tasks.Corex.Design` first and import the component css file.

  ```css
  @import "../corex/main.css";
  @import "../corex/tokens/themes/neo/light.css";
  @import "../corex/components/password-input.css";
  ```

  You can then use modifiers

  ```heex
  <.password_input class="password-input password-input--accent password-input--lg">
    <:visible_indicator><.icon name="hero-eye" /></:visible_indicator>
    <:hidden_indicator><.icon name="hero-eye-slash" /></:hidden_indicator>
  </.password_input>
  ```

  Learn more about modifiers and [Corex Design](https://corex-ui.com/components/password-input#modifiers)
  '''

  @doc type: :component
  use Phoenix.Component

  alias Corex.PasswordInput.Anatomy.{
    Props,
    Root,
    Label,
    Control,
    Input,
    VisibilityTrigger,
    Indicator
  }

  alias Corex.PasswordInput.Connect

  attr(:id, :string, required: false)
  attr(:visible, :boolean, default: false)
  attr(:controlled_visible, :boolean, default: false)
  attr(:disabled, :boolean, default: false)
  attr(:invalid, :boolean, default: false)
  attr(:read_only, :boolean, default: false)
  attr(:required, :boolean, default: false)
  attr(:ignore_password_managers, :boolean, default: false)
  attr(:name, :string, default: nil)
  attr(:form, :string, default: nil)
  attr(:dir, :string, default: nil, values: [nil, "ltr", "rtl"])

  attr(:auto_complete, :string,
    default: "current-password",
    values: ["current-password", "new-password"]
  )

  attr(:on_visibility_change, :string, default: nil)
  attr(:on_visibility_change_client, :string, default: nil)
  attr(:rest, :global)

  slot(:label, required: false)
  slot(:visible_indicator, required: true, doc: "Icon shown when password is visible")
  slot(:hidden_indicator, required: true, doc: "Icon shown when password is hidden")

  def password_input(assigns) do
    assigns =
      assigns
      |> assign_new(:id, fn -> "password-input-#{System.unique_integer([:positive])}" end)
      |> assign_new(:dir, fn -> "ltr" end)

    ~H"""
    <div
      id={@id}
      phx-hook="PasswordInput"
      {@rest}
      {Connect.props(%Props{
        id: @id,
        visible: @visible,
        controlled_visible: @controlled_visible,
        disabled: @disabled,
        invalid: @invalid,
        read_only: @read_only,
        required: @required,
        ignore_password_managers: @ignore_password_managers,
        name: @name,
        form: @form,
        dir: @dir,
        auto_complete: @auto_complete,
        on_visibility_change: @on_visibility_change,
        on_visibility_change_client: @on_visibility_change_client
      })}
    >
      <div phx-update="ignore" {Connect.root(%Root{id: @id, dir: @dir})}>
        <label :if={@label != []} {Connect.label(%Label{id: @id, dir: @dir})}>
          {render_slot(@label)}
        </label>
        <div {Connect.control(%Control{id: @id, dir: @dir})}>
          <input type="password" {Connect.input(%Input{id: @id, disabled: @disabled})} />
          <button type="button" {Connect.visibility_trigger(%VisibilityTrigger{id: @id, dir: @dir})}>
            <span {Connect.indicator(%Indicator{id: @id, dir: @dir})} data-state={if @visible, do: "visible", else: "hidden"}>
              <span data-visible="" aria-hidden="true">{render_slot(@visible_indicator)}</span>
              <span data-hidden="" aria-hidden="true">{render_slot(@hidden_indicator)}</span>
            </span>
          </button>
        </div>
      </div>
    </div>
    """
  end
end