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Dala is a native mobile framework for Elixir powered by the BEAM VM. Build iOS and Android apps with OTP, lightweight processes, fault tolerance, AI/ML.

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dala lib dala storage files.ex
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lib/dala/storage/files.ex 

defmodule Dala.Storage.Files do

  @compile {:nowarn_undefined, [:Nx]}

  @moduledoc """

  System file picker. Opens the OS document picker (Files app on iOS, SAF on Android).



  No permission required — the user explicitly selects files.



  Results arrive as:



      handle_info({:files, :picked,    items},   socket)

      handle_info({:files, :cancelled},           socket)



  Each item in `items` is:



      %{path: "/tmp/dala_file_xxx.pdf", name: "report.pdf",

        mime: "application/pdf", size: 102400}



  iOS: `UIDocumentPickerViewController`. Android: `OpenMultipleDocuments`.

  """



  @doc """

  Open the system file picker.



  Options:

    * `:types` — list of MIME type patterns (default: `["*/*"]`)



  Results arrive via `handle_info` as `{:files, :picked, items}` or

  `{:files, :cancelled}`.



  Returns the socket unchanged.

  """

  @spec pick(Dala.Socket.t(), keyword()) :: Dala.Socket.t()

  def pick(socket, opts \\ []) do

    types = Keyword.get(opts, :types, ["*/*"])

    types_json = :json.encode(types)

    Dala.Platform.Native.files_pick(types_json)

    socket

  end

end