Dynamic Orb module

Mix.install([:orb, :orb_wasmtime])

Section

defmodule CurrentUser do
  def get_id() do
    Process.get(:user_id) || raise "User ID must be set."
  end

  def get_type() do
    Process.get(:user_type, :viewer)
  end

  def get() do
    %{
      type: get_type(),
      id: get_id()
    }
  end
end

defmodule DynamicExample do
  use Orb

  defw can_edit?(post_id: I32, author_id: I32), I32 do
    inline do
      case CurrentUser.get() do
        %{type: :viewer, id: user_id} ->
          wasm do
            author_id === user_id
          end

        %{type: :admin} ->
          1
      end
    end
  end
end

Process.put(:user_type, :viewer)
Process.put(:user_id, 1234)

wat = Orb.to_wat(DynamicExample)
IO.puts(wat)

OrbWasmtime.Wasm.call(wat, :can_edit?, 42, 1234)
|> IO.inspect(label: "can edit post by user 1234")

OrbWasmtime.Wasm.call(wat, :can_edit?, 42, 1235)
|> IO.inspect(label: "can edit post by user 1235")

OrbWasmtime.Wasm.call(wat, :can_edit?, 42, 876)
|> IO.inspect(label: "can edit post by user 876")

:ok

Process.put(:user_type, :admin)
Process.put(:user_id, 1)

wat = Orb.to_wat(DynamicExample)
IO.puts(wat)

OrbWasmtime.Wasm.call(wat, :can_edit?, 42, 1234)
|> IO.inspect(label: "can edit post by user 1234")

OrbWasmtime.Wasm.call(wat, :can_edit?, 42, 1235)
|> IO.inspect(label: "can edit post by user 1235")

OrbWasmtime.Wasm.call(wat, :can_edit?, 42, 876)
|> IO.inspect(label: "can edit post by user 876")

:ok