Created
August 19, 2024 04:14
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Absinthe Graphql Schema Scalar Phone Number
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| defmodule AppWeb.Graphql.Schema.Types.Custom.PhoneNumber do | |
| @moduledoc """ | |
| The phone number scalar type. | |
| """ | |
| use Absinthe.Schema.Notation | |
| require Logger | |
| require OK | |
| scalar :phone_number, name: "PhoneNumber", open_ended: true do | |
| description(""" | |
| Phone number in e164 format | |
| """) | |
| serialize(&encode/1) | |
| parse(&decode/1) | |
| end | |
| @spec decode(Absinthe.Blueprint.Input.String.t()) :: {:ok, term()} | :error | |
| @spec decode(Absinthe.Blueprint.Input.Integer.t()) :: {:ok, term()} | :error | |
| @spec decode(Absinthe.Blueprint.Input.Null.t()) :: {:ok, nil} | |
| defp decode(%Absinthe.Blueprint.Input.String{value: value}) do | |
| cast(value) | |
| end | |
| defp decode(%Absinthe.Blueprint.Input.Integer{value: value}) do | |
| cast(value) | |
| end | |
| defp decode(%Absinthe.Blueprint.Input.Null{}) do | |
| {:ok, nil} | |
| end | |
| defp decode(_) do | |
| :error | |
| end | |
| defp encode(value) do | |
| value | |
| end | |
| def cast(integer) when is_integer(integer), do: Kernel.to_string(integer) |> cast() | |
| def cast(string) when is_binary(string) do | |
| normalized_string = | |
| string | |
| |> String.replace(~r/[-.() ]/, "") | |
| |> String.replace(~r/^\+?0*/, "") | |
| with true <- Regex.match?(~r/^\d+$/, normalized_string), | |
| {:ok, ex_phone_number} <- ExPhoneNumber.parse("+" <> normalized_string, nil), | |
| true <- ExPhoneNumber.is_valid_number?(ex_phone_number), | |
| e164_string <- ExPhoneNumber.format(ex_phone_number, :e164) do | |
| {:ok, e164_string} | |
| else | |
| _ -> :error | |
| end | |
| end | |
| def cast(nil), do: {:ok, nil} | |
| def cast(_), do: :error | |
| end |
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