Initial commit

lib/iban_ex/deserialize.ex

@@ -0,0 +1,49 @@
+defprotocol IbanEx.Deserialize do
+  @type iban_or_error() :: IbanEx.Iban.t() | {:error, :can_not_parse_map | atom()}
+  @spec to_iban(t()) :: iban_or_error()
+  def to_iban(value)
+end
+
+defimpl IbanEx.Deserialize, for: [BitString, String] do
+  alias IbanEx.{Parser, Error}
+  @type iban_or_error() :: IbanEx.Iban.t() | {:error, atom()}
+  @spec to_iban(String.t()) :: iban_or_error()
+  @spec to_iban(binary()) :: IbanEx.Iban.t()
+  def to_iban(string) do
+    case Parser.parse(string) do
+      {:ok, iban} -> iban
+      {:error, error_code} -> {error_code, Error.message(error_code)}
+    end
+  end
+end
+
+defimpl IbanEx.Deserialize, for: Map do
+  alias IbanEx.Iban
+  @type iban_or_error() :: IbanEx.Iban.t() | {:error, :can_not_parse_map}
+
+  @spec to_iban(map()) :: iban_or_error()
+  def to_iban(
+        %{
+          country_code: _country_code,
+          check_digits: _check_sum_digits,
+          bank_code: _bank_code,
+          account_number: _account_number
+        } = map
+      ) do
+    struct(Iban, map)
+  end
+
+  def to_iban(
+        %{
+          "country_code" => _country_code,
+          "check_digits" => _check_sum_digits,
+          "bank_code" => _bank_code,
+          "account_number" => _account_number
+        } = map
+      ) do
+    atomized_map = for {key, val} <- map, into: %{}, do: {String.to_atom(key), val}
+    to_iban(atomized_map)
+  end
+
+  def to_iban(map) when is_map(map), do: {:error, :can_not_parse_map}
+end