36 lines
1.1 KiB
Elixir
36 lines
1.1 KiB
Elixir
defmodule UkraineTaxidEx.Itin.Validator do
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@moduledoc """
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Validator module for Ukrainian Individual Taxpayer Identification Number (ITIN/IPN).
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Handles validation of ITIN numbers according to Ukrainian tax authority requirements.
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Validates an ITIN number to check if it meets length requirements and has a valid checksum.
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Returns:
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* `{:ok, itin}` if validation successful
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* `{:error, :length_too_short}` if shorter than required length
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* `{:error, :length_too_long}` if longer than required length
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* `{:error, :invalid_checksum}` if checksum is invalid
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Examples:
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```elixir
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iex> UkraineTaxidEx.Itin.Validator.validate("3184710691")
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{:ok, "3184710691"}
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iex> UkraineTaxidEx.Itin.Validator.validate("123456")
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{:error, :length_too_short}
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iex> UkraineTaxidEx.Itin.Validator.validate("12345678901")
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{:error, :length_too_long}
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iex> UkraineTaxidEx.Itin.Validator.validate("3184710692")
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{:error, :invalid_checksum}
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```
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"""
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import UkraineTaxidEx.Itin, only: [length: 0]
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import UkraineTaxidEx.Itin.CheckSum, only: [check_sum: 1]
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use UkraineTaxidEx.BaseValidator
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end
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