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Pure Elixir HL7 v2.x toolkit — schema-driven parsing, typed segments, message builder, MLLP transport
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lib/hl7v2/type/mo.ex
defmodule HL7v2.Type.MO do
@moduledoc """
Money (MO) -- HL7v2 composite data type.
Used for monetary amounts with optional denomination.
2 components:
1. Quantity (NM)
2. Denomination (ID) -- ISO 4217 currency code (e.g., USD, EUR)
"""
@behaviour HL7v2.Type
alias HL7v2.Type
defstruct [:quantity, :denomination]
@type t :: %__MODULE__{
quantity: binary() | nil,
denomination: binary() | nil
}
@doc """
Parses an MO from a list of components.
## Examples
iex> HL7v2.Type.MO.parse(["150.00", "USD"])
%HL7v2.Type.MO{quantity: "150.00", denomination: "USD"}
iex> HL7v2.Type.MO.parse(["250"])
%HL7v2.Type.MO{quantity: "250"}
iex> HL7v2.Type.MO.parse([])
%HL7v2.Type.MO{}
"""
@spec parse(list()) :: t()
def parse(components) when is_list(components) do
%__MODULE__{
quantity: Type.get_component(components, 0),
denomination: Type.get_component(components, 1)
}
end
@doc """
Encodes an MO to a list of component strings.
## Examples
iex> HL7v2.Type.MO.encode(%HL7v2.Type.MO{quantity: "150.00", denomination: "USD"})
["150.00", "USD"]
iex> HL7v2.Type.MO.encode(%HL7v2.Type.MO{quantity: "250"})
["250"]
iex> HL7v2.Type.MO.encode(nil)
[]
"""
@spec encode(t() | nil) :: list()
def encode(nil), do: []
def encode(%__MODULE__{} = mo) do
[
mo.quantity || "",
mo.denomination || ""
]
|> Type.trim_trailing()
end
end