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lib/types/array_type.ex
defmodule Talos.Types.ArrayType do
@moduledoc false
defstruct [:type]
@behaviour Talos.Types
def valid?(%__MODULE__{type: type}, values) do
is_list(values) &&
Enum.all?(values, fn value ->
valid_value?(type, value)
end)
end
def errors(%__MODULE__{type: element_type} = array_type, values) do
cond do
!is_list(values) ->
["#{inspect(values)} does not match #{inspect(array_type)}"]
!valid?(array_type, values) ->
return_only_errors(element_type, values)
true ->
[]
end
end
defp return_only_errors(element_type, values) do
values
|> Enum.reject(fn val -> valid_value?(element_type, val) end)
|> Enum.map(fn element -> element_errors(element_type, element) end)
|> List.flatten()
end
defp valid_value?(nil = _element_type, _value) do
true
end
defp valid_value?(type_description, value) do
Talos.valid?(type_description, value)
end
defp element_errors(type_description, value) do
Talos.errors(type_description, value)
end
end