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lib/shippex.ex
defmodule Shippex do
defmodule InvalidConfigError do
defexception [:message]
def exception(message) do
"Invalid config: #{message}"
end
end
@doc """
config :shippex, :carriers, [
ups: [
username: "MyUsername",
password: "MyPassword",
secret_key: "123123",
shipper_number: "AB1234"
]
]
"""
def config do
case Application.get_env(:shippex, :carriers, :not_found) do
:not_found -> raise InvalidConfigError,
message: "Shippex config not found"
config -> config
end
end
end