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Elixir SDK for the Stellar network.
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lib/tx_build/signer.ex
defmodule Stellar.TxBuild.Signer do
@moduledoc """
`Signer` struct definition.
"""
alias Stellar.TxBuild.{Weight, SignerKey}
alias StellarBase.XDR.Signer
@behaviour Stellar.TxBuild.XDR
@type validation :: {:ok, any()} | {:error, atom()}
@type t :: %__MODULE__{signer_key: SignerKey.t(), weight: Weight.t()}
defstruct [:signer_key, :weight]
@impl true
def new(args, opts \\ [])
def new([{signer_type, signer_key}, {:weight, weight}], _opts) do
with {:ok, signer_key} <- validate_signer_key({signer_type, signer_key}),
{:ok, weight} <- validate_signer_weight(weight) do
%__MODULE__{signer_key: signer_key, weight: weight}
end
end
def new(_args, _opts), do: {:error, :invalid_signer}
@impl true
def to_xdr(%__MODULE__{signer_key: signer_key, weight: weight}) do
weight_xdr = Weight.to_xdr(weight)
signer_key
|> SignerKey.to_xdr()
|> Signer.new(weight_xdr)
end
@spec validate_signer_weight(weight :: non_neg_integer()) :: validation()
defp validate_signer_weight(weight) do
case Weight.new(weight) do
%Weight{} = weight -> {:ok, weight}
{:error, _reason} -> {:error, :invalid_signer_weight}
end
end
@spec validate_signer_key(signer_key :: tuple()) :: validation()
defp validate_signer_key(signer_key) do
case SignerKey.new(signer_key) do
%SignerKey{} = signer_key -> {:ok, signer_key}
_error -> {:error, :invalid_signer_key}
end
end
end