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defmodule WalletIntegrations.Commands.CancelPayment do |
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@moduledoc """ |
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Enqueue a cancel request for a pending payment at the provider. |
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The PaymentRequest must not be in a terminal state. The actual cancellation |
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dispatch is handled asynchronously by PaymentWorker. |
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Returns `{:ok, PaymentRequest.t()}` (pre-cancel state) or `{:error, reason}`. |
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""" |
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alias WalletIntegrations.{PaymentRequest, PaymentRequestStore, JobQueue} |
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alias WalletIntegrations.Workers.PaymentWorker |
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alias WalletObservability.AuditEvent |
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@spec execute(request_id :: String.t(), opts :: keyword()) :: |
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{:ok, PaymentRequest.t()} | {:error, term()} |
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def execute(request_id, opts \\ []) do |
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correlation_id = |
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Keyword.get(opts, :correlation_id, WalletSharedKernel.Correlation.new_correlation_id()) |
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with {:ok, request} <- PaymentRequestStore.get(request_id), |
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false <- PaymentRequest.terminal?(request), |
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{:ok, _job_id} <- |
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JobQueue.enqueue(:integrations_payment, PaymentWorker, %{ |
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"request_id" => request_id, |
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"operation" => "cancel", |
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"correlation_id" => correlation_id |
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}) do |
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emit_audit(request_id, correlation_id, :success, %{provider: request.provider}) |
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{:ok, request} |
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else |
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true -> {:error, :payment_already_terminal} |
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:-( |
err -> err |
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end |
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rescue |
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:-( |
error -> {:error, error} |
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end |
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defp emit_audit(request_id, correlation_id, outcome, metadata) do |
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audit = |
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AuditEvent.build(:integrations, "cancel_payment", "payment_request", request_id, |
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outcome, |
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correlation_id: correlation_id, |
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metadata: metadata |
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) |
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:telemetry.execute([:wallet_integrations, :audit], %{}, audit) |
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rescue |
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:-( |
_ -> :ok |
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end |
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end |