Vibescript Showcase

Refund decision

Use enums, money, and durations to decide whether to refund an order.

Showcase

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Sourceshowcase/policies/refund_decision.vibe
type RunResult = {
  denied: { age: string, decision: string, refund: money, used: bool },
  full: { age: string, decision: string, refund: money, used: bool },
  partial: { age: string, decision: string, refund: money, used: bool }
}

enum RefundDecision
  Full
  Partial
  Denied
end

def refund_decision(age: duration, used: bool) -> RefundDecision
  if age <= 7.days && !used
    RefundDecision::Full
  elsif age <= 30.days
    RefundDecision::Partial
  else
    RefundDecision::Denied
  end
end

def refund_amount(total: money, decision: RefundDecision) -> money
  if decision == RefundDecision::Full
    total
  elsif decision == RefundDecision::Partial
    total - money("15.00 USD")
  else
    money("0.00 USD")
  end
end

def refund_quote(
  total: money,
  purchased_at: time,
  requested_at: time,
  used: bool
) -> { age: string, decision: string, refund: money, used: bool }
  age = Duration.build(seconds: (requested_at - purchased_at).to_i)
  decision = refund_decision(age, used)

  {
    decision: decision.name,
    age: age.iso8601,
    used: used,
    refund: refund_amount(total, decision)
  }
end

def run -> RunResult
  purchased_at = Time.at(1700000000)
  {
    full: refund_quote(money("89.00 USD"), purchased_at, 3.days.after(purchased_at), false),
    partial: refund_quote(money("89.00 USD"), purchased_at, 14.days.after(purchased_at), true),
    denied: refund_quote(money("89.00 USD"), purchased_at, 45.days.after(purchased_at), true)
  }
end

Output

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