struct BudgetPlan: Codable {
    let savingsGoal: Double
    var budget: Double
    private(set) var transactions: [Transaction]
    private var netToDate: Double {
        return transactions.reduce(0) { $0 + $1.amount }
    }

    mutating func addTransaction(_ newTransaction: Transaction, newMonth: Bool) {
        if (newMonth) {
            transactions = [newTransaction]
        }
        else {
            transactions.append(newTransaction)
        }
    }

    func estimateMonthlyIncome() -> Double {
        let monthlyCredit = transactions.reduce(0) { (amount, transaction) -> Double in
            return transaction.amount > 0 ? amount + transaction.amount : amount
        }
        let daysInMonth = 30.0
        let currentDay = Utilities.getDayOfMonth()
        transactions.last?.dollarAmount()
        return  (monthlyCredit / currentDay) * daysInMonth
    }

    func post() {
        DatabaseManager.shared.post(self)
    }
}