package bank;

import bank.exceptions.TransactionAttributeException;
import com.google.gson.*;

public abstract class Transaction implements CalculateBill{
    /**
     * protected vars, which must be available throughout the whole package
     */
    protected String date;
    protected double amount;
    protected String description;

    /**
     * Sets the amount of the payment.
     *
     * @param newAmount The new amount for the payment.
     */
    public void setAmount(double newAmount) throws TransactionAttributeException {
        this.amount = newAmount;
    }

    /**
     * Gets the amount of the payment.
     *
     * @return The amount of the payment.
     */
    public double getAmount() {
        return amount;
    }

    /**
     * Sets the description of the payment.
     *
     * @param newDescription The new description for the payment.
     */
    public void setDescription(String newDescription) {
        this.description = newDescription;
    }

    /**
     * Gets the description of the payment.
     *
     * @return The description of the payment.
     */
    public String getDescription() {
        return description;
    }

    /**
     * Sets the date of the payment.
     *
     * @param newDate The new date for the payment.
     */
    public void setDate(String newDate) {
        this.date = newDate;
    }

    /**
     * Gets the date of the payment.
     *
     * @return The date of the payment.
     */
    public String getDate() {
        return date;
    }

    /**
     * Constructor for creating a transaction with date, amount, and description
     *
     * @param newDate        The date of the transfer.
     * @param newAmount      The amount of the transfer.
     * @param newDescription The description of the transfer.
     */
    public Transaction(String newDate, double newAmount, String newDescription) throws TransactionAttributeException {
        this.setAmount(newAmount);
        this.setDescription(newDescription);
        this.setDate(newDate);
    }

    /**
     * Prints the transaction details to the console.
     * Amount is printed in the extended class, because of
     * different conditions to be checked
     */
    @Override
    public String toString() {
        return ("\n       Date: " + this.getDate() +
                "\nDescription: " + this.getDescription() +
                "\n     Amount: " + this.calculate()
        );
    }

    /**
     * Compares obj with current transaction
     *
     * @param obj The object to compare with
     * @return Result of the comparison
     */
    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Transaction) {
            Transaction other = (Transaction) obj;
            return (
                this.getDate().equals(other.getDate()) &&
                this.getAmount() == other.getAmount() &&
                this.getDescription().equals(other.getDescription())
            );
        }
        return false;
    }


}