import java.util.*;
import java.io.*;

public class Match {


	public ArrayList<Account> readOldMaster() throws FileNotFoundException, IOException, ClassNotFoundException {
		ArrayList<Account> masterAccount = new ArrayList<Account>();
		try (ObjectInputStream input = new ObjectInputStream(new FileInputStream("mainmasterfile.ser"))) {
			while (true) {
				masterAccount.add((Account) (input.readObject()));
			}
		} catch (EOFException e) {

		}
		return masterAccount;
	}

	public ArrayList<TransactionRecord> readTransaction() throws FileNotFoundException, IOException, ClassNotFoundException {
		ArrayList<TransactionRecord> masterRecord = new ArrayList<TransactionRecord>();
		try (ObjectInputStream input = new ObjectInputStream(new FileInputStream("transactions.ser"))) {
			while (true) {
				masterRecord.add((TransactionRecord) (input.readObject()));
			}

		} catch (EOFException e) {

		}
		return masterRecord;
	}

	public ArrayList<Account> readNewMaster() throws FileNotFoundException, IOException, ClassNotFoundException {
		ArrayList<Account> newMasterAccount = new ArrayList<Account>();
		try (ObjectInputStream input = new ObjectInputStream(new FileInputStream("newmainmaster.ser"))) {
			while (true) {
				newMasterAccount.add((Account) (input.readObject()));
			}
		} catch (EOFException e) {

		}
		return newMasterAccount;
	}

	public void matchFiles() throws FileNotFoundException, IOException, ClassNotFoundException {
		ObjectOutputStream outNewMainMaster = new ObjectOutputStream(new FileOutputStream("newmainmaster.ser"));
		ArrayList<Account> oldMaster = this.readOldMaster();
		ArrayList<TransactionRecord> Records = this.readTransaction();

		for (TransactionRecord Trans : Records) {
			boolean seenAccount = false;

			for (Account Item : oldMaster) {
				if (Item.getAccount() == Trans.getAccount()) {
					double newbalance;
					newbalance = Trans.getAmount() + Item.getBalance();
					Item.setBalance(newbalance);
					seenAccount = true;
				}
			}

			if (!seenAccount) {
				FileWriter File = new FileWriter("log.txt");
				PrintWriter Print = new PrintWriter(File);
				Print.printf("unmatched transaction record for account number..." + Trans.getAccount());
				Print.close();
			}

		}

		for (Account Item : oldMaster) {
			outNewMainMaster.writeObject(Item);
		}

		if (outNewMainMaster != null)
			outNewMainMaster.close();
	}

}