package dev.banking;

import dev.banking.service.BankingSystem;

/**
 * Creates a ready-to-run demonstration environment.
 *
 * Students do not need to modify this class.
 */
public final class DemoFactory {

    private DemoFactory() {
    }

    /**
     * Builds a fully configured banking simulation system.
     *
     * This includes:
     * - Bank accounts
     * - Transaction stream generator / loader
     * - ExecutorService (thread pool)
     * - Transaction processor
     * - Live monitoring system
     *
     * @return configured BankingSystem instance
     */
    public static BankingSystem createDemoSystem() {

        /*
         * TODO (Instructor Implementation Only)
         *
         * Example responsibilities:
         *
         * 1. Create bank accounts:
         *    - Account(1, 1000)
         *    - Account(2, 2000)
         *    - Account(3, 1500)
         *
         * 2. Create transaction list or stream
         *
         * 3. Initialize ExecutorService:
         *    Executors.newFixedThreadPool(n)
         *
         * 4. Create TransactionProcessor
         *
         * 5. Create BankingSystem and inject dependencies
         *
         * 6. Attach LiveMonitor (optional)
         */

        throw new UnsupportedOperationException(
                "Instructor implementation required."
        );
    }
}