implement skeleton for exchange class

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Exchange.java

@@ -1,4 +1,55 @@
 package edu.ntnu.idi.idatt2003.gruppe42.Model;
 
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Transaction.Transaction;
+
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+
 public class Exchange {
+  private String name;
+  private int week;
+  private Map<String, Stock> stockMap;
+  private Random random;
+
+  public Exchange(String name, List<Stock> stocks) {
+    this.name = name;
+    this.week = 0;
+    this.stockMap = new HashMap<String, Stock>();
+    this.random = new Random();
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public int getWeek() {
+    return week;
+  }
+
+  public boolean hasStock(String symbol) {
+    return true;
+  }
+
+  public Stock getStock(String symbol) {
+    return null;
+  }
+
+  public List<Stock> findStocks(String searchTerm) {
+    return null;
+  }
+
+  public Transaction buy(String symbol, BigDecimal quantity, Player player) {
+    return null;
+  }
+
+  public Transaction sell(Share share, Player player) {
+    return null;
+  }
+
+  public void advance() {
+    week += 1;
+  }
 }

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Transaction/Purchase.java

@@ -1,6 +1,20 @@
 package edu.ntnu.idi.idatt2003.gruppe42.Model.Transaction;
 
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Calculator.PurchaseCalculator;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Calculator.TransactionCalculator;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Player;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Share;
+
 import java.math.BigDecimal;
 
-public class Purchase {
+public class Purchase extends Transaction {
+
+  public Purchase(Share share, int week) {
+    super(share, week, new PurchaseCalculator(share));
+  }
+
+  @Override
+  public void commit(Player player) {
+
+  }
 }

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Transaction/Sale.java

@@ -1,4 +1,17 @@
 package edu.ntnu.idi.idatt2003.gruppe42.Model.Transaction;
 
-public class Sale {
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Calculator.SaleCalculator;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Player;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Share;
+
+public class Sale extends Transaction {
+
+  public Sale(Share share, int week) {
+    super(share, week, new SaleCalculator(share));
+  }
+
+  @Override
+  public void commit(Player player) {
+
+  }
 }

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Transaction/Transaction.java

@@ -1,4 +1,40 @@
 package edu.ntnu.idi.idatt2003.gruppe42.Model.Transaction;
 
-public class Transaction {
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Calculator.TransactionCalculator;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Player;
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Share;
+
+public abstract class Transaction {
+  private Share share;
+  private int week;
+  private TransactionCalculator calculator;
+  private boolean committed;
+
+  protected Transaction(Share share, int week, TransactionCalculator calculator) {
+    this.share = share;
+    this.week = week;
+    this.calculator = calculator;
+    this.committed = false;
+  }
+
+  public Share getShare() {
+    return share;
+  }
+
+  public int getWeek() {
+    return week;
+  }
+
+  public TransactionCalculator getCalculator() {
+    return calculator;
+  }
+
+  public boolean isCommitted() {
+    return committed;
+  }
+
+  public void commit(Player player) {
+
+  }
+
 }

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Transaction/TransactionArchive.java

@@ -1,4 +1,36 @@
 package edu.ntnu.idi.idatt2003.gruppe42.Model.Transaction;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class TransactionArchive {
+  private List<Transaction> transactions;
+
+  public TransactionArchive() {
+    this.transactions = new ArrayList<>();
+  }
+
+  public boolean add(Transaction transaction) {
+    return true;
+  }
+
+  public boolean isEmpty() {
+    return true;
+  }
+
+  public List<Transaction> getTransactions(int week) {
+    return transactions;
+  }
+
+  public List<Purchase> getPurchases(int week) {
+    return null;
+  }
+
+  public List<Sale> getSales(int week) {
+    return null;
+  }
+
+  public int countDistinctWeeks() {
+    return 0;
+  }
 }