Basic project structure finished

src/main/java/edu/ntnu/idi/idatt/Exchange.java

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+package edu.ntnu.idi.idatt;
+
+import edu.ntnu.idi.idatt.marked.Share;
+import edu.ntnu.idi.idatt.marked.Stock;
+import edu.ntnu.idi.idatt.transaction.Purchase;
+import edu.ntnu.idi.idatt.transaction.Sale;
+import edu.ntnu.idi.idatt.transaction.Transaction;
+
+import java.math.BigDecimal;
+import java.util.*;
+
+public class Exchange {
+
+    //TODO: JavaDocs, Write over functions mby
+
+    private final String name;
+    private int week;
+    private HashMap<String, Stock> stockMap = new HashMap<>();
+    private Random random = new Random();
+
+    public Exchange(String name, List<Stock> stocks) {
+        this.name = name;
+        this.week = 1;
+
+        for(Stock stock : stocks){
+            stockMap.put(stock.getSymbol(), stock);
+        }
+
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getWeek() {
+        return week;
+    }
+
+    public boolean hasStock(String symbol) {
+        return stockMap.containsKey(symbol);
+    }
+
+    public Stock getStock(String symbol) {
+        if(this.hasStock(symbol)){
+            stockMap.get(symbol);
+        }
+        return null; //TODO: Exception
+    }
+
+    public List<Stock> findStocks(String searchTerm) {
+        ArrayList<Stock> stocksFound = new ArrayList<>();
+
+        for(Stock stock : stockMap.values()) {
+            if(stock.getCompany().contains(searchTerm) || stock.getSymbol().contains(searchTerm)){
+                stocksFound.add(stock);
+            }
+        }
+        return stocksFound;
+    }
+
+    public Transaction buy(String symbol, BigDecimal quantity, Player player) {
+        Share share = new Share(getStock(symbol), quantity, BigDecimal.valueOf(random.nextDouble()));
+        Purchase purchase = new Purchase(share, this.week);
+        purchase.commit(player);
+        return player.getTransactionArchive().getPurchases(this.week).getLast();
+    }
+
+    public Transaction sell(Share share, Player player) {
+        Sale sale = new Sale(share, this.week);
+        sale.commit(player);
+        return player.getTransactionArchive().getSales(this.week).getLast();
+    }
+
+    public void advance() {
+        for(Stock stocks : stockMap.values()) {
+            stocks.addNewSalesPrice(BigDecimal.valueOf(random.nextDouble()));
+        }
+    }
+
+
+}

src/main/java/edu/ntnu/idi/idatt/Player.java

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+package edu.ntnu.idi.idatt;
+
+import edu.ntnu.idi.idatt.marked.Portfolio;
+import edu.ntnu.idi.idatt.transaction.TransactionArchive;
+
+import java.math.BigDecimal;
+
+public class Player {
+
+    private final String name;
+    private final BigDecimal startingMoney;
+    private BigDecimal money;
+    private Portfolio portfolio = new Portfolio();
+    private TransactionArchive transactionArchive = new TransactionArchive();
+
+    public Player(String name, BigDecimal startingMoney) {
+        this.name = name;
+        this.startingMoney = startingMoney;
+        this.money = this.startingMoney;
+    }
+
+    /**
+     * Getters
+     *
+     * @return - Their corresponding variables.
+     */
+
+    public String getName() {
+        return name;
+    }
+
+    public BigDecimal getMoney() {
+        return money;
+    }
+
+    public Portfolio getPortfolio() {
+        return portfolio;
+    }
+
+    public TransactionArchive getTransactionArchive() {
+        return transactionArchive;
+    }
+
+    /**
+     * Setters for money
+     *
+     * @param amount - Amount to be changed correspondingly.
+     */
+
+    public void addMoney(BigDecimal amount){
+        this.money = this.money.add(amount);
+    }
+
+    public void withdrawMoney(BigDecimal amount){
+        this.money = this.money.subtract(amount);
+    }
+}

src/main/java/edu/ntnu/idi/idatt/calculator/PurchaseCalculator.java

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+package edu.ntnu.idi.idatt.calculator;
+
+import edu.ntnu.idi.idatt.marked.Share;
+
+import java.math.BigDecimal;
+
+/**
+ * PurchaseCalculator class
+ *
+ * <p>Calculates transaction price based on
+ * share bought.</p>
+ *
+ */
+public class PurchaseCalculator implements TransactionCalculator{
+
+    private final BigDecimal purchasePrice;
+    private final BigDecimal quantity;
+
+    /**
+     * Constructor for PurchaseCalculator
+     *
+     * @param share - The bought share
+     */
+    public PurchaseCalculator(Share share){
+        this.purchasePrice = share.getPurchasePrice();
+        this.quantity = share.getQuantity();
+    }
+
+    /**
+     * Method that calculates gross value
+     *
+     * @return - BigDecimal of purchase price x share quantity
+     */
+    @Override
+    public BigDecimal calculateGross() {
+        return purchasePrice.multiply(quantity);
+    }
+
+    /**
+     * Method that calculates the commission fee
+     *
+     * @return - BigDecimal of gross value x 0.5%.
+     */
+    @Override
+    public BigDecimal calculateCommision() {
+        BigDecimal fee = BigDecimal.valueOf(0.005); // Corresponding to 0.5%
+        return calculateGross().multiply(fee);
+    }
+
+    /**
+     * Method that calculates the tax
+     *
+     * @return - BigDecimal of 0 based on project requirements.
+     */
+    @Override
+    public BigDecimal calculateTax() {
+        return BigDecimal.ZERO;
+    }
+
+    /**
+     * Method that calculates the total price of a bought share
+     *
+     * @return - BigDecimal of gross value + commision fee + tax
+     */
+    @Override
+    public BigDecimal calculateTotal() {
+        return calculateGross().add(calculateCommision()).add(calculateTax());
+    }
+
+}

src/main/java/edu/ntnu/idi/idatt/calculator/SaleCalculator.java

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+package edu.ntnu.idi.idatt.calculator;
+
+import edu.ntnu.idi.idatt.marked.Share;
+
+import java.math.BigDecimal;
+
+
+/**
+ * SaleCalculator class
+ *
+ * <p>Calculates transaction profit based on
+ * share sold.</p>
+ *
+ */
+public class SaleCalculator implements TransactionCalculator{
+
+    private final BigDecimal purchasePrice;
+    private final BigDecimal salesPrice;
+    private final BigDecimal quantity;
+
+    /**
+     * Constructor for SaleCaculator
+     *
+     * @param share - The sold share
+     */
+    public SaleCalculator(Share share){
+        this.purchasePrice = share.getPurchasePrice();
+        this.salesPrice = BigDecimal.ZERO;  //TODO: Implement here
+        this.quantity = share.getQuantity();
+    }
+
+    /**
+     * Method that calculates gross value
+     *
+     * @return - BigDecimal of sale price x share quantity
+     */
+    @Override
+    public BigDecimal calculateGross() {
+        return salesPrice.multiply(quantity);
+    }
+
+    /**
+     * Method that calculates the commission fee
+     *
+     * @return - BigDecimal of gross value x 1%.
+     */
+    @Override
+    public BigDecimal calculateCommision() {
+        BigDecimal fee = BigDecimal.valueOf(0.01); // Corresponding to 1%
+        return calculateGross().multiply(fee);
+    }
+
+    /**
+     * Method that calculates the tax
+     *
+     * @return - BigDecimal of 30% of profit (gross - purchase price x quantity)
+     */
+    @Override
+    public BigDecimal calculateTax() {
+        BigDecimal taxPercentage = BigDecimal.valueOf(0.3); // Corresponding to 30%
+        BigDecimal profit = calculateGross().subtract(purchasePrice.multiply(quantity)); // gross - purchase price x quanitity
+        return profit.multiply(taxPercentage);
+
+    }
+
+    /**
+     * Method that calculates the total profit of a sold share
+     *
+     * @return - BigDecimal of gross value - commision fee - tax
+     */
+    @Override
+    public BigDecimal calculateTotal() {
+        return calculateGross().subtract(calculateCommision()).subtract(calculateTax());
+    }
+
+}

src/main/java/edu/ntnu/idi/idatt/calculator/TransactionCalculator.java

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+package edu.ntnu.idi.idatt.calculator;
+
+import java.math.BigDecimal;
+
+/**
+ * TransactionCalculator interface
+ *
+ * <p>Contains methods that are used upon doing a transaction
+ * corresponding to a share and a week.</p>
+ * @see PurchaseCalculator
+ * @see SaleCalculator
+ *
+ */
+public interface TransactionCalculator {
+
+    BigDecimal calculateGross();                    // Gross        - Norsk: verdi før avgifter
+    BigDecimal calculateCommision();                // Commision    - Norsk: (Kurtasje) En avgift som betales til megleren.
+    BigDecimal calculateTax();                      // Tax          - Norsk: Skatt, en avgift som betales til staten.
+    BigDecimal calculateTotal();                    //                Totalverdi etter avgifter
+
+}

src/main/java/edu/ntnu/idi/idatt/marked/Portfolio.java

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+package edu.ntnu.idi.idatt.marked;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Portfolio class
+ *
+ * <p>Class that functions as a wallet for a player
+ * storing all results of transactions made.</p>
+ *
+ */
+public class Portfolio {
+
+    private ArrayList<Share> shares;
+
+    /**
+     * Setter for ArrayList shares.
+     *
+     * @param share - The bought share
+     * @return - was the list modified?
+     */
+    public boolean addShare(Share share){
+        return shares.add(share);
+    }
+
+    /**
+     * Setter for ArrayList shares.
+     *
+     * @param share - The sold share
+     * @return - was the list modified?
+     */
+    public boolean removeShare(Share share){
+        return shares.add(share);
+    }
+
+    /**
+     * Getter for ArrayList shares.
+     *
+     * @return - List of all shares owned.
+     */
+    public List<Share> getShares() {
+        return shares;
+    }
+
+    /**
+     * Getter for ArrayList shares.
+     *
+     * @param symbol - The symbol of the stock corresponding to the share.
+     * @return - List of shares owned that corresponds with a company symbol.
+     */
+    public List<Share> getShares(String symbol) {
+        return shares.stream().filter(s -> s.getStock().getSymbol().equals(symbol)).toList();
+    }
+
+    /**
+     * Method for checking if the portfolio contains a specific share
+     *
+     * @return - If the share was found.
+     */
+    public boolean contains(Share share) {
+        return shares.contains(share);
+    }
+
+}