Mappe del2 to main

src/main/java/Controller/StockFileHandler.java

@@ -0,0 +1,53 @@
+package Controller;
+import java.nio.file.*;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+import Model.Stock;
+
+public class StockFileHandler {
+
+    // lesing
+    public List<Stock> loadStocksFromFile(String filename) throws IOException {
+        List<Stock> stocks = new ArrayList<>();
+        List<String> lines = Files.readAllLines(Paths.get(filename));
+
+        for (String line : lines) {
+            line = line.trim();
+            if (line.isEmpty() || line.startsWith("#")) {
+                continue;
+            }
+
+            String[] parts = line.split(",");
+            if (parts.length == 3) {
+                String symbol = parts[0];
+                String name = parts[1];
+                BigDecimal price = new BigDecimal(parts[2]);
+
+                stocks.add(new Stock(symbol, name, price));
+            }
+        }
+        return stocks; // returnerer listen 
+    }
+
+    // lagring
+    public void saveStocksToFile(String filename, List<Stock> stocks) throws IOException {
+        List<String> lines = new ArrayList<>();
+
+        // header 
+        lines.add("# Ticker,Name,Price");
+
+        for (Stock stock : stocks) {
+            // formaterer hver aksje som "SYMBOL,NAME,PRICE"
+            String line = String.format("%s,%s,%s", 
+                stock.getSymbol(), 
+                stock.getCompany(), 
+                stock.getSalesPrice().toString());
+            lines.add(line);
+        }
+
+        Files.write(Paths.get(filename), lines);
+    }
+}

src/main/java/Exchange.java → src/main/java/Model/Exchange.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -109,6 +110,17 @@ public void advance() {
         }
     }
 
+    public List<Stock> getGainers(int limit) { // viser "vinnerne"
+        return stockMap.values().stream()
+            .sorted((stock1, stock2) -> stock2.getLatestPriceChange().compareTo(stock1.getLatestPriceChange())) 
+            .limit(limit)
+            .toList();
+    }
 
-
+    public List<Stock> getLosers(int limit) { // viser "taperne"
+        return stockMap.values().stream()
+            .sorted((stock1, stock2) -> stock1.getLatestPriceChange().compareTo(stock2.getLatestPriceChange()))
+            .limit(limit)
+            .toList();
+    }
 }

src/main/java/Player.java → src/main/java/Model/Player.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public class Player {

src/main/java/Portfolio.java → src/main/java/Model/Portfolio.java

@@ -1,3 +1,5 @@
+package Model;
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -34,5 +36,14 @@ public List<Share> getShares(String symbol) {
     public boolean contains(Share share) {
         return shares.contains(share);
     }
+
+    public BigDecimal getNetWorth() {
+        BigDecimal total = BigDecimal.ZERO;
+        for (Share share : shares) {
+            SaleCalculator calc = new SaleCalculator(share);
+            total = total.add(calc.calculateTotal());
+        }
+        return total;
+    }
 
 }

src/main/java/Purchase.java → src/main/java/Model/Purchase.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public class Purchase extends Transaction {

src/main/java/PurchaseCalculator.java → src/main/java/Model/PurchaseCalculator.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public class PurchaseCalculator implements TransactionCalculator {

src/main/java/Sale.java → src/main/java/Model/Sale.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public class Sale extends Transaction {

src/main/java/SaleCalculator.java → src/main/java/Model/SaleCalculator.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public class SaleCalculator implements TransactionCalculator{

src/main/java/Share.java → src/main/java/Model/Share.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public class Share {

src/main/java/Stock.java → src/main/java/Model/Stock.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
@@ -30,4 +31,28 @@ public BigDecimal getSalesPrice() {
     public void addNewSalesPrice(BigDecimal price) {
         prices.add(price);
     }
+
+    public List<BigDecimal> getHistoricalPrices() {
+        return new ArrayList<>(prices); // returnerer en kopi for å beskytte selve listen
+    }
+
+    public BigDecimal getHighestPrice() {
+        return prices.stream()
+            .reduce(prices.get(0), BigDecimal::max);
+    }
+
+    public BigDecimal getLowestPrice() {
+        return prices.stream()
+            .reduce(prices.get(0), BigDecimal::min);
+    }
+
+    public BigDecimal getLatestPriceChange() {
+        if (prices.size() < 2) {
+            return BigDecimal.ZERO;
+        }
+
+        BigDecimal latest = prices.get(prices.size() - 1);
+        BigDecimal previous = prices.get(prices.size() - 2);
+        return latest.subtract(previous);
+    }
 }

src/main/java/Transaction.java → src/main/java/Model/Transaction.java

@@ -1,3 +1,4 @@
+package Model;
 public abstract class Transaction {
     private Share share;
     private int week;

src/main/java/TransactionArchive.java → src/main/java/Model/TransactionArchive.java

@@ -1,3 +1,4 @@
+package Model;
 import java.util.ArrayList;
 import java.util.stream.Collectors;
 import java.util.List;

src/main/java/TransactionCalculator.java → src/main/java/Model/TransactionCalculator.java

@@ -1,3 +1,4 @@
+package Model;
 import java.math.BigDecimal;
 
 public interface TransactionCalculator {

src/main/java/aksjer.csv

@@ -0,0 +1,5 @@
+# Top 500 US Stocks by Market Cap
+# Ticker,Name,Price
+NVDA,Nvidia,191.27
+AAPL,Apple Inc.,276.43
+MSFT,Microsoft,404.68

src/test/java/ExchangeTest.java

@@ -1,5 +1,9 @@
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+
+import Model.Exchange;
+import Model.Stock;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 import java.math.BigDecimal;

src/test/java/PortfolioTest.java

@@ -1,6 +1,11 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 import org.junit.jupiter.api.Test;
+
+import Model.Portfolio;
+import Model.Share;
+import Model.Stock;
+
 import java.math.BigDecimal;
 
 public class PortfolioTest {

src/test/java/PurchaseTest.java

@@ -0,0 +1,42 @@
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.math.BigDecimal;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import Model.Player;
+import Model.Purchase;
+import Model.Share;
+import Model.Stock;
+
+public class PurchaseTest {
+    Stock stock;
+    Share share;
+    Purchase purchase;
+
+    @BeforeEach
+    void setUp() {
+        this.stock = new Stock("symbol", "company", new BigDecimal(100));
+        this.share = new Share(this.stock, new BigDecimal(20), new BigDecimal(50));
+        this.purchase = new Purchase(this.share, 18);
+    }
+
+    @Test
+    void commit_validPurchase_updatesPlayer() {
+
+        // Arrange
+        Player player = new Player("Jane", new BigDecimal(500000));
+        BigDecimal startingMoney = player.getMoney();
+
+        // Act
+        this.purchase.commit(player);
+
+        // Assert
+        assertEquals(1, startingMoney.subtract(player.getMoney()).signum());
+
+    }
+
+
+
+}

src/test/java/SaleTest.java

@@ -0,0 +1,62 @@
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import Model.Player;
+import Model.Sale;
+import Model.Share;
+import Model.Stock;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.math.BigDecimal;
+
+public class SaleTest {
+    Stock stock;
+    Share share;
+    Sale sale;
+
+    @BeforeEach
+    void setUp(){
+        this.stock = new Stock("symbol", "company", new BigDecimal(100));
+        this.share = new Share(this.stock, new BigDecimal(20), new BigDecimal(80));
+        this.sale = new Sale(this.share, 18);
+    } 
+
+    @Test
+    void commit_validSale_updatesPlayerState() {
+
+        // Arrange
+        Player player = new Player("Jane", new BigDecimal(500));
+        player.getPortfolio().addShare(this.share);
+
+        // Act
+        this.sale.commit(player);
+
+        // Assert
+        assertTrue(player.getTransactionArchive().getTransactions(this.sale.getWeek()).contains(this.sale));
+        assertFalse(player.getPortfolio().contains(this.share));
+        assertTrue(this.sale.isCommitted());
+    }
+
+    @Test
+    void commit_alreadyCommitted_noAction() {
+
+        // Arrange
+        Player player = new Player("Jane", new BigDecimal(500));
+        player.getPortfolio().addShare(this.share);
+        this.sale.commit(player); 
+        BigDecimal moneyAfterFirstCommit = player.getMoney();
+
+        // Act
+        this.sale.commit(player);
+
+        // Assert
+        assertEquals(moneyAfterFirstCommit, player.getMoney());
+        assertEquals(1, player.getTransactionArchive().getTransactions(this.sale.getWeek()).size());
+        assertTrue(this.sale.isCommitted());
+    } 
+
+
+}

src/test/java/ShareTest.java

@@ -1,6 +1,10 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 import org.junit.jupiter.api.Test;
+
+import Model.Share;
+import Model.Stock;
+
 import java.math.BigDecimal;
 
 

src/test/java/StockTest.java

@@ -1,4 +1,7 @@
 import org.junit.jupiter.api.Test;
+
+import Model.Stock;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 import java.math.BigDecimal;