Implement open file fucntionality

src/main/java/ReportGenerator.java

@@ -1,4 +1,8 @@
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.PrintWriter;
 import java.util.List;
+import java.util.Scanner;
 
 public class ReportGenerator {
 
@@ -17,6 +21,30 @@ public class ReportGenerator {
 
     public void processFile()
     {
+        try {
+            Scanner scanner = new Scanner(new File("products.csv"));
+            while (scanner.hasNextLine()) {
+                String line = scanner.nextLine();
+                String[] parts = line.split(",");
+                int productID = Integer.parseInt(parts[0]);
+                String productName = parts[1];
+                double price = Double.parseDouble(parts[2]);
+                Product product = new Product(productID, productName, price);
+                productList.add(product);
+            }
+        } catch (FileNotFoundException e) {
+            System.out.println("File not found.");
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        }
+
+        try {
+            File source = new File(ordersFilePath);
+            Scanner scanner = new Scanner(source);
+            
+        } catch (FileNotFoundException e) {
+        System.out.println("File not found.");
+    }
         // TODO:
         // 1. Open the order details CSV file
         // 2. Read the file line by line
@@ -59,6 +87,21 @@ public class ReportGenerator {
 
     public void saveReport()
     {
+        try {
+            File file = new File("report.txt");
+            PrintWriter printWriter = new PrintWriter(file);
+            printWriter.write("========= SALES REPORT =========\n");
+            printWriter.write("Total Quantity Sold: "+ totalQuantity + "\n");
+            printWriter.write("Total Final Cost: "+ totalFinalCost + "\n");
+            printWriter.write("Total Discount Value: "+ totalDiscountValue + "\n");
+            printWriter.write("================================");
+            printWriter.close();
+        } catch (FileNotFoundException e) {
+            System.out.println("File not found.");
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        }
+
         // TODO:
         // 1. Build a formatted report string
         // 2. Include: