develop

src/main/java/Main.java

@@ -4,43 +4,63 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Scanner;
 
-public class Main {
+public class Main
+{
     static ArrayList<Product> productCatalog = new ArrayList<>();
-    public static void loadProducts() throws IOException{
+
+    public static void loadProducts() throws IOException
+    {
         InputStream input = Main.class
                 .getClassLoader()
                 .getResourceAsStream("products.csv");
-        if (input == null) {
+
+        if (input == null)
+        {
             throw new IOException("products.csv not found");
         }
-        Scanner scanner = new Scanner(input);
 
-        // TODO:
-        // - Read each line from products.csv
-        // - For each line, parse productId, name, and price
-        // - The format of the file is like this:
-        //      [productId],[name],[price]
-        // - Store Product objects in the productCatalog ArrayList
+        try (Scanner scanner = new Scanner(input))
+        {
+            while (scanner.hasNextLine())
+            {
+                String line = scanner.nextLine();
 
-        // NOTE
-        // - The data in products.csv is guaranteed to be valid.
+                if (line.trim().isEmpty()) continue;
+
+                String[] parts = line.split(",");
+
+                if (parts.length >= 3)
+                {
+                    int productId = Integer.parseInt(parts[0].trim());
+                    String name = parts[1].trim();
+                    double price = Double.parseDouble(parts[2].trim());
+
+                    productCatalog.add(new Product(productId, name, price));
+                }
+            }
+        }
     }
 
     public static void main(String[] args)
     {
-        try {
+        try
+        {
             loadProducts();
-        } catch (IOException e) {
-            System.err.println("Error reading products");
+        } catch (IOException e)
+        {
+            System.err.println("Error reading products: " + e.getMessage());
             System.out.println("Terminating the program...");
             return;
         }
         System.out.println("=== Products loaded");
 
+
         ReportGenerator reportGenerator = new ReportGenerator("2025_order_details.csv", Collections.unmodifiableList(productCatalog));
         reportGenerator.processFile();
         System.out.println("=== Order file processed");
+
+
         reportGenerator.saveReport();
         System.out.println("=== Report saved as report.txt");
     }
-}
+}