Merge pull request 'develop' (#1) from develop into main

Reviewed-on: #1

src/main/java/Main.java

@@ -14,6 +14,17 @@ public class Main {
             throw new IOException("products.csv not found");
         }
         Scanner scanner = new Scanner(input);
+        while (scanner.hasNextLine())
+        {
+            String ln = scanner.nextLine() ;
+            String[] part  = ln.split(",");
+            String product_id = part[0] ;
+            String product_name = part[1] ;
+            String product_price = part[2] ;
+
+            productCatalog.add(new Product(Integer.parseInt(product_id), product_name , Float.parseFloat(product_price))) ;
+
+        }
 
         // TODO:
         // - Read each line from products.csv
@@ -26,8 +37,7 @@ public class Main {
         // - The data in products.csv is guaranteed to be valid.
     }
 
-    public static void main(String[] args)
+    public static void main(String[] args) throws IOException {
-    {
         try {
             loadProducts();
         } catch (IOException e) {

src/main/java/ReportGenerator.java

@@ -1,22 +1,96 @@
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
 import java.util.List;
+import java.util.Scanner;
 
 public class ReportGenerator {
 
     private final String ordersFilePath;
     private final List<Product> productList;
 
-    private double totalFinalCost;
+    private double totalFinalCost = 0;
-    private int totalQuantity;
+    private int totalQuantity = 0 ;
-    private double totalDiscountValue;
+    private double totalDiscountValue = 0 ;
-    private int totalInvalidLines;
+    private int totalInvalidLines = 0 ;
 
     public ReportGenerator(String ordersFilePath, List<Product> productList) {
         this.ordersFilePath = ordersFilePath;
         this.productList = productList;
     }
+    public static boolean isNumber(String str) {
+        try {
+            Integer.parseInt(str);
+            return true;
+        } catch (NumberFormatException e) {
+            return false;
+        }
+    }
+
+    public void processFile() throws IOException {
+        InputStream input = getClass().getClassLoader().getResourceAsStream (ordersFilePath);
+        if (input == null) {
+            throw new IOException("not found");
+        }
+        Scanner scanner = new Scanner(input);
+        while (scanner.hasNextLine())
+        {
+            String ln = scanner.nextLine() ;
+            String[] part = ln.split(",") ;
+            String product_id = part[0] ;
+            String product_number = part[1] ;
+            String product_discount = part[2] ;
+
+
+
+                if (isNumber(product_id) && isNumber(product_number ) && isNumber(product_discount))
+                {
+                    int id = Integer.parseInt(product_id) ;
+                    int number = Integer.parseInt(product_number) ;
+                    int discount = Integer.parseInt(product_discount) ;
+
+                    if (id < 1 || id > 9 )
+                    {
+                        totalInvalidLines ++ ;
+                        continue;
+
+                    }
+                    if (number < 1)
+                    {
+                        totalInvalidLines ++ ;
+                        continue;
+                    }
+                    if (discount >= 100 || discount < 0 )
+                    {
+                        totalInvalidLines ++ ;
+                        continue;
+                    }
+                    for (Product p : productList)
+                    {
+                        if (p.getProductID() == id)
+                        {
+                            totalFinalCost = totalFinalCost + ((p.getPrice()*(100-discount)/100)*number) ;
+                            totalDiscountValue = totalDiscountValue + ((p.getPrice()*discount/100)*number);
+                        }
+
+                    }
+                    totalQuantity ++ ;
+
+
+
+                }
+                else {
+
+                    totalInvalidLines ++ ;
+                    continue;
+                }
+
+
+
+
+        }
 
-    public void processFile()
-    {
         // TODO:
         // 1. Open the order details CSV file
         // 2. Read the file line by line
@@ -57,8 +131,24 @@ public class ReportGenerator {
         // 12. Close all file resources
     }
 
-    public void saveReport()
+    public void saveReport() throws IOException {
-    {
+        BufferedWriter writer = new BufferedWriter(new FileWriter("report.txt")) ;
+        writer.write("========= SALES REPORT =========");
+        writer.newLine();
+        writer.write("Total Quantity Sold:" + totalQuantity);
+        writer.newLine();
+        writer.write("Total Final Cost: $" + totalFinalCost);
+        writer.newLine();
+        writer.write("Total Discount Value: $" + totalDiscountValue);
+        writer.newLine();
+        writer.write("Invalid Rows: " + totalInvalidLines);
+        writer.newLine();
+        writer.write("================================");
+        writer.newLine();
+        writer.close();
+
+
+
         // TODO:
         // 1. Build a formatted report string
         // 2. Include:
@@ -80,4 +170,5 @@ public class ReportGenerator {
         ================================
         */
     }
-}
+}
+