From 928a311fec9884281d2a9862223b9649af63d183 Mon Sep 17 00:00:00 2001 From: Matin-Ardestani Date: Mon, 1 Jun 2026 22:08:43 +0330 Subject: [PATCH] Complete code --- src/main/java/Main.java | 19 +++-- src/main/java/ReportGenerator.java | 124 ++++++++++++++++++++--------- 2 files changed, 97 insertions(+), 46 deletions(-) diff --git a/src/main/java/Main.java b/src/main/java/Main.java index 148a46e..73fa3ec 100644 --- a/src/main/java/Main.java +++ b/src/main/java/Main.java @@ -15,15 +15,18 @@ public class Main { } 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 + while(scanner.hasNextLine()){ + String[] parts = scanner.nextLine().split(","); - // NOTE - // - The data in products.csv is guaranteed to be valid. + int productID = Integer.parseInt(parts[0]); + String productName = parts[1]; + double productPrice = Double.parseDouble(parts[2]); + + Product product = new Product(productID, productName, productPrice); + productCatalog.add(product); + } + + scanner.close(); } public static void main(String[] args) diff --git a/src/main/java/ReportGenerator.java b/src/main/java/ReportGenerator.java index 8eb458b..991027d 100644 --- a/src/main/java/ReportGenerator.java +++ b/src/main/java/ReportGenerator.java @@ -1,4 +1,10 @@ +import java.io.FileWriter; +import java.io.IOException; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.rmi.ServerError; import java.util.List; +import java.util.Scanner; public class ReportGenerator { @@ -17,48 +23,90 @@ public class ReportGenerator { public void processFile() { - // TODO: - // 1. Open the order details CSV file - // 2. Read the file line by line - // 3. Split each line using comma delimiter - // (each line is guaranteed to contain exactly two commas) - // 4. Each line contains exactly 3 values in the format: - // [productId],[quantity],[discountPercent] - // 5. Attempt to convert values: - // - productId -> int - // - quantity -> int - // - discountPercent -> int - // NOTE: - // - quantity and discountPercent may contain invalid characters - // (e.g., letters instead of numbers). - // - If parsing any value fails (NumberFormatException), - // the entire line must be considered invalid. - // - Use try-catch blocks and exception handling to safely - // handle parsing and validation errors without stopping - // the processing of the remaining lines. - // 6. Validate parsed values: - // - productId must be greater than 0 - // - quantity must be greater than 0 - // - discountPercent must be between 0 and 99 inclusive - // 7. Look for a Product in productList that matches productId - // 8. If no Product with that ID exists in the catalog, - // the entire line is considered invalid - // 9. If all values are valid and the product exists, calculate: - // subtotal = quantity * product price - // discountValue = subtotal * discountPercent / 100 - // finalCost = subtotal - discountValue - // 10. Update report totals: - // - totalQuantity += quantity - // - totalFinalCost += finalCost - // - totalDiscountValue += discountValue - // 11. If any parsing error, validation failure, or missing product occurs: - // - increment totalInvalidLines - // - skip the line and continue processing the next line - // 12. Close all file resources + + Path path = Paths.get(ordersFilePath); + try { + Scanner scanner = new Scanner(path); + + while(scanner.hasNextLine()){ + String[] parts = scanner.nextLine().split(","); + int productID, quantity, discount; + + // product ID should be a valid integer + try{ + productID = Integer.parseInt(parts[0]); + if(productID <= 0){ + totalInvalidLines++; + continue; + } + } catch(NumberFormatException e){ + totalInvalidLines++; + continue; + } + + // quantity should be a valid integer and not less than 1 + try{ + quantity = Integer.parseInt(parts[1]); + if(quantity <= 0){ + totalInvalidLines++; + continue; + } + } catch(NumberFormatException e){ + totalInvalidLines++; + continue; + } + + // discount should be a valid integer and between 0 and 99 + try{ + discount = Integer.parseInt(parts[2]); + if(discount < 0 || discount > 99){ + totalInvalidLines++; + continue; + } + } catch(NumberFormatException e){ + totalInvalidLines++; + continue; + } + + try{ + Product product = productList.get(productID - 1); + + double subTotal = quantity * product.getPrice(); + double discountValue = subTotal * discount / 100; + double finalCost = subTotal - discountValue; + totalQuantity += quantity; + totalFinalCost += finalCost; + totalDiscountValue += discountValue; + } catch(IndexOutOfBoundsException e){ // product id should be in product list ids + totalDiscountValue++; + continue; + } + + } + + scanner.close(); + } + catch (IOException e){ + System.out.println("Cannot read order details file."); + } + } public void saveReport() { + try{ + FileWriter file = new FileWriter("report.txt"); + String output = "========= SALES REPORT =========\n" + + "Total Quantity Sold: " + totalQuantity + "\n" + + "Total Final Cost: $" + totalFinalCost + "\n" + + "Total Discount Value: " + totalDiscountValue + "\n" + + "Invalid Rows: " + totalInvalidLines + "\n" + + "================================"; + file.write(output); + file.close(); + } catch(IOException e){ + System.out.println(e.getMessage()); + } // TODO: // 1. Build a formatted report string // 2. Include: -- 2.54.0