You've been asked to develop an application for the newest vending machine distributor, Umbrella Corp. They've released a new vending machine, Vendo-Matic 800, that is integrated with everyone's bank accounts, allowing customers to purchase products from their computers for their convenience.
- The vending machine dispenses beverages, candy, chips, and gum.
- Each vending machine item has a Name and a Price.
- A main menu must display when the software runs, presenting the following options:
(1) Display Vending Machine Items (2) Purchase (3) Exit - The vending machine inventory is stocked via an input file when the vending machine starts.
- The vending machine is automatically restocked each time the application runs.
- When the customer selects "(1) Display Vending Machine Items", they're presented
with a list of all items in the vending machine with its quantity remaining:
- Each vending machine product has a slot identifier and a purchase price.
- Each slot in the vending machine has enough room for 5 of that product.
- Every product is initially stocked to the maximum amount.
- A product that has run out must indicate that it is SOLD OUT.
- When the customer selects "(2) Purchase", they are guided through the purchasing
process menu:
(1) Feed Money (2) Select Product (3) Finish Transaction Current Money Provided: $2.00 - The purchase process flow is as follows:
- Selecting "(1) Feed Money" allows the customer to repeatedly feed money into the
machine in valid, whole dollar amounts—for example, $1, $2, $5, or $10.
- The "Current Money Provided" indicates how much money the customer has fed into the machine.
- Selecting "(2) Select Product" allows the customer to select a product to
purchase.
- Show the list of products available and allow the customer to enter a code to select an item.
- If the product code does not exist, the customer is informed and returned to the Purchase menu.
- If a product is sold out, the customer is informed and returned to the Purchase menu.
- If a valid product is selected, it is dispensed to the customer.
- Dispensing an item prints the item name, cost, and the money
remaining. Dispensing also returns a message:
- All chip items print "Crunch Crunch, Yum!"
- All candy items print "Munch Munch, Yum!"
- All drink items print "Glug Glug, Yum!"
- All gum items print "Chew Chew, Yum!"
- After the product is dispensed, the machine must update its balance accordingly and return the customer to the Purchase menu.
- Selecting "(3) Finish Transaction" allows the customer to complete the
transaction and receive any remaining change.
- The customer's money is returned using nickels, dimes, and quarters (using the smallest amount of coins possible).
- The machine's current balance must be updated to $0 remaining.
- After completing their purchase, the user is returned to the "Main" menu to continue using the vending machine.
- Selecting "(1) Feed Money" allows the customer to repeatedly feed money into the
machine in valid, whole dollar amounts—for example, $1, $2, $5, or $10.
- All purchases must be audited to prevent theft from the vending machine:
- Each purchase must generate a line in a file called
Log.txt. - The audit entry must be in the format:
01/01/2016 12:00:00 PM FEED MONEY: $5.00 $5.00>01/01/2016 12:00:15 PM FEED MONEY: $5.00 $10.00 >01/01/2016 12:00:20 PM Crunchie B4 $10.00 $8.50 >01/01/2016 12:01:25 PM Cowtales B2 $8.50 $7.50 >01/01/2016 12:01:35 PM GIVE CHANGE: $7.50 $0.00 >```
- Each purchase must generate a line in a file called
- Create as many of your classes as possible to be "testable" classes. Limit console input and output to as few classes as possible.
- Optional - Sales Report
- Provide a "Hidden" menu option on the main menu ("4") that writes to a sales report that shows the total sales since the machine was started. The name of the file must include the date and time so each sales report is uniquely named.
- An example of the output format is provided below.
- Provide unit tests demonstrating that your code works correctly.
The input file that stocks the vending machine products is a pipe | delimited file. Each line is a separate product in the file and follows the below format:
| Column Name | Description |
|---|---|
| Slot Location | The slot location in the vending machine where the product is set. |
| Product Name | The display name of the vending machine product. |
| Price | The purchase price for the product. |
| Type | The product type for this row. |
For example:
A1|Potato Crisps|3.05|Chip
B1|Moonpie|1.80|Candy
B2|Cowtales|1.50|Candy
C1|Cola|1.25|Drink
An input file has been provided with your repository: vendingmachine.csv.
The output sales report file is also pipe-delimited for consistency. Each line is a separate product with the number of sales for the applicable product. At the end of the report is a blank line followed by the TOTAL SALES dollar amount indicating the gross sales from the vending machine.
Example Output
Potato Crisps|10 Stackers|3 Grain Waves|0 Cloud Popcorn|50 Moonpie|23 Cowtales|2 Wonka Bar|1 Crunchie|3 Skor|4 Cola|8 Dr. Salt|9 Mountain Melter|12 Heavy|11 Diet Cola|6 U-Chews|4 Little League Chew|2 Chiclets|0 Triplemint|0