/**
* Main driving method behind this entire program. Contains a simple UI so the user can interact
* with the AuctionTable.
*
* @param args standard input arguments
*/
public static void main(String[] args) {
boolean finished = false;
Scanner sc = new Scanner(System.in);
String input, parsedInput[];
AuctionTable myTable = null;
String username;
// Code to read the auctiontable
File data = new File("data");
// Dir to hold auctions is called "data"
// If it does not exist, create it
if (data.exists() && data.isDirectory())
System.out.println("Data directory detected, continuing...");
else if (!data.mkdir())
System.out.println("These was a problem with creating the data directory");
else {
System.out.println(
"Data directory missing! Generating new Data Directory...\nData directory successfully generated...");
}
// If it is empty, automatically create a new auctiontable
if (data.list().length == 0) {
myTable = new AuctionTable();
System.out.println("No saved data detected: generating new auction table...");
} else // If it is not, ask user if they want to load a new table
{
System.out.print("Saved auctions detected. Load from file? (y/n): ");
String answer = sc.nextLine().toUpperCase();
if (answer.equals("Y") || answer.equals("YES")) {
for (String file : data.list()) System.out.print("\"" + file + "\"" + " ");
System.out.print("\nAuction to load (do not include .obj):");
String auctionToRead = "data/" + sc.nextLine() + ".obj";
try {
ObjectInputStream fileIn = new ObjectInputStream(new FileInputStream(auctionToRead));
myTable = (AuctionTable) fileIn.readObject();
fileIn.close();
} catch (FileNotFoundException e) {
System.out.println(auctionToRead + " was not found.\nAborting program, try again!");
sc.close();
return;
} catch (Exception e) {
System.out.println(e.getMessage() + ": Something went wrong");
}
} else {
System.out.println("New auction table generated.");
myTable = new AuctionTable();
}
}
// Proceed as normal
System.out.print("\nLOGIN - Enter your username: "******"\n(D) - Import Data from URL (WARNING: This will overwrite the current auction table\n"
+ "(A) - Create a New Auction\n"
+ "(B) - Bid on an Item\n"
+ "(I) - Get Info on Auction\n"
+ "(P) - Print All Auctions\n"
+ "(R) - Remove Expired Auctions\n"
+ "(T) - Let Time Pass\n"
+ "(Q) - Quit");
while (!finished) {
System.out.print("> ");
input = sc.nextLine().toUpperCase();
parsedInput = input.split(" ");
if (parsedInput[0].equals("Q") || parsedInput[0].equals("EXIT")) {
System.out.println("Exiting..");
finished = true;
} else if (parsedInput[0].equals("D")) {
System.out.print("URL: ");
try {
myTable = AuctionTable.buildFromUrl(sc.nextLine());
} catch (IllegalArgumentException e) {
System.out.println(e.getMessage());
}
} else if (parsedInput[0].equals("A")) {
// Code to add a function
String newID = "", itemInfo;
int timeRemaining;
System.out.println("Creating a new Auction as " + username);
try {
System.out.print("Please enter an Auction ID: ");
newID = sc.nextLine();
System.out.print("Please enter an Auction time (hours): ");
timeRemaining = Integer.parseInt(sc.nextLine());
System.out.print("Please enter some Item Info: ");
itemInfo = sc.nextLine();
myTable.putAuction(newID, new Auction(newID, username, itemInfo, timeRemaining));
} catch (NumberFormatException e) {
System.out.println("Invalid input. Try again");
}
System.out.println("Auction " + newID + " added to table.");
} else if (parsedInput[0].equals("B")) {
// Code to bid on an auction
System.out.print("Enter an auction ID to bid on: ");
try {
String auctionID = sc.nextLine();
Auction toBidOn = myTable.getAuction(auctionID);
if (toBidOn == null)
throw new IllegalArgumentException("Auction " + auctionID + " not found.");
// Checks if the auction is closed
if (toBidOn.getTimeRemaining() > 0) {
System.out.print(
"Auction "
+ toBidOn.getAuctionID()
+ " is OPEN."
+ "\nCurrent Bid: $ "
+ toBidOn.getCurrentBid()
+ "\n"
+ "What would you like to bid?: $");
double bidAmt = Double.parseDouble(sc.nextLine());
toBidOn.newBid(username, bidAmt);
System.out.println("Bid accepted.");
} else {
System.out.println(
"Auction "
+ toBidOn.getAuctionID()
+ " is CLOSED."
+ "\nCurrent Bid: $ "
+ toBidOn.getCurrentBid()
+ "\n"
+ "You can no longer bid on this item.");
}
} catch (NumberFormatException e) {
System.out.println("Input not valid. Try again");
} catch (IllegalArgumentException e) {
System.out.println(e.getMessage());
}
// Technically this exception will never be thrown since it's already checked for
catch (ClosedAuctionException e) {
}
} else if (parsedInput[0].equals("I")) {
// Code to get information on a specific auction
System.out.print("Enter an auction ID: ");
try {
myTable.printAuctionInfo(sc.nextLine());
} catch (IllegalArgumentException e) {
System.out.println(e.getMessage());
}
} else if (parsedInput[0].equals("P")) {
// Prints a neatly formatted table of auctions
myTable.printTable();
} else if (parsedInput[0].equals("R")) {
// Removes all closed auctions from this table
System.out.println("Removing closed auctions...");
myTable.removeClosedAuctions();
System.out.println("Done.");
} else if (parsedInput[0].equals("T")) {
// Passes a certain number of hours over each auction
System.out.print("How many hours to pass?\nHours:");
int hours = 0;
try {
hours = Integer.parseInt(sc.nextLine());
} catch (NumberFormatException e) {
System.out.println("Invalid input. Try again");
}
myTable.letTimePass(hours);
} else {
// Otherwise, the input was wrong
System.out.println("Command not recognized. Try again");
}
}
// Code to save the auctiontable
// save the auction as this name under "data"
// Otherwise terminate the program
// Prompts to save the auction table (y/n)
System.out.print("Save the current auction table to file? (y/n): ");
String answer = sc.nextLine().toUpperCase();
if (answer.equals("Y") || answer.equals("YES")) {
// If yes, prompt for a name
System.out.print("Name to save as (do not include .obj): ");
String fileName = "data/" + sc.nextLine() + ".obj";
try {
ObjectOutputStream fileOut = new ObjectOutputStream(new FileOutputStream(fileName));
fileOut.writeObject(myTable);
fileOut.close();
System.out.println("Table saved. Goodbye!");
} catch (Exception e) {
System.out.println(e.getMessage() + " : something went wrong");
}
} else {
System.out.print("Table not saved. Goodbye!");
}
sc.close();
}
