Auction site (Allegro inspired)¶

Brief description of the system¶

As part of the project, a system should be created that allows for the listing and bidding of items. Additionally, the system is to enable the creation of accounts for users and the evaluation of transactions.

Main system functions¶

Home
Categories
User's account
Auctions
Auction search
Auctions and purchases
Transaction Ratings
Auction observation

Technologies¶

Spring + Hibernate
(optional) Frontend in Angular/React/Thymeleaf

Basic entities (Proposal)¶

Category¶

name
descriptive name
logotype/thumbnail (optional)

User's account¶

login (email used for communication and notifications)
password
account name (presented on the account profile)
province
city
address (street, house number, zip code)
date of account creation
account status (ACTIVE/INACTIVE/LOCKED)
logotype / thumbnail/avatar
type (NORMAL/PREMIUM)

Auction¶

title
description
photos (optional)
category
minimum amount
"buy it now" amount (it disappears if bidding starts)
promoted (it can be assumed that a premium account can promote e.g. 10 auctions a month)
location (corresponds to the location of the user's account)
date of issue
end date
number of visits (auction page views)

Bidding¶

auction
user
amount

Purchase (entity corresponding to the highest bidding or Buy Now)¶

auction
user
amount

Auction observation¶

auction
user

Evaluation of the transaction (purchase)¶

purchase
seller rating
seller's comment
buyer's rating
buyer comment

Functionalities¶

Show your home page¶

presentation of categories (main categories - if their structure is tree-like): e.g. a list of links in the left or right column leading to an auction from a selected category
presentation of a list of recently added auctions (e.g. 10)
presentation of the list of auctions that are ending (e.g. 10)
presentation of the list of auctions of user that is logged in (issued)
presentation of the list of auctions that a logged in user is bidding on
presentation of the list of auctions that are watched
presentation of the list of auctions that "just ended" (e.g. 10)
(optional) additional auction lists, e.g. the most popular (most auctions or visits)

Selection of the auction category¶

list of categories in which the auctions are placed
(optional) the list can be a tree structure with epmpty values; the presentation and search for auctions must take this into account)
(optional) category administration (the basic version has predefined categories)

User account management¶

an account creation form
page (available after logging in) that allows you to edit your account details
there should be a list of auctions which were: watched, listed, auctioned (also lost) and completed (won and those that did not receive the minimum amount)
(optional) presentation of ratings and comments from the auction
(optional) adding an administrator role who can also block the account

Listing the auctions¶

a form that allows you to place an auction and define its parameters
the auction can be canceled (if there was no auction)

Auction search¶

page presenting auction search results
a page which leads to it, e.g. by category links from the home page
wherever the name of a category is presented, it should be clickable and lead to the page with the presentation of results
additionally, on the results page, you can limit/filter auctions (e.g. by province and city) and sort, e.g. by the date they were added, by the end date of the auction
the mechanism must take into account premium auctions and present them "first"
(optional) field for entering the auction number or account name: search by number (presents a specific auction), search for a user's auctions (presents a list of his auctions)

Auctions and purchases¶

logged in user can bid at the auction
can enter any amount
can immediately choose Buy Now
You can only bid on ongoing auctions
highest bid or buy now becomes Purchasable
if the minimum amount has not been reached, there is no winner
Attention! For the sake of simplicity, you need to write a mechanism that will be activated at each entry to the site and will "close" auctions that have ended (from the last visit to the site) and select the winners
(optional) with the help of the Trainer, you can try to use a Scheduler/Quartz/Cron

Transaction Ratings¶

both the seller and the buyer can leave a review and comment

Auction observation¶

logged in user can add an auction to the watchlist
after entering the observed auction, this fact should be marked, e.g. with an text label or a picture of a star

Project development¶

as it stands, the project is quite complex
the development of functionality is left to the student (both as an inspiration for existing websites and his/her own ideas)

Additional requirements¶

it is necessary to ensure an aesthetic and functional way of presenting data
data downloaded from users should be pre-validated