APP FOR VACATION HOUSE EXCHANGE Assume that you are involved in a start-up who came up with an idea to make an app for people to exchange their houses on vacation. The app will allow registered members to use houses of other members when they go on vacation.

There is an initial entry fee of $500 (pay to the system) when registering as a member, which earns the new member 500 credit points. Initial registrations must capture all the information necessary to be a member, including his/her personal info (username, full name, phone number), and the info of his/her house if available (location, description). Each member earns credit points when the house is used by another member (e.g. who travels to other cities) and vice versa, can use credit points to occupy an available house.

The system will track two separate score ratings which can vary from -10 to +10

- The house-rating score will reflect the utility level derived based on average of ratings of the occupiers who have used the house in the past.

- The occupier-rating score is derived by averaging the ratings of all house owners who had let their houses to be used by that occupier (how well that occupier has taken care of the house).

Any member can list his or her house to be used in a particular period (start end), consuming points (per day), and with or without specifying minimum required occupier rating for potential occupants. The minimum occupier rating can thus be used to prevent the house being rented to poor occupants or those for which no history is available. Of course, the member can unlist the house if needed. Any member can view all available houses in a specified time (start end), and city. The showed list should consist of only those houses for which the member has adequate credit points and occupier rating.

The information should also include the house rating score of the house. Members should also be given the option to view the reviews (score and comments) on any of the listed houses. Any member can request to occupy any property for which they are eligible. The house owner can view all requests for his/her house, including info and rating of the interested occupiers, and may choose to a request to accept (reject all other requests with overlapped time). Non-members can view all house details (but not their reviews and availability), to encourage non-members to join.

CONSTRAINTS:

1. Each member can only add one house to his/her account.

2. Each member can only occupy one house at a time.

3. Members are not allowed to cancel if the request is already accepted.

4. The application is only available to users in those cities: Ha Noi, Hue, Sai Gon.

Basic feature

1. A non-member can register to become a member (information is recorded). 2. A non-member can view all house details (but not their reviews and availability). 3. A member can login with the registered username and password, and can view all of his/her information. 4. An admin can login with predefined username and password, and can view information of all members and houses. 5. A member can list his/her house available to be occupied (with consuming points, and minimum required occupier rating), and unlist it if wanted. 6. A member can search for all available suitable houses for a particular city (suitable with his current credit points and rating score). Example: My credit is 100, score = 7 There is a house with consuming point: 150/day, minimum required score is 6. => This house wont be available in my search (since I do not have enough credit for it). 7. A member can request to occupy a house. 8. A member can view all requests to his listed house. 9. A member can accept a request (reject all other requests). 10. A member can occupy the successfully requested house.

11.A member can rate each of his/her occupied houses (score and comment). 12. A member (house owner) can rate each of the occupiers who had used his/her house (score and comment). 13. All data must be saved into a file before the program is ended, and loaded into the program when it is started.