Parking Lot Problem

Problem statement

• Registration numbers of all cars of a particular colour
• Slot number in which a car with a given registration number is parked.
• Slot numbers of all slots where a car of a particular colour is parked.

Running this app

This is a command line application and can be run in two ways:

• Using commands from the interactive prompt
• Using the commands from the file

Installing all the dependencies

1. npm install

Running the app using the commands from the Interactive prompt

1. npm start

Running the app using the commands from the file

1. npm start filename

List of User Commands

Users can interact with the Parking Lot system via a following simple set of commands which produce a specific output:

• create_parking_lot: create_parking_lot 6 will create a parking lot with 6 slots.

• park < car Number > < Car Color >: park KA-01-HH-1234 White will allocate the nearest slot from entry gate.

• leave: leave 4 will make slot number 4 free.

• status: status will display cars and their slot details

Slot No.  Registration No Color
1         KA-01-HH-1234  White
2         KA-01-HH-9999  Red
3         KA-01-BB-0001  White
5         KA-01-HH-2701  Black
6         KA-01-HH-3141  Black

• registration_numbers_for_cars_with_colour < COLOR >: registration_numbers_for_cars_with_colour White will display the registration number of the cars of white color e.g. KA-01-HH-1234, KA-01-BB-0001

• slot_numbers_for_cars_with_colour < COLOR >: slot_numbers_for_cars_with_colour White will display slot numbers of the cars of white color e.g. 1, 3

• slot_number_for_registration_number < REGISTRATION NUMBER >: slot_number_for_registration_number MH-04-AY-1111 will display the slot number for the car with registration number MH-04-AY-1111.

• leave_car_by_registration_number: leave_car_by_registration_number JH-01-LT-0008 will free the slot occupied by car with registration number JH-01-LT-0008.

• exit: quit will quit the application and return to the console.

NOTE: Any commands which are not mentioned above will throw an error: invalid command

Things that I have to Work on

• Implementing the postgres database for the app
• using the orm to use the database
• changing the loops to iterables
• sanitizing the car input data and maintaining the list possible colors just to to be safe about the colors that are added by the users