/sda-2-online-javascript-typescript-banking-app-

Primary LanguageTypeScript

JavaScript Banking Application - OOP Practice

This project aims to build JavaScript classes for a banking application to practice Object-Oriented Programming (OOP) concepts.

Level 1: Basic Requirements

Implement the following classes:

Bank Class:

Properties:

  • name (string)
  • branches (Branch[])

Constructor:

  • Parameters: name (string)

Methods:

  • addBranch(branch: Branch): boolean Description: Adds the branch to the branches array. Each branch should only be added once.

  • addCustomer(branch: Branch, customer: Customer): boolean Description: Adds the customer to the branch of the bank. Each customer can only be added once to a branch.

  • addCustomerTransaction(branch: Branch, customerId: string, amount: number): boolean Description: Adds a transaction of the amount for the customer with the specified customerId in the given branch.

  • findBranchByName(branchName: string): Branch[] | null Description: Returns a list of matched branches with the specified branchName or null if no matches were found.

  • checkBranch(branch: Branch): boolean Description: Returns true if the branch belongs to the bank or false otherwise.

  • listCustomers(branch: Branch, includeTransactions: boolean): void Description: Prints out a list of customers with their transaction details if includeTransactions is true.

Branch Class:

Properties:

  • name (string)
  • customers (array of Customer[])

Constructor:

  • Parameters: name (string)

Methods:

  • getName(): string

  • getCustomers(): Customer[]

  • addCustomer(customer: Customer): boolean Description: Adds the customer to the customers array. Each customer should only be added once.

  • addCustomerTransaction(customerId: string, amount: number): boolean Description: Adds a transaction of the amount for the customer with the specified customerId.

Customer Class:

Properties:

  • name (string)
  • id (number)
  • transactions (array of Transaction[])

Constructor:

  • Parameters: name, id

Methods:

  • getName(): string

  • getId(): number

  • getTransactions(): Transaction[]

  • getBalance(): number Note: The balance cannot be negative.

  • addTransactions(amount: number): boolean Description: Adds a successful transaction of the amount to the transactions array.

Transaction Class:

Properties:

  • amount (number)
  • date (Date)

Constructor:

  • Parameters: amount, date

Level 2: Additional Requirements

In addition to the basic requirements, enhance the application with the following features:

  • Add validation checks to ensure that the data meets certain criteria before performing create or update operations. For example, validate required fields and data format.

Running the JavaScript Code

Please run the following JavaScript code in bank.js and share your results and findings in the Slack channel

const arizonaBank = new Bank("Arizona")
const westBranch = new Branch("West Branch")
const sunBranch = new Branch("Sun Branch")
const customer1 = new Customer("John", 1)
const customer2 = new Customer("Anna", 2)
const customer3 = new Customer("John", 3)

arizonaBank.addBranch(westBranch)
arizonaBank.addBranch(sunBranch)
arizonaBank.addBranch(westBranch) 

arizonaBank.findBranchByName("bank")
arizonaBank.findBranchByName("sun")

arizonaBank.addCustomer(westBranch, customer1)
arizonaBank.addCustomer(westBranch, customer3)
arizonaBank.addCustomer(sunBranch, customer1)
arizonaBank.addCustomer(sunBranch, customer2)

arizonaBank.addCustomerTransaction(westBranch, customer1.getId, 3000)
arizonaBank.addCustomerTransaction(westBranch, customer1.getId, 2000)
arizonaBank.addCustomerTransaction(westBranch, customer2.getId, 3000)

customer1.addTransactions(-1000)
console.log(customer1.getBalance())
console.log(arizonaBank.listCustomers(westBranch, true))
console.log(arizonaBank.listCustomers(sunBranch,true))

You can add more codes to check the functionality and secrity of your banking system

Level 3: Bonus Requirements (Optional)

  • Add search functionality to allow users to search for specific customers based on keywords or specific fields, such as by name or Id
  • Peer review:
  • Review the code and implementation of 2 assignments from other participants.
  • Provide constructive feedback and suggestions for improvement. Please note that the bonus requirements and reviews are optional and can be completed if you have additional time and advanced skills.

TypeScript Banking Application

This is the Typescript assignment for the Typescript lecture. Your task is to convert the existing project to TypeScript and add appropriate type annotations to enhance type safety and maintainability.

Guidelines

To complete this assignment, follow the guidelines below:

  1. Set up TypeScript:

    • Install TypeScript globally on your system if you haven't done so already.
    • Create a new TypeScript configuration file (tsconfig.json) in the root folder of your project.

  2. Convert JavaScript files to TypeScript:

    • Rename .js files to .ts extension. Please rename and update one by one.
    • Define the type or interface for variables and declare the return types of the methods.
    • Ensure that the converted TypeScript code compiles successfully without any type errors.

  3. Running the TypeScript Code: Please run the code in bank.ts and share your results and findings in the Slack channel.

Notes

  • Ensure to apply proper type annotations for variables, function parameters, and return types to enhance type safety.
  • Leverage interfaces and custom types wherever appropriate to improve code maintainability and reusability.

Happy coding!

Deadline: 3th March 2024