PythonProject

Only the initial version was committed for now, I'll revise it later - 12.14/14:43

down the finnal version - 12.14/22:00

1. Basic Functions:

• deposit(amount): Perform deposit operations.
• withdraw(amount): Perform withdrawal operations.
• transfer(recipient_wallet, amount): Transfer funds to a specified user's wallet.
• view_transaction_history(): View the transaction history.
• update_personal_info(): Update the user's personal information (e.g., name, email, phone).
• loan_or_repay(): Apply for a loan or repay outstanding loan amounts.

2. Auxiliary Methods:

• _add_transaction(transaction_type, amount, recipient_id): Add a transaction record.
• _check_daily_limit(amount): Check if the daily transaction limit is exceeded.
• add_daily_interest(): Calculate daily interest at the specified rate.
• validate_input(input_type, value): Validate input formats (e.g., wallet ID, email, password).

3. Login and Registration Module:

• login_or_register(): Provide login and registration options.
  • During login, check if the wallet ID exists and if the password is correct.
  • During registration, validate the user's input format and generate a new wallet file.

4. User Interaction Menu:

• wallet_menu(wallet): The main menu for wallet functionalities, including the following operations:
  1. Deposit funds (deposit).
  2. Withdraw funds (withdraw).
  3. Transfer funds (transfer).
  4. Apply for or repay a loan (loan_or_repay).
  5. View or update personal information (update_personal_info).
  6. View transaction history (view_transaction_history).
  7. Exit the system.

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Summary of Features:

Data Storage:

• Stable and efficient storage of wallet data.
• All user data is saved in JSON files under the wallet_data folder.
• In-memory cache (_cache) improves read efficiency.

Transaction Features:

• Supports essential functions like deposits, withdrawals, and transfers.
• Includes daily transaction limits and single transaction amount caps.
• Have a daily compounding system

Loan System:

• Users can apply for loans based on their cumulative deposits.
• Supports partial or full loan repayment.

Security:

• Validates user input and enforces strict format requirements for passwords, emails, etc.
• Accounts are frozen if daily transaction limits are exceeded.

Flexible Personal Information Management:

• Users can update their name, email, and phone number at any time.