This pull request introduces a new smart contract named PayAsYouGo. The contract enables pay-as-you-go billing for services, primarily focusing on:
Core Functionality:
Contract Creation: The contract owner can create new agreements for clients, specifying a unique ID, client identifier, and usage rate.
Bill Management: The owner can add bills to client agreements based on reported usage (e.g., API calls, data consumption) and the agreed-upon rate. Each bill is recorded with an amount and timestamp.
Payment Processing: Clients can pay their outstanding bills using the payBill function. Payments are transferred directly to the contract owner's specified address.
Data Retrieval: The contract provides functions (getContractById, getContracts) to fetch details of specific agreements or all agreements.
Key Improvements:
Events: Events are emitted for contract actions (e.g., contract creation, bill addition, payment) to facilitate off-chain data logging and provide transparency to users.
Input Validation: The contract includes checks to ensure that input values are within expected ranges and that users are not attempting to overpay bills.
Error Handling:require statements are used to revert transactions if conditions are not met, providing clear error messages.
Security Considerations: The contract owner's address can be changed if needed, and only the owner can create new contracts or add bills, adding a layer of access control.
This pull request introduces a new smart contract named
PayAsYouGo. The contract enables pay-as-you-go billing for services, primarily focusing on:Core Functionality:
payBillfunction. Payments are transferred directly to the contract owner's specified address.getContractById,getContracts) to fetch details of specific agreements or all agreements.Key Improvements:
requirestatements are used to revert transactions if conditions are not met, providing clear error messages.