📜Contracts

Explanation of the Implemented Contract

In this section, we'll dive into the BusinessPlans contract, responsible for managing business registration, subscription plans, and enabling businesses to manage their offerings securely on the Ethereum blockchain. The contract allows businesses to register, add plans, and manage their subscription offerings, while customers can view and subscribe to them.

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Contract Overview 📝

The BusinessPlans contract handles:

• Business Registration: Businesses register their information to create plans.

• Plan Management: Businesses add and manage subscription plans.

• Data Privacy: Plans are stored privately for each business, but users can view all available plans.

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Key Features & Functions 🔑

• Business Registration 🏢:

  • Businesses provide their name, email, phone, and registration number to register.

  • The contract ensures businesses cannot register more than once.

  function registerBusiness(
      string memory _name,
      string memory _email,
      string memory _phone,
      string memory _registrationNumber
  ) public

• Plan Creation 💡:

  • Businesses create new subscription plans with title, description, price (in wei), and duration.

  • Only registered businesses can add plans.

  function addPlan(
      string memory _title,
      string memory _description,
      uint _price,
      uint _duration
  ) public

• Fetch All Plans 🌍:

  • Fetch all available plans from registered businesses, providing a global view of the offerings.

  function getAllPlans() public view returns (Plan[] memory)

• Fetch Plans for Specific Business 🏠:

  • Retrieve all plans for a specific business by providing its address.

  function getPlansForBusiness(address _business) public view returns (Plan[] memory)

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Data Structures 🔧

• Business: Stores business details.

  struct Business {
      string name;
      string email;
      string phone;
      string registrationNumber;
  }

• Plan: Stores subscription plan details like title, description, price, duration, and isActive status.

  struct Plan {
      string title;
      string description;
      uint price;
      uint duration;
      bool isActive;
  }

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Mappings and Storage 🗄️

• Businesses: A mapping from an address to a Business struct.

  solidityCopy codemapping(address => Business) public businesses;

• Plans: A mapping from an address to an array of Plan structs.

  solidityCopy codemapping(address => Plan[]) public plans;

• Business Addresses: An array holding Ethereum addresses of all registered businesses.

  solidityCopy codeaddress[] public businessAddresses;

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Security Considerations 🔐

• Business Registration Check: Ensures a business can only register once.

• Plan Access Control: Only registered businesses can add or manage plans.

• Data Integrity: All data on the blockchain is immutable, ensuring transparency and security.

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Conclusion 🚀

The BusinessPlans contract enables decentralized management of subscription-based businesses, providing secure, tamper-proof data on the blockchain. It allows businesses to register, manage their subscription plans, and interact with customers transparently, enhancing trust and efficiency in the platform.