Smart Contract Project with Solidity by Alessandro Ponton

Fashion Domain

Testnet Deployment: https://sepolia.etherscan.io/address/0xe2704aa2c89602ce3bb011aaccd0f6a2d08e6ce4

This Solidity smart contract manages an e-commerce system for selling clothing using Ethereum. The contract allows adding products, tracking sales, and handling purchases in Ether. It is divided into two subcontracts: ProductManager and FashionCommerceManager, with the latter inheriting functionalities from the former.

Contract Structure

1. ProductManager Contract

The ProductManager contract serves as the foundation for managing products and sales.

Structs:

• Product: Stores product information, including ID, name, quantity, and price in Ether.
• Sale: Contains the ID of the sold product, the buyer's address, and the timestamp of the sale.

Functions:

• getProductsPurchasedBy: Returns a list of products purchased by a specific customer.
• calculateSalesAmount: Calculates the total sales amount within a specified time range.

2. FashionCommerceManager Contract

The FashionCommerceManager contract extends ProductManager and adds functionalities for managing the e-commerce process.

State Variables:

• owner: The address of the contract owner.
• products: An array storing all available products.
• sales: An array storing all completed sales.
• totalSales: A counter for the total number of recorded sales.

Events:

• SaleRecorded: Emits an event whenever a new sale is added to the sales array. Includes the sale ID, product ID, buyer's address, and timestamp.

Modifiers:

• onlyOwner: Restricts access to certain functions to the contract owner.

Functions:

• addProduct: Allows the owner to add a new product to the catalog, specifying name, quantity, and price in Ether.
• getProduct: Retrieves product details based on its ID.
• purchaseProduct: Allows customers to purchase a product by sending Ether. The function verifies product availability and sufficient funds before recording the sale. After the sale, the product catalog is updated.
• withdraw: Allows the owner to withdraw the Ether balance from the contract.
• getSale: Retrieves information about a specific sale based on its ID.

How It Works

1. Adding Products: The owner can add new products by specifying their name, quantity, and price in Ether. Each product is assigned a unique ID.
2. Purchasing Products: Customers can purchase products by calling the purchaseProduct function and sending the required amount of Ether. The product's quantity is reduced, and the sale is recorded in the sales array.
3. Tracking Sales: The contract tracks all sales and emits the SaleRecorded event for each transaction.
4. Withdrawing Funds: The contract owner can withdraw the collected Ether balance using the withdraw function.

Security Considerations

• The contract uses require statements to validate conditions, such as checking product availability and sufficient funds.

Deployment

To deploy this contract, you will need:

• Solidity Compiler: Version 0.8.18 or compatible.
• Ethereum Wallet: To deploy and interact with the contract on a testnet or mainnet.

License

MIT License.