Block-commerce-contract NPM

About The Project

Provide you with a package secured by Blockchain and Smart Contract to build, manage and revise all aspects between bulding and developing software for Ethereum-based marketplace projects.

Built with

Setting Up

This section is all about relevant softwares, extensions and how to install this package.

Prerequisites

For using BlockCommerce, you need first to have metamask available in your browser.

Download metamask here (Choose the firefox to download it to your browser).
See how to use metamask here.

Installation

Use the package manager npm to install.

  npm install npm@latest -g

block-commerce-contract

  npm install block-commerce-contract

Features

Below are what BlockCommerce will provide for you:

Contract: A smart library contract consists of a contract that creates, stores the NFT and a contract that serves its role as a marketplace for selling and exchanging NFTs. These contracts can be reused, secured and stored on blockchain, and are written by Solidity. Besides, all the functions are authorized according to the account's role.
Upgradable contract: A set of contract and tool is used for creating and managing contracts, it allows for the separation of upgradeable contracts on Ethereum.
Lazy minting: Advanced feature, this helps the seller not to pay any fee from the time a product is created to the time it is sold. The fee in the end will be paid by the end user.
Authorization: Advanced feature, this helps both the seller and buyer can controll the contract by themselves and execute it as they wished, instead of the inherent automatic execution of the contract.

Example

These are some code snippets to help you have a better understand what block-commerce-contract can do.

Generate a NFT with the recipient's address _to be obtained from the _hash of the artwork

createNewNFT(_to, string _hash)

Reset the owner rights for a _to address with the _tokenId token you want to transfer, this function is only called by the owner of _tokenId.

setOwnerToTokenId(_to, _tokenId)

Create a new product for selling with with hashed information (_hashInfo), hashed image (_hashImg), and the desired price (_price) for this product

createNewProduct(_hashInfo, _hashImg,  _price)

Buy the product with ETH cryptocurrency

buyWithETH(_tokenId)

Buy the product with dollar currency

buyWithCurrency(_tokenId, transactionId)

Create an offer for a product has id (_tokenId), with quantity of _amount, token ERC20 (_token20) as you wish, and the desired price (_price) for this product

offer(_tokenId, _amount, _token20, _timeout)

Approve an offer

approveOffer(_tokenId, _index)

Transfer owner after the offer was approved

Transfer(_tokenId, _oldOwner, _newOwner)

Usage

For better understanding on how to use block-commerce-contract for an Ethereum-based marketplace web application, you can go to this website. Some functions are currently availble: