Simple blog

The project aims to create a streamlined system for managing a blogging platform through the use of smart contracts. Users can create one or multiple blogs using the BlogFactory. They can then publish Posts, each of which is represented as a unique NFT that can be traded among users. The contents of each post are stored in a JSON file on IPFS and linked to the NFT.

BlogFactory.sol

The BlogFactory provides access to the newBlog method, which allows the calling user to instantiate a Blog smart contract. This method can be invoked multiple times by each user. Additionally, the getBlogs method returns an array of blogs associated with a specific address provided as input.

Events

• event NewBlog(address owner, address blogAddr);

Blog.sol

The following is a list of methods provided by the Blog contract:

• setBlogMetadata: used to set various metadata such as the title and image of the blog.
• newPost: creates a new post, including its name, symbol, and a URI link to the IPFS resource that stores the content.
• getPosts: retrieves an array of all posts belonging to the blog.
• transferPost: transfers ownership of a specified post.
• addPost: adds a post to your collection after it has been transferred to you.*

Events

• event NewPost(address owner, address post, string URI);
• event TransferPost(address oldOwner, address newOwner, address post);
• event NewBlogMetadata(address blog, string URI);

Post.sol

The Post contract represents a post as a unique NFT entity.

Events

• event ContentEdited(address post, address from, string URI);
• event ChangePostOwner(address post, address oldOwner, address newOwner);

TheGraph

The contract was used to index content using TheGraph. Here is the link to the dedicated repository TheGraph simple blog repository

Example addresses (Goerli)

• BlogFactory address: 0x2259Ff8FfEF4e92454a4ef1ED516291c5A2CC3fC
• Blog address: 0x9bdAC7F504ED47f4966C8A061eCf88699A7Dc99d
• Post address: 0x389272b009219E88B5A7c7331dC432e3018194Ba
• Post address: 0x0F85d4377EAa86855aA8f1ee9a8204A8cD24755f

Hardhat command

Try running some of the following tasks:

npx hardhat help
npx hardhat test
npx hardhat run scripts/deploy.js

To deploy your own contracts you should create a .env file with the wallet mnemonic passphrase and endpoint to the nodes

MNEMONIC=mnemonic here
MUMBAI_ENDPOINT=https://polygon-mumbai.infura.io/v3/
GOERLI_ENDPOINT=https://goerli.infura.io/v3/
ETHERSCAN_API_KEY=

All these environment variables are importend into the hardhat.config.js file.