social-tw-website/packages/contracts

Sample Unirep Project

This project demonstrates a basic Unirep application. It comes with a sample contract, a test for that contract, and a script that deploys that contract.

Try running some of the following tasks:

Compile

yarn build

Test

Running All Tests

yarn test

Running Single Test File

SignupAndPost

yarn contracts test ./test/SignupAndPost.test.ts

Comment

yarn contracts test ./test/Comment.test.ts

Deploy to local hardhat network

yarn hardhat node

and

yarn deploy

Contract Explanation

variables

1. latestPostId: A global variable to record the latest post ID.

mappings

1. postCommentIndex:
   • postId uint256 => commentId uint256
   • To maintain & record the comment id for each post
2. epochKeyCommentMap a 2-layer mapping:
   • epochKey uint256 => ( postId uint256 => commentId uint256)
   • To store the epoch key for each post-comment pair
3. proofNullifier
   • proof bytes32 => bool
   • To check if the same proof is used before.
4. userRegistry
   • userId uint256 => bool
   • To check if same user id is used before.