samcullin / lending-platform

POC NFT Lending Platform

Introduction

This is a small POC of a lending platform where users can deposit NFTs and borrow stable coins against them.

Getting started

Project

./apps/blockchain

This is a foundry project that contains the 3 contracts that are used in the lending platform.

./apps/web

This is a nextjs project that contains the frontend for the lending platform.

./docker-compose.yml

This is the docker-compose file that will start the foundry node and the nextjs app.

Installation

Install Web App Deps

cd apps/web
bun i

Clone foundry submodules

git submodule update --init --recursive

Usage

Start the app

docker compose up -d

docker compose logs anvil

Import the 6th private key into metamask. Or use the following mnemonic to import the account into metamask.

Open the webpage

open http://localhost:3000

Use the newly imported account to connect to the site.

Struggles

Minified Npm Packages

The compiled npm packages should not be minified as it makes quick debugging difficult. And makes ad-hock patching unfeasible.

Workaround: Coped the hook that needed the change into the project

Disconnecting wallet

There seems to be an issue when you disconnect using the metamask sdk the useAccount hook will update before the useSdk hook which causes an issue on when a sync between metamask sdk and wagmi sdk.

Workaround: Left this now the app will attempt to reconnect the wallet if it is disconnected.

Metamask caching issue 1.

No way to clear the cache of metamask, so if you have a wallet connected to the site Seems to be specific to the approval functions.

Workaround: Added randon nonce when deploying contract to force unique contract addresses.

Metamask caching issue 2.

Getting nft approval addresses seem to be cached until the page reloads

Workaround: Added randon nonce when deploying contract to force unique contract addresses.