NFT Pawning Shop

This application is for people who own some NFT token, they need money but don't want to sell their's token, they can list the token in our application as collateral, and other users can give them a loan. So, the borrower got the money, their token is locked in our smart contract. When the time of repayment comes in, the borrower has to pay the original money plus interest to the lender, if they are not, then the token will be transferred to the lender.

Run project

1. Install Metamask

1.1 Install Metamask extension in Chrome here
1.2 After that, create an account.
Remember to keep the mnemonic of your accounts in secret.
Mnemonic contains 12 words and it look like: jealous expect hundred young unlock disagree major siren surge acoustic machine catalog
We gonna need this mnemonic when create workspace in Ganache\

2. Install Ganache

2.1 Install Ganache here
2.2 Start Ganche UI
Ganache UI
2.3 Choose New Workspace
2.4 Fill in the information

Just fill workspace name, and then switch to tab Account & Key and fill in the mnemonic you got from step 1.
2.5 Save workspace
Now you got an new workspace in Ganache, and all the accounts you see on the UI are the same with accounts in Metamask wallet.
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Remember the Network ID and RPC Server, because we gonna need it later.
So this Ganache server is running on host http://127.0.0.1 and port 7545.\

3. Connect Metamask to Ganache

3.1. Click on Metamask icon in Chrome
3.2. Click button to show all availabe networks

So, our Ganache network is just like Ethereum but it run on local machine, now we want to add our network to Metamask.
3.2. Click on Custom RPC
3.3. Fill in information like bellow

3.4. Finally connect to Ganache\

4. Deploy smart contract to Ganache

4.1. Go to /solidity folter
4.2. Run command npm install
4.3. Run command truffle migrate --network ganache --reset
4.4. You can view some information about the smart contracts in Contracts tab.
Do you see the address of the PawningContract, keep it, because we need it in the later step.
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5. Install Go

Go here\

6. Run api

6.1 Go to /api folder
6.2 Run command go get . to install packages
6.3 Update mongodb uri in app.env
6.4 Run command go run .\

7. Run event listener

7.1 Go to /event_listener folder
7.2 Run command go get . to install packages
7.3 Update address of PawningShop contract to app.env, because your contract address is changed when deployed
7.4 run command go run .\

8. Run UI

8.1 Go to /client folder
8.2 Run command npm install
8.3 Run command npm run serve\

GitHub

https://github.com/uss-kelvin/NFTPawnShopSmartContract