Avalanche contract repo

This repo is created based on repo https://github.com/ava-labs/avalanche-smart-contract-quickstart.

The contract I implemented is a simple Pawnbroker for NFTs. A borrower creates a contract setting a price for their NFT and a time until they can reclaim their NFT. A lender then can lend the ether to the borrower. If the borrower reclaims their NFT before the stipulated time, they can get their NFT back. If the deadline passes, the lender can appropriate the NFT.

To run tests run:

    npm run test

To deploy on local subnet run:

    npm run deploy-local

I created NFTPawnbroker from scratch. Some future developments for that contract would be to implement interest on payments, allow extensions on the deadline for a fee, and allow fractional lending.

Development logs

Installing avalanche

I installed avalanche and created a subnet:

creating subnet lfsmoura
Enter your subnet's ChainId. It can be any positive integer.
ChainId: 12345
Select a symbol for your subnet's native token
Token symbol: LEO
✔ Low disk use    / Low Throughput    1.5 mil gas/s (C-Chain's setting)
✔ Airdrop 1 million tokens to the default address (do not use in production)
✔ No
Successfully created genesis

Creating contract repo

I copied https://github.com/ava-labs/avalanche-smart-contract-quickstart repo to start my project.
I created an .env file to hold local variables initially.
I modified hardhat.config.ts file to use my local network
I tested hardhat with balances task:

    $ npx hardhat balances --network local
    0x8db97C7cEcE249c2b98bDC0226Cc4C2A57BF52FC has balance 1000000000000000000000000
    0x9632a79656af553F58738B0FB750320158495942 has balance 0
    0x55ee05dF718f1a5C1441e76190EB1a19eE2C9430 has balance 0
    0x4Cf2eD3665F6bFA95cE6A11CFDb7A2EF5FC1C7E4 has balance 0
    0x0B891dB1901D4875056896f28B6665083935C7A8 has balance 0
    0x01F253bE2EBF0bd64649FA468bF7b95ca933BDe2 has balance 0
    0x78A23300E04FB5d5D2820E23cc679738982e1fd5 has balance 0
    0x3C7daE394BBf8e9EE1359ad14C1C47003bD06293 has balance 0
    0x61e0B3CD93F36847Abbd5d40d6F00a8eC6f3cfFB has balance 0
    0x0Fa8EA536Be85F32724D57A37758761B86416123 has balance 0
    Done in 7.49s.

Creating a test and interface for contract

I created a simple contract with empty functions and created a test for it. The test initially failed because there was no logic in the contract.

To run tests run:

    npm run test

Deploying to local and testnet

Lastly I deployed the contract to local subnet and to FUJI testnet by running npm run deploy-local and npm run deploy.

> Executing task: npm run deploy-local <


> avalanche-smart-contract@1.0.0 deploy-local
> npx hardhat run scripts/deploy.ts --network local

NFT deployed to: 0x5DB9A7629912EBF95876228C24A848de0bfB43A9
Signer address: 0x8db97C7cEcE249c2b98bDC0226Cc4C2A57BF52FC
NFT Pawnbroker deployed to: 0x5DB9A7629912EBF95876228C24A848de0bfB43A9

> Executing task: npm run deploy <


> avalanche-smart-contract@1.0.0 deploy
> npx hardhat run scripts/deploy.ts --network fuji

NFT deployed to: 0xD2f748492044dF91667Dea05B7E158a94d8e2E0f
Signer address: 0x785d82e5407131474Ec1cE2895B94E05134738A9
NFTPawnbroker deployed to: 0xD2f748492044dF91667Dea05B7E158a94d8e2E0f