Smart Contracts in Solidity - C#

Connect smart contracts with .NET through web APIs.

Installation

1. Download project and restore Nugets
2. Configure appsettings.json with your own details.
3. Launch project.

Docker run

Open cmd and in docker-compose.yml directory run:

1. docker compose up -d --> Create and start docker container
2. docker ps --> see all containers and check port
3. open url: http://localhost:55757/swagger/index.html (port specified on command docker ps)

Redis

docker run --name my-redis -p 6379:6379 -d redis

To check if redis work you can test the following:

1. docker exec -it my-redis sh

2. #redis-cli

3. ping

Technical specs

• Clean architecture (Presentation layer has my controllers because I use Swagger as my UI)
• Generic Repository.
• Unit of Work.
• Entity framework.
• Api Gateway Pattern.
• Mediatr CQRS pattern.

Entity Framework:

Always target Infrastructure project from Default Project selection in Package Manager Console

Add-Migration "DB Initialize" -context PostgreSqlDbContext (context of your choice)

Update-Database -context PostgreSqlDbContext (context of your choice)

In order to compile a smart contract I am using visual studio code with solidity extension. After compilation I use ABI and bytecode from .json file.

I have create different controllers for different smart contracts:

• SmartContractController

  • DeployAnyContract (deploy contract with or without parameters)
  • CallContractVariable (call any variable in contract)
  • CallReadFunction (call read functions in contract)
  • CallWriteFunction (call write functions in contract)
  • TrackCryptoWhalesForAnyToken (track "Transfer" event in any token of your choice)

• NetworkController

  • GetBlock
  • GetAllTransactionOfABlock
  • GetAllContractCreationTransactions

• Wallet

  • Check balance
  • Send ether/token to another wallet

• UniswapV2

  • AllPairs
  • GetReserves
  • GetAmountsOut
  • Approve
  • SwapExactETHForTokens

• UniswapV3

  • GetReserves (getPool, tokens and balanceOf)
  • SwapExactTokensForTokens using Router02
  • GetTokenData (using GraphQL)
  • GetMostLiquidPools (using GraphQL)
  • GetPoolData (using GraphQL) GetRecentSwapsWithinAPool using GraphQL)

• Lottery smart contract

  • Deploy
  • GetRandomNumber
  • GetPlayers
  • GetBalance
  • EnterLottery
  • PickWinner

• CryptoToken

  • Deploy ERC20 Token
  • GetBalance
  • Mint
  • Approve
  • Allowance
  • DestroySmartContract
  • Transfer
  • IncreaseApproval
  • DecreaseApproval
  • Burn
  • TransferFrom
  • BurnFrom

• NFTController

  • Deploy smart contract
  • Mint NFT

• CryptoCompare

In addition i use the following tools to convert ABI to string: https://elmah.io/tools/multiline-string-converter/ and from multiline string to single line: https://tools.techcybo.com/multiline-to-single-line

In order to test UniswapV3 get prices you can use the following addresses: WETH : 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 DAI: 0x6B175474E89094C44Da98b954EedeAC495271d0F

Unit tests