CPChain CLI Tools

This tool aim to help developer develop smart contract on CPChain mainnet.

Usage

npm install -g cpchain-cli

cpchain-cli help

cpchain-cli create my-contract

cd my-contract

yarn

# Test contract
npx truffle test

Base Contracts

The CPChain foundation has provided this repo which has many tested base contracts. Developers can use it to develop and test smart contracts.

Deploy on Testnet

Before deploying contract on the mainnet, we suggest developers the smart contracts on Testnet first to secure test. You can get Test CPC coins by the faucet. This faucet drips 100 CPC every 10 seconds. You can register your account in our queue.

Create account

You can use the cpchain-cli create a account directly.

# create a new account
cpchain-cli account new

You can check your keystore in keystore folder. You can execute cpchain-cli account new -h to get detailed parameters.

Deploy

Now, copy your address and access faucet to get test coins. Then build your contract and deploy it on Testnet:

# build contracts
npm run build

# deploy on testnet (Specify your keystore)
cpchain-cli contract deploy --keystore <The path of your keystore> --builtContract build/contracts/MyContract.json --endpoint https://civilian.testnet.cpchain.io --chainID 41

# if need deploy multiple contracts which writes in migrations, you can use deploy-truffle command
cpchain-cli contract deploy-truffle --keystore <The path of your keystore> --endpoint https://civilian.testnet.cpchain.io --chainID 41 -P <Project Path>

CPChain CLI Configuration

If you thinks the options is too many to input, you can create a file cpchain-cli.toml, then specify options in this file, as below:

[chain]
endpoint="https://civilian.testnet.cpchain.io"
chainID=41

[wallet]
# The path of your keystore file
keystore="keystore/key.json"
# You can specify the password in configuration (Only in DEVELOPMENT and TESTING, this is unsafe)
# password="123456"

[contract]
# built-contract is the path of the built JSON file by truffle
builtContract=""
# After the contract is deployed, you can specify this field when you need to call the contract
contractAddress=""

Then, when you deploy smart contracts, your commands:

cpchain-cli contract deploy --builtContract build/contracts/MyContract.json

Manage Contract by Command-Line

After deploying your contract, you will need to manage it. The cpchain-cli can also support managing deployed contract. Please run as below to get all commands:

cpchain-cli contract -h

If you want to check options, you can use cpcchain-cli contract view -h, for example:

cpchain-cli contract view --builtContract build/contracts/MyContract.json --contract-address <contract address> --methodName <method name of parameter name> --parameters <parameters splited by ,>

You can add --built-contract and --contract-address to the cpchain-cli.toml as above. Then you don't need to pass these two options in command, just run: cpchain-cli contract view --methodName <method name>.

If your method needs to specify parameters, use --parameters.

If you want to call your contract, you can use cpchain-cli contract call -h, for example:

cpchain-cli contract call -c build/contracts/MyContract.json --contract-address <contract address> -m <function name> --amount <amount> -k <keystore file> --endpoint https://civilian.testnet.cpchain.io --chainID 41 --parameters <parameters splited by ,>

Add you can add --amount to specify the amount of CPC.

Deploy on Mainnet

Just replace the endpoint and chainID with:

• endpoint: [https://civilian.cpchain.io]
• chainID: 337

Develop

npm i

npm link

scripts/run src/index.ts -h

npm run lint

npm run lint:fix

npm run build

# publish
# npm publish

Transfer CPC

You can transfer CPC by this CLI: cpchain-cli -h. Firstly, please create a file named cpchain-cli.toml:

[chain]
endpoint="https://civilian.testnet.cpchain.io"
chainID=41

[wallet]
# The path of your keystore file
keystore="keystore/key.json"
# You can specify the password in configuration (Only in DEVELOPMENT and TESTING, this is unsafe)
# password="123456"

Then, the commands as below:

cpchain-cli transfer --to 0x1fbBacADcD78f3508aa55bd948fE27660E58a0d2 --amount 0.9

Generate Typescript Code for Using You Solidity

This tool provide a command generate-sol-sdk to help developers generate code in typescript. The generated code can help developers directly call the methods in solidity contract. Command as below:

yarn build

cpchain-cli generate-sol-sdk --builtContract build/contracts/Game.json

After executing this command, this tool will generate a file in src/generated, and show you a demo snippet.

FAQ

为什么不用 swc 打包

因为当前版本仅支持 commonjs 打包，不支持 ES Modules（官方文档），考虑当需跟上最新的发展，以及很多库已转向 ES Modules，故先弃用 swc 打包方式。

Bytecode generated by truffle is different from generated by solc

Issue

References

• SWC
• ESLint Rules
• CommanderJs
• Boxen: Create boxes in the terminal