## Pyth Lazer EVM Contract and SDK

This package is built using [Foundry](https://book.getfoundry.sh/).

`PythLazer` is an EVM on-chain contract that keeps track of trusted signers of Pyth Lazer payloads. It allows consumers to easily check validity of Pyth Lazer signatures while enabling key rotation.

`PythLazerReceiver` contains utilities required to validate and parse Pyth Lazer payloads. Contracts should use `PythLazerReceiver` as the base contract (or one of the base contracts) of their contracts to gain access to the provided functions.

### Build

```shell
forge build
```

### Test

```shell
forge test
```

### Format

```shell
forge fmt
```

### Gas Snapshots

```shell
forge snapshot
```

### Anvil

Anvil does not come with CreateX by default. It can be deployed or an RPC which has the contract can be forked. The below command forks an RPC with a functional CreateX contract.

```shell
anvil --fork-url "https://sepolia.drpc.org"
```

### Deploy

Run the following commands to deploy the `PythLazer` contract to the target network. For the verification to work, you need to provide an API key (which is
etherscan most of the times). If you can't make it work, you can always deploy the contract without verification and verify it manually later (using the
standard input json format).

```shell
export ETHERSCAN_API_KEY=<your_etherscan_api_key>
forge script script/PythLazerDeploy.s.sol --rpc-url <your_rpc_url> --private-key <your_private_key> --broadcast --verify
```

Then, run the following command to add the trusted signer to the `PythLazer` contract. The trusted signer is the address of the Pyth Lazer payload signer, and
the expiration timestamp is the time when the signer will no longer be trusted.

```shell
cast send --rpc-url <your_rpc_url> --private-key <your_private_key> 0xACeA761c27A909d4D3895128EBe6370FDE2dF481 "updateTrustedSigner(address,uint256)" \
    "<trusted_signer_address>" "<trusted_signer_expiration_timestamp>"
```

### Upgrade

The UUPSUpgradeable feature adds functions to the cocntract which support upgrading through the use of an UUPS/ERC1967Proxy. A function can be defined to migrate state if needed. Be careful of changing storage slots when upgrading. See [Documentation](https://docs.openzeppelin.com/upgrades-plugins/1.x/writing-upgradeable) for more details.
In addition, the private key is necessary or contracts will be deployed to different addresses than expected.

```shell
forge script script/PythLazerDeploy.s.sol --rpc-url <your_rpc_url> --private-key <your_private_key> --broadcast --sig "migrate()"
```

### Cast

```shell
cast <subcommand>
```

### Help

```shell
forge --help
anvil --help
cast --help
```
