Implement USDT-based multi-chain event manager and add README

README.md

@@ -1,72 +1,30 @@
-<!--
-parent:
-  order: false
--->
-
-<div align="center">
-  <h1> Fishcake Contracts Repo</h1>
-</div>
-
-<div align="center">
-  <a href="https://github.com/FishcakeLab/fishcake-contracts/releases/latest">
-    <img alt="Version" src="https://img.shields.io/github/tag/FishcakeLab/fishcake-contracts.svg" />
-  </a>
-  <a href="https://github.com/FishcakeLab/fishcake-contracts/blob/main/LICENSE">
-    <img alt="License: Apache-2.0" src="https://img.shields.io/github/license/FishcakeLab/fishcake-contracts.svg" />
-  </a>
-</div>
-
-Fishcake Contracts Project
-
-## Installation
-
-For prerequisites and detailed build instructions please read the [Installation](https://github.com/FishcakeLab/fishcake-contracts/) instructions. Once the dependencies are installed, run:
-
-```bash
-git submodule update --init --recursive --remote
-```
-or
-```bash
-forge install foundry-rs/forge-std --no-commit
-forge install OpenZeppelin/openzeppelin-contracts-upgradeable --no-commit
-forge install OpenZeppelin/openzeppelin-contracts --no-commit
-forge install OpenZeppelin/openzeppelin-foundry-upgrades --no-commit
-```
-
-Or check out the latest [release](https://github.com/FishcakeLab/fishcake-contracts).
-
-##  Test And Depoly
-
-```bash
-$env:PRIVATE_KEY = "0x2a871"
-$env:USDT_ADDRESS = "0x3C4249f1cDfaAAFf"
-$env:OPENZEPPELIN_BASH_PATH = "C:/Users/65126/Documents/Git/bin/bash.exe"
-```
-
-
-### test
-```
-forge test --ffi
-```
-
-### Depoly
-
-```
-forge script script/DeployerV2.s.sol:DeployerScript --rpc-url $RPC_URL --private-key $PRIVKEY --ffi
-
-```
-
-### Upgrade
-
-```
-forge script script/UpgradeInvestorSalePoolDeployerV2.s.sol:UpgradeInvestorSalePoolDeployer --rpc-url $RPC_URL --private-key $PRIVKEY --ffi
-```
-
-## Community
-
-
-## Contributing
-
-Looking for a good place to start contributing? Check out some [`good first issues`](https://github.com/FishcakeLab/fishcake-contracts/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22).
-
-For additional instructions, standards and style guides, please refer to the [Contributing](./CONTRIBUTING.md) document.
+# My Fishcake Multi-Chain Event Manager – Hackathon Project (Direction 2)
+
+Simplified, USDT-only Event Manager contract for Fishcake (AI × Web3 Hackathon).
+
+## What I Built
+- Forked original Fishcake repo
+- Removed all non-core features (FCC mining, NFT logic, complex rewards)
+- Focused on **USDT stablecoin activities**
+- Added upgradeability (Transparent Proxy via OpenZeppelin)
+- Security: ReentrancyGuard, Pausable, SafeERC20, emergency withdraw
+- Basic frontend attempt (React + wagmi + RainbowKit still building..)
+- Local deployment proof with Foundry Anvil
+
+## Requirements Met (Direction 2)
+- ✅ Supports multi-chain deployment (pure EVM Solidity)
+- ✅ Simplified ecological functions, core only
+- ✅ USDT stablecoin-based activities
+- ✅ Consistent logic across chains
+- ✅ Event creation, reward distribution, verification/finish
+
+## Tech Stack
+- Solidity 0.8.26 + Foundry
+- OpenZeppelin upgradeable contracts
+
+## Future Plans
+- Deploy to Sepolia + BSC Testnet when test ETH is available
+- Add USDC support + token registry
+- Build a full React frontend using wagmi + RainbowKit, with event listing, creation flows, and enhanced UI/UX.
+
+Open to feedback & collaboration!

script/DeployMultiChain.s.sol

@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.26;
+
+import "forge-std/Script.sol";
+import "openzeppelin-foundry-upgrades/Upgrades.sol";
+import {FishcakeEventManagerMultiChain} from "../src/contracts/core/FishcakeEventManagerMultiChain.sol";
+
+contract DeployMultiChain is Script {
+    // USDT addresses on different chains
+    address constant BSC_USDT = 0x55d398326f99059fF775485246999027B3197955;
+    address constant POLYGON_USDT = 0xc2132D05D31c914a87C6611C10748AEb04B58e8F;
+    address constant ARBITRUM_USDT = 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9;
+    address constant OPTIMISM_USDT = 0x94b008aA00579c1307B0EF2c499aD98a8ce58e58;
+    address constant BASE_USDT = 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913;
+    address constant ETH_USDT = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
+
+    // Testnet USDT addresses
+    address constant BSC_TESTNET_USDT = 0x337610d27c682E347C9cD60BD4b3b107C9d34dDd;
+    address constant SEPOLIA_USDT = 0x7169D38820dfd117C3FA1f22a697dBA58d90BA06;
+
+    function run() external {
+        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
+        address deployer = vm.addr(deployerPrivateKey);
+
+        console.log("==== Fishcake Multi-Chain Deployment ====");
+        console.log("Deployer:", deployer);
+        console.log("Chain ID:", block.chainid);
+
+        // Get USDT address for current chain
+        address usdtAddress = getUSDTAddress(block.chainid);
+        require(usdtAddress != address(0), "USDT address not found for this chain");
+
+        console.log("USDT address:", usdtAddress);
+
+        vm.startBroadcast(deployerPrivateKey);
+
+        // Deploy proxy
+        address proxy = Upgrades.deployTransparentProxy(
+            "FishcakeEventManagerMultiChain.sol",
+            deployer,
+            abi.encodeCall(
+                FishcakeEventManagerMultiChain.initialize,
+                (deployer, usdtAddress)
+            )
+        );
+
+        console.log("\n=== Deployment Successful ===");
+        console.log("Proxy Address:", proxy);
+
+        // Get implementation address
+        bytes32 implSlot = vm.load(proxy, bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
+        address implementation = address(uint160(uint256(implSlot)));
+        console.log("Implementation:", implementation);
+
+        vm.stopBroadcast();
+
+        console.log("\n=== Next Steps ===");
+        console.log("1. Verify contract:");
+        console.log("   forge verify-contract", implementation, "FishcakeEventManagerMultiChain --chain-id", block.chainid);
+        console.log("2. Interact with proxy at:", proxy);
+    }
+
+    function getUSDTAddress(uint256 chainId) internal pure returns (address) {
+        // Mainnets
+        if (chainId == 56) return BSC_USDT; // BSC
+        if (chainId == 137) return POLYGON_USDT; // Polygon
+        if (chainId == 42161) return ARBITRUM_USDT; // Arbitrum
+        if (chainId == 10) return OPTIMISM_USDT; // Optimism
+        if (chainId == 8453) return BASE_USDT; // Base
+        if (chainId == 1) return ETH_USDT; // Ethereum
+
+        // Testnets
+        if (chainId == 97) return BSC_TESTNET_USDT; // BSC Testnet
+        if (chainId == 11155111) return SEPOLIA_USDT; // Sepolia
+
+        return address(0);
+    }
+}