# ✅ Environment Setup - Verification Complete

## 🎉 All Scripts Verified

All scripts have been verified to properly load environment variables from `.env` files.

---

## ✅ Scripts Checked

### 1. `src/strat/cli.ts` ✅

- ✅ Loads `dotenv` FIRST before any other imports
- ✅ Uses `getNetwork()` which lazy-loads RPC URLs from env vars
- ✅ Validates RPC URLs and shows helpful error messages

### 2. `src/cli/cli.ts` ✅

- ✅ Loads `dotenv` FIRST before any other imports
- ✅ Uses `process.env.PRIVATE_KEY` for transaction execution
- ✅ Uses RPC URLs from chain configs (which read from env)

### 3. `scripts/test-strategy.ts` ✅

- ✅ Loads `dotenv` FIRST before any other imports
- ✅ Reads `MAINNET_RPC_URL`, `TEST_SCENARIO`, `TEST_NETWORK` from env
- ✅ Validates RPC URL before proceeding
- ✅ Shows clear error messages if not configured

### 4. `scripts/check-env.ts` ✅

- ✅ Loads `dotenv` FIRST
- ✅ Verifies all RPC URLs are set and accessible
- ✅ Tests connections to each network
- ✅ Provides helpful feedback

### 5. `scripts/verify-setup.ts` ✅

- ✅ Loads `dotenv` FIRST
- ✅ Comprehensive verification of all setup components
- ✅ Checks scripts, configs, and scenarios

---

## ⚙️ Network Configuration

### `src/strat/config/networks.ts` ✅

- ✅ Lazy-loads RPC URLs when `getNetwork()` is called
- ✅ Ensures `dotenv` is loaded before reading env vars
- ✅ Supports network-specific env vars (e.g., `MAINNET_RPC_URL`)
- ✅ Falls back to defaults if not set

### `config/chains/*.ts` ✅

- ✅ Read `process.env` at module load time
- ✅ Since all entry points load `dotenv` FIRST, this works correctly
- ✅ Have sensible defaults as fallbacks

---

## 📋 Environment Variables

### Required

| Variable | Description | Status |
|----------|-------------|--------|
| `MAINNET_RPC_URL` | For mainnet fork testing (required for most scenarios) | ✅ |

### Optional

| Variable | Description | When Needed |
|----------|-------------|-------------|
| `BASE_RPC_URL` | For Base network testing | Multi-chain testing |
| `ARBITRUM_RPC_URL` | For Arbitrum testing | Multi-chain testing |
| `OPTIMISM_RPC_URL` | For Optimism testing | Multi-chain testing |
| `POLYGON_RPC_URL` | For Polygon testing | Multi-chain testing |
| `PRIVATE_KEY` | Only needed for mainnet execution (not fork testing) | Mainnet execution |
| `TEST_SCENARIO` | Override default test scenario | Custom scenarios |
| `TEST_NETWORK` | Override default test network | Multi-chain testing |

---

## ✅ Validation

All scripts now include:

- ✅ RPC URL validation (checks for placeholders)
- ✅ Clear error messages if not configured
- ✅ Helpful suggestions (e.g., "Run 'pnpm run check:env'")
- ✅ Fallback to defaults where appropriate

---

## 🧪 Testing

Run these commands to verify your setup:

```bash
# 1. Check environment variables
pnpm run check:env

# 2. Verify complete setup
pnpm run verify:setup

# 3. Test with a scenario (requires valid RPC URL)
pnpm run strat:test
```

---

## 🔧 How It Works

### 1. Entry Point (CLI script or test script)

- 📥 Loads `dotenv.config()` FIRST
- 📄 This reads `.env` file into `process.env`

### 2. Network Configuration

- 🔗 `getNetwork()` is called
- ⚡ Lazy-loads RPC URLs from `process.env`
- ✅ Returns network config with RPC URL

### 3. Fork Orchestrator

- 🔌 Uses the RPC URL from network config
- 🌐 Connects to the RPC endpoint
- 🍴 Creates fork if needed

### 4. Validation

- ✅ Scripts validate RPC URLs before use
- 🔍 Check for placeholders like "YOUR_KEY"
- 💬 Show helpful error messages if invalid

---

## 🔧 Troubleshooting

If environment variables aren't loading:

### 1. Check .env file exists

```bash
ls -la .env
```

### 2. Verify dotenv is loaded first

- ✅ Check that `import dotenv from 'dotenv'` and `dotenv.config()` are at the top
- ✅ Before any other imports that use `process.env`

### 3. Test environment loading

```bash
node -e "require('dotenv').config(); console.log(process.env.MAINNET_RPC_URL)"
```

### 4. Run verification

```bash
pnpm run verify:setup
```

---

## 💡 Best Practices

### 1. Always load dotenv first

```typescript
// ✅ Good
import dotenv from 'dotenv';
dotenv.config();
import { other } from './other.js';
```

### 2. Use lazy-loading for configs

```typescript
// ✅ Good - lazy load
function getNetwork() {
  return { rpcUrl: process.env.MAINNET_RPC_URL || 'default' };
}
```

### 3. Validate before use

```typescript
// ✅ Good - validate
if (!rpcUrl || rpcUrl.includes('YOUR_KEY')) {
  throw new Error('RPC URL not configured');
}
```

---

## 📊 Summary

| Check | Status | Description |
|-------|--------|-------------|
| Scripts load `.env` files | ✅ | All scripts properly load `.env` files |
| RPC URL validation | ✅ | All scripts validate RPC URLs before use |
| Lazy-loading configs | ✅ | Network configs lazy-load to ensure env vars are available |
| Clear error messages | ✅ | Clear error messages guide users to fix issues |
| Verification scripts | ✅ | Verification scripts help diagnose problems |
| Documentation | ✅ | Documentation explains the setup process |

---

## 🎉 Conclusion

The environment setup is complete and verified! ✅

All scripts are properly connected to `.env` files and handle secrets correctly. You're ready to start building DeFi strategies!

---

## 📚 Related Documentation

- 📖 [Environment Setup Guide](./ENV_SETUP.md)
- ✅ [Verification Summary](./ENV_VERIFICATION_SUMMARY.md)
- 🧪 [Strategy Testing Guide](./STRATEGY_TESTING.md)