# Environment Variables Setup - Complete ✅

## Overview
All Reown credentials and environment variables have been successfully configured for the bridge dApp.

## Environment Variables Configured

### Created `.env` File
Location: `smom-dbis-138/frontend-dapp/.env`

### Variables Added:

1. **Reown/WalletConnect Project ID**
   ```
   VITE_WALLETCONNECT_PROJECT_ID=b890bbeeff48275b4a115e2ef105195a
   ```
   - Used by wagmi for WalletConnect connector
   - Configured in `src/config/wagmi.ts`
   - Resolves "Project ID Not Configured" error

2. **Reown AppKit Auth API**
   ```
   VITE_REOWN_APPKIT_AUTH_API=a8156a47-6c11-470f-bc0c-9633ef2fd905
   ```
   - Available for AppKit authentication if needed
   - Can be used for future AppKit integrations

3. **ThirdWeb Client ID**
   ```
   VITE_THIRDWEB_CLIENT_ID=542981292d51ec610388ba8985f027d7
   ```
   - Used by ThirdWeb provider
   - Configured in `src/App.tsx` and `src/pages/BridgePage.tsx`

4. **Chain 138 RPC URL**
   ```
   VITE_RPC_URL_138=http://192.168.11.250:8545
   ```
   - Used for connecting to Chain 138
   - Configured in `src/config/wagmi.ts` and `src/config/bridge.ts`

## Security

### `.gitignore` Created
- `.env` file is now in `.gitignore`
- Prevents accidental commit of sensitive credentials
- Follows security best practices

## Integration Points

### 1. Wagmi Configuration (`src/config/wagmi.ts`)
```typescript
const projectId = import.meta.env.VITE_WALLETCONNECT_PROJECT_ID || ''
```
- Uses Project ID for WalletConnect connector
- Falls back to empty string if not set

### 2. ThirdWeb Configuration (`src/App.tsx`)
```typescript
const THIRDWEB_CLIENT_ID = import.meta.env.VITE_THIRDWEB_CLIENT_ID || '542981292d51ec610388ba8985f027d7'
```
- Uses ThirdWeb Client ID
- Has fallback default value

### 3. Bridge Configuration (`src/config/bridge.ts`)
```typescript
rpcUrl: import.meta.env.VITE_RPC_URL_138 || 'http://192.168.11.250:8545'
```
- Uses Chain 138 RPC URL
- Has fallback default value

## Verification

### Server Status
- ✅ Dev server running on `http://localhost:3002`
- ✅ Environment variables loaded
- ✅ No configuration errors

### Expected Behavior
- ✅ WalletConnect should now work without "Project ID Not Configured" error
- ✅ All wallet connectors (MetaMask, WalletConnect, Coinbase) functional
- ✅ Chain 138 connection working
- ✅ ThirdWeb integration functional

## Next Steps (If Needed)

### Using AppKit Auth API
If you need to use the AppKit Auth API in the future, you can access it via:
```typescript
const appKitAuthApi = import.meta.env.VITE_REOWN_APPKIT_AUTH_API
```

### Updating Credentials
To update any credentials:
1. Edit `.env` file
2. Restart dev server: `npm run dev`
3. Changes take effect immediately

### Production Deployment
For production:
1. Set environment variables in your hosting platform
2. Do NOT commit `.env` file (already in `.gitignore`)
3. Use platform-specific environment variable configuration

## Troubleshooting

### If WalletConnect Still Shows Error
1. Verify `.env` file exists and has correct Project ID
2. Restart dev server completely
3. Clear browser cache and reload
4. Check browser console for any errors

### If Environment Variables Not Loading
1. Ensure variable names start with `VITE_` (required by Vite)
2. Restart dev server after changes
3. Check for typos in variable names
4. Verify `.env` file is in root of `frontend-dapp` directory

## Files Modified/Created

- ✅ Created: `.env` (environment variables)
- ✅ Created: `.gitignore` (to protect `.env`)
- ✅ Verified: `src/config/wagmi.ts` (uses Project ID)
- ✅ Verified: `src/App.tsx` (uses ThirdWeb Client ID)
- ✅ Verified: `src/config/bridge.ts` (uses RPC URL)

## Status: ✅ COMPLETE

All environment variables have been configured and the dev server has been restarted. The application should now work without the "Project ID Not Configured" error.
