feat: Implement decentralized wallet connection - Remove WalletConnect/ReOwn dependency

[kartikeyg0104]

Team- Big bull
Closes #19

Summary

This PR addresses the decentralization concerns with the current wallet connection implementation by removing the dependency on ReOwn's WalletConnect SDKs.

Problem Statement

The project's previous reliance on ReOwn's WalletConnect SDKs posed decentralization risks:

Risk	Description
Centralization	Required a centralized projectId from WalletConnect/ReOwn
Usage limits	Subject to rate limiting from external services
Potential censorship	Single point of failure that could block users
Service dependency	Application functionality tied to third-party uptime

Solution Implemented

Replaced RainbowKit's WalletConnect-dependent configuration with a fully decentralized approach using Wagmi directly.

New Files Added

File	Description
src/config/wagmi.ts	Custom Wagmi configuration with direct wallet connectors
src/components/ConnectWallet.tsx	Custom wallet connection UI component with full functionality

Modified Files

File	Changes
src/App.tsx	Removed RainbowKit provider, uses new decentralized wagmi config
src/Navbar.tsx	Replaced RainbowKit ConnectButton with custom ConnectWallet component
package.json	Removed @rainbow-me/rainbowkit dependency, pinned wagmi/viem versions
README.md	Added documentation for decentralized wallet integration

Supported Wallet Connections

Wallet Type	Connection Method	Notes
MetaMask	Injected (Browser Extension)	Most popular wallet
Brave Wallet	Injected (Browser Extension)	Built into Brave browser
Trust Wallet	Injected (Browser Extension)	Mobile-first wallet
Other Browser Wallets	Injected (EIP-1193)	Any EIP-1193 compliant wallet
Coinbase Wallet	Direct SDK Integration	No WalletConnect relay

Supported Networks

20+ EVM chains including:

Mainnets:

• Citrea Testnet (primary)
• Ethereum Mainnet
• Polygon
• Arbitrum
• Optimism
• Base
• BSC
• Avalanche
• Fantom
• Gnosis
• zkSync
• Linea
• Scroll

Testnets:

• Sepolia
• Mumbai
• Arbitrum Sepolia
• Optimism Sepolia
• Base Sepolia
• BSC Testnet
• Avalanche Fuji
• Fantom Testnet

Benefits

Benefit	Description
✅ No external service dependencies	Works without any third-party relay servers
✅ No API keys or project IDs required	Zero configuration needed
✅ Works offline once connected	No ongoing network requirements to relay
✅ Cannot be rate-limited or censored	Direct peer-to-peer connection
✅ Enhanced 'unstoppability'	True decentralization achieved
✅ Reduced bundle size	Removed RainbowKit (~50KB+ savings)
✅ Better performance	No relay server latency

Features of Custom ConnectWallet Component

• 🎨 Dark theme matching the existing UI design
• 🔄 Network/chain switching with visual feedback
• 📋 Copy address to clipboard functionality
• 🔍 View on block explorer link for each connected chain
• 📱 Responsive design works on mobile & desktop
• ⌨️ Keyboard accessibility (Escape to close modals)
• 🔒 Click outside to close modal behavior
• 💰 Balance display showing native token balance
• 🌐 Multi-chain indicator showing current network

Technical Implementation Details

Wagmi Configuration (src/config/wagmi.ts)

// Direct connectors without WalletConnect
connectors: [
  injected({ shimDisconnect: true }),
  coinbaseWallet({ appName: "Bene Fundraising" }),
]

Key Design Decisions

1. Injected Connector First: Prioritizes browser extension wallets for best UX
2. Multi-injection Discovery: Automatically detects multiple installed wallets
3. No SSR Dependency: Removed SSR flag since we're using client-side rendering
4. Optimized Query Client: Added staleTime and retry configuration for better caching

Migration Notes

For developers working on this codebase:

1. RainbowKit imports removed: No longer use @rainbow-me/rainbowkit
2. New ConnectWallet component: Import from ./components/ConnectWallet
3. Config location changed: Wagmi config now in ./config/wagmi.ts
4. No projectId needed: Remove any WalletConnect projectId references

Screenshots

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Goal Achieved

Enhanced the project's unstoppability and resilience by removing all centralized dependencies from the wallet connection flow.

Summary by CodeRabbit

Release Notes

• New Features

  • Decentralized wallet integration with direct browser extension connections
  • New wallet selection interface with chain switching capabilities
  • Account menu featuring address management, balance display, and disconnect functionality
  • Support for multiple wallet types including injected wallets and Coinbase Wallet

• Documentation

  • Added comprehensive guide on decentralized wallet connections and supported networks

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Walkthrough

This PR removes RainbowKit and WalletConnect/ReOwn SDK dependencies, replacing them with a decentralized wallet integration using wagmi. It introduces a new ConnectWallet component supporting direct browser extension wallets and Coinbase Wallet, updated dependency versions, and corresponding documentation.

Changes

Cohort / File(s)	Summary
Documentation & Dependencies README.md, package.json	Added "Decentralized Wallet Integration" section documenting direct wallet connections without WalletConnect/ReOwn SDKs; removed @rainbow-me/rainbowkit dependency, updated viem to ^2.21.0 and wagmi to ^2.12.0.
Wagmi Configuration & Custom Wallet Component src/config/wagmi.ts, src/components/ConnectWallet.tsx	Created new wagmi configuration module with consolidated chain list, injected and Coinbase Wallet connectors, and HTTP transports; introduced ConnectWallet component with wallet selection UI, connection flow, chain switching, account menu, balance fetching, and local modal/menu handling.
App Integration src/App.tsx, src/Navbar.tsx	Removed RainbowKit setup and UI wrapper from App; integrated wagmiConfig and added dedicated QueryClient with 5-minute staleTime; replaced RainbowKit ConnectButton with custom ConnectWallet component in Navbar.
Build Configuration tsconfig.app.tsbuildinfo	Updated build metadata root array to include new source files and paths.

Sequence Diagram

sequenceDiagram
    participant User as User
    participant ConnectWallet as ConnectWallet Component
    participant Wagmi as Wagmi Hook
    participant Wallet as Browser Wallet
    participant Chain as Chain Switcher

    rect rgb(220, 240, 255)
    Note over User,Wallet: Wallet Connection Phase
    User->>ConnectWallet: Select wallet from list
    ConnectWallet->>Wagmi: useConnect()
    Wagmi->>Wallet: Trigger wallet connection
    Wallet-->>Wagmi: User approves connection
    Wagmi-->>ConnectWallet: Connection established
    ConnectWallet->>ConnectWallet: Fetch balance & display account
    end

    rect rgb(240, 220, 255)
    Note over User,Chain: Chain Switching Phase
    User->>ConnectWallet: Open chain selector
    ConnectWallet->>ConnectWallet: Show allChains dropdown
    User->>ConnectWallet: Select new chain
    ConnectWallet->>Wagmi: useSwitchChain()
    Wagmi->>Wallet: Request chain switch
    Wallet-->>Wagmi: Chain switched
    Wagmi-->>ConnectWallet: Update active chain
    ConnectWallet->>ConnectWallet: Refresh UI with new chain
    end

    rect rgb(240, 255, 240)
    Note over User,ConnectWallet: Account Management Phase
    User->>ConnectWallet: Account menu (copy, view, disconnect)
    ConnectWallet->>ConnectWallet: Execute action
    ConnectWallet-->>User: Address copied / Explorer opened / Disconnected
    end

Loading

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~45 minutes

• src/components/ConnectWallet.tsx: Substantial new component with complex state management (wallet selection modal, chain switcher popover, account menu), balance fetching, address formatting, and external-click/Escape key handling—requires careful review of interaction flows and edge cases.
• src/config/wagmi.ts: New configuration module defining chain list, transports, and connector setup; verify correctness of chain IDs, HTTP RPC endpoints, and connector configuration.
• src/App.tsx: Significant changes removing RainbowKit infrastructure and introducing wagmi integration; verify QueryClient configuration (staleTime, retry settings) is appropriate and no initialization issues arise.
• Dependency updates in package.json: Confirm viem ^2.21.0 and wagmi ^2.12.0 are compatible with the new component and configuration logic.

Possibly related issues

• Integrate Alternative Wallet Connectors (e.g., RainbowKit) to Decouple from ReOwn #19: Changes directly implement the removal of WalletConnect/ReOwn SDK dependency by replacing RainbowKit with direct wagmi connectors (injected and Coinbase Wallet), fulfilling the core objective to decouple from ReOwn-based wallet integration.

Poem

🐰 No more ReOwn chains holding us tight,
Direct wallets hop free through the night,
Wagmi whispers, no middlemen in sight,
Decentralized dreams burning bright—
Bunny hops cheering this radical flight! 🌙

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title directly and accurately summarizes the main change: replacing WalletConnect/ReOwn-based wallet integration with a decentralized wallet connection implementation using Wagmi, which aligns perfectly with the changeset across all modified files.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

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Actionable comments posted: 4

🧹 Nitpick comments (7)

src/Navbar.tsx (1)

3-3: Prefer isConnected over address for gating UI.
Using Account.isConnected reads clearer and avoids edge cases where address is temporarily falsy during reconnect.

Also applies to: 70-81, 83-89

src/components/ConnectWallet.tsx (5)

44-49: Harden formatBalance against NaN input.
parseFloat can yield NaN (unexpected formatted strings); consider a Number.isFinite guard and a safe fallback.

---

113-122: Don’t close the connect modal until the connection succeeds (preserve errors / pending state).
Right now setIsModalOpen(false) runs immediately after connect(...), which hides errors and the pending spinner UX. Close only after success.

Also applies to: 155-206

---

137-141: Handle clipboard failures (and await the promise).
navigator.clipboard.writeText(...) can throw/reject (permissions, non-HTTPS). Consider await + try/catch and user feedback.

---

154-215: Modal accessibility: add dialog semantics + focus handling.
Consider role="dialog", aria-modal="true", aria-labelledby, initial focus, and focus trap/return-focus on close.

---

129-135: Handle switchChain errors / unsupported chains (and reflect pending).
switchChain can fail (connector limitations, user rejection). Consider showing errors and disabling the menu during pending.

Also applies to: 240-265

src/config/wagmi.ts (1)

73-76: Coinbase appLogoUrl may need an absolute URL.
Some wallets expect a fully-qualified URL rather than a relative path. Consider using a config value derived from window.location.origin (or document this expectation).

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between b816112 and 834f928.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (7)

• README.md (3 hunks)
• package.json (1 hunks)
• src/App.tsx (1 hunks)
• src/Navbar.tsx (2 hunks)
• src/components/ConnectWallet.tsx (1 hunks)
• src/config/wagmi.ts (1 hunks)
• tsconfig.app.tsbuildinfo (1 hunks)

🧰 Additional context used

🧬 Code graph analysis (4)

src/config/wagmi.ts (1)

src/CitreaTestnet.ts (1)

• citreaTestnet (3-13)

src/components/ConnectWallet.tsx (2)

src/config/wagmi.ts (1)

• allChains (84-84)

src/CitreaTestnet.ts (1)

• citreaTestnet (3-13)

src/Navbar.tsx (1)

src/components/ConnectWallet.tsx (1)

• ConnectWallet (58-329)

src/App.tsx (1)

src/config/wagmi.ts (1)

• wagmiConfig (65-81)

🔇 Additional comments (5)

src/App.tsx (2)

27-35: QueryClient defaults look reasonable.
staleTime + limited retries should reduce noisy refetching.

---

39-41: No action needed—WagmiProvider/QueryClientProvider nesting is correct.
The current setup with WagmiProvider wrapping QueryClientProvider matches wagmi v2.12.0 requirements.

package.json (1)

35-36: The versions are compatible: wagmi v2.12.0 requires viem@2.x as a peer dependency, and viem@2.21.0 satisfies that constraint. Caret ranges are acceptable here and align with standard npm practices for peer dependencies. No evidence suggests tighter pinning is required for this pair.

src/components/ConnectWallet.tsx (1)

74-80: No action needed. wagmi v2.12.0 automatically disables the useBalance query when address is undefined, preventing any errors or unnecessary work. The code is already safe without an explicit enabled guard.

src/config/wagmi.ts (1)

23-45: All wagmi chain exports are available in wagmi@2.12.0—no build-time failures expected.

Verified that chains.polygonMumbai, chains.fantomTestnet, chains.zkSync, chains.linea, and chains.scroll are all properly exported from wagmi/chains. The import pattern (import * as chains from "wagmi/chains") is correct for wagmi v2.