PR #290 MERGED: Server-Side History Filtering & Pagination in Steemit Wallet (Next.js)

Hello community and fellow developers,

Great news! PR #290 has been merged into the Next.js version of the Steemit Wallet:
🔗 https://github.com/steemit/wallet/pull/290

This milestone delivers production-ready, server-optimized history query pipeline—reducing payload sizes, simplifying client logic, and improving scroll performance for wallet users worldwide.

Architecture overview: Server handles op-type filtering, batching & cursor pagination - Thanks ChatGPT

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On Surface of PR 290

✅ Server-Side Op-Type Filtering (/api/query/history)

• ops parameter active: Filter history by operation types (transfer, vote, comment, etc.) at the API layer—reducing client payload by up to 70% for focused views.
• Smart batching: BATCH_SIZE and MAX_BATCHES safeguards prevent resource exhaustion while maintaining responsive infinite scroll.
• Cursor pagination: nextFrom/exhausted metadata enables efficient, offset-free navigation through account history.
• Redis resilience: Automatic fallback to cached history during node latency spikes ensures consistent UX.

✅ Streamlined Client Hooks

• apiClient.getHistory: Now returns pre-filtered, normalized SteemHistoryItem[] with server-provided pagination state.
• Hooks refactored:
  • use-batch-history.ts
  • use-rewards-history.ts
  • use-activity-history.ts
    All consume server-processed data—eliminating redundant client filtering and reducing re-renders.
• Cleaner codebase: Legacy client-side filters marked @deprecated; migration path documented in-code.

✅ Centralized Operation Constants (src/lib/steem/history-ops.ts)

export const WALLET_OPS = ['transfer', 'transfer_to_vesting', 'withdraw_vesting', ...];
export const ACTIVITY_OPS = ['comment', 'vote', 'reblog', ...];
export const REWARD_OPS = ['author_reward', 'curation_reward', ...];

• Single source of truth for op-type filtering across client/server.
• normalizeHistoryItem() and cache-key utilities ensure consistent data shaping.

✅ Enhanced Security & Coverage

• Redux DevTools sanitization: Extended to redact sensitive fields (auth_key, posting_key) in history payloads—continuing the security-first approach from PR #282.
• Test suite expanded: Coverage for server filtering logic, cursor edge cases, Redis fallbacks, and hook integration.

✅ UI Polish

• Removed unused icons from recent-activity components.
• Snapshot tests updated; zero visual regressions.

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🔄 For Developers: Quick Integration Note

Existing components continue to work unchanged. To leverage server filtering:

// Before: client-side filtering
const { data } = useActivityHistory({ account, types: ['transfer'] });

// After: server-side filtering (more efficient)
const { data, nextFrom, exhausted } = useActivityHistory({ 
  account, 
  ops: ['transfer'], 
  nextFrom, 
  exhausted 
});

No breaking changes—opt-in enhancement only.

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✅ Validation Complete

• [x] All tests passing (Jest + React Testing Library)
• [x] Server filtering validated against live Steem nodes
• [x] Cursor pagination edge cases covered
• [x] Redis fallback behavior verified
• [x] Redux DevTools sanitization confirmed
• [x] Zero visual/functional regressions in activity/rewards tabs

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📚 Contribution Series Recap

This merge continues a focused series of stability, security, and performance improvements to the Steemit Wallet:

PR	Status	Focus
PR #290	✅ MERGED	Server-side history filtering, pagination, hook refactor
PR #285	🟡 Open	RPC node failover system + accessibility fixes
PR #282	✅ Merged	Redux DevTools credential masking
PR #274	✅ Merged	SSR Redux store isolation fix
Issue #275	🔍 Resolved	Private key exposure audit

Every contribution is designed to harden the wallet's foundation while keeping the developer experience smooth and the user experience fast.

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