fix: implement missing blockchain verification methods to resolve run…#65
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HimanshuHeda merged 1 commit intoHimanshuHeda:mainfrom Aug 21, 2025
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HimanshuHeda
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📋 Summary
This PR implements the missing blockchain service methods that were causing runtime errors in the verification UI. The blockchain verification component and context were calling methods that didn't exist, breaking explorer links, history loading, and score updates.
🐛 Problem
Explorer link: Missing getExplorerUrl() method caused link failures
Verification history: Missing getVerificationHistory() prevented history display
Score updates: Missing updateCredibilityScore() blocked score modifications
Verification checks: Missing isNewsVerified() prevented status verification
Verification details: Missing getNewsVerification() blocked detail retrieval
✅ Solution
Implemented all missing methods in BlockchainService class:
getNewsVerification(tokenId) - Retrieves verification details by token ID
getVerificationHistory(tokenId) - Fetches verification history array
isNewsVerified(newsContent) - Checks if content is already verified
updateCredibilityScore(tokenId, newScore) - Updates scores on-chain
getExplorerUrl(txHash) - Generates network-specific explorer links
🔒 Security & UX Improvements
Read-only support: Methods work without wallet connection for viewing
Write protection: Score updates require connected wallet
Network mapping: Correct explorer URLs for Mumbai/Polygon/Ethereum
Error handling: Graceful fallbacks with proper logging
Type safety: Maintained proper TypeScript interfaces
🧪 Testing
✅ TypeScript compilation passes
✅ Build succeeds without errors
✅ All blockchain methods now available and properly typed
✅ Read operations work in read-only mode
✅ Write operations properly gate on wallet connection
📁 Files Changed
src/lib/blockchain.ts - Added 5 missing blockchain methods
🚀 Impact
User Experience: Blockchain verification UI now works end-to-end
Developer Experience: No more runtime errors in blockchain flows
Functionality: Users can view verification details, history, and explorer links
Reliability: Proper error handling and fallbacks implemented
🔍 Code Quality
Comprehensive error handling with try-catch blocks
Proper TypeScript typing maintained
Consistent logging for debugging
Network-aware explorer URL generation
Graceful degradation for missing wallet connections
🏷️ Labels
bug
blockchain
priority: high
type: fix
closes #63