feat: Implement Comprehensive Stellar Service Layer - #32
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- Add @stellar/stellar-sdk dependencies - Configure Stellar SDK with testnet/mainnet support - Implement wallet generation with Keypair.random() - Add balance checking for XLM and custom assets - Create payment functions with proper transaction handling - Implement Soroban credential issuance and verification - Add comprehensive error handling with StellarServiceError - Write complete unit test suite with mocks - Maintain backward compatibility with existing interface Acceptance Criteria: ✅ Service initializes with correct network (testnet for development) ✅ Wallet generation returns valid Stellar keys ✅ Balance checks return correct amounts ✅ Payment functions create proper transactions ✅ Credential functions interact with Soroban contracts ✅ Errors are caught and wrapped appropriately
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@3m1n3nc3 PR ready |
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Please resolve your conflicts. |
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@3m1n3nc3 conflicts resolved |
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Summary
Implemented a complete Stellar blockchain service layer with full SDK integration, supporting wallet operations, payments, and Soroban smart contract interactions for the learn-to-earn platform.
Changes Made
🔧 Core Implementation
Stellar SDK Integration: Added stellar/stellar-sdk v14.6.1 with proper TypeScript support
Network Configuration: Testnet/mainnet support with configurable RPC endpoints
Service Architecture: Comprehensive StellarService class with all blockchain operations
💳 Wallet Operations
Wallet Generation: generateWallet() creates cryptographically secure keypairs
Testnet Funding: fundTestnetAccount() integrates with Friendbot for easy testing
Balance Checking: getBalances() and getNativeBalance() for account monitoring
💸 Payment System
Payment Functions: sendPaymentWithOptions() handles XLM and custom assets
Account Creation: Automatically creates destination accounts when needed
Transaction Confirmation: Polling mechanism for reliable transaction verification
🎓 Credential System (Soroban)
Credential Issuance: issueCredential() for on-chain credential creation
Credential Verification: verifyCredential() for validating credentials
Smart Contract Integration: Full Soroban contract interaction support
🛡️ Error Handling
Custom Errors: StellarServiceError with specific error codes
Network Resilience: Proper timeout and retry mechanisms
Graceful Failures: Comprehensive error wrapping and logging
🧪 Testing
Unit Tests: Complete test suite in tests/stellar.service.test.ts
Mocked Dependencies: No real network calls during testing
TypeScript Compatibility: Fixed all TypeScript errors in test files
🔄 Backward Compatibility
Legacy Support: Maintained existing interface methods
Migration Path: Clear upgrade path from old implementation
closes #13