feat(data): Soroban RPC service layer, price feeds, and TVL/APY hooks#66
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…ooks - Add services/rpc.ts: singleton Soroban JSON-RPC client using native fetch, reads NEXT_PUBLIC_SOROBAN_RPC_URL env var - Add services/prices.ts: fetches XLM and EURC prices from Stellar Horizon DEX order book with 60s in-memory cache; exports fetchAssetPrices() and useAssetPrices() hook - Add hooks/usePosition.ts: reads user position (shares, principal, accruedYield, lockUntil) per vault tier with loading/error states - Add hooks/useAllocations.ts: reads AMM pool allocations from StrategyVault contract with 30s polling - Add hooks/useTVL.ts: aggregates per-tier TVL by reading total_shares from each vault and reversing the share multiplier (Flex=1.00x, L3=1.05x, L6=1.15x, L12=1.35x) - Add hooks/useAPY.ts: calculates trailing 7d and 30d APY from Harvester contract events, annualised - Add components/StatsBar.tsx: client component wiring useTVL and useAPY into a live stats bar - Update app/page.tsx: replace static placeholder with StatsBar showing live TVL, vault count, and best 7d APY
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wumibals
approved these changes
Jun 25, 2026
wumibals
approved these changes
Jun 25, 2026
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Summary
Builds the data service layer connecting the frontend to live on-chain Soroban data, unblocking the dashboard, deposit, and analytics pages.
New files
services/rpc.ts - Soroban JSON-RPC client using native fetch; reads NEXT_PUBLIC_SOROBAN_RPC_URL env var
services/prices.ts - Fetches XLM and EURC prices from Stellar Horizon DEX order book API; 60s in-memory cache; exports fetchAssetPrices() and useAssetPrices() hook
hooks/usePosition.ts - Reads user shares, principal, accrued yield, and lock expiry per vault tier
hooks/useAllocations.ts - Reads AMM pool allocations from StrategyVault contract; polls every 30s
hooks/useTVL.ts - Reads total_shares from each vault and reverses the share multiplier (Flex 1.00x, L3 1.05x, L6 1.15x, L12 1.35x) to produce per-tier and aggregate TVL in USDC
hooks/useAPY.ts - Fetches harvest events from Harvester contract, sums yield over trailing 7d and 30d windows, annualises
components/StatsBar.tsx - Client component wiring useTVL and useAPY into a live stats bar
Updated files
app/page.tsx - Replaces the static placeholder with StatsBar showing live TVL, vault count, and best 7d APY
Notes
closes #44