feat(token-aggregation): add historical pricing context, backfill, and indexer hardening

services/token-aggregation/src/database/repositories/swap-event-repo.ts

@@ -0,0 +1,99 @@
+import { Pool } from 'pg';
+import { getDatabasePool } from '../client';
+
+export interface SwapEventRecord {
+  chainId: number;
+  poolAddress: string;
+  transactionHash: string;
+  blockNumber: number;
+  logIndex: number;
+  token0Address: string;
+  token1Address: string;
+  amount0In: string;
+  amount1In: string;
+  amount0Out: string;
+  amount1Out: string;
+  amountUsd?: number;
+  priceUsd?: number;
+  token0PriceUsd?: number;
+  token1PriceUsd?: number;
+  sender?: string;
+  toAddress?: string;
+  timestamp: Date;
+}
+
+export class SwapEventRepository {
+  private pool: Pool;
+
+  constructor() {
+    this.pool = getDatabasePool();
+  }
+
+  private isMissingRelationError(error: unknown): boolean {
+    if (!error || typeof error !== 'object') {
+      return false;
+    }
+
+    const code = (error as { code?: string }).code;
+    const message = (error as { message?: string }).message || '';
+    return code === '42P01' || (message.includes('relation "') && message.includes('" does not exist'));
+  }
+
+  async upsertSwapEvent(event: SwapEventRecord): Promise<void> {
+    try {
+      await this.pool.query(
+        `INSERT INTO swap_events (
+           chain_id, pool_address, transaction_hash, block_number, log_index,
+           token0_address, token1_address, amount0_in, amount1_in, amount0_out, amount1_out,
+           amount_usd, price_usd, token0_price_usd, token1_price_usd, sender, to_address, timestamp
+         )
+         VALUES (
+           $1, $2, $3, $4, $5,
+           $6, $7, $8, $9, $10, $11,
+           $12, $13, $14, $15, $16, $17, $18
+         )
+         ON CONFLICT (chain_id, transaction_hash, log_index) DO UPDATE SET
+           pool_address = EXCLUDED.pool_address,
+           block_number = EXCLUDED.block_number,
+           token0_address = EXCLUDED.token0_address,
+           token1_address = EXCLUDED.token1_address,
+           amount0_in = EXCLUDED.amount0_in,
+           amount1_in = EXCLUDED.amount1_in,
+           amount0_out = EXCLUDED.amount0_out,
+           amount1_out = EXCLUDED.amount1_out,
+           amount_usd = EXCLUDED.amount_usd,
+           price_usd = EXCLUDED.price_usd,
+           token0_price_usd = EXCLUDED.token0_price_usd,
+           token1_price_usd = EXCLUDED.token1_price_usd,
+           sender = EXCLUDED.sender,
+           to_address = EXCLUDED.to_address,
+           timestamp = EXCLUDED.timestamp`,
+        [
+          event.chainId,
+          event.poolAddress.toLowerCase(),
+          event.transactionHash.toLowerCase(),
+          event.blockNumber,
+          event.logIndex,
+          event.token0Address.toLowerCase(),
+          event.token1Address.toLowerCase(),
+          event.amount0In,
+          event.amount1In,
+          event.amount0Out,
+          event.amount1Out,
+          event.amountUsd,
+          event.priceUsd,
+          event.token0PriceUsd,
+          event.token1PriceUsd,
+          event.sender?.toLowerCase(),
+          event.toAddress?.toLowerCase(),
+          event.timestamp,
+        ]
+      );
+    } catch (error) {
+      if (this.isMissingRelationError(error)) {
+        return;
+      }
+      throw error;
+    }
+  }
+}