ft_watcher: sol swap layer parser

ft_watcher: test: mock tests

ft_watcher: working solana swap layer parser

ft_watcher: fix tests

ft_watcher: fix swap recipients and token balances

ft_watcher: remove unused mock files

ft_watcher: update mock file names

ft_watcher: move getTokenBalance

ft_watcher: clean sol parser

ft_watcher: add batched parseFill

ft_watcher: update names

ft_watcher: minor tweaks

ft_watcher: formatter

ft_watcher: fix tests

ft_watcher: add comment

Signed-off-by: bingyuyap <[email protected]>

common/src/solana.ts

@@ -5,6 +5,7 @@ import {
   MessageV0,
   PublicKeyInitData,
   PublicKey,
+  VersionedTransactionResponse,
 } from '@solana/web3.js';
 import axios from 'axios';
 import { decode } from 'bs58';
@@ -128,3 +129,49 @@ export function parseWormholeSequenceFromLogs(logs: string[]): number | null {
   }
   return null;
 }
+
+export function blockTimeToDate(blockTime: number) {
+  return new Date(blockTime * 1000);
+}
+
+/**
+ * Calculates the change in token balance for a specified token within an associated token account
+ * owned by a given owner. If the tokenBalance is not found, an amount of 0n is to be assumed
+ *
+ * @param transaction - The transaction object, which contains metadata and details about pre and post
+ * transaction states, including token balances.
+ * @param owner - The public key of the owner of the associated token account whose token balance
+ * change is to be calculated.
+ * @param mint - The mint address of the specific token for which the balance change is to be calculated.
+ *
+ * @returns The difference between the token balance after the transaction (`postTokenBalance`) and
+ * the token balance before the transaction (`preTokenBalance`). This value is returned as a `BigInt`
+ * and represents the change in token balance for the specified owner and token.
+ */
+export function getTokenBalanceChange(
+  transaction: VersionedTransactionResponse,
+  owner: string,
+  mint: string
+) {
+  const preTokenBalances = transaction.meta?.preTokenBalances || [];
+  const postTokenBalances = transaction.meta?.postTokenBalances || [];
+
+  const preTokenBalance = preTokenBalances.find((tb) => tb.mint === mint && tb.owner === owner) || {
+    uiTokenAmount: {
+      amount: 0n,
+    },
+  };
+
+  const postTokenBalance = postTokenBalances.find(
+    (tb) => tb.mint === mint && tb.owner === owner
+  ) || {
+    uiTokenAmount: {
+      amount: 0n,
+    },
+  };
+
+  const change =
+    BigInt(postTokenBalance.uiTokenAmount.amount) - BigInt(preTokenBalance.uiTokenAmount.amount);
+
+  return change;
+}

watcher/jest.config.json

@@ -3,7 +3,7 @@
   "transform": {
     "^.+\\.tsx?$": "ts-jest"
   },
-  "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
+  "testRegex": "(/__tests__/.*|/tests/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
   "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"],
   "setupFiles": ["./setup-jest.ts"],
   "testPathIgnorePatterns": ["sdk", "/node_modules/", "/dist/"]

watcher/mock/api.devnet.solana.com/parsedAccountInfo_Uku7YHVYicxWEnM7WNvAHGB1yw1dBCGzKXVanC4TxRK.json

@@ -0,0 +1,32 @@
+{
+  "context": {
+    "apiVersion": "1.18.15",
+    "slot": 2860
+  },
+  "value": {
+    "data": {
+      "parsed": {
+        "info": {
+          "isNative": false,
+          "mint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
+          "owner": "HRTQAZJF7YNogjDUehhVShJxtFdBr8gNWsVJbvL1kvXU",
+          "state": "initialized",
+          "tokenAmount": {
+            "amount": "6900000000",
+            "decimals": 6,
+            "uiAmount": 6900,
+            "uiAmountString": "6900"
+          }
+        },
+        "type": "account"
+      },
+      "program": "spl-token",
+      "space": 165
+    },
+    "executable": false,
+    "lamports": 2039280,
+    "owner": "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA",
+    "rentEpoch": 18446744073709552000,
+    "space": 165
+  }
+}