feat:Adapter,VulcanDex (#1386)

src/adapters/vulcandex/index.ts

@@ -0,0 +1,10 @@
+import type { Adapter } from '@lib/adapter'
+
+import * as polygon from './polygon'
+
+const adapter: Adapter = {
+  id: 'vulcandex',
+  polygon: polygon,
+}
+
+export default adapter

src/adapters/vulcandex/polygon/index.ts

@@ -0,0 +1,38 @@
+import type { AdapterConfig, BaseContext, GetBalancesHandler } from '@lib/adapter'
+import { resolveBalances } from '@lib/balance'
+import { getPairsContracts } from '@lib/uniswap/v2/factory'
+import { getPairsBalances } from '@lib/uniswap/v2/pair'
+
+export const getContracts = async (ctx: BaseContext, props: any) => {
+  const offset = props.pairOffset || 0
+  const limit = 100
+
+  const { pairs, allPairsLength } = await getPairsContracts({
+    ctx,
+    factoryAddress: '0x293f45b6f9751316672da58ae87447d712af85d7',
+    offset,
+    limit,
+  })
+
+  return {
+    contracts: { pairs },
+    revalidate: 60 * 60,
+    revalidateProps: {
+      pairOffset: Math.min(offset + limit, allPairsLength),
+    },
+  }
+}
+
+export const getBalances: GetBalancesHandler<typeof getContracts> = async (ctx, contracts) => {
+  const balances = await resolveBalances<typeof getContracts>(ctx, contracts, {
+    pairs: getPairsBalances,
+  })
+
+  return {
+    groups: [{ balances }],
+  }
+}
+
+export const config: AdapterConfig = {
+  startDate: 1710806400,
+}