Dune API to fetch total eth staked

.env.example

@@ -16,6 +16,9 @@
 # GOOGLE_API_KEY=
 # GOOGLE_CALENDAR_ID=
 
+# Dune Analytics API key (required for total eth staked)
+# DUNE_API_KEY=
+
 # Matomo environment (URL and site ID required for analytics)
 NEXT_PUBLIC_MATOMO_URL=
 NEXT_PUBLIC_MATOMO_SITE_ID=

src/components/StatsBoxGrid/useStatsBoxGrid.tsx

@@ -96,8 +96,8 @@ export const useStatsBoxGrid = ({
 
   const metrics: StatsBoxMetric[] = [
     {
-      apiProvider: "Beaconcha.in",
-      apiUrl: "https://beaconcha.in/",
+      apiProvider: "Dune Analytics",
+      apiUrl: "https://dune.com/",
       title: t("page-index-network-stats-total-eth-staked"),
       description: t("page-index-network-stats-total-eth-staked-explainer"),
       buttonContainer: (

src/lib/api/fetchTotalEthStaked.ts

@@ -1,73 +1,47 @@
-import type {
-  EthStoreResponse,
-  MetricReturnData,
-  TimestampedData,
-} from "@/lib/types"
+import type { EthStakedResponse, MetricReturnData } from "@/lib/types"
 
-import { weiToRoundedEther } from "@/lib/utils/weiToRoundedEther"
+import { DUNE_API_URL } from "../constants"
 
-import { BEACONCHA_IN_URL, DAYS_TO_FETCH } from "@/lib/constants"
-
-const MS_PER_DAY = 1000 * 60 * 60 * 24
-const DAY_DELTA = 5
+const DUNE_API_KEY = process.env.DUNE_API_KEY
 
 export const fetchTotalEthStaked = async (): Promise<MetricReturnData> => {
-  const { href: ethstoreLatest } = new URL(
-    "api/v1/ethstore/latest",
-    BEACONCHA_IN_URL
+  if (!DUNE_API_KEY) {
+    console.error("Dune API key not found")
+    return { error: "Dune API key not found" }
+  }
+
+  const url = new URL(
+    "api/v1/endpoints/pablop/eth-staked/results",
+    DUNE_API_URL
   )
 
   try {
-    // 1- Use initial call to `latest` to fetch current Beacon Chain "day" (for use in secondary fetches)
-    const ethstoreLatestResponse = await fetch(ethstoreLatest)
-    if (!ethstoreLatestResponse.ok) {
-      console.log(
-        ethstoreLatestResponse.status,
-        ethstoreLatestResponse.statusText
-      )
-      throw new Error("Failed to fetch Ethstore latest data")
+    const ethStakedResponse = await fetch(url, {
+      headers: { "X-Dune-API-Key": DUNE_API_KEY },
+    })
+    if (!ethStakedResponse.ok) {
+      console.log(ethStakedResponse.status, ethStakedResponse.statusText)
+      throw new Error("Failed to fetch eth staked data")
     }
 
-    const ethstoreJson: EthStoreResponse = await ethstoreLatestResponse.json()
+    const ethStakedJson: EthStakedResponse = await ethStakedResponse.json()
     const {
-      data: { day, effective_balances_sum_wei },
-    } = ethstoreJson
-    const valueTotalEth = weiToRoundedEther(effective_balances_sum_wei)
-
-    const data: TimestampedData<number>[] = [
-      { timestamp: new Date().getTime(), value: valueTotalEth },
-    ]
-
-    // 2- Perform multiple API calls to fetch data for the last 90 days, `getData` for caching
-    for (let i = DAY_DELTA; i <= DAYS_TO_FETCH; i += DAY_DELTA) {
-      const lookupDay = day - i
-      const timestamp = new Date().getTime() - i * MS_PER_DAY
+      result: { rows = [] },
+    } = ethStakedJson
 
-      const { href: ethstoreDay } = new URL(
-        `api/v1/ethstore/${lookupDay}`,
-        BEACONCHA_IN_URL
-      )
-
-      const ethstoreDayResponse = await fetch(ethstoreDay)
-      if (!ethstoreDayResponse.ok) {
-        console.log(ethstoreDayResponse.status, ethstoreDayResponse.statusText)
-        throw new Error("Failed to fetch Ethstore day data")
-      }
-
-      const ethstoreDayJson: EthStoreResponse = await ethstoreDayResponse.json()
-      const {
-        data: { effective_balances_sum_wei: sumWei },
-      } = ethstoreDayJson
-      const value = weiToRoundedEther(sumWei)
-
-      data.push({ timestamp, value })
-    }
+    const data = rows.map((row) => ({
+      timestamp: new Date(row.time).getTime(),
+      value: row.cum_deposited_eth,
+    }))
 
+    // data is already sorted...but just in case
     data.sort((a, b) => a.timestamp - b.timestamp)
 
+    const { value } = data[data.length - 1]
+
     return {
-      data, // historical data: { timestamp: unix-milliseconds, value }
-      value: valueTotalEth, // current value (number, unformatted)
+      data,
+      value,
     }
   } catch (error: unknown) {
     console.error((error as Error).message)

src/lib/constants.ts

@@ -74,6 +74,7 @@ export const DAYS_TO_FETCH = 90
 export const RANGES = ["30d", "90d"] as const
 export const BEACONCHA_IN_URL = "https://beaconcha.in/"
 export const ETHERSCAN_API_URL = "https://api.etherscan.io"
+export const DUNE_API_URL = "https://api.dune.com"
 
 // Wallets
 export const NUMBER_OF_SUPPORTED_LANGUAGES_SHOWN = 5
@@ -152,4 +153,4 @@ export const MOBILE_LANGUAGE_BUTTON_NAME = "mobile-language-button"
 export const DESKTOP_LANGUAGE_BUTTON_NAME = "desktop-language-button"
 
 // Codeblock
-export const LINES_BEFORE_COLLAPSABLE = 8
+export const LINES_BEFORE_COLLAPSABLE = 8

src/lib/types.ts

@@ -417,7 +417,7 @@ type HeroButtonProps = Omit<CallToActionProps, "index">
  * or a string. (defaults to `StaticImageData`)
  */
 export type CommonHeroProps<
-  HeroImg extends StaticImageData | string = StaticImageData
+  HeroImg extends StaticImageData | string = StaticImageData,
 > = {
   /**
    * Decorative image displayed as the full background or an aside to
@@ -485,6 +485,15 @@ export type EthStoreResponse = Data<{
   effective_balances_sum_wei: number
 }>
 
+export type EthStakedResponse = {
+  result: {
+    rows?: {
+      cum_deposited_eth: number
+      time: string
+    }[]
+  }
+}
+
 export type EpochResponse = Data<{
   validatorscount: number
 }>