Add oxium TVL calculation and refactor code (#15062)

Co-authored-by: maxencerb <dev@maxencerb.com>

Author: g1nt0ki

projects/oxium/index.js

@@ -0,0 +1,85 @@
+
+const { cachedGraphQuery } = require("../helper/cache");
+
+const config = {
+  sei: {
+    reader: "0xfeafb31AC7f09892B50c4d6DA06a1e48D487499E",
+    api_url: "https://indexer-sei.mgvinfra.com/",
+    chainId: 1329,
+  }
+}
+
+const abi = {
+  openMarkets: "function openMarkets() view returns ((address,address,uint256)[])",
+  offerList: "function offerList((address,address,uint256),uint256,uint256) view returns (uint256,uint256[],(uint256,uint256,int256,uint256)[],(address,uint256,uint256,uint256)[])",
+  getUnderlyingBalances: "function getUnderlyingBalances() public view returns (uint256 baseAmount, uint256 quoteAmount)",
+}
+
+
+const query = (chainId) => `
+query DefiLlama {
+	mangroveVaults (where:{chainId:${chainId}}) {
+    items {
+      address
+      baseAddress
+      quoteAddress
+      kandelAddress
+    }
+  }
+}
+`
+
+module.exports = {
+  methodology: "TVL is the total value promised on oxium markets in addition to all non promised value that are in the ALM vaults.",
+  start: "2025-04-25",
+  doublecounted: true,  // tokens are kept in yei vault to get the yield
+}
+
+Object.keys(config).forEach(chain => {
+  const configEntry = config[chain]
+  module.exports[chain] = {
+    tvl: async (api) => {
+
+      // vault tvl
+      const { mangroveVaults: { items } } = await cachedGraphQuery(`oxium-vaults-${configEntry.chainId}`, configEntry.api_url, query(configEntry.chainId))
+      const vaultMakers = new Set()
+      const vaultBals = await api.multiCall({ abi: abi.getUnderlyingBalances, calls: items.map(vault => vault.address) })
+      vaultBals.forEach((bals, i) => {
+        const { baseAddress, quoteAddress, kandelAddress } = items[i]
+        vaultMakers.add(kandelAddress.toLowerCase())
+
+        api.add(baseAddress.toLowerCase(), bals.baseAmount)
+        api.add(quoteAddress.toLowerCase(), bals.quoteAmount)
+      })
+
+
+      // book tvl
+      const openMarkets = await api.call({ target: configEntry.reader, abi: abi.openMarkets, })
+      for (const market of openMarkets) {
+        let currentId = 0
+        const token = market[0]
+        do {
+
+          const [newCurrId, _, offers, offerDetails] = await api.call({
+            target: configEntry.reader,
+            abi: abi.offerList,
+            params: [market, currentId, 100],
+          })
+          offers.forEach((offer, index) => {
+            const maker = offerDetails[index][0].toLowerCase()
+            if (vaultMakers.has(maker)) return // skip vaults
+            const gives = offer[3]
+            api.add(token.toLowerCase(), gives)
+          })
+
+          currentId = +newCurrId
+        } while (currentId !== 0)
+      }
+    }
+  }
+})
+
+
+
+
+