Alta (DefiLlama#9187)

* Ready for PR

* Refactor

* Refactor

* Refactor

* code refactor

* Update index.js

---------

Co-authored-by: Jeremy Crane <[email protected]>

Author: g1nt0ki

projects/alta-finance/index.js

@@ -0,0 +1,25 @@
+module.exports = {
+  methodology: "Sums the amount of funded real-world assets on ALTA Finance as borrowed. Tokens left in the countract are counted towards tvl",
+}
+
+const config = {
+  polygon: { investments: ['0xcf152E9f60E197A44FAdce961c6B822Dcb6c9dcc'], debts: ['0xE92F580C930dd24aACB38Ab0EA18F6c1dEf31369'], token: '0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174' },
+}
+
+Object.keys(config).forEach(chain => {
+  const { investments, debts, token } = config[chain]
+  module.exports[chain] = {
+    tvl: async (_, _b, _cb, { api, }) => {
+      return api.sumTokens({ owners: investments.concat(debts), tokens: [token] })
+    },
+    borrowed: async (_, _b, _cb, { api, }) => {
+      const nftCount = (await api.multiCall({ abi: 'uint256:_tokenIdCounter', calls: investments, permitFailure: true })).map(i => i ?? 0)
+      const amount = (await api.multiCall({ abi: 'uint256:amountPerNft', calls: investments, permitFailure: true })).map(i => i ?? 0)
+      api.add(token, nftCount.map((v, i) => v * amount[i]))
+
+      const bals = (await api.multiCall({ abi: 'uint256:amount', calls: debts, permitFailure: true })).map(i => i ?? 0)
+      api.add(token, bals)
+      return api.getBalances()
+    },
+  }
+})