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add supply apy. integrate apy's into dashboard
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| const Compound = require("@compound-finance/compound-js"); | ||
| import { VercelRequest, VercelResponse } from "@vercel/node"; | ||
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| const compound = new Compound("http://127.0.0.1:8545", { | ||
| privateKey: | ||
| "0xb8c1b5c1d81f9475fdf2e334517d29f733bdfa40682207571b12fc1142cbf329" | ||
| }); | ||
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| async function calculateApy(asset: string) { | ||
| const srpb = await Compound.eth.read( | ||
| Compound.util.getAddress("c" + asset), | ||
| "function supplyRatePerBlock() returns (uint256)", | ||
| [], | ||
| { provider: compound.provider } | ||
| ); | ||
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| const mantissa = Math.pow(10, 18); | ||
| const blocksPerDay = (60 * 60 * 24) / 13.15; // ~13.15 second block time | ||
| const daysPerYear = 365; | ||
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| const supplyApy = | ||
| (Math.pow((+srpb.toString() / mantissa) * blocksPerDay + 1, daysPerYear) - | ||
| 1) * | ||
| 100; | ||
| return supplyApy; | ||
| } | ||
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|
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| export default async (_: VercelRequest, res: VercelResponse) => { | ||
| const asset = "USDC"; | ||
| const apy = await calculateApy(asset); | ||
| console.log(apy); | ||
| res.json({ | ||
| apy, | ||
| asset | ||
| }); | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| // | ||
| // ApyApi.swift | ||
| // eazy | ||
| // | ||
| // Created by Jann Driessen on 04.07.21. | ||
| // | ||
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| import Foundation | ||
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|
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| import SwiftUI | ||
|
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| enum ApyApiError: Error { | ||
| case unexpected(message: String) | ||
| case missingResponse | ||
| } | ||
|
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| final class ApyApi: ObservableObject { | ||
| @Published var borrowApy: String = "" | ||
| @Published var supplyApy: String = "" | ||
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| func fetch() { | ||
| fetchBorrowApy() | ||
| fetchSupplyApy() | ||
| } | ||
| } | ||
|
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| extension ApyApi { | ||
| private func fetchBorrowApy() { | ||
| let path = "/borrow/apy" | ||
| let requestBuilder = ApiRequestBuilder() | ||
| guard let request = requestBuilder.buildRequest(for: path, method: .get) else { return } | ||
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| let task = URLSession.shared.dataTask(with: request, completionHandler: { data, response, error in | ||
| if let error = error { | ||
| let error = ApyApiError.unexpected(message: error.localizedDescription) | ||
| print(error) | ||
| return | ||
| } | ||
|
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| guard let httpResponse = response as? HTTPURLResponse, | ||
| (200...299).contains(httpResponse.statusCode) else { | ||
| let error = ApyApiError.unexpected(message: "Error with the response - unexpected status code") | ||
| print(error) | ||
| return | ||
| } | ||
|
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| if let data = data, let result = try? JSONDecoder().decode(ApyResponse.self, from: data) { | ||
| DispatchQueue.main.async { | ||
| print(result) | ||
| self.borrowApy = String(format: "%.2f%%", result.apy) | ||
| } | ||
| } | ||
| }) | ||
| task.resume() | ||
| } | ||
| } | ||
|
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| extension ApyApi { | ||
| private func fetchSupplyApy() { | ||
| let path = "/supply/apy" | ||
| let requestBuilder = ApiRequestBuilder() | ||
| guard let request = requestBuilder.buildRequest(for: path, method: .get) else { return } | ||
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| let task = URLSession.shared.dataTask(with: request, completionHandler: { data, response, error in | ||
| if let error = error { | ||
| let error = ApyApiError.unexpected(message: error.localizedDescription) | ||
| print(error) | ||
| return | ||
| } | ||
|
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| guard let httpResponse = response as? HTTPURLResponse, | ||
| (200...299).contains(httpResponse.statusCode) else { | ||
| let error = ApyApiError.unexpected(message: "Error with the response - unexpected status code") | ||
| print(error) | ||
| return | ||
| } | ||
|
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| if let data = data, let result = try? JSONDecoder().decode(ApyResponse.self, from: data) { | ||
| DispatchQueue.main.async { | ||
| print(result) | ||
| self.supplyApy = String(format: "%.2f%%", result.apy) | ||
| } | ||
| } | ||
| }) | ||
| task.resume() | ||
| } | ||
| } | ||
|
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| private struct ApyResponse: Decodable { | ||
| let apy: Double | ||
| let asset: String | ||
| } |
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