MOB-1933 Fetch gas prices from Infura (#471)

* initted * refactoring * refact * Update CryptoSenderProtocol.swift * added hash property into description * rm StoredTx * create TX also extracting JRPC methods * refactor protocol * extracting sendTx from WC2 * extracted fetchGasLimit() * added working demo with Sepolia * factor in amount and chain env * fixed amount computation * helper init * check support of native tokens * take use of default gas price * added TxSpeed, top-level CryptoSender * computeGasFeeFrom() finalyzed * refactoring * refact * refactor * support ext wallets * transferring chain to ext wallet * ext wallet fix * fetching range of gas prices * Update navigation title * Will use domain name for wallet on receiver selection screen if available * new enum SupportedToken * default body nil * removed double-checking * removed repeated code * refactored computeGasPrice() * computed gas fee in token units (Double) * use speed-based gas price * Fixed preview target * Implemented use max crypto to send calculations. Updated show pull up logic * Filter tokens by can send * Refactoring * Created bridge functions to send crypto in view model * Added ui entity for transaction speed * Fetch gas fee and display on the UI. * Updated gas fee price formatting * Updated token formatting and saved value * Refactoring * Restore limited scope of requested porfolio data * Remove speed estimation in sec from UI * Run refresh gas timer * Submit send crypto * introduced EVMTokenAmount, extra helper method fetchGasPrices() * fix: Eth Tx is build with WEIs only * refactoring * Update gas fee and prices calculations * renaming (#452) * Fix merging issue * Gas fee and gas prices refactoring * Fixed gas prices preserved and refactoring * Handle send all tokens * Check for user's fund is enough to cover gas before sending. * Force refresh wallet update * Add biometric verification to confirm send transaction. * Updated using max button title * Added crypto views lifecycle analytic events * Fixed typo * Added analytic events for scan qr code and select receiver views * Added analytics to asset selection and token input views * Added analytics to transfer domain view * Added analytics to send crypto view * Added analytics to success screen * Log send asset error * Refactoring * Refactoring * Updated and localized tx list items * Adjust UI for long values in tx list * Fixed targets * Extend tx id * Updated tx icons ui * bump version to 5.3.0(1) * added fetchInfuraGasPrices() * refactoring * rm auth key --------- Co-authored-by: Oleg <oleg@unstoppabledomains.com>
unstoppabledomains · Apr 3, 2024 · c72efae · c72efae
1 parent a2c775b
commit c72efae
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Showing 2 changed files with 41 additions and 7 deletions.
diff --git a/...-ios-app/domains-manager-ios/Modules/Home/SendCryptoAsset/CryptoSender/CryptoSender.swift b/...-ios-app/domains-manager-ios/Modules/Home/SendCryptoAsset/CryptoSender/CryptoSender.swift
@@ -96,9 +96,9 @@ struct NativeCryptoSender: CryptoSenderProtocol {
     }
 
     func fetchGasPrices(on chain: ChainSpec) async throws -> EstimatedGasPrices {
-        try await NetworkService().getStatusGasPrices(chainId: chain.id)
+        try await fetchGasPrices(chainId: chain.id)
     }
-
+        
     // Private methods
 
     private func createNativeSendTransaction(crypto: CryptoSendingSpec,
@@ -107,8 +107,7 @@ struct NativeCryptoSender: CryptoSenderProtocol {
                                              chainId: Int) async throws -> EthereumTransaction {
         let nonce: EthereumQuantity = try await JRPC_Client.instance.fetchNonce(address: fromAddress,
                                                                                 chainId: chainId)
-        let speedBasedGasPrice = try await NetworkService().fetchGasPrice(chainId: chainId,
-                                                                         for: crypto.speed)
+        let speedBasedGasPrice = try await fetchGasPrice(chainId: chainId, for: crypto.speed)
 
         let sender = EthereumAddress(hexString: fromAddress)
         let receiver = EthereumAddress(hexString: toAddress)
@@ -126,4 +125,14 @@ struct NativeCryptoSender: CryptoSenderProtocol {
         }
         return transaction
     }
+
+    private func fetchGasPrice(chainId: Int, for speed: CryptoSendingSpec.TxSpeed) async throws -> EVMTokenAmount {
+        let prices: EstimatedGasPrices = try await fetchGasPrices(chainId: chainId)
+        return prices.getPriceForSpeed(speed)
+    }
+
+    private func fetchGasPrices(chainId: Int) async throws -> EstimatedGasPrices {
+        // here routes to Status or Infura source
+        try await NetworkService().fetchInfuraGasPrices(chainId: chainId)
+    }
 }
diff --git a/unstoppable-ios-app/domains-manager-ios/Services/Networking/NetworkService.swift b/unstoppable-ios-app/domains-manager-ios/Services/Networking/NetworkService.swift
@@ -316,6 +316,7 @@ extension NetworkService {
         case genericError(String)
         case failedGetStatus
         case failedParseStatusPrices
+        case failedParseInfuraPrices
         case unknownChain
 
         init(message: String) {
@@ -385,9 +386,33 @@ extension NetworkService {
         return ["ETH": ethPrices, "MATIC": maticPrices]
     }
 
-    func fetchGasPrice(chainId: Int, for speed: CryptoSendingSpec.TxSpeed) async throws -> EVMTokenAmount {
-        let prices: EstimatedGasPrices = try await getStatusGasPrices(chainId: chainId)
-        return prices.getPriceForSpeed(speed)
+    enum InfuraSpeedCase: String, CaseIterable {
+        case low, medium, high
+    }
+
+    func fetchInfuraGasPrices(chain: ChainSpec) async throws -> EstimatedGasPrices {
+        try await fetchInfuraGasPrices(chainId: chain.id)
+    }
+
+    func fetchInfuraGasPrices(chainId: Int) async throws -> EstimatedGasPrices {
+        let url = URL(string: "https://gas.api.infura.io/networks/\(chainId)/suggestedGasFees")!
+        let data = try await NetworkService().fetchData(for: url, method: .get, extraHeaders: Self.infuraBasicAuthHeader)
+        let jsonInf = try! JSONSerialization.jsonObject(with: data, options: []) as! [String: Any]
+
+        var priceDict: [InfuraSpeedCase: Double] = [:]
+        try Self.InfuraSpeedCase.allCases.forEach {
+            guard let section = jsonInf[$0.rawValue] as? [String: Any],
+                  let priceString = section["suggestedMaxFeePerGas"] as? String,
+                let price = Double(priceString) else {
+                throw JRPCError.failedParseInfuraPrices
+            }
+            priceDict[$0] = price
+        }
+        assert(priceDict.count == Self.InfuraSpeedCase.allCases.count) // always true after forEach
+
+        return EstimatedGasPrices(normal: EVMTokenAmount(gwei: priceDict[InfuraSpeedCase.low]!),
+                                  fast: EVMTokenAmount(gwei: priceDict[InfuraSpeedCase.medium]!),
+                                  urgent: EVMTokenAmount(gwei: priceDict[InfuraSpeedCase.high]!))
     }
 
     func getStatusGasPrices(chainId: Int) async throws -> EstimatedGasPrices {