Add coingeko price provider

Packages/KeyAppKit/Sources/KeyAppBusiness/Ethereum/EthereumAccountsService.swift

@@ -9,7 +9,7 @@ public final class EthereumAccountsService: NSObject, AccountsService {
 
     // MARK: - Service
 
-    let priceService: JupiterPriceService
+    let priceService: CoingeckoEthereumPriceService
 
     let errorObservable: ErrorObserver
 
@@ -38,7 +38,7 @@ public final class EthereumAccountsService: NSObject, AccountsService {
         address: String,
         web3: Web3,
         ethereumTokenRepository: EthereumTokensRepository,
-        priceService: JupiterPriceService,
+        priceService: CoingeckoEthereumPriceService,
         fiat: String,
         errorObservable: any ErrorObserver,
         enable: Bool

Packages/KeyAppKit/Sources/KeyAppBusiness/Price/CoingeckoPriceService.swift

@@ -0,0 +1,155 @@
+import Combine
+import Foundation
+import KeyAppKitCore
+
+public class CoingeckoEthereumPriceService: PriceService {
+    static let wETH = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
+
+    /// Data structure for caching
+    enum TokenPriceRecord: Codable, Hashable {
+        case requested(TokenPrice?)
+    }
+
+    enum Error: Swift.Error {
+        case invalidURL
+    }
+
+    let endpoint: String
+
+    let database: LifetimeDatabase<String, TokenPriceRecord>
+
+    public init(endpoint: String) {
+        self.endpoint = endpoint
+        database = .init(
+            filePath: "ethereum-token-price",
+            storage: ApplicationFileStorage(),
+            autoFlush: false,
+            defaultLifetime: 60 * 5
+        )
+    }
+
+    public let onChangePublisher: AnyPublisher<Void, Never> = PassthroughSubject<Void, Never>().eraseToAnyPublisher()
+
+    public func getPrice(token: AnyToken, fiat: String, options: PriceServiceOptions) async throws -> TokenPrice? {
+        try await getPrices(tokens: [token], fiat: fiat, options: options).first?.value
+    }
+
+    public func getPrices(
+        tokens: [AnyToken],
+        fiat: String,
+        options: PriceServiceOptions
+    ) async throws -> [SomeToken: TokenPrice] {
+        let fiat = fiat.lowercased()
+        if tokens.isEmpty {
+            return [:]
+        }
+
+        var result: [SomeToken: TokenPriceRecord] = [:]
+
+        // Get value from local storage
+        for token in tokens {
+            result[token.asSomeToken] = try? await database.read(for: token.id)
+        }
+
+        // Filter missing token price
+        var missingPriceTokenMints: [AnyToken] = []
+        for token in tokens {
+            let token = token.asSomeToken
+
+            if options.contains(.actualPrice) {
+                // Fetch all prices when actual price is requested.
+                missingPriceTokenMints.append(token)
+            } else {
+                // Fetch only price, that does not exists in cache.
+                if result[token] == nil {
+                    missingPriceTokenMints.append(token)
+                }
+            }
+        }
+
+        if !missingPriceTokenMints.isEmpty {
+            // Request missing prices
+            let newPrices = try await fetchTokenPrice(tokens: missingPriceTokenMints, fiat: fiat)
+
+            // Process missing token prices
+            for token in missingPriceTokenMints {
+                let token = token.asSomeToken
+
+                let price = newPrices[token]
+
+                if let price {
+                    let record = TokenPriceRecord.requested(price)
+
+                    result[token] = record
+                    try? await database.write(for: token.id, value: record)
+                } else {
+                    let record = TokenPriceRecord.requested(nil)
+
+                    result[token] = record
+                    try? await database.write(for: token.id, value: record)
+                }
+            }
+
+            try? await database.flush()
+        }
+
+        // Transform values of TokenPriceRecord? to TokenPrice?
+        return result
+            .compactMapValues { record in
+                switch record {
+                case let .requested(value):
+                    return value
+                }
+            }
+    }
+
+    func fetchTokenPrice(tokens: [AnyToken], fiat: String) async throws -> [SomeToken: TokenPrice] {
+        let contractAddresses = tokens.map(\.primaryKey).map { key in
+            switch key {
+            case .native:
+                return Self.wETH
+            case let .contract(address):
+                return address
+            }
+        }
+        .joined(separator: ",")
+
+        guard let url =
+            URL(
+                string: "\(endpoint)/api/v3/simple/token_price/ethereum?contract_addresses=\(contractAddresses)&vs_currencies=\(fiat.lowercased())"
+            )
+        else {
+            throw Error.invalidURL
+        }
+
+        let request = URLRequest(url: url)
+
+        let (data, _) = try await URLSession.shared.data(for: request)
+        let priceResult = try JSONDecoder().decode(
+            [String: [String: Double]].self,
+            from: data
+        )
+
+        var priceData: [SomeToken: TokenPrice] = [:]
+        for token in tokens {
+            let token = token.asSomeToken
+
+            let value: Double?
+            if token.primaryKey == .native {
+                value = priceResult[Self.wETH]?[fiat]
+            } else {
+                value = priceResult[token.primaryKey.id]?[fiat]
+            }
+
+            if let value {
+                priceData[token] = TokenPrice(currencyCode: fiat, value: .init(floatLiteral: value), token: token)
+            } else {
+                priceData[token] = TokenPrice(currencyCode: fiat, value: nil, token: token)
+            }
+        }
+
+        return priceData
+    }
+
+    public func clear() async throws {}
+}

p2p_wallet/Injection/Resolver+registerAllServices.swift

@@ -158,6 +158,11 @@ extension Resolver: ResolverRegistering {
         .implements(PriceService.self)
         .scope(.application)
 
+        register {
+            CoingeckoEthereumPriceService(endpoint: "https://api.coingecko.com")
+        }
+        .scope(.application)
+
         // Prices
         register {
             JupiterPriceServiceImpl(client: HTTPClient(