Add DAS name lookup #3284
Vladyslav Shepitko
3 years ago
committed by
Hwee-Boon Yar
parent
62c4c87369
commit
5bd15e0bab
@ -0,0 +1,78 @@ |
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// |
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// DASLookupRequest.swift |
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// AlphaWallet |
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// |
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// Created by Vladyslav Shepitko on 08.10.2021. |
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// |
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import JSONRPCKit |
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import Foundation |
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struct DASLookupRequest: JSONRPCKit.Request { |
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typealias Response = DASLookupResponse |
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let value: String |
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var method: String { |
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return "das_searchAccount" |
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} |
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var parameters: Any? { |
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return [value] |
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} |
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func response(from resultObject: Any) throws -> Response { |
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guard let data = try? JSONSerialization.data(withJSONObject: resultObject, options: []) else { |
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throw CastError(actualValue: resultObject, expectedType: Response.self) |
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} |
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if let data = try? JSONDecoder().decode(DASLookupResponse.self, from: data) { |
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return data |
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} else { |
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throw CastError(actualValue: resultObject, expectedType: Response.self) |
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} |
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} |
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} |
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struct DASLookupResponse: Decodable { |
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enum CodingKeys: String, CodingKey { |
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case errno, errmsg, data |
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} |
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let errno: Int |
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let errmsg: String |
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let records: [Record] |
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init(from decoder: Decoder) throws { |
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let container = try decoder.container(keyedBy: CodingKeys.self) |
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errno = try container.decode(Int.self, forKey: .errno) |
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errmsg = try container.decode(String.self, forKey: .errmsg) |
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if let value = try? container.decodeIfPresent(DataClass.self, forKey: .data) { |
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records = value?.accountData.records ?? [] |
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} else { |
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records = [] |
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} |
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} |
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struct DataClass: Decodable { |
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let accountData: AccountData |
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enum CodingKeys: String, CodingKey { |
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case accountData = "account_data" |
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} |
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} |
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struct AccountData: Decodable { |
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enum CodingKeys: String, CodingKey { |
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case records |
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} |
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let records: [Record] |
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} |
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struct Record: Decodable { |
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enum CodingKeys: String, CodingKey { |
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case key, label, value, ttl |
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} |
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let key: String |
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let label: String |
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let value: String |
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let ttl: String |
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} |
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} |
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@ -0,0 +1,37 @@ |
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// |
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// DASNameLookupCoordinator.swift |
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// AlphaWallet |
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// |
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// Created by Vladyslav Shepitko on 08.10.2021. |
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// |
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import JSONRPCKit |
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import APIKit |
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import PromiseKit |
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public final class DASNameLookupCoordinator { |
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enum DASNameLookupError: Error { |
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case ethRecordNotFound |
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case invalidInput |
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} |
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private static let ethAddressKey = "address.eth" |
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static func isValid(value: String) -> Bool { |
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return value.trimmed.hasSuffix(".bit") |
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} |
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func resolve(rpcURL: URL, value: String) -> Promise<AlphaWallet.Address> { |
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guard DASNameLookupCoordinator.isValid(value: value) else { |
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return .init(error: DASNameLookupError.invalidInput) |
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} |
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let request = EtherServiceRequest(rpcURL: rpcURL, batch: BatchFactory().create(DASLookupRequest(value: value))) |
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return Session.send(request).map { response -> AlphaWallet.Address in |
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if let record = response.records.first(where: { $0.key == DASNameLookupCoordinator.ethAddressKey }), let address = AlphaWallet.Address(string: record.value) { |
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return address |
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} |
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throw DASNameLookupError.ethRecordNotFound |
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} |
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} |
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} |
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