93 lines
3.4 KiB
Swift
93 lines
3.4 KiB
Swift
import Foundation
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import CryptoKit
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final class Client {
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// TODO: Use or delete
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private let delegate = NeverCacheDelegate()
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init() {}
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func deviceStatus(authToken: Data, server: String) async -> ClientState {
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await send(path: .getDeviceStatus, server: server, data: authToken).state
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}
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func sendMessageOverLocalNetwork(_ message: Message, server: String) async -> (state: ClientState, response: Message?) {
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let data = message.encoded.hexEncoded
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guard let url = URL(string: server + "message?m=\(data)") else {
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return (.internalError("Invalid server url"), nil)
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}
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var request = URLRequest(url: url)
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request.httpMethod = "POST"
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return await requestAndDecode(request)
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}
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func send(_ message: Message, server: String, authToken: Data) async -> (state: ClientState, response: Message?) {
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let serverMessage = ServerMessage(authToken: authToken, message: message)
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return await send(path: .postMessage, server: server, data: serverMessage.encoded)
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}
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private func send(path: RouteAPI, server: String, data: Data) async -> (state: ClientState, response: Message?) {
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guard let url = URL(string: server) else {
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return (.internalError("Invalid server url"), nil)
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}
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let fullUrl = url.appendingPathComponent(path.rawValue)
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return await send(to: fullUrl, data: data)
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}
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private func send(to url: URL, data: Data) async -> (state: ClientState, response: Message?) {
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var request = URLRequest(url: url)
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request.httpBody = data
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request.httpMethod = "POST"
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return await requestAndDecode(request)
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}
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private func requestAndDecode(_ request: URLRequest) async -> (state: ClientState, response: Message?) {
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guard let data = await fulfill(request) else {
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return (.deviceNotAvailable(.serverNotReached), nil)
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}
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guard let byte = data.first else {
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return (.internalError("Empty response"), nil)
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}
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guard let status = MessageResult(rawValue: byte) else {
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return (.internalError("Invalid message response: \(byte)"), nil)
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}
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let result = ClientState(keyResult: status)
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guard data.count == Message.length + 1 else {
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if data.count != 1 {
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print("Device response with only \(data.count) bytes")
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}
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return (result, nil)
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}
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let messageData = Array(data.advanced(by: 1))
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let message = Message(decodeFrom: messageData)
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return (result, message)
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}
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private func fulfill(_ request: URLRequest) async -> Data? {
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do {
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let (data, response) = try await URLSession.shared.data(for: request)
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guard let code = (response as? HTTPURLResponse)?.statusCode else {
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print("No response from server")
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return nil
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}
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guard code == 200 else {
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print("Invalid server response \(code)")
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return nil
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}
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return data
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} catch {
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print("Request failed: \(error)")
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return nil
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}
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}
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}
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class NeverCacheDelegate: NSObject, NSURLConnectionDataDelegate {
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func connection(_ connection: NSURLConnection, willCacheResponse cachedResponse: CachedURLResponse) -> CachedURLResponse? {
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return nil
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}
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}
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