feat: 手机号 + 验证码登录

IosClientKit/Sources/FeatureAuth/AuthViewModel.swift

@@ -0,0 +1,65 @@
+import CoreDomain
+import Foundation
+import Observation
+
+@MainActor
+@Observable
+public final class AuthViewModel {
+    public var isSendingCode = false
+    public var countdownSeconds = 0
+    public var isSubmitting = false
+    public var errorMessage: String?
+    public var didLogin = false
+
+    private let sessionUseCase: SessionUseCase
+    private var countdownTask: Task<Void, Never>?
+
+    public init(sessionUseCase: SessionUseCase) {
+        self.sessionUseCase = sessionUseCase
+    }
+
+    public func requestSmsCode(phone: String) {
+        guard !isSendingCode, countdownSeconds == 0 else { return }
+        isSendingCode = true
+        errorMessage = nil
+        Task { [weak self] in
+            guard let self else { return }
+            do {
+                try await self.sessionUseCase.requestSmsCode(phone: phone)
+                self.startCountdown()
+            } catch {
+                self.errorMessage = (error as? LocalizedError)?.errorDescription ?? error.localizedDescription
+            }
+            self.isSendingCode = false
+        }
+    }
+
+    public func login(phone: String, code: String) {
+        guard !isSubmitting else { return }
+        isSubmitting = true
+        errorMessage = nil
+        Task { [weak self] in
+            guard let self else { return }
+            do {
+                try await self.sessionUseCase.login(phone: phone, code: code)
+                self.didLogin = true
+            } catch {
+                self.errorMessage = (error as? LocalizedError)?.errorDescription ?? error.localizedDescription
+            }
+            self.isSubmitting = false
+        }
+    }
+
+    private func startCountdown() {
+        countdownTask?.cancel()
+        countdownSeconds = 60
+        countdownTask = Task { [weak self] in
+            guard let self else { return }
+            while self.countdownSeconds > 0 {
+                try? await Task.sleep(for: .seconds(1))
+                guard !Task.isCancelled else { return }
+                self.countdownSeconds -= 1
+            }
+        }
+    }
+}