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suixinkan/Features/Profile/ViewModels/ProfileViewModel.swift

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+//
+//  ProfileViewModel.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/6/20.
+//
+
+import Foundation
+import Observation
+
+@MainActor
+@Observable
+/// 个人信息页 ViewModel，负责资料加载、编辑状态和提交更新。
+final class ProfileViewModel {
+    var userInfo: UserInfoResponse?
+    var realNameInfo: RealNameInfo?
+    var isLoading = false
+    var isSaving = false
+    var isEditingProfile = false
+    var editingNickname = ""
+
+    var displayNickname: String {
+        nonEmpty(userInfo?.nickname) ?? "未设置昵称"
+    }
+
+    var displayRealName: String {
+        nonEmpty(userInfo?.realName) ?? "--"
+    }
+
+    var displayPhone: String {
+        nonEmpty(userInfo?.phone) ?? "--"
+    }
+
+    var displayAvatarURL: String {
+        nonEmpty(userInfo?.avatar) ?? ""
+    }
+
+    var accountStatusText: String {
+        nonEmpty(userInfo?.statusName) ?? "--"
+    }
+
+    var realNameStatusText: String {
+        guard let realNameInfo else { return "点击去实名认证" }
+        switch realNameInfo.auditStatus {
+        case 2:
+            return "已实名认证"
+        case 3:
+            return "审核不通过"
+        default:
+            return "审核中"
+        }
+    }
+
+    /// 重新加载用户资料和实名认证状态。
+    func reload(api: ProfileAPI) async throws {
+        guard !isLoading else { return }
+        isLoading = true
+        defer { isLoading = false }
+
+        async let user = api.userInfo()
+        async let realName = api.realNameInfo()
+        let result = try await (user, realName)
+
+        userInfo = result.0
+        realNameInfo = result.1.realNameInfo
+    }
+
+    /// 进入昵称编辑状态，并把当前昵称填入编辑框。
+    func beginEditing() {
+        editingNickname = displayNickname == "未设置昵称" ? "" : displayNickname
+        isEditingProfile = true
+    }
+
+    /// 退出昵称编辑状态并清空编辑输入。
+    func cancelEditing() {
+        editingNickname = ""
+        isEditingProfile = false
+    }
+
+    /// 保存昵称修改，并同步更新本地 userInfo。
+    func saveProfile(api: ProfileAPI) async throws {
+        let nextNickname = editingNickname.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !nextNickname.isEmpty else {
+            throw ProfileValidationError.emptyNickname
+        }
+
+        let nicknameChanged = nextNickname != displayNickname
+        guard nicknameChanged else {
+            cancelEditing()
+            return
+        }
+
+        guard !isSaving else { return }
+        isSaving = true
+        defer { isSaving = false }
+
+        try await api.updateUserInfo(nickname: nextNickname)
+        var nextUser = userInfo ?? UserInfoResponse()
+        nextUser = UserInfoResponse(
+            avatar: nextUser.avatar,
+            realName: nextUser.realName,
+            phone: nextUser.phone,
+            nickname: nextNickname,
+            roleName: nextUser.roleName,
+            status: nextUser.status,
+            statusName: nextUser.statusName
+        )
+        userInfo = nextUser
+        cancelEditing()
+    }
+
+    /// 修改用户密码，并校验最小长度。
+    func updatePassword(_ password: String, api: ProfileAPI) async throws {
+        let nextPassword = password.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard nextPassword.count >= 6 else {
+            throw ProfileValidationError.shortPassword
+        }
+
+        guard !isSaving else { return }
+        isSaving = true
+        defer { isSaving = false }
+
+        try await api.updateUserInfo(password: nextPassword)
+    }
+
+    /// 将最新 userInfo 合成为全局 AccountProfile，保留已有 userId 等兜底字段。
+    func accountProfileFallback(_ fallback: AccountProfile?) -> AccountProfile? {
+        guard let userInfo else { return fallback }
+        return AccountProfile(
+            userId: fallback?.userId ?? "",
+            displayName: nonEmpty(userInfo.nickname) ?? nonEmpty(userInfo.realName) ?? fallback?.displayName ?? "未设置昵称",
+            phone: nonEmpty(userInfo.phone) ?? fallback?.phone,
+            avatarURL: nonEmpty(userInfo.avatar) ?? fallback?.avatarURL
+        )
+    }
+
+    /// 去除空白字符后返回非空字符串。
+    private func nonEmpty(_ value: String?) -> String? {
+        let text = value?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        return text.isEmpty ? nil : text
+    }
+}
+
+/// 个人信息页校验错误实体，表示昵称和密码输入不符合要求。
+enum ProfileValidationError: LocalizedError {
+    case emptyNickname
+    case shortPassword
+
+    var errorDescription: String? {
+        switch self {
+        case .emptyNickname:
+            "请输入昵称"
+        case .shortPassword:
+            "密码至少 6 位"
+        }
+    }
+}