88 lines
2.8 KiB
Swift
88 lines
2.8 KiB
Swift
//
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// SettingViewModel.swift
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// suixinkan
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//
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import Foundation
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/// 设置中心 ViewModel，管理版本展示、协议入口和更新标记。
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final class SettingViewModel {
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private let infoDictionary: [String: Any]?
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private let environment: APIEnvironment
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private(set) var latestVersion: VersionResponse?
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private(set) var hasNewVersion = false
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var onStateChange: (() -> Void)?
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init(
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infoDictionary: [String: Any]? = Bundle.main.infoDictionary,
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environment: APIEnvironment = .current
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) {
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self.infoDictionary = infoDictionary
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self.environment = environment
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}
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var appVersion: String {
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AppClientInfo.appVersion(infoDictionary: infoDictionary)
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}
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var appDownloadURL: URL {
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environment.baseURL.appending(path: "h5/app/download")
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}
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/// 静默检查最新版本，失败时保持当前页面状态。
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func checkLatestVersion(api: SettingAPI) async {
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do {
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let response = try await api.checkLatestVersion()
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latestVersion = response
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hasNewVersion = Self.isNewerVersionCode(response.versionCode, than: currentVersionCode(infoDictionary: infoDictionary))
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notifyStateChange()
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} catch is CancellationError {
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return
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} catch {
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latestVersion = nil
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hasNewVersion = false
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notifyStateChange()
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}
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}
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/// 返回指定协议入口的标题和 URL。
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func agreementDestination(for kind: SettingAgreementKind) -> SettingAgreementDestination {
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switch kind {
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case .aboutUs:
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SettingAgreementDestination(
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title: "关于我们",
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url: environment.baseURL.appending(path: "h5/app/about-us")
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)
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case .userAgreement:
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SettingAgreementDestination(
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title: "用户协议",
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url: environment.baseURL.appending(path: "h5/app/user-agreement")
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)
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case .privacyPolicy:
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SettingAgreementDestination(
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title: "隐私政策",
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url: environment.baseURL.appending(path: "h5/app/privacy-policy")
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)
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}
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}
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/// 判断后端版本号是否高于当前构建号。
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nonisolated static func isNewerVersionCode(_ latestVersionCode: Int, than currentVersionCode: Int?) -> Bool {
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guard let currentVersionCode else { return false }
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return latestVersionCode > currentVersionCode
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}
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private func currentVersionCode(infoDictionary: [String: Any]?) -> Int? {
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let build = (infoDictionary?["CFBundleVersion"] as? String)?
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.trimmingCharacters(in: .whitespacesAndNewlines)
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guard let build, !build.isEmpty else { return nil }
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return Int(build)
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}
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private func notifyStateChange() {
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onStateChange?()
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}
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}
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