import SwiftUI
import UIKit

/// 设置。iOS 无无障碍/悬浮窗那套权限卡(安卓特有),只保留账户/通用。
struct SettingsView: View {
    @Environment(SessionStore.self) private var session
    @State private var showDeleteConfirm = false
    @State private var deleting = false
    private let service = UserService()

    var body: some View {
        List {
            Section("通用") {
                NavigationLink { AboutView() } label: { Label("关于傻瓜比价", systemImage: "info.circle") }
                NavigationLink { PrivacyPolicyView() } label: { Label("隐私政策", systemImage: "lock.shield") }
                Button {
                    if let url = URL(string: UIApplication.openSettingsURLString) {
                        UIApplication.shared.open(url)
                    }
                } label: {
                    Label("通知设置", systemImage: "bell")
                }
            }

            Section {
                Button(role: .destructive) {
                    showDeleteConfirm = true
                } label: {
                    Text(deleting ? "注销中…" : "注销账号")
                }
                .disabled(deleting)
            } footer: {
                Text("注销后,你的资料、金币、记录将被删除或匿名化,不可恢复。")
            }
        }
        .navigationTitle("设置")
        .navigationBarTitleDisplayMode(.inline)
        .alert("确认注销账号?", isPresented: $showDeleteConfirm) {
            Button("注销", role: .destructive) { Task { await deleteAccount() } }
            Button("取消", role: .cancel) {}
        } message: {
            Text("此操作不可恢复。")
        }
    }

    private func deleteAccount() async {
        deleting = true
        defer { deleting = false }
        _ = try? await service.deleteAccount()
        await session.logout()   // 注销后登出;ProfileView 切回登录引导,导航栈自动重置
    }
}