AUSleeping-IOS/AreYouSleeping/Views/SettingsView.swift

import SwiftUI

struct SettingsView: View {
    @EnvironmentObject var store: Store
    @State private var showAgreement = false
    @State private var showStyleSettings = false

    var body: some View {
        NavigationStack {
            Form {
                // MARK: - 控制码
                Section {
                    HStack {
                        VStack(alignment: .leading, spacing: 4) {
                            Text("我的控制码").font(.caption).foregroundColor(.secondary)
                            Text(store.controlCode.isEmpty ? "----" : store.controlCode)
                                .font(.title3).bold().foregroundColor(.blue)
                        }
                        Spacer()
                        if !store.controlCode.isEmpty {
                            ShareLink(item: shareText) {
                                Image(systemName: "square.and.arrow.up")
                            }
                        }
                    }
                    Toggle("启用控制码功能", isOn: $store.controlCodeEnabled)
                        .onChange(of: store.controlCodeEnabled) { _ in store.save() }
                } header: { Text("控制码") }

                // MARK: - 作息
                Section {
                    HStack {
                        Text("目标就寝时间")
                        Spacer()
                        Text(TimeUtil.fmt(store.bedtimeMinutes)).foregroundColor(.blue)
                    }
                    .contentShape(Rectangle())
                    .onTapGesture { pickTime(isBed: true) }

                    HStack {
                        Text("目标起床时间")
                        Spacer()
                        Text(TimeUtil.fmt(store.waketimeMinutes)).foregroundColor(.blue)
                    }
                    .contentShape(Rectangle())
                    .onTapGesture { pickTime(isBed: false) }
                } header: { Text("作息") }

                // MARK: - 提醒
                Section {
                    Toggle("睡前 30 分钟提醒", isOn: $store.bedtimeReminderEnabled)
                        .onChange(of: store.bedtimeReminderEnabled) { _ in
                            store.save()
                            BedtimeReminder.schedule(store: store)
                        }
                } header: { Text("提醒") } footer: {
                    Text("睡觉时间前发送通知提醒你准备休息")
                }

                // MARK: - 监督
                Section {
                    Toggle("监督模式", isOn: $store.supervisionEnabled)
                        .onChange(of: store.supervisionEnabled) { _ in store.save() }
                } header: { Text("监督") } footer: {
                    Text("就寝时段提醒你放下手机")
                }

                // MARK: - 后台运行
                Section {
                    Toggle("允许后台运行", isOn: $store.backgroundRunning)
                        .onChange(of: store.backgroundRunning) { _ in store.save() }
                } header: { Text("后台运行") } footer: {
                    Text("关闭后应用切到后台将停止服务")
                }

                // MARK: - 样式
                Section {
                    NavigationLink {
                        StyleSettingsView()
                    } label: {
                        Text("样式")
                    }
                } header: { Text("外观") }

                // MARK: - 朋友
                Section {
                    NavigationLink("控制朋友") {
                        FriendControlView()
                    }
                } header: { Text("朋友") }

                // MARK: - 其他
                Section {
                    Button("用户协议与隐私说明") { showAgreement = true }
                }
            }
            .navigationTitle("设置")
            .sheet(isPresented: $showAgreement) {
                AgreementView()
            }
        }
    }

    private var shareText: String {
        let code = store.controlCode
        let webLink = "http://api.ausleep.parlz.com/control?code=\(code)"
        return """
              我在用「睡了吗」监督睡眠，这是我的控制码：\(code)
              点击链接直接连接（需安装「睡了吗」）：
              \(webLink)
              """
    }

    private func pickTime(isBed: Bool) {
        let scene = UIApplication.shared.connectedScenes.first as? UIWindowScene
        guard let root = scene?.windows.first?.rootViewController else { return }

        let vc = UIViewController()
        let picker = UIDatePicker()
        picker.datePickerMode = .time
        picker.preferredDatePickerStyle = .wheels
        picker.frame = CGRect(x: 0, y: 50, width: 320, height: 216)

        let alert = UIAlertController(title: isBed ? "就寝时间" : "起床时间", message: nil, preferredStyle: .alert)
        alert.view.addSubview(picker)

        alert.addAction(UIAlertAction(title: "确定", style: .default) { _ in
            let cal = Calendar.current
            let h = cal.component(.hour, from: picker.date)
            let m = cal.component(.minute, from: picker.date)
            let v = h * 60 + m
            if isBed {
                store.bedtimeMinutes = v
                BedtimeReminder.schedule(store: store)
            } else {
                store.waketimeMinutes = v
            }
            store.save()
        })
        alert.addAction(UIAlertAction(title: "取消", style: .cancel))

        alert.view.frame = CGRect(x: 0, y: 0, width: 320, height: 350)
        root.present(alert, animated: true)
    }
}