loopfollow/LoopFollow/Alarm/AlarmSettingsView.swift

//
//  AlarmSettingsView.swift
//  LoopFollow
//
//  Created by Jonas Björkert on 2025‑04‑20.
//  Copyright © 2025 Jon Fawcett. All rights reserved.
//

import SwiftUI

struct AlarmSettingsView: View {
    @ObservedObject private var cfgStore = Storage.shared.alarmConfiguration
    @Environment(\.presentationMode) var presentationMode

    /// Helper to bind an optional Date? into a non‑optional Date for DatePicker
    private func optDateBinding(_ b: Binding<Date?>) -> Binding<Date> {
        Binding(
            get: { b.wrappedValue ?? Date() },
            set: { b.wrappedValue = $0 }
        )
    }

    private var dayBinding: Binding<Date> {
        Binding(
            get: {
                var c = Calendar.current.dateComponents([.year, .month, .day], from: Date())
                c.hour   = cfgStore.value.dayStart.hour
                c.minute = cfgStore.value.dayStart.minute
                return Calendar.current.date(from: c)!
            },
            set: { d in
                let hc = Calendar.current.dateComponents([.hour, .minute], from: d)
                cfgStore.value.dayStart = TimeOfDay(hour: hc.hour!, minute: hc.minute!)
            }
        )
    }

    private var nightBinding: Binding<Date> {
        Binding(
            get: {
                var c = Calendar.current.dateComponents([.year, .month, .day], from: Date())
                c.hour   = cfgStore.value.nightStart.hour
                c.minute = cfgStore.value.nightStart.minute
                return Calendar.current.date(from: c)!
            },
            set: { d in
                let hc = Calendar.current.dateComponents([.hour, .minute], from: d)
                cfgStore.value.nightStart = TimeOfDay(hour: hc.hour!, minute: hc.minute!)
            }
        )
    }

    var body: some View {
        NavigationView {
            Form {
                Section(
                    header: Text("Snooze & Mute Options"),
                    footer: Text("""
                        Snooze All turns everything off, \
                        Mute All turns off phone sounds but leaves vibration \
                        and iOS notifications on
                        """)
                ) {
                    // Snooze All Until
                    DatePicker(
                        "Snooze All Until",
                        selection: optDateBinding(
                            Binding(
                                get: { cfgStore.value.snoozeUntil },
                                set: { cfgStore.value.snoozeUntil = $0 }
                            )
                        ),
                        displayedComponents: [.date, .hourAndMinute]
                    )

                    Toggle(
                        "All Alerts Snoozed",
                        isOn: Binding(
                            get: {
                                if let until = cfgStore.value.snoozeUntil {
                                    return until > Date()
                                }
                                return false
                            },
                            set: { newOn in
                                if newOn {
                                    // if turning on, set a default 1h snooze if none or expired
                                    if cfgStore.value.snoozeUntil == nil || cfgStore.value.snoozeUntil! <= Date() {
                                        cfgStore.value.snoozeUntil = Date().addingTimeInterval(3600)
                                    }
                                } else {
                                    cfgStore.value.snoozeUntil = nil
                                }
                            }
                        )
                    )

                    // Mute All Until
                    DatePicker(
                        "Mute All Until",
                        selection: optDateBinding(
                            Binding(
                                get: { cfgStore.value.muteUntil },
                                set: { cfgStore.value.muteUntil = $0 }
                            )
                        ),
                        displayedComponents: [.date, .hourAndMinute]
                    )

                    Toggle(
                        "All Sounds Muted",
                        isOn: Binding(
                            get: {
                                if let until = cfgStore.value.muteUntil {
                                    return until > Date()
                                }
                                return false
                            },
                            set: { newOn in
                                if newOn {
                                    if cfgStore.value.muteUntil == nil || cfgStore.value.muteUntil! <= Date() {
                                        cfgStore.value.muteUntil = Date().addingTimeInterval(3600)
                                    }
                                } else {
                                    cfgStore.value.muteUntil = nil
                                }
                            }
                        )
                    )
                }

                Section(header: Text("Alarm Settings")) {
                    Toggle(
                        "Override System Volume",
                        isOn: Binding(
                            get: { cfgStore.value.overrideSystemOutputVolume },
                            set: { cfgStore.value.overrideSystemOutputVolume = $0 }
                        )
                    )

                    if cfgStore.value.overrideSystemOutputVolume {
                        Stepper(
                            "Volume Level: \(Int(cfgStore.value.forcedOutputVolume * 100))%",
                            value: Binding(
                                get: { Double(cfgStore.value.forcedOutputVolume) },
                                set: { cfgStore.value.forcedOutputVolume = Float($0) }
                            ),
                            in: 0...1,
                            step: 0.05
                        )
                    }

                    Toggle(
                        "Audio During Calls",
                        isOn: Binding(
                            get: { cfgStore.value.audioDuringCalls },
                            set: { cfgStore.value.audioDuringCalls = $0 }
                        )
                    )

                    Toggle(
                        "Ignore Zero BG",
                        isOn: Binding(
                            get: { cfgStore.value.ignoreZeroBG },
                            set: { cfgStore.value.ignoreZeroBG = $0 }
                        )
                    )

                    Toggle(
                        "Auto‑Snooze CGM Start",
                        isOn: Binding(
                            get: { cfgStore.value.autoSnoozeCGMStart },
                            set: { cfgStore.value.autoSnoozeCGMStart = $0 }
                        )
                    )
                }
            }
            .navigationTitle("Alarm Settings")
            .toolbar {
                ToolbarItem(placement: .navigationBarTrailing) {
                    Button("Done") {
                        presentationMode.wrappedValue.dismiss()
                    }
                }
            }
        }
    }
}