onyx/Onyx/SettingsView.swift

import SwiftUI
import OnyxDesign
import OnyxNotch
import OnyxWidgetKit
import CalendarProvider

enum SettingsTab: Hashable {
    case widgets, display, permissions
}

struct SettingsView: View {
    @Bindable var model: AppModel
    let calendarModel: CalendarModel
    @Binding var selectedTab: SettingsTab

    var body: some View {
        TabView(selection: $selectedTab) {
            WidgetSettings(model: model)
                .tabItem { Label("settings.tab.widgets", systemImage: "square.grid.2x2") }
                .tag(SettingsTab.widgets)
            DisplaySettings(model: model)
                .tabItem { Label("settings.tab.display", systemImage: "macbook") }
                .tag(SettingsTab.display)
            PermissionSettings(calendarModel: calendarModel)
                .tabItem { Label("settings.tab.permissions", systemImage: "hand.raised") }
                .tag(SettingsTab.permissions)
        }
        .frame(width: 520, height: 420)
    }
}

// MARK: - Berechtigungen

/// Zeigt den Zustand, statt ihn nur spürbar zu machen.
///
/// Eine verweigerte Berechtigung äußert sich sonst als leeres Widget, und der
/// Weg zurück ist nicht offensichtlich: hat macOS die Anfrage einmal
/// abgelehnt bekommen, fragt es nie wieder — es bleibt nur der Gang in die
/// Systemeinstellungen.
private struct PermissionSettings: View {
    let calendarModel: CalendarModel
    @State private var granted = false

    var body: some View {
        Form {
            Section {
                HStack {
                    Label("settings.permissions.calendar", systemImage: "calendar")
                    Spacer()
                    if granted {
                        Label("settings.permissions.granted", systemImage: "checkmark.circle.fill")
                            .foregroundStyle(.green)
                            .labelStyle(.titleAndIcon)
                    } else {
                        Button("settings.permissions.request") {
                            Task {
                                let ok = await calendarModel.requestAccessNow()
                                granted = ok
                                // macOS fragt nach einer Ablehnung nicht erneut.
                                // Dann hilft nur noch der Weg über die
                                // Systemeinstellungen — also dorthin führen.
                                if !ok { openPrivacySettings() }
                            }
                        }
                    }
                }
                Text("settings.permissions.calendar.why")
                    .font(.callout)
                    .foregroundStyle(.secondary)
                    .fixedSize(horizontal: false, vertical: true)
            }

            Section {
                Button("settings.permissions.openSystem") { openPrivacySettings() }
            }
        }
        .formStyle(.grouped)
        .padding()
        .onAppear { granted = calendarModel.hasAccess }
    }

    private func openPrivacySettings() {
        guard let url = URL(string:
            "x-apple.systempreferences:com.apple.preference.security?Privacy_Calendars") else { return }
        NSWorkspace.shared.open(url)
    }
}

// MARK: - Widgets

private struct WidgetSettings: View {
    @Bindable var model: AppModel

    var body: some View {
        VStack(alignment: .leading, spacing: 12) {
            Text("settings.widgets.hint")
                .font(.callout)
                .foregroundStyle(.secondary)

            List {
                Section("settings.widgets.inPanel") {
                    // Die Reihenfolge hier ist die Reihenfolge im Panel: die
                    // Layout-Engine setzt die Widgets von oben links der Reihe
                    // nach ein.
                    ForEach(model.layout) { placement in
                        if let widget = WidgetRegistry.shared.widget(id: placement.widgetID) {
                            PlacementRow(model: model, placement: placement, widget: widget)
                        }
                    }
                    .onMove { model.move(fromOffsets: $0, toOffset: $1) }

                    if model.layout.isEmpty {
                        Text("settings.widgets.empty")
                            .foregroundStyle(.secondary)
                    }
                }

                let available = WidgetRegistry.shared.all.filter { !model.isInPanel($0.id) }
                if !available.isEmpty {
                    Section("settings.widgets.available") {
                        ForEach(available, id: \.id) { widget in
                            HStack {
                                Label(widget.displayName, systemImage: widget.symbolName)
                                Spacer()
                                Button("settings.widgets.add") { model.add(widget) }
                                    .buttonStyle(.borderless)
                            }
                        }
                    }
                }
            }
            .listStyle(.inset)
        }
        .padding()
    }
}

private struct PlacementRow: View {
    @Bindable var model: AppModel
    let placement: WidgetPlacement
    let widget: any OnyxWidget

    var body: some View {
        HStack {
            Label(widget.displayName, systemImage: widget.symbolName)

            Spacer()

            // Nur die Größen anbieten, die das Widget auch sinnvoll ausfüllt.
            // Ein Mini-Monat in 1×1 wäre unleserlich.
            Picker("", selection: Binding(
                get: { placement.size },
                set: { model.setSize($0, for: placement.widgetID) })) {
                    ForEach(widget.supportedSizes) { size in
                        Text(size.localizedName).tag(size)
                    }
                }
                .labelsHidden()
                .frame(width: 130)

            Button {
                model.remove(placement.widgetID)
            } label: {
                Image(systemName: "minus.circle")
            }
            .buttonStyle(.borderless)
            .help("settings.widgets.remove")
        }
    }
}

// MARK: - Anzeige

private struct DisplaySettings: View {
    @Bindable var model: AppModel

    var body: some View {
        Form {
            Picker("settings.display.policy", selection: $model.displayPolicy) {
                Text("settings.display.builtInOnly").tag(DisplayPolicy.builtInOnly)
                Text("settings.display.all").tag(DisplayPolicy.allDisplays)
            }
            .pickerStyle(.radioGroup)

            Text("settings.display.hint")
                .font(.callout)
                .foregroundStyle(.secondary)
                .fixedSize(horizontal: false, vertical: true)

            Divider()

            Toggle("settings.display.menuBarIcon", isOn: $model.showsMenuBarIcon)
            Text("settings.display.menuBarIcon.hint")
                .font(.callout)
                .foregroundStyle(.secondary)
                .fixedSize(horizontal: false, vertical: true)
        }
        .formStyle(.grouped)
        .padding()
    }
}

extension WidgetSize {
    var localizedName: LocalizedStringKey {
        switch self {
        case .small: "settings.size.small"
        case .medium: "settings.size.medium"
        case .large: "settings.size.large"
        case .wide: "settings.size.wide"
        }
    }
}