pageta-native/Sources/Features/SettingsView.swift

#if os(macOS)

import ManaAuthUI
import ManaCore
import ManaLLMUI
import SwiftUI

/// macOS-Settings-Scene (`Settings { ... }` in `PagetaNativeApp`),
/// erreichbar über **⌘,** — der erwartete native Pattern für
/// App-Konfiguration auf dem Mac. Vier Sub-Tabs:
///
/// - **Konto**: Email-Status, Abmelden
/// - **Darstellung**: Light/Dark/Automatisch-Picker
/// - **Benachrichtigungen**: App-Icon-Badge
/// - **KI**: lokales LLM für Artikel-Zusammenfassung (geteilt mit
///   anderen mana-Apps via App-Group)
///
/// Auf iOS lebt die identische Konfig im normalen Konto-Tab
/// — `AccountTabView` ist dort der Settings-Hub.
struct SettingsView: View {
	var body: some View {
		TabView {
			AccountSettingsPane()
				.tabItem { Label("Konto", systemImage: "person.crop.circle") }

			AppearanceSettingsPane()
				.tabItem { Label("Darstellung", systemImage: "paintbrush") }

			NotificationSettingsPane()
				.tabItem { Label("Benachrichtigungen", systemImage: "bell") }

			AISettingsPane()
				.tabItem { Label("KI", systemImage: "sparkles") }
		}
		.frame(width: 520, height: 360)
	}
}

private struct AISettingsPane: View {
	var body: some View {
		Form {
			ManaLLMSettingsView(context: AccountTabView.llmContext)
		}
		.formStyle(.grouped)
		.padding(20)
	}
}

private struct AccountSettingsPane: View {
	@Environment(AuthClient.self) private var auth
	@Environment(ManaAuthGate.self) private var authGate

	private var isSignedIn: Bool {
		if case .signedIn = auth.status { return true }
		return false
	}

	var body: some View {
		Form {
			Section {
				if let email = auth.currentEmail {
					LabeledContent("E-Mail", value: email)
				} else {
					Text("Nicht eingeloggt")
						.foregroundStyle(.secondary)
				}
			}

			Section {
				if isSignedIn {
					HStack {
						Spacer()
						Button("Abmelden", role: .destructive) {
							Task {
								await SpotlightIndex().clearAll()
								await auth.signOut()
							}
						}
					}
				} else {
					Button {
						authGate.require(reason: "konto") {}
					} label: {
						Label(
							"Mit mana-Konto anmelden",
							systemImage: "person.crop.circle.badge.checkmark"
						)
					}
				}
			}
		}
		.formStyle(.grouped)
		.padding(20)
	}
}

private struct AppearanceSettingsPane: View {
	var body: some View {
		Form {
			Section("Hell / Dunkel") {
				PagetaAppearancePicker()
				Text("„Automatisch\" folgt der System-Einstellung.")
					.font(.footnote)
					.foregroundStyle(.secondary)
			}
			Section("Thema") {
				PagetaThemeGallery()
				Text("Bestimmt die Farbwelt der App — frei wählbar, gilt sofort überall.")
					.font(.footnote)
					.foregroundStyle(.secondary)
			}
		}
		.formStyle(.grouped)
		.padding(20)
	}
}

private struct NotificationSettingsPane: View {
	@AppStorage(BadgeManager.userDefaultsKey) private var badgeEnabled = false

	var body: some View {
		Form {
			Section {
				Toggle("App-Icon-Badge zeigen", isOn: $badgeEnabled)
					.onChange(of: badgeEnabled) { _, enabled in
						Task { await handleBadgeToggle(enabled: enabled) }
					}
			} footer: {
				Text(
					"Zeigt die Anzahl ungelesener Artikel am Dock-Icon. Beim Aktivieren wird die System-Berechtigung abgefragt."
				)
				.font(.footnote)
				.foregroundStyle(.secondary)
			}
		}
		.formStyle(.grouped)
		.padding(20)
	}

	private func handleBadgeToggle(enabled: Bool) async {
		if enabled {
			let granted = await BadgeManager.requestPermission()
			if !granted {
				badgeEnabled = false
			}
		} else {
			await BadgeManager.setBadge(count: 0)
		}
	}
}

#endif