import UIKit
import SwiftUI

// MARK: - Quick action identifiers

enum QuickAction: String {
    case addTask  = "com.kutesir.kisanical.addTask"
    case today    = "com.kutesir.kisanical.today"
    case calendar = "com.kutesir.kisanical.calendar"
    case workout  = "com.kutesir.kisanical.workout"
    case next3    = "com.kutesir.kisanical.next3days"
}

// MARK: - Singleton observable handler

final class ShortcutHandler: ObservableObject {
    static let shared = ShortcutHandler()
    @Published var pending: QuickAction?

    private init() {}

    func handle(_ type: String) {
        guard let action = QuickAction(rawValue: type) else { return }
        DispatchQueue.main.async { self.pending = action }
    }

    func consume() {
        pending = nil
    }
}

// MARK: - Shortcut registration

extension ShortcutHandler {
    static func registerShortcuts() {
        let ud = UserDefaults.standard
        let showWorkout = ud.object(forKey: "showWorkoutTab") as? Bool ?? true

        var items: [UIApplicationShortcutItem] = [
            UIApplicationShortcutItem(
                type: QuickAction.today.rawValue,
                localizedTitle: "Tasks",
                localizedSubtitle: "Open your task list",
                icon: UIApplicationShortcutIcon(systemImageName: "checkmark.circle.fill")
            ),
            UIApplicationShortcutItem(
                type: QuickAction.addTask.rawValue,
                localizedTitle: "Add Task",
                localizedSubtitle: "Create a new reminder",
                icon: UIApplicationShortcutIcon(systemImageName: "plus.circle.fill")
            ),
            UIApplicationShortcutItem(
                type: QuickAction.calendar.rawValue,
                localizedTitle: "Calendar",
                localizedSubtitle: "Month view",
                icon: UIApplicationShortcutIcon(systemImageName: "calendar")
            ),
            UIApplicationShortcutItem(
                type: QuickAction.next3.rawValue,
                localizedTitle: "Next 3 Days",
                localizedSubtitle: "Upcoming tasks",
                icon: UIApplicationShortcutIcon(systemImageName: "calendar.badge.clock")
            ),
        ]

        if showWorkout {
            items.append(UIApplicationShortcutItem(
                type: QuickAction.workout.rawValue,
                localizedTitle: "Workout",
                localizedSubtitle: "Today's session",
                icon: UIApplicationShortcutIcon(systemImageName: "dumbbell.fill")
            ))
        }

        UIApplication.shared.shortcutItems = items
    }
}