using Justice.Helpers;
using Justice.Models;
using System.Collections.ObjectModel;
using System.Threading.Tasks;

namespace Justice.Views
{
    public partial class AddContactPage : ContentPage
    {
        private readonly DatabaseHelper _databaseHelper;
        public ObservableCollection<EmergencyContact> Contacts { get; set; }

        public AddContactPage()
        {
            InitializeComponent();
            _databaseHelper = new DatabaseHelper();
            Contacts = new ObservableCollection<EmergencyContact>();
            ContactsListView.ItemsSource = Contacts;
        }

        protected override async void OnAppearing()
        {
            base.OnAppearing();
            await LoadContactsAsync();
        }

        private async Task LoadContactsAsync()
        {
            try
            {
                Contacts.Clear();
                var contactsFromDb = await _databaseHelper.GetAllAsync<EmergencyContact>();
                foreach (var contact in contactsFromDb)
                {
                    Contacts.Add(contact);
                }
            }
            catch (Exception ex)
            {
                await DisplayAlert("Error", $"Failed to load contacts: {ex.Message}", "OK");
            }
        }

        private async void OnSaveContactClicked(object sender, EventArgs e)
        {
            if (string.IsNullOrWhiteSpace(NameEntry.Text) ||
                string.IsNullOrWhiteSpace(MobileNumberEntry.Text) ||
                GroupPicker.SelectedItem == null)
            {
                await DisplayAlert("Error", "All fields are required.", "OK");
                return;
            }

            var contact = new EmergencyContact
            {
                Name = NameEntry.Text.Trim(),
                MobileNumber = MobileNumberEntry.Text.Trim(),
                Group = GroupPicker.SelectedItem.ToString()
            };

            try
            {
                await _databaseHelper.InsertAsync(contact);
                await LoadContactsAsync();

                NameEntry.Text = string.Empty;
                MobileNumberEntry.Text = string.Empty;
                GroupPicker.SelectedItem = null;

                await DisplayAlert("Success", "Contact saved successfully!", "OK");
            }
            catch (Exception ex)
            {
                await DisplayAlert("Error", $"Failed to save contact: {ex.Message}", "OK");
            }
        }

        private async void OnDeleteContactClicked(object sender, EventArgs e)
        {
            try
            {
                Console.WriteLine("Delete button clicked."); // Debug log

                var button = sender as Button;
                if (button?.CommandParameter is EmergencyContact contactToDelete)
                {
                    Console.WriteLine($"Attempting to delete contact: {contactToDelete.Name}"); // Debug log

                    bool confirm = await DisplayAlert("Delete Contact",
                        $"Are you sure you want to delete {contactToDelete.Name}?", "Yes", "No");

                    if (!confirm)
                        return;

                    await _databaseHelper.DeleteAsync(contactToDelete);
                    Contacts.Remove(contactToDelete);

                    await DisplayAlert("Success", "Contact deleted successfully!", "OK");
                }
                else
                {
                    Console.WriteLine("CommandParameter is null or invalid."); // Debug log
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error in OnDeleteContactClicked: {ex.Message}"); // Debug log
                await DisplayAlert("Error", $"Failed to delete contact: {ex.Message}", "OK");
            }
        }

    }
}