PocketBook/Sources/BookApp/Pages/DetailBook.xaml.cs

using BookApp.Model;
using System.Collections.ObjectModel;

namespace BookApp.Pages;

public partial class DetailBook : ContentPage
{
    private int maxStars = 5;
    private int currentRating = 0;

    public Book BookDetail { get; set; }

    public DetailBook(Book ItemBook)
    {
        InitializeComponent();

        for (int i = 1; i <= maxStars; i++)
        {
            var star = new Image
            {
                Source = "empty_star.svg", // image d'une étoile vide
                WidthRequest = 25,
                HeightRequest = 25
            };

            int currentStar = i;

            star.GestureRecognizers.Add(
                new TapGestureRecognizer { Command = new Command(() => StarTapped(currentStar)), }
            );
            StarLayout.Children.Add(star);
        }

        UpdateStars();
        BookDetail = ItemBook;
        BindingContext = this;
    }

    private void StarTapped(int rating)
    {
        if (rating > maxStars)
        {
            System.Diagnostics.Debug.WriteLine("Erreur : rating trop élevé!");
            return;
        }

        currentRating = rating;
        UpdateStars();
        RatingLabel.Text = $"Note: {currentRating}/{maxStars}";
    }

    private void UpdateStars()
    {
        for (int i = 0; i < maxStars; i++)
        {
            var star = (Image)StarLayout.Children[i];
            if (i < currentRating)
                star.Source = "filled_star.svg"; // image d'une étoile remplie
            else
                star.Source = "empty_star.svg";
        }
    }

    async void BackButton(object sender, EventArgs args)
    {
        await Shell.Current.Navigation.PopAsync();
    }
}