import 'package:flutter/material.dart';
import 'package:shimmer/shimmer.dart';
import 'core_card.dart';

/// UnionFlow Mobile - Composant DRY : CoreShimmer
/// Utilise `shimmer` package pour générer des loaders élégants sans textes.
class CoreShimmer extends StatelessWidget {
  final int itemCount;
  
  const CoreShimmer({
    Key? key,
    this.itemCount = 5,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final isDark = Theme.of(context).brightness == Brightness.dark;
    final baseColor = isDark ? Colors.grey[800]! : Colors.grey[300]!;
    final highlightColor = isDark ? Colors.grey[700]! : Colors.grey[100]!;

    return ListView.builder(
      itemCount: itemCount,
      shrinkWrap: true,
      physics: const NeverScrollableScrollPhysics(),
      itemBuilder: (_, __) => Padding(
        padding: const EdgeInsets.only(bottom: 8.0),
        child: Shimmer.fromColors(
          baseColor: baseColor,
          highlightColor: highlightColor,
          child: CoreCard(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  children: [
                    CircleAvatar(radius: 16, backgroundColor: Colors.white),
                    SizedBox(width: 8),
                    Expanded(
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Container(width: 100, height: 10, color: Colors.white),
                          SizedBox(height: 4),
                          Container(width: 40, height: 8, color: Colors.white),
                        ],
                      ),
                    ),
                  ],
                ),
                SizedBox(height: 12),
                Container(width: double.infinity, height: 10, color: Colors.white),
                SizedBox(height: 4),
                Container(width: 250, height: 10, color: Colors.white),
                SizedBox(height: 4),
                Container(width: 150, height: 10, color: Colors.white),
                SizedBox(height: 12),
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Container(width: 40, height: 12, color: Colors.white),
                    Container(width: 40, height: 12, color: Colors.white),
                    Container(width: 40, height: 12, color: Colors.white),
                  ],
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}