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

class CastInfoShimmer extends StatelessWidget {
  const CastInfoShimmer({
    super.key,
  });

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final baseColor =
        theme.colorScheme.surfaceContainerHighest.withValues(alpha: 0.2);
    final highlightColor = theme.colorScheme.surfaceContainerHighest;

    return Scaffold(
      body: CustomScrollView(
        slivers: [
          // Profile Header Shimmer
          SliverAppBar(
            expandedHeight: 280,
            floating: false,
            pinned: true,
            backgroundColor: theme.colorScheme.surface,
            flexibleSpace: FlexibleSpaceBar(
              background: Container(
                color:
                    theme.colorScheme.primaryContainer.withValues(alpha: 0.8),
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Shimmer.fromColors(
                      baseColor: baseColor,
                      highlightColor: highlightColor,
                      child: Container(
                        width: 120,
                        height: 120,
                        decoration: const BoxDecoration(
                          color: Colors.white,
                          shape: BoxShape.circle,
                        ),
                      ),
                    ),
                    const SizedBox(height: 16),
                    Shimmer.fromColors(
                      baseColor: baseColor,
                      highlightColor: highlightColor,
                      child: Container(
                        width: 200,
                        height: 24,
                        decoration: BoxDecoration(
                          color: Colors.white,
                          borderRadius: BorderRadius.circular(4),
                        ),
                      ),
                    ),
                    const SizedBox(height: 8),
                    Shimmer.fromColors(
                      baseColor: baseColor,
                      highlightColor: highlightColor,
                      child: Container(
                        width: 120,
                        height: 16,
                        decoration: BoxDecoration(
                          color: Colors.white,
                          borderRadius: BorderRadius.circular(4),
                        ),
                      ),
                    ),
                    const SizedBox(height: 16),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: List.generate(
                        4,
                        (index) => Padding(
                          padding: const EdgeInsets.symmetric(horizontal: 8.0),
                          child: Shimmer.fromColors(
                            baseColor: baseColor,
                            highlightColor: highlightColor,
                            child: Container(
                              width: 40,
                              height: 40,
                              decoration: const BoxDecoration(
                                color: Colors.white,
                                shape: BoxShape.circle,
                              ),
                            ),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),

          // Content Shimmer
          SliverPadding(
            padding: const EdgeInsets.symmetric(horizontal: 16.0),
            sliver: SliverList(
              delegate: SliverChildListDelegate([
                const SizedBox(height: 16),
                Shimmer.fromColors(
                  baseColor: baseColor,
                  highlightColor: highlightColor,
                  child: Container(
                    height: 48,
                    decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.circular(12),
                    ),
                  ),
                ),
                _buildSectionShimmer(
                  title: 'Personal Information',
                  content: Column(
                    children: List.generate(
                      2,
                      (index) => Padding(
                        padding: const EdgeInsets.only(bottom: 8.0),
                        child: Row(
                          children: [
                            Shimmer.fromColors(
                              baseColor: baseColor,
                              highlightColor: highlightColor,
                              child: Container(
                                width: 18,
                                height: 18,
                                decoration: const BoxDecoration(
                                  color: Colors.white,
                                  shape: BoxShape.circle,
                                ),
                              ),
                            ),
                            const SizedBox(width: 12),
                            Expanded(
                              child: Shimmer.fromColors(
                                baseColor: baseColor,
                                highlightColor: highlightColor,
                                child: Container(
                                  height: 16,
                                  decoration: BoxDecoration(
                                    color: Colors.white,
                                    borderRadius: BorderRadius.circular(4),
                                  ),
                                ),
                              ),
                            ),
                          ],
                        ),
                      ),
                    ),
                  ),
                  theme: theme,
                ),
                _buildSectionShimmer(
                  title: 'Biography',
                  content: Column(
                    children: List.generate(
                      4,
                      (index) => Padding(
                        padding: const EdgeInsets.only(bottom: 8.0),
                        child: Shimmer.fromColors(
                          baseColor: baseColor,
                          highlightColor: highlightColor,
                          child: Container(
                            height: 16,
                            decoration: BoxDecoration(
                              color: Colors.white,
                              borderRadius: BorderRadius.circular(4),
                            ),
                          ),
                        ),
                      ),
                    ),
                  ),
                  theme: theme,
                ),
                _buildSectionShimmer(
                  title: 'Known For',
                  content: SizedBox(
                    height: 190,
                    child: ListView.builder(
                      scrollDirection: Axis.horizontal,
                      itemCount: 5,
                      itemBuilder: (context, index) {
                        return Container(
                          width: 100,
                          margin: const EdgeInsets.only(right: 12),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Shimmer.fromColors(
                                baseColor: baseColor,
                                highlightColor: highlightColor,
                                child: Container(
                                  height: 150,
                                  decoration: BoxDecoration(
                                    color: Colors.white,
                                    borderRadius: BorderRadius.circular(8),
                                  ),
                                ),
                              ),
                              const SizedBox(height: 8),
                              Shimmer.fromColors(
                                baseColor: baseColor,
                                highlightColor: highlightColor,
                                child: Container(
                                  height: 16,
                                  decoration: BoxDecoration(
                                    color: Colors.white,
                                    borderRadius: BorderRadius.circular(4),
                                  ),
                                ),
                              ),
                            ],
                          ),
                        );
                      },
                    ),
                  ),
                  theme: theme,
                ),
                const SizedBox(height: 24),
              ]),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildSectionShimmer({
    required String title,
    required Widget content,
    required ThemeData theme,
  }) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 12.0),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            title,
            style: theme.textTheme.titleMedium?.copyWith(
              fontWeight: FontWeight.bold,
              color: theme.colorScheme.primary,
            ),
          ),
          const SizedBox(height: 12),
          content,
        ],
      ),
    );
  }
}