import 'package:auto_route/auto_route.dart';
import 'package:flutter/material.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:immich_mobile/extensions/build_context_extensions.dart';
import 'package:immich_mobile/extensions/translate_extensions.dart';
import 'package:immich_mobile/providers/backup/drift_backup.provider.dart';
import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
import 'package:immich_mobile/providers/infrastructure/asset.provider.dart';
import 'package:immich_mobile/presentation/widgets/images/thumbnail.widget.dart';
import 'package:immich_mobile/utils/bytes_units.dart';
import 'package:path/path.dart' as path;

@RoutePage()
class DriftUploadDetailPage extends ConsumerWidget {
  const DriftUploadDetailPage({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final uploadItems = ref.watch(
      driftBackupProvider.select((state) => state.uploadItems),
    );

    return Scaffold(
      appBar: AppBar(
        title: Text("upload_details".t(context: context)),
        backgroundColor: context.colorScheme.surface,
        elevation: 0,
        scrolledUnderElevation: 1,
      ),
      body: uploadItems.isEmpty ? _buildEmptyState(context) : _buildUploadList(uploadItems),
    );
  }

  Widget _buildEmptyState(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Icon(
            Icons.cloud_off_rounded,
            size: 80,
            color: context.colorScheme.onSurface.withValues(alpha: 0.3),
          ),
          const SizedBox(height: 16),
          Text(
            "no_uploads_in_progress".t(context: context),
            style: context.textTheme.titleMedium?.copyWith(
              color: context.colorScheme.onSurface.withValues(alpha: 0.6),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildUploadList(
    Map<String, DriftUploadStatus> uploadItems,
  ) {
    return ListView.separated(
      addAutomaticKeepAlives: true,
      padding: const EdgeInsets.all(16),
      itemCount: uploadItems.length,
      separatorBuilder: (context, index) => const SizedBox(height: 4),
      itemBuilder: (context, index) {
        final item = uploadItems.values.elementAt(index);
        return _buildUploadCard(context, item);
      },
    );
  }

  Widget _buildUploadCard(
    BuildContext context,
    DriftUploadStatus item,
  ) {
    final isCompleted = item.progress >= 1.0;
    final double progressPercentage = (item.progress * 100).clamp(0, 100);

    return Card(
      elevation: 0,
      color: item.isFailed != null ? context.colorScheme.errorContainer : context.colorScheme.surfaceContainer,
      shape: RoundedRectangleBorder(
        borderRadius: const BorderRadius.all(
          Radius.circular(16),
        ),
        side: BorderSide(
          color: context.colorScheme.outline.withValues(alpha: 0.1),
          width: 1,
        ),
      ),
      child: InkWell(
        onTap: () => _showFileDetailDialog(context, item),
        borderRadius: const BorderRadius.all(
          Radius.circular(16),
        ),
        child: Padding(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          path.basename(item.filename),
                          style: context.textTheme.titleSmall?.copyWith(
                            fontWeight: FontWeight.w600,
                          ),
                          maxLines: 1,
                          overflow: TextOverflow.ellipsis,
                        ),
                        const SizedBox(height: 4),
                        Text(
                          'Tap for more details',
                          style: context.textTheme.bodySmall?.copyWith(
                            color: context.colorScheme.onSurface.withValues(alpha: 0.6),
                          ),
                          maxLines: 1,
                          overflow: TextOverflow.ellipsis,
                        ),
                      ],
                    ),
                  ),
                  _buildProgressIndicator(
                    context,
                    item.progress,
                    progressPercentage,
                    isCompleted,
                    item.networkSpeedAsString,
                  ),
                ],
              ),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildProgressIndicator(
    BuildContext context,
    double progress,
    double percentage,
    bool isCompleted,
    String networkSpeedAsString,
  ) {
    return Column(
      children: [
        Stack(
          alignment: AlignmentDirectional.center,
          children: [
            SizedBox(
              width: 36,
              height: 36,
              child: TweenAnimationBuilder(
                tween: Tween<double>(begin: 0.0, end: progress),
                duration: const Duration(milliseconds: 300),
                builder: (context, value, _) => CircularProgressIndicator(
                  backgroundColor: context.colorScheme.outline.withValues(alpha: 0.2),
                  strokeWidth: 3,
                  value: value,
                  color: isCompleted ? context.colorScheme.primary : context.colorScheme.secondary,
                ),
              ),
            ),
            if (isCompleted)
              Icon(
                Icons.check_circle_rounded,
                size: 28,
                color: context.colorScheme.primary,
              )
            else
              Text(
                percentage.toStringAsFixed(0),
                style: context.textTheme.labelSmall?.copyWith(
                  fontWeight: FontWeight.bold,
                  fontSize: 10,
                ),
              ),
          ],
        ),
        Text(
          networkSpeedAsString,
          style: context.textTheme.labelSmall?.copyWith(
            color: context.colorScheme.onSurface.withValues(alpha: 0.6),
            fontSize: 10,
          ),
        ),
      ],
    );
  }

  Future<void> _showFileDetailDialog(
    BuildContext context,
    DriftUploadStatus item,
  ) async {
    showDialog(
      context: context,
      builder: (context) => FileDetailDialog(uploadStatus: item),
    );
  }
}

class FileDetailDialog extends ConsumerWidget {
  final DriftUploadStatus uploadStatus;

  const FileDetailDialog({
    super.key,
    required this.uploadStatus,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    return AlertDialog(
      insetPadding: const EdgeInsets.all(20),
      backgroundColor: context.colorScheme.surfaceContainerLow,
      shape: RoundedRectangleBorder(
        borderRadius: const BorderRadius.all(
          Radius.circular(16),
        ),
        side: BorderSide(
          color: context.colorScheme.outline.withValues(alpha: 0.2),
          width: 1,
        ),
      ),
      title: Row(
        children: [
          Icon(
            Icons.info_outline,
            color: context.primaryColor,
            size: 24,
          ),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              "details".t(context: context),
              style: context.textTheme.titleMedium?.copyWith(
                fontWeight: FontWeight.w600,
                color: context.primaryColor,
              ),
            ),
          ),
        ],
      ),
      content: SizedBox(
        width: double.maxFinite,
        child: FutureBuilder<LocalAsset?>(
          future: _getAssetDetails(ref, uploadStatus.taskId),
          builder: (context, snapshot) {
            if (snapshot.connectionState == ConnectionState.waiting) {
              return const SizedBox(
                height: 200,
                child: Center(child: CircularProgressIndicator()),
              );
            }

            final asset = snapshot.data;
            return SingleChildScrollView(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisSize: MainAxisSize.min,
                children: [
                  // Thumbnail at the top center
                  Center(
                    child: ClipRRect(
                      borderRadius: const BorderRadius.all(Radius.circular(12)),
                      child: Container(
                        width: 128,
                        height: 128,
                        decoration: BoxDecoration(
                          border: Border.all(
                            color: context.colorScheme.outline.withValues(alpha: 0.2),
                            width: 1,
                          ),
                          borderRadius: const BorderRadius.all(Radius.circular(12)),
                        ),
                        child: asset != null
                            ? Thumbnail(
                                asset: asset,
                                size: const Size(512, 512),
                                fit: BoxFit.cover,
                              )
                            : null,
                      ),
                    ),
                  ),
                  const SizedBox(height: 24),
                  if (asset != null) ...[
                    _buildInfoSection(context, [
                      _buildInfoRow(
                        context,
                        "Filename",
                        path.basename(uploadStatus.filename),
                      ),
                      _buildInfoRow(
                        context,
                        "Local ID",
                        asset.id,
                      ),
                      _buildInfoRow(
                        context,
                        "File Size",
                        formatHumanReadableBytes(uploadStatus.fileSize, 2),
                      ),
                      if (asset.width != null) _buildInfoRow(context, "Width", "${asset.width}px"),
                      if (asset.height != null)
                        _buildInfoRow(
                          context,
                          "Height",
                          "${asset.height}px",
                        ),
                      _buildInfoRow(
                        context,
                        "Created At",
                        asset.createdAt.toString(),
                      ),
                      _buildInfoRow(
                        context,
                        "Updated At",
                        asset.updatedAt.toString(),
                      ),
                      if (asset.checksum != null)
                        _buildInfoRow(
                          context,
                          "Checksum",
                          asset.checksum!,
                        ),
                    ]),
                  ],
                ],
              ),
            );
          },
        ),
      ),
      actions: [
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: Text(
            "close".t(),
            style: TextStyle(
              fontWeight: FontWeight.w600,
              color: context.primaryColor,
            ),
          ),
        ),
      ],
    );
  }

  Widget _buildInfoSection(
    BuildContext context,
    List<Widget> children,
  ) {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: context.colorScheme.surfaceContainer,
        borderRadius: const BorderRadius.all(
          Radius.circular(12),
        ),
        border: Border.all(
          color: context.colorScheme.outline.withValues(alpha: 0.1),
          width: 1,
        ),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          ...children,
        ],
      ),
    );
  }

  Widget _buildInfoRow(BuildContext context, String label, String value) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 4),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          SizedBox(
            width: 100,
            child: Text(
              "$label:",
              style: context.textTheme.labelMedium?.copyWith(
                fontWeight: FontWeight.w500,
                color: context.colorScheme.onSurface.withValues(alpha: 0.7),
              ),
            ),
          ),
          Expanded(
            child: Text(
              value,
              style: context.textTheme.labelMedium?.copyWith(),
              maxLines: 3,
              overflow: TextOverflow.ellipsis,
            ),
          ),
        ],
      ),
    );
  }

  Future<LocalAsset?> _getAssetDetails(
    WidgetRef ref,
    String localAssetId,
  ) async {
    try {
      final repository = ref.read(localAssetRepository);
      return await repository.getById(localAssetId);
    } catch (e) {
      return null;
    }
  }
}