import 'dart:io';

import 'package:flutter/material.dart';
import '../services/dio_client.dart';
import '../screens/chat_file_viewer.dart';
import '../widgets/chat_file_actions.dart';

class ChatFilePreview extends StatelessWidget {
  final String filePath;
  final String fileType;
  final bool isUser;

  final bool isLocal;

  const ChatFilePreview({
    super.key,
    required this.filePath,
    required this.fileType,
    required this.isUser,
    this.isLocal = false,
  });


  @override
  Widget build(BuildContext context) {
    final url = "${DioClient.baseUrl}/storage/$filePath";
    final textColor = isUser ? Colors.white : Colors.black;

    // LOCAL IMAGE (uploading preview)
    if (isLocal && fileType.startsWith('image/')) {
      return Image.file(
        File(filePath),
        width: 180,
        height: 120,
        fit: BoxFit.cover,
      );
    }

    return GestureDetector(
      onTap: () {
        // ✅ TAP = OPEN
        ChatFileViewer.open(
          context,
          url: url,
          fileType: fileType,
        );
      },
      onLongPress: () {
        // ✅ LONG PRESS = OPEN / DOWNLOAD
        ChatFileActions.show(
          context,
          url: url,
          fileType: fileType,
        );
      },
      child: _buildPreviewUI(textColor, url),
    );
  }

  Widget _buildPreviewUI(Color textColor, String url) {
    // IMAGE
    if (fileType.startsWith('image/')) {
      return ClipRRect(
        borderRadius: BorderRadius.circular(8),
        child: Image.network(
          url,
          width: 180,
          height: 120,
          fit: BoxFit.cover,
        ),
      );
    }

    // VIDEO
    if (fileType.startsWith('video/')) {
      return Stack(
        alignment: Alignment.center,
        children: [
          Container(
            width: 180,
            height: 120,
            decoration: BoxDecoration(
              color: Colors.black26,
              borderRadius: BorderRadius.circular(8),
            ),
            child: const Icon(
              Icons.videocam,
              size: 50,
              color: Colors.white70,
            ),
          ),
          const Icon(
            Icons.play_circle_fill,
            size: 56,
            color: Colors.white,
          ),
        ],
      );
    }

    // PDF / OTHER FILES
    return Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        Icon(_fileIcon(fileType), color: textColor),
        const SizedBox(width: 8),
        Text(
          _fileLabel(fileType),
          style: TextStyle(color: textColor),
        ),
      ],
    );
  }


  IconData _fileIcon(String type) {
    if (type == 'application/pdf') return Icons.picture_as_pdf;
    if (type.contains('excel')) return Icons.table_chart;
    return Icons.insert_drive_file;
  }

  String _fileLabel(String type) {
    if (type == 'application/pdf') return "PDF document";
    if (type.contains('excel')) return "Excel file";
    return "Download file";
  }
}