import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import '../models/message_model.dart';
import '../theme/app_theme.dart';

class MessageBubble extends StatelessWidget {
  final MessageModel message;

  const MessageBubble({super.key, required this.message});

  @override
  Widget build(BuildContext context) {
    final isMe = message.fromMe;
    final align = isMe ? CrossAxisAlignment.end : CrossAxisAlignment.start;
    final bg = isMe ? AppTheme.outgoingMsg : AppTheme.incomingMsg;
    final radius = isMe
        ? const BorderRadius.only(
            topLeft: Radius.circular(12),
            topRight: Radius.circular(0),
            bottomLeft: Radius.circular(12),
            bottomRight: Radius.circular(12),
          )
        : const BorderRadius.only(
            topLeft: Radius.circular(0),
            topRight: Radius.circular(12),
            bottomLeft: Radius.circular(12),
            bottomRight: Radius.circular(12),
          );

    return Container(
      margin: const EdgeInsets.symmetric(vertical: 4, horizontal: 8),
      child: Column(
        crossAxisAlignment: align,
        children: [
          Container(
            constraints: BoxConstraints(
              maxWidth: MediaQuery.of(context).size.width * 0.75,
            ),
            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
            decoration: BoxDecoration(
              color: bg,
              borderRadius: radius,
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisSize: MainAxisSize.min,
              children: [
                // Show sender name in group chats if not from me
                if (!isMe && message.author != null) ...[
                  Text(
                    message.author!,
                    style: const TextStyle(
                      color: AppTheme.primary,
                      fontSize: 12,
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                  const SizedBox(height: 4),
                ],

                // Media placeholder if it is media
                if (message.hasMedia) ...[
                  _buildMediaPlaceholder(),
                  const SizedBox(height: 6),
                ],

                // Message text & time row
                Row(
                  mainAxisSize: MainAxisSize.min,
                  crossAxisAlignment: CrossAxisAlignment.end,
                  children: [
                    Flexible(
                      child: Text(
                        message.body,
                        style: const TextStyle(
                          color: AppTheme.textPrimary,
                          fontSize: 15,
                        ),
                      ),
                    ),
                    const SizedBox(width: 8),
                    Padding(
                      padding: const EdgeInsets.only(top: 4),
                      child: Row(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          Text(
                            _formatTime(message.timestamp),
                            style: const TextStyle(
                              color: AppTheme.textSecondary,
                              fontSize: 10,
                            ),
                          ),
                          if (isMe) ...[
                            const SizedBox(width: 4),
                            _buildAckIcon(message.ack),
                          ],
                        ],
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildMediaPlaceholder() {
    IconData iconData = Icons.insert_drive_file;
    String label = "File Attachment";

    switch (message.type) {
      case "image":
        iconData = Icons.photo;
        label = "Image";
        break;
      case "video":
        iconData = Icons.videocam;
        label = "Video";
        break;
      case "audio":
        iconData = Icons.audiotrack;
        label = "Audio File";
        break;
      case "sticker":
        iconData = Icons.emoji_emotions;
        label = "Sticker";
        break;
    }

    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.black.withOpacity(0.15),
        borderRadius: BorderRadius.circular(8),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(iconData, color: AppTheme.textSecondary, size: 32),
          const SizedBox(width: 12),
          Text(
            label,
            style: const TextStyle(color: AppTheme.textPrimary, fontWeight: FontWeight.w500),
          ),
        ],
      ),
    );
  }

  Widget _buildAckIcon(int ack) {
    switch (ack) {
      case 1: // Pending
        return const Icon(Icons.access_time, size: 13, color: AppTheme.textSecondary);
      case 2: // Sent
        return const Icon(Icons.done, size: 15, color: AppTheme.textSecondary);
      case 3: // Delivered
        return const Icon(Icons.done_all, size: 15, color: AppTheme.textSecondary);
      case 4: // Read
        return const Icon(Icons.done_all, size: 15, color: Colors.blue);
      default:
        return const SizedBox.shrink();
    }
  }

  String _formatTime(int timestamp) {
    if (timestamp == 0) return '';
    final dt = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
    return DateFormat('h:mm a').format(dt);
  }
}