import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_markdown_plus/flutter_markdown_plus.dart';
import 'package:test_sa/extensions/int_extensions.dart';
import 'package:test_sa/extensions/string_extensions.dart';
import 'package:test_sa/extensions/text_extensions.dart';
import 'package:test_sa/new_views/app_style/app_color.dart';
import 'package:test_sa/views/widgets/sound/sound_player.dart';
import 'package:url_launcher/url_launcher.dart';
import '../model/copilot_message_model.dart';

class CopilotMessageBubble extends StatelessWidget {
  final CopilotMessage message;
  final bool showHeader;

  const CopilotMessageBubble({Key? key, required this.message, this.showHeader = true}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final isUser = message.role == CopilotRole.user;
    return isUser ? _senderCard(context) : _recipientCard(context);
  }

  static const Widget _avatar = SizedBox(
    height: 26,
    width: 26,
    child: DecoratedBox(decoration: BoxDecoration(shape: BoxShape.circle, color: Colors.grey)),
  );

  String get _timeText => (message.timestamp?.toIso8601String() ?? DateTime.now().toIso8601String()).chatMsgTime;

  Widget _senderCard(BuildContext context) {
    final senderHeader = Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        Text(
          "Me",
          overflow: TextOverflow.ellipsis,
          maxLines: 1,
          style: AppTextStyles.bodyText.copyWith(color: AppColor.neutral50, fontWeight: FontWeight.w600),
        ),
        8.width,
        _avatar,
      ],
    );

    return Align(
      alignment: Alignment.centerRight,
      child: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.end,
        children: [
          if (showHeader) ...[senderHeader, 4.height] else 8.height,
          Row(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.end,
            children: [
              Flexible(
                fit: FlexFit.loose,
                child: Container(
                  padding: const EdgeInsets.all(8),
                  constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.75),
                  decoration: BoxDecoration(
                    color: AppColor.white50,
                    borderRadius: BorderRadius.circular(6),
                  ),
                  child: Column(
                    mainAxisSize: MainAxisSize.min,
                    crossAxisAlignment: CrossAxisAlignment.end,
                    children: [
                      if (message.localAudioPath != null)
                        ASoundPlayer(audio: message.localAudioPath!)
                      else
                        Text(
                          message.content,
                          style: AppTextStyles.bodyText2.copyWith(color: AppColor.textColor(context)),
                        ),
                      Text(
                        _timeText,
                        style: AppTextStyles.bodyText2.copyWith(color: AppColor.textColor(context)),
                      ),
                    ],
                  ),
                ),
              ),
              (26 + 8).width,
            ],
          ),
        ],
      ),
    );
  }

  Widget _recipientCard(BuildContext context) {
    final showLoadingDots = message.isStreaming && message.content.isEmpty;
    final recipientHeader = Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        _avatar,
        8.width,
        Text(
          "Copilot",
          overflow: TextOverflow.ellipsis,
          maxLines: 1,
          style: AppTextStyles.bodyText.copyWith(color: AppColor.neutral50, fontWeight: FontWeight.w600),
        ),
      ],
    );
    return Align(
      alignment: Alignment.centerLeft,
      child: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          if (showHeader) ...[recipientHeader, 4.height] else 8.height,
          Container(
            padding: const EdgeInsets.all(8),
            margin: const EdgeInsets.only(left: 26 + 8, right: 26 + 8),
            constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.75),
            decoration: BoxDecoration(
              color: AppColor.background(context),
              borderRadius: BorderRadius.circular(6),
            ),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.end,
              children: [
                if (showLoadingDots)
                  const Align(
                    alignment: Alignment.centerLeft,
                    child: SizedBox(
                      height: 16,
                      width: 16,
                      child: CircularProgressIndicator(strokeWidth: 2, color: AppColor.primary10),
                    ),
                  )
                else
                  _buildMessageContent(context),
                // if (message.content.isNotEmpty && message.images.isNotEmpty) 8.height,
                // if (message.content.isNotEmpty)
                //   Text(
                //     message.content,
                //     style: AppTextStyles.bodyText2.copyWith(
                //       color: message.isError ? Colors.red : AppColor.white10,
                //     ),
                //   ),
                if (message.images.isNotEmpty) ...[
                  8.height,
                  SizedBox(
                    height: 90,
                    width: double.infinity,
                    child: ListView.separated(
                      scrollDirection: Axis.horizontal,
                      itemCount: message.images.length,
                      separatorBuilder: (_, __) => 8.width,
                      itemBuilder: (context, index) {
                        final img = message.images[index];
                        return Image.memory(
                          base64Decode(img.base64),
                          width: 100,
                          height: 100,
                          fit: BoxFit.contain,
                        );
                      },
                    ),
                  ),
                ],
                Align(
                  alignment: Alignment.centerRight,
                  widthFactor: 1,
                  child: Text(
                    _timeText,
                    style: AppTextStyles.textFieldLabelStyle.copyWith(color: AppColor.textColor(context)),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildMessageContent(BuildContext context) {
    var content = message.content;

    content = content.replaceAllMapped(
      RegExp(r'(\*\*[^*\n]+:\*\*)'),
      (match) => '${match.group(1)}  \n',
    );
    content = content.replaceAllMapped(
      RegExp(r'(Link:)\s*', caseSensitive: false),
      (match) => '${match.group(1)}  \n',
    );

    return MarkdownBody(
      data: content,
      selectable: true,
      onTapLink: (text, href, title) async {
        if (href == null || href.isEmpty) return;

        final uri = Uri.tryParse(href);

        if (uri == null) return;

        await launchUrl(
          uri,
          mode: LaunchMode.externalApplication,
        );
      },
      styleSheet: MarkdownStyleSheet(
        p: AppTextStyles.bodyText2.copyWith(
          color: message.isError ? Colors.red : AppColor.textStyleColor(context),
        ),
        strong: AppTextStyles.bodyText2.copyWith(
          color: message.isError ? Colors.red : AppColor.textStyleColor(context),
          fontWeight: FontWeight.bold,
        ),
        listBullet: AppTextStyles.bodyText2.copyWith(
          color: message.isError ? Colors.red : AppColor.textStyleColor(context),
        ),
        a: AppTextStyles.bodyText2.copyWith(
          color: AppColor.primary10,
          decoration: TextDecoration.underline,
        ),
      ),
    );
  }
}