// ignore_for_file: deprecated_member_use

import 'package:didvan/services/ai_rag_service.dart';
import 'package:didvan/services/ai_voice_service.dart';
import 'package:didvan/services/network/request.dart';
import 'package:didvan/views/widgets/didvan/text.dart';
import 'package:didvan/views/widgets/ai_voice_chat_dialog.dart';
import 'package:didvan/providers/user.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:flutter_spinkit/flutter_spinkit.dart';
import 'package:provider/provider.dart';
import 'package:record/record.dart';
import 'package:path_provider/path_provider.dart';
import 'package:just_audio/just_audio.dart';
import 'dart:ui';
import 'dart:io';

class AiChatDialog extends StatefulWidget {
  const AiChatDialog({super.key});

  @override
  State<AiChatDialog> createState() => _AiChatDialogState();
}

class _AiChatDialogState extends State<AiChatDialog>
    with TickerProviderStateMixin {
  final TextEditingController _messageController = TextEditingController();
  final ScrollController _scrollController = ScrollController();
  final List<ChatMessage> _messages = [];
  bool _isLoading = false;
  bool _isRecording = false;
  late AnimationController _animationController;
  late AnimationController _pulseController;
  final AudioRecorder _audioRecorder = AudioRecorder();
  final AudioPlayer _audioPlayer = AudioPlayer();
  String? _recordingPath;
  String? _currentPlayingUrl;
  bool _isPlaying = false;

  @override
  void initState() {
    super.initState();
    _animationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 600),
    );

    _audioPlayer.playerStateStream.listen((state) {
      if (mounted) {
        setState(() {
          _isPlaying = state.playing;
          if (state.processingState == ProcessingState.completed) {
            _isPlaying = false;
            _currentPlayingUrl = null;
          }
        });
      }
    });
    _pulseController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 1500),
    )..repeat(reverse: true);

    _animationController.forward();

    Future.delayed(const Duration(milliseconds: 500), () {
      if (mounted) {
        setState(() {
          _messages.add(ChatMessage(
            text:
                'سلام! 👋\n\nمن دستیار هوشمند دیدوان هستم. می‌تونم در مورد اخبار، تحلیل‌ها و محتوای دیدوان بهتون کمک کنم.\n\nچه سوالی دارید؟ 😊',
            isUser: false,
            timestamp: DateTime.now(),
          ));
        });
        _scrollToBottom();
      }
    });
  }

  @override
  void dispose() {
    _messageController.dispose();
    _scrollController.dispose();
    _animationController.dispose();
    _pulseController.dispose();
    _audioRecorder.dispose();
    _audioPlayer.dispose();
    super.dispose();
  }

  void _scrollToBottom() {
    Future.delayed(const Duration(milliseconds: 100), () {
      if (_scrollController.hasClients) {
        _scrollController.animateTo(
          _scrollController.position.maxScrollExtent,
          duration: const Duration(milliseconds: 300),
          curve: Curves.easeOut,
        );
      }
    });
  }

  Future<void> _toggleAudioPlayback(String audioUrl) async {
    try {
      if (_isPlaying && _currentPlayingUrl == audioUrl) {
        await _audioPlayer.pause();
        setState(() {
          _isPlaying = false;
        });
      } else {
        if (_currentPlayingUrl != audioUrl) {
          final token = RequestService.token;
          debugPrint('🎵 Audio URL: $audioUrl');
          debugPrint('🔑 Token exists: ${token != null && token.isNotEmpty}');

          AudioSource? audioSource;

          try {
            if (token != null && token.isNotEmpty) {
              audioSource = AudioSource.uri(
                Uri.parse(audioUrl),
                headers: {
                  'Authorization': 'Bearer $token',
                },
              );
              debugPrint('✅ Trying with token (no Bearer prefix)');
            } else {
              audioSource = AudioSource.uri(
                Uri.parse(audioUrl),
                headers: {
                  'Authorization': 'Bearer $token',
                },
              );
              debugPrint('✅ Trying without Authorization header');
            }

            await _audioPlayer.setAudioSource(audioSource);
            setState(() {
              _currentPlayingUrl = audioUrl;
            });
          } catch (headerError) {
            debugPrint(
                '⚠️ Error with headers, trying simple URL: $headerError');
            await _audioPlayer.setUrl(audioUrl);
            setState(() {
              _currentPlayingUrl = audioUrl;
            });
          }
        }
        await _audioPlayer.play();
        setState(() {
          _isPlaying = true;
        });
      }
    } catch (e) {
      debugPrint('❌ Error playing audio: $e');
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(content: Text('خطا در پخش صوت')),
        );
      }
    }
  }

  Future<void> _sendMessage() async {
    final message = _messageController.text.trim();
    if (message.isEmpty) return;

    setState(() {
      _messages.add(ChatMessage(
        text: message,
        isUser: true,
        timestamp: DateTime.now(),
      ));
      _isLoading = true;
      _messageController.clear();
    });

    _scrollToBottom();

    final response = await AiRagService.sendMessage(message);

    setState(() {
      _messages.add(ChatMessage(
        text: response.output,
        isUser: false,
        timestamp: DateTime.now(),
        sources: response.sources,
        audioUrl: response.audioUrl,
      ));
      _isLoading = false;
    });

    _scrollToBottom();
  }

  Future<void> _startRecording() async {
    try {
      if (await _audioRecorder.hasPermission()) {
        setState(() {
          _isRecording = true;
        });

        final directory = await getTemporaryDirectory();
        final timestamp = DateTime.now().millisecondsSinceEpoch;
        _recordingPath = '${directory.path}/voice_$timestamp.m4a';

        await _audioRecorder.start(
          const RecordConfig(
            encoder: AudioEncoder.aacLc,
          ),
          path: _recordingPath!,
        );

        await Future.delayed(const Duration(milliseconds: 200));
      }
    } catch (e) {
      setState(() {
        _isRecording = false;
      });
      debugPrint('Error starting recording: $e');
    }
  }

  Future<void> _stopRecording() async {
    try {
      final path = await _audioRecorder.stop();

      setState(() {
        _isRecording = false;
      });

      if (path != null) {
        setState(() {
          _messages.add(ChatMessage(
            text: '🎤 پیام صوتی',
            isUser: true,
            timestamp: DateTime.now(),
          ));
          _isLoading = true;
        });

        _scrollToBottom();

        final response = await AiVoiceService.uploadVoice(path);

        if (response.isSuccess && response.text.isNotEmpty) {
          final ragResponse = await AiRagService.sendMessage(response.text);

          setState(() {
            _messages.add(ChatMessage(
              text: ragResponse.output,
              isUser: false,
              timestamp: DateTime.now(),
              sources: ragResponse.sources,
              audioUrl: ragResponse.audioUrl,
            ));
            _isLoading = false;
          });
        } else {
          setState(() {
            _messages.add(ChatMessage(
              text: 'خطا در پردازش پیام صوتی',
              isUser: false,
              timestamp: DateTime.now(),
            ));
            _isLoading = false;
          });
        }

        _scrollToBottom();

        try {
          await File(path).delete();
        } catch (e) {
          debugPrint('Error deleting temp file: $e');
        }
      }
    } catch (e) {
      setState(() {
        _isRecording = false;
        _isLoading = false;
      });
      debugPrint('Error stopping recording: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Dialog(
      backgroundColor: Colors.transparent,
      insetPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 24),
      child: ScaleTransition(
        scale: CurvedAnimation(
          parent: _animationController,
          curve: Curves.elasticOut,
        ),
        child: BackdropFilter(
          filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
          child: Container(
            constraints: const BoxConstraints(maxWidth: 500, maxHeight: 600),
            decoration: BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
                colors: [
                  Colors.white.withOpacity(0.95),
                  const Color(0xFFF8F9FF).withOpacity(0.95),
                ],
              ),
              borderRadius: BorderRadius.circular(24),
              border: Border.all(
                color: Colors.white.withOpacity(0.6),
                width: 1.5,
              ),
              boxShadow: [
                BoxShadow(
                  color: const Color(0xFF0066AA).withOpacity(0.15),
                  blurRadius: 30,
                  spreadRadius: 0,
                  offset: const Offset(0, 15),
                ),
                BoxShadow(
                  color: Colors.black.withOpacity(0.08),
                  blurRadius: 15,
                  spreadRadius: -3,
                  offset: const Offset(0, 8),
                ),
              ],
            ),
            child: ClipRRect(
              borderRadius: BorderRadius.circular(24),
              child: Column(
                children: [
                  _buildHeader(context),
                  Expanded(
                    child: _buildMessageList(),
                  ),
                  if (_isLoading) _buildLoadingIndicator(),
                  // if (_isRecording) _buildRecordingIndicator(),
                  _buildInputField(),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }

  Widget _buildHeader(BuildContext context) {
    return Container(
      padding: const EdgeInsets.fromLTRB(16, 16, 16, 14),
      decoration: BoxDecoration(
        gradient: const LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [
            Color(0xFF0066AA),
            Color(0xFF0088DD),
            Color(0xFF00AAFF),
          ],
        ),
        boxShadow: [
          BoxShadow(
            color: const Color(0xFF0066AA).withOpacity(0.2),
            blurRadius: 10,
            offset: const Offset(0, 3),
          ),
        ],
      ),
      child: Row(
        children: [
          Stack(
            children: [
              AnimatedBuilder(
                animation: _pulseController,
                builder: (context, child) {
                  return Container(
                    width: 44,
                    height: 44,
                    decoration: BoxDecoration(
                      shape: BoxShape.circle,
                      boxShadow: [
                        BoxShadow(
                          color: Colors.white
                              .withOpacity(0.25 * _pulseController.value),
                          blurRadius: 15 + (8 * _pulseController.value),
                          spreadRadius: 1 + (2 * _pulseController.value),
                        ),
                      ],
                    ),
                  );
                },
              ),
              Container(
                width: 44,
                height: 44,
                decoration: BoxDecoration(
                  color: Colors.white,
                  shape: BoxShape.circle,
                  boxShadow: [
                    BoxShadow(
                      color: Colors.black.withOpacity(0.15),
                      blurRadius: 8,
                      offset: const Offset(0, 3),
                    ),
                  ],
                ),
                padding: const EdgeInsets.all(10),
                child: SvgPicture.asset(
                  'lib/assets/icons/live ai.svg',
                  colorFilter: const ColorFilter.mode(
                    Color(0xFF0066AA),
                    BlendMode.srcIn,
                  ),
                ),
              ),
            ],
          ),
          const SizedBox(width: 12),
          const Expanded(
            child: DidvanText(
              'دستیار هوشمند دیدوان',
              fontSize: 13,
              fontWeight: FontWeight.bold,
              color: Colors.white,
            ),
          ),
          Container(
            margin: const EdgeInsets.only(left: 6),
            decoration: const BoxDecoration(
              gradient: LinearGradient(
                begin: AlignmentGeometry.topLeft,
                end: AlignmentGeometry.bottomRight,
                colors: [
                  Color.fromARGB(255, 1, 35, 72),
                  Color.fromARGB(255, 27, 60, 89),
                  Color.fromARGB(255, 25, 93, 128),
                  Color.fromARGB(255, 0, 126, 167),
                ],
              ),
              shape: BoxShape.circle,
            ),
            child: IconButton(
              icon: const Icon(Icons.headset_mic_rounded,
                  color: Colors.white, size: 20),
              onPressed: () {
                Navigator.pop(context);
                showDialog(
                  context: context,
                  barrierDismissible: false,
                  builder: (context) => const AiVoiceChatDialog(),
                );
              },
              splashRadius: 20,
              tooltip: 'گفتگوی صوتی',
            ),
          ),
          Container(
            decoration: BoxDecoration(
              color: Colors.white.withOpacity(0.2),
              shape: BoxShape.circle,
            ),
            child: IconButton(
              icon: const Icon(Icons.close_rounded,
                  color: Colors.white, size: 20),
              onPressed: () => Navigator.pop(context),
              splashRadius: 20,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildMessageList() {
    return Container(
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topCenter,
          end: Alignment.bottomCenter,
          colors: [
            Colors.white.withOpacity(0.5),
            const Color(0xFFF8F9FF).withOpacity(0.3),
          ],
        ),
      ),
      child: ListView.builder(
        controller: _scrollController,
        padding: const EdgeInsets.fromLTRB(14, 14, 14, 10),
        itemCount: _messages.length,
        itemBuilder: (context, index) {
          final message = _messages[index];
          return _buildMessageBubble(message);
        },
      ),
    );
  }

  Widget _buildMessageBubble(ChatMessage message) {
    return TweenAnimationBuilder<double>(
      tween: Tween(begin: 0.0, end: 1.0),
      duration: const Duration(milliseconds: 400),
      curve: Curves.easeOutCubic,
      builder: (context, value, child) {
        return Transform.translate(
          offset: Offset(0, 20 * (1 - value)),
          child: Opacity(
            opacity: value,
            child: child,
          ),
        );
      },
      child: Padding(
        padding: const EdgeInsets.only(bottom: 12),
        child: Row(
          mainAxisAlignment:
              message.isUser ? MainAxisAlignment.start : MainAxisAlignment.end,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            if (message.isUser) _buildUserAvatar(),
            if (message.isUser) const SizedBox(width: 8),
            Flexible(
              child: Column(
                crossAxisAlignment: message.isUser
                    ? CrossAxisAlignment.start
                    : CrossAxisAlignment.end,
                children: [
                  Container(
                    padding: const EdgeInsets.symmetric(
                        horizontal: 12, vertical: 10),
                    decoration: BoxDecoration(
                      gradient: !message.isUser
                          ? const LinearGradient(
                              begin: Alignment.topLeft,
                              end: Alignment.bottomRight,
                              colors: [
                                Color(0xFF0066AA),
                                Color(0xFF0088DD),
                              ],
                            )
                          : null,
                      color: !message.isUser ? null : const Color(0xFFF5F7FA),
                      borderRadius: BorderRadius.only(
                        topLeft: Radius.circular(!message.isUser ? 4 : 16),
                        topRight: const Radius.circular(16),
                        bottomLeft: const Radius.circular(16),
                        bottomRight: Radius.circular(!message.isUser ? 16 : 4),
                      ),
                      border: !message.isUser
                          ? null
                          : Border.all(
                              color: const Color(0xFFE0E5EC).withOpacity(0.5),
                              width: 1,
                            ),
                      boxShadow: [
                        BoxShadow(
                          color: !message.isUser
                              ? const Color(0xFF0066AA).withOpacity(0.2)
                              : Colors.black.withOpacity(0.03),
                          blurRadius: 8,
                          offset: const Offset(0, 3),
                        ),
                      ],
                    ),
                    child: DidvanText(
                      message.text,
                      color: !message.isUser
                          ? Colors.white
                          : const Color(0xFF1A1A1A),
                      fontSize: 13.5,
                    ),
                  ),
                  const SizedBox(height: 4),
                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 3),
                    child: DidvanText(
                      _formatTime(message.timestamp),
                      fontSize: 10,
                      color: Colors.grey.shade400,
                    ),
                  ),
                  if (message.sources.isNotEmpty) ...[
                    const SizedBox(height: 8),
                    Container(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 10, vertical: 6),
                      decoration: BoxDecoration(
                        gradient: LinearGradient(
                          colors: [
                            const Color(0xFF0066AA).withOpacity(0.08),
                            const Color(0xFF0088DD).withOpacity(0.05),
                          ],
                        ),
                        borderRadius: BorderRadius.circular(10),
                        border: Border.all(
                          color: const Color(0xFF0066AA).withOpacity(0.2),
                          width: 0.8,
                        ),
                      ),
                      child: Row(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          Container(
                            padding: const EdgeInsets.all(3),
                            decoration: BoxDecoration(
                              color: const Color(0xFF0066AA).withOpacity(0.1),
                              shape: BoxShape.circle,
                            ),
                            child: const Icon(
                              Icons.bookmark_rounded,
                              size: 12,
                              color: Color(0xFF0066AA),
                            ),
                          ),
                          const SizedBox(width: 6),
                          DidvanText(
                            'منابع: ${message.sources.join(", ")}',
                            fontSize: 11,
                            color: const Color(0xFF0066AA),
                            fontWeight: FontWeight.w600,
                          ),
                        ],
                      ),
                    ),
                  ],
                  // if (!message.isUser &&
                  //     message.audioUrl != null &&
                  //     message.audioUrl!.isNotEmpty) ...[
                  //   const SizedBox(height: 8),
                  //   InkWell(
                  //     onTap: () => _toggleAudioPlayback(message.audioUrl!),
                  //     borderRadius: BorderRadius.circular(20),
                  //     child: Container(
                  //       padding: const EdgeInsets.symmetric(
                  //           horizontal: 12, vertical: 8),
                  //       decoration: BoxDecoration(
                  //         gradient: LinearGradient(
                  //           colors: [
                  //             const Color(0xFF0066AA).withOpacity(0.1),
                  //             const Color(0xFF0088DD).withOpacity(0.08),
                  //           ],
                  //         ),
                  //         borderRadius: BorderRadius.circular(20),
                  //         border: Border.all(
                  //           color: const Color(0xFF0066AA).withOpacity(0.3),
                  //           width: 1,
                  //         ),
                  //       ),
                  //       child: Row(
                  //         mainAxisSize: MainAxisSize.min,
                  //         children: [
                  //           Container(
                  //             padding: const EdgeInsets.all(4),
                  //             decoration: const BoxDecoration(
                  //               gradient: LinearGradient(
                  //                 colors: [
                  //                   Color(0xFF0066AA),
                  //                   Color(0xFF0088DD),
                  //                 ],
                  //               ),
                  //               shape: BoxShape.circle,
                  //             ),
                  //             child: Icon(
                  //               (_isPlaying &&
                  //                       _currentPlayingUrl == message.audioUrl)
                  //                   ? Icons.pause_rounded
                  //                   : Icons.play_arrow_rounded,
                  //               size: 16,
                  //               color: Colors.white,
                  //             ),
                  //           ),
                  //           const SizedBox(width: 8),
                  //           DidvanText(
                  //             (_isPlaying &&
                  //                     _currentPlayingUrl == message.audioUrl)
                  //                 ? 'در حال پخش...'
                  //                 : 'پخش صوتی پاسخ',
                  //             fontSize: 12,
                  //             color: const Color(0xFF0066AA),
                  //             fontWeight: FontWeight.w600,
                  //           ),
                  //         ],
                  //       ),
                  //     ),
                  //   ),
                  // ],
                ],
              ),
            ),
            if (!message.isUser) const SizedBox(width: 8),
            if (!message.isUser) _buildAiAvatar(),
          ],
        ),
      ),
    );
  }

  Widget _buildAiAvatar() {
    return Container(
      width: 32,
      height: 32,
      decoration: BoxDecoration(
        gradient: const LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [
            Color(0xFF0066AA),
            Color(0xFF00AAFF),
          ],
        ),
        shape: BoxShape.circle,
        boxShadow: [
          BoxShadow(
            color: const Color(0xFF0066AA).withOpacity(0.3),
            blurRadius: 8,
            offset: const Offset(0, 3),
          ),
        ],
      ),
      padding: const EdgeInsets.all(7),
      child: SvgPicture.asset(
        'lib/assets/icons/live ai.svg',
        colorFilter: const ColorFilter.mode(
          Colors.white,
          BlendMode.srcIn,
        ),
      ),
    );
  }

  Widget _buildUserAvatar() {
    return Consumer<UserProvider>(
      builder: (context, userProvider, _) {
        if (userProvider.user.photo != null &&
            userProvider.user.photo!.isNotEmpty) {
          return Container(
            width: 40,
            height: 40,
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              boxShadow: [
                BoxShadow(
                  color: Colors.grey.withOpacity(0.25),
                  blurRadius: 6,
                  offset: const Offset(0, 2),
                ),
              ],
            ),
            child: ClipRRect(
              borderRadius: BorderRadius.circular(16),
              child: Image.network(
                userProvider.user.photo!,
                fit: BoxFit.cover,
                errorBuilder: (context, error, stackTrace) {
                  return _buildDefaultUserAvatar();
                },
              ),
            ),
          );
        }
        return _buildDefaultUserAvatar();
      },
    );
  }

  Widget _buildDefaultUserAvatar() {
    return Container(
      width: 40,
      height: 40,
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [
            Colors.grey.shade400,
            Colors.grey.shade500,
          ],
        ),
        shape: BoxShape.circle,
        boxShadow: [
          BoxShadow(
            color: Colors.grey.withOpacity(0.25),
            blurRadius: 6,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: const Icon(
        Icons.person_rounded,
        size: 18,
        color: Colors.white,
      ),
    );
  }

  Widget _buildLoadingIndicator() {
    return Padding(
      padding: const EdgeInsets.fromLTRB(14, 6, 14, 10),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.end,
        children: [
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
            decoration: BoxDecoration(
              color: const Color(0xFFF5F7FA),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(
                color: const Color(0xFFE0E5EC).withOpacity(0.5),
                width: 1,
              ),
              boxShadow: [
                BoxShadow(
                  color: Colors.black.withOpacity(0.03),
                  blurRadius: 8,
                  offset: const Offset(0, 3),
                ),
              ],
            ),
            child: Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                Text(
                  'در حال فکر کردن...',
                  style: TextStyle(
                    color: Colors.grey.shade600,
                    fontSize: 12,
                    fontStyle: FontStyle.italic,
                  ),
                ),
                const SizedBox(width: 10),
                const SpinKitThreeBounce(
                  color: Color(0xFF0066AA),
                  size: 14,
                ),
              ],
            ),
          ),
          const SizedBox(width: 8),
          _buildAiAvatar(),
        ],
      ),
    );
  }

  Widget _buildRecordingIndicator() {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
      margin: const EdgeInsets.only(bottom: 6),
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [
            const Color(0xFFFF3366).withOpacity(0.1),
            const Color(0xFFFF6699).withOpacity(0.05),
          ],
        ),
        border: Border.all(
          color: const Color(0xFFFF3366).withOpacity(0.3),
          width: 1,
        ),
      ),
      child: Row(
        children: [
          Container(
            width: 8,
            height: 8,
            decoration: BoxDecoration(
              color: const Color(0xFFFF3366),
              shape: BoxShape.circle,
              boxShadow: [
                BoxShadow(
                  color: const Color(0xFFFF3366).withOpacity(0.4),
                  blurRadius: 6,
                  spreadRadius: 1,
                ),
              ],
            ),
          ),
          const SizedBox(width: 10),
          const Expanded(
            child: DidvanText(
              '🎙️ در حال ضبط...',
              fontSize: 12,
              color: Color(0xFFFF3366),
              fontWeight: FontWeight.w600,
            ),
          ),
          const Icon(
            Icons.mic_rounded,
            color: Color(0xFFFF3366),
            size: 16,
          ),
        ],
      ),
    );
  }

  Widget _buildInputField() {
    return Container(
      padding: const EdgeInsets.all(14),
      decoration: BoxDecoration(
        color: Colors.white.withOpacity(0.95),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.06),
            blurRadius: 15,
            offset: const Offset(0, -3),
          ),
        ],
      ),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.end,
        children: [
          GestureDetector(
            onTap: _isLoading || _isRecording ? null : _sendMessage,
            child: AnimatedContainer(
              duration: const Duration(milliseconds: 200),
              width: 44,
              height: 55,
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                  colors: (_isLoading || _isRecording)
                      ? [Colors.grey.shade300, Colors.grey.shade400]
                      : [const Color(0xFF0066AA), const Color(0xFF00AAFF)],
                ),
                shape: BoxShape.circle,
                boxShadow: [
                  BoxShadow(
                    color: ((_isLoading || _isRecording)
                            ? Colors.grey.shade400
                            : const Color(0xFF0066AA))
                        .withOpacity(0.35),
                    blurRadius: 12,
                    offset: const Offset(0, 3),
                  ),
                ],
              ),
              child: _isLoading
                  ? const Padding(
                      padding: EdgeInsets.all(11),
                      child: CircularProgressIndicator(
                        strokeWidth: 2,
                        valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
                      ),
                    )
                  : Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: SvgPicture.asset(
                        'lib/assets/icons/send.svg',
                        color: Colors.white,
                        height: 5,
                      ),
                    ),
            ),
          ),
          const SizedBox(width: 10),
          Expanded(
            child: Container(
              constraints: const BoxConstraints(maxHeight: 100),
              decoration: BoxDecoration(
                color: const Color(0xFFF5F7FA),
                borderRadius: BorderRadius.circular(22),
                border: Border.all(
                  color: const Color(0xFFE0E5EC).withOpacity(0.5),
                  width: 1.2,
                ),
              ),
              child: TextField(
                controller: _messageController,
                maxLines: null,
                textInputAction: TextInputAction.send,
                onSubmitted: (_) => _sendMessage(),
                style: const TextStyle(
                  fontSize: 13.5,
                  color: Color(0xFF1A1A1A),
                ),
                decoration: InputDecoration(
                  hintText: 'پیام خود را بنویسید...',
                  hintStyle: TextStyle(
                    color: Colors.grey.shade400,
                    fontSize: 13,
                  ),
                  border: InputBorder.none,
                  contentPadding: const EdgeInsets.symmetric(
                    horizontal: 16,
                    vertical: 12,
                  ),
                ),
              ),
            ),
          ),

          // GestureDetector(
          //   onTap: () {
          //     if (!_isLoading) {
          //       if (_isRecording) {
          //         _stopRecording();
          //       } else {
          //         _startRecording();
          //       }
          //     }
          //   },
          //   child: AnimatedContainer(
          //     duration: const Duration(milliseconds: 200),
          //     width: 44,
          //     height: 44,
          //     decoration: BoxDecoration(
          //       gradient: LinearGradient(
          //         begin: Alignment.topLeft,
          //         end: Alignment.bottomRight,
          //         colors: _isRecording
          //             ? [const Color(0xFFFF3366), const Color(0xFFFF6699)]
          //             : [const Color(0xFF6B7280), const Color(0xFF9CA3AF)],
          //       ),
          //       shape: BoxShape.circle,
          //       boxShadow: [
          //         BoxShadow(
          //           color: (_isRecording
          //                   ? const Color(0xFFFF3366)
          //                   : const Color(0xFF6B7280))
          //               .withOpacity(0.35),
          //           blurRadius: _isRecording ? 16 : 10,
          //           offset: const Offset(0, 3),
          //         ),
          //       ],
          //     ),
          //     child: Icon(
          //       _isRecording ? Icons.stop_rounded : Icons.mic_rounded,
          //       color: Colors.white,
          //       size: 20,
          //     ),
          //   ),
          // ),
        ],
      ),
    );
  }

  String _formatTime(DateTime time) {
    final hour = time.hour.toString().padLeft(2, '0');
    final minute = time.minute.toString().padLeft(2, '0');
    return '$hour:$minute';
  }
}

class ChatMessage {
  final String text;
  final bool isUser;
  final DateTime timestamp;
  final List<int> sources;
  final String? audioUrl;

  ChatMessage({
    required this.text,
    required this.isUser,
    required this.timestamp,
    this.sources = const [],
    this.audioUrl,
  });
}