import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:sixam_mart_store/features/auth/controllers/auth_controller.dart';
import 'package:sixam_mart_store/features/chat/controllers/chat_controller.dart';
import 'package:sixam_mart_store/features/notification/domain/models/notification_body_model.dart';
import 'package:sixam_mart_store/features/chat/domain/models/conversation_model.dart';
import 'package:sixam_mart_store/helper/responsive_helper.dart';
import 'package:sixam_mart_store/helper/route_helper.dart';
import 'package:sixam_mart_store/util/app_constants.dart';
import 'package:sixam_mart_store/util/dimensions.dart';
import 'package:sixam_mart_store/util/images.dart';
import 'package:sixam_mart_store/util/styles.dart';
import 'package:sixam_mart_store/common/widgets/custom_image_widget.dart';
import 'package:sixam_mart_store/common/widgets/custom_snackbar_widget.dart';
import 'package:sixam_mart_store/common/widgets/paginated_list_widget.dart';
import 'package:sixam_mart_store/features/chat/widgets/message_bubble_widget.dart';

import '../domain/models/message_model.dart';

class ChatScreen extends StatefulWidget {
  final NotificationBodyModel? notificationBody;
  final User? user;
  final int? conversationId;
  final bool fromNotification;
  const ChatScreen({super.key, required this.notificationBody, required this.user, this.conversationId, this.fromNotification = false});

  @override
  State<ChatScreen> createState() => _ChatScreenState();
}

class _ChatScreenState extends State<ChatScreen> {
  final ScrollController _scrollController = ScrollController();
  final TextEditingController _inputMessageController = TextEditingController();
  late bool _isLoggedIn;

  @override
  void initState() {
    super.initState();

    _isLoggedIn = Get.find<AuthController>().isLoggedIn();
    Get.find<ChatController>().getMessages(1, widget.notificationBody!, widget.user, widget.conversationId, firstLoad: true);

  }

  @override
  Widget build(BuildContext context) {
    return GetBuilder<ChatController>(builder: (chatController) {
      // String? baseUrl = '';
      // if(widget.notificationBody!.customerId != null || (widget.notificationBody!.conversationId != null && widget.notificationBody!.type == 'customer')) {
      //   baseUrl = ImageType.customer_image_url.name;
      // }else {
      //   baseUrl = ImageType.delivery_man_image_url.name;
      // }


      return PopScope(
        canPop: Navigator.canPop(context),
        onPopInvokedWithResult: (didPop, result) async{
          if(widget.fromNotification && !didPop) {
            Get.offAllNamed(RouteHelper.getInitialRoute());
          } else {
            return;
          }
        },
        child: Scaffold(
          appBar: AppBar(
            leading: IconButton(onPressed: () {
              if(widget.fromNotification){
                Get.offAllNamed(RouteHelper.getInitialRoute());
              }else{
                Get.back();
              }
            },
            icon: const Icon(Icons.arrow_back_ios_rounded)),
            title: Row(
              children: [
                ClipOval(child: chatController.messageModel?.conversation!.receiver!.imageFullUrl != null ? CustomImageWidget(
                  image: chatController.messageModel!.conversation!.receiver!.imageFullUrl ?? '',
                  fit: BoxFit.cover, height: 40, width: 40,
                ) : const SizedBox()),
                SizedBox(width: 6),
                Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
                  Text(
                    chatController.messageModel != null ? '${chatController.messageModel?.conversation!.receiver!.fName}'
                    ' ${chatController.messageModel!.conversation!.receiver!.lName}' : 'receiver_name'.tr,
                      style: robotoMedium.copyWith(fontSize: Dimensions.fontSizeLarge)
                  ),
                  chatController.messageModel?.conversation!.receiver!.phone != null ?  Text(
                    ' ${chatController.messageModel!.conversation!.receiver!.phone}',
                    style: robotoRegular.copyWith(fontSize: Dimensions.fontSizeSmall),
                  ) : SizedBox.shrink(),
                ]),
              ],
            ),
            backgroundColor: Theme.of(context).cardColor,
            scrolledUnderElevation: 0,
            elevation: 0,
          ),

          body: _isLoggedIn ? SafeArea(
            child: Center(
              child: SizedBox(
                width: MediaQuery.of(context).size.width,
                child: Column(children: [

                  GetBuilder<ChatController>(builder: (chatController) {
                      return Expanded(child: chatController.messageModel != null ? chatController.messageModel!.messages!.isNotEmpty ? SingleChildScrollView(
                        controller: _scrollController,
                        reverse: true,
                        child: PaginatedListWidget(
                          scrollController: _scrollController,
                          totalSize: chatController.messageModel!.totalSize,
                          offset: chatController.messageModel!.offset,
                          onPaginate: (int? offset) async => await chatController.getMessages(
                            offset!, widget.notificationBody!, widget.user, widget.conversationId,
                          ),
                          productView: ListView.builder(
                            physics: const NeverScrollableScrollPhysics(),
                            shrinkWrap: true,
                            reverse: true,
                            itemCount: chatController.messageModel!.messages!.length,
                            itemBuilder: (context, index) {
                              Message? previousMessage = index < chatController.messageModel!.messages!.length - 1
                                  ? chatController.messageModel!.messages![index + 1]
                                  : null;
                              Message? nextMessage = index > 0
                                  ? chatController.messageModel!.messages![index - 1]
                                  : null;
                                  
                              return MessageBubbleWidget(
                                message: chatController.messageModel!.messages![index],
                                previousMessage: previousMessage,
                                nextMessage: nextMessage,
                                user: chatController.messageModel!.conversation!.receiver,
                                sender: chatController.messageModel!.conversation!.sender,
                                userType: widget.notificationBody!.customerId != null || (widget.notificationBody!.conversationId != null && widget.notificationBody!.type == 'customer')
                                    ? AppConstants.customer : AppConstants.deliveryMan,
                              );
                            },
                          ),
                        ),
                      ) : const SizedBox() : const Center(child: CircularProgressIndicator()));
                    }
                  ),

                  (chatController.messageModel != null && (chatController.messageModel!.status! || chatController.messageModel!.messages!.isEmpty)) ?  Container(
                    color: Theme.of(context).cardColor,
                    child: Column(children: [

                      GetBuilder<ChatController>(builder: (chatController) {
                        return chatController.chatImage!.isNotEmpty ? SizedBox(height: 100,
                          child: ListView.builder(
                            scrollDirection: Axis.horizontal,
                            shrinkWrap: true,
                            itemCount: chatController.chatImage!.length,
                            itemBuilder: (BuildContext context, index){
                              return  chatController.chatImage!.isNotEmpty ? Padding(
                                padding: const EdgeInsets.all(8.0),
                                child: Stack(children: [

                                  Container(width: 100, height: 100,
                                    decoration: const BoxDecoration(color: Colors.white, borderRadius: BorderRadius.all(Radius.circular(20))),
                                    child: ClipRRect(
                                      borderRadius: const BorderRadius.all(Radius.circular(Dimensions.paddingSizeDefault)),
                                      child: ResponsiveHelper.isWeb() ? Image.network(
                                        chatController.chatImage![index].path, width: 100, height: 100, fit: BoxFit.cover,
                                      ) : Image.file(
                                        File(chatController.chatImage![index].path), width: 100, height: 100, fit: BoxFit.cover,
                                      ),
                                    ),
                                  ),

                                  Positioned(top:0, right:0,
                                    child: InkWell(
                                      onTap : () => chatController.removeImage(index),
                                      child: Container(
                                        decoration: const BoxDecoration(
                                            color: Colors.white,
                                            borderRadius: BorderRadius.all(Radius.circular(Dimensions.paddingSizeDefault))
                                        ),
                                        child: const Padding(
                                          padding: EdgeInsets.all(4.0),
                                          child: Icon(Icons.clear, color: Colors.red, size: 15),
                                        ),
                                      ),
                                    ),
                                  )],
                                ),
                              ) : const SizedBox();
                            }
                          ),
                        ) : const SizedBox();
                      }),

                      Row(children: [
                        InkWell(
                          onTap: () async {
                            Get.find<ChatController>().pickImage(false);
                          },
                          child: Padding(
                            padding: const EdgeInsets.symmetric(horizontal: Dimensions.paddingSizeDefault),
                            child: Image.asset(Images.image, width: 25, height: 25, color: Theme.of(context).hintColor),
                          ),
                        ),

                        SizedBox(
                          height: 25,
                          child: VerticalDivider(width: 0, thickness: 1, color: Theme.of(context).hintColor),
                        ),
                        const SizedBox(width: Dimensions.paddingSizeDefault),

                        Expanded(
                          child: TextField(
                            inputFormatters: [LengthLimitingTextInputFormatter(Dimensions.messageInputLength)],
                            controller: _inputMessageController,
                            textCapitalization: TextCapitalization.sentences,
                            style: robotoRegular,
                            keyboardType: TextInputType.multiline,
                            maxLines: null,
                            decoration: InputDecoration(
                              border: InputBorder.none,
                              hintText: 'type_a_message'.tr,
                              hintStyle: robotoRegular.copyWith(color: Theme.of(context).hintColor, fontSize: Dimensions.fontSizeLarge),
                            ),
                            onSubmitted: (String newText) {
                              if(newText.trim().isNotEmpty && !Get.find<ChatController>().isSendButtonActive) {
                                Get.find<ChatController>().toggleSendButtonActivity();
                              }else if(newText.isEmpty && Get.find<ChatController>().isSendButtonActive) {
                                Get.find<ChatController>().toggleSendButtonActivity();
                              }
                            },
                            onChanged: (String newText) {
                              if(newText.trim().isNotEmpty && !Get.find<ChatController>().isSendButtonActive) {
                                Get.find<ChatController>().toggleSendButtonActivity();
                              }else if(newText.isEmpty && Get.find<ChatController>().isSendButtonActive) {
                                Get.find<ChatController>().toggleSendButtonActivity();
                              }
                            },
                          ),
                        ),

                        GetBuilder<ChatController>(builder: (chatController) {
                            return !chatController.isLoading ? InkWell(
                              onTap: () async {
                                if(chatController.isSendButtonActive) {
                                  if(chatController.chatImage!.length > 3){
                                    showCustomSnackBar('you_do_not_send_more_then_3_photos'.tr);
                                  }else{
                                    chatController.sendMessage(
                                      message: _inputMessageController.text, notificationBody: widget.notificationBody, conversationId: widget.conversationId,
                                    ).then((success) {
                                      _inputMessageController.clear();
                                      if(success){
                                        Future.delayed(const Duration(seconds: 2),() {
                                          chatController.getMessages(1, widget.notificationBody!, widget.user, widget.conversationId);
                                        });
                                      }
                                    });
                                  }

                                }else{
                                  showCustomSnackBar('write_somethings'.tr);
                                }
                              },
                              child: Padding(
                                padding: const EdgeInsets.symmetric(horizontal: Dimensions.paddingSizeDefault),
                                child: Image.asset(
                                  Images.send, width: 25, height: 25,
                                  color: chatController.isSendButtonActive ? Theme.of(context).primaryColor : Theme.of(context).hintColor,
                                ),
                              ),
                            ) : const Padding(
                              padding: EdgeInsets.symmetric(horizontal: Dimensions.paddingSizeDefault),
                              child: SizedBox(
                                width: 25, height: 25,
                                child: CircularProgressIndicator(),
                              ),
                            ) ;
                        }),

                      ]),
                    ]),
                  ) : const SizedBox(),
                ]),
              ),
            ),
          ) : const Center(child: Text('Not Login')),
        ),
      );
    }
    );
  }
}
