import 'dart:convert' show utf8;
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:intl/intl.dart';
import 'package:isar/isar.dart';
import 'package:kumi_popup_window/kumi_popup_window.dart';
import 'package:stadtbote/content_views/utils/content_view_widget.dart';
import 'package:stadtbote/content_views/utils/header_info.dart';
import 'package:stadtbote/model/job.dart';
import 'package:stadtbote/model/job_tour.dart';
import 'package:stadtbote/popups/tasks_popups/arrived_popup.dart';
import 'package:stadtbote/popups/tasks_popups/commision_number_popup.dart';
import 'package:stadtbote/popups/tasks_popups/pickup_delivery_status_popup.dart';
import 'package:stadtbote/popups/tasks_popups/receipt_giver_popup.dart';
import 'package:stadtbote/popups/tasks_popups/scan_barcodes_popup.dart';
import 'package:stadtbote/popups/tasks_popups/signature_popup.dart';
import 'package:stadtbote/popups/tasks_popups/station_notice_popup.dart';
import 'package:stadtbote/popups/tasks_popups/take_photos_popup.dart';
import 'package:stadtbote/protocoll_messages/accept_job_message.dart';
import 'package:stadtbote/protocoll_messages/fin_task_message.dart';
import 'package:stadtbote/protocoll_messages/fin_tour_message.dart';
import 'package:stadtbote/protocoll_messages/track_station_message.dart';
import 'package:stadtbote/tools/constants.dart';
import 'package:stadtbote/tools/mqtt_core.dart';

import '../main.dart';
import '../model/task_info.dart';
import '../tools/util.dart';

class TaskListPage extends ContentViewWidget {
  const TaskListPage({super.key, required this.job, required this.tour, this.readOnly = false});

  final Job job;

  final JobTour tour;

  final bool readOnly;

  @override
  State<TaskListPage> createState() => _TaskListPageState();

  @override
  Future<HeaderInfo> getHeaderInfo(BuildContext context) async {
    return HeaderInfo(
        titleWidget: const Text(
          'Liste der Aufgaben',
          style: TextStyle(
            color: Colors.white,
            fontSize: 20.0,
          ),
        ),
        rightButtonEnabled: true,
        rightButtonVisible: true,
        rightButtonImage: Util.fetchFutureIcon(const Icon(Icons.help_outline, size: 20.0, color: Colors.white)),
        rightButtonOnPressed: () async {
          await Util.startBrowser('https://app.assecutor.de/help/sb/app/context/002/index.html');
        });
  }
}

class _TaskListPageState extends State<TaskListPage> {
  late bool _initCompleted = false;

  late List<TaskInfo> _taskList;

  late KumiPopupWindow _popup;

  @override
  void initState() {
    Future.delayed(const Duration(seconds: 0), () async {
      _taskList = await _fetchTaskList();

      _initCompleted = true;

      setState(() {});
    });

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    if (!_initCompleted) {
      return Util.getWaitWidget(context);
    }

   var steps = _initSteps();

    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: SingleChildScrollView(
        scrollDirection: Axis.vertical,
        padding: const EdgeInsets.all(0),
        child: AbsorbPointer(
          absorbing: widget.readOnly,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: steps,
          ),
        ),
      ),
    );
  }

  List<Widget> _initSteps() {
    List<Widget> steps = [];
    for (int i=0; i<_taskList.length; i++) {
      var taskInfo = _taskList[i];

      var textColor = isTaskActive(i) ? Colors.black : const Color(0x33000000);

      steps.add(
        ListTile(
          minVerticalPadding: 0,
          title: Container(
            padding: const EdgeInsets.all(0),
            height: 60,
            child: Row(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.stretch,
              children: <Widget>[
                Stack(
                  children: [
                    Positioned(
                      left: 16.5,
                      top: i == 0 ? 40 : 40,
                      child: Container(
                          height: i == widget.tour.tasks.length - 1 ? 0 : 20,
                          width: 6,
                          color: isTaskActive(i) ? Constants.colorPrimary : Constants.colorPrimaryOpaque,
                      ),
                    ),
                    Column(
                      children: [
                        Container(
                          width: 40,
                          height: 40,
                          decoration: BoxDecoration(
                            shape: BoxShape.circle,
                            color: isTaskActive(i) ? Constants.colorPrimary : Constants.colorPrimaryOpaque,
                          ),
                          child: const Icon(Icons.check, size: 30.0, color: Colors.white),
                        ),
                      ],
                    ),
                  ],
                ),
                const SizedBox(width: 20),
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  mainAxisAlignment: MainAxisAlignment.start,
                  children: [
                    Text(
                      taskInfo.task.topic,
                      textAlign: TextAlign.left,
                      style: TextStyle(
                        color: textColor,
                        fontSize: 15.0,
                      ),
                    ),
                    const SizedBox(height: 5),
                    Text(
                      taskInfo.additionalText ?? '',
                      textAlign: TextAlign.left,
                      style: TextStyle(
                        color: textColor,
                        fontSize: 12.0,
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ),
          onTap: () {
            if (isTaskActive(i)) {
              _processTask(taskInfo);
            }
          },
        ),
      );
    }

    return steps;
  }

  Future<List<TaskInfo>> _fetchTaskList() async {
    List<TaskInfo> taskList = [];

    for(var task in widget.tour.tasks) {
      var taskInfo = await MyApp.isarInstance.taskInfos.filter().sIdEqualTo(task.sId).findFirst();
      if (taskInfo == null) {
        taskInfo = TaskInfo();
        taskInfo.answer = null;
        taskInfo.additionalText = null;
        taskInfo.completed = task.opt != null ? task.opt! : false;
      }

      taskInfo.task = task;
      taskList.add(taskInfo);
    }

    return taskList;
  }

  void _processTask(TaskInfo taskInfo) {
    switch(taskInfo.task.type) {
      case 2:
        _processSignature(taskInfo);
        break;

      case 3:
        _processTaskArrivedOrFinished(taskInfo);
        break;

      case 4:
        _processTakePhotos(taskInfo);
        break;

      case 5:
        _processScanBarcodes(taskInfo);
        break;

      case 7:
        _processReceiptGiver(taskInfo);
        break;

      case 8:
        _processStationNotice(taskInfo);
        break;

      case 9:
        _processCommissionNumber(taskInfo);
        break;

      case 11:
        _processPickupDeliveryStatusTask(taskInfo);
        break;
    }
  }

  _processTaskArrivedOrFinished(TaskInfo taskInfo) {
    _popup = showTaskArrivedPopup(context, taskInfo, () => {
      _finishProcessTaskArrivedOrFinished(taskInfo)
    });
  }

  _finishProcessTaskArrivedOrFinished(TaskInfo taskInfo) {
    _popup.dismiss(context);

    DateFormat dateFormat = DateFormat("dd.MM.yyyy HH:mm");

    taskInfo.additionalText = dateFormat.format(DateTime.now());
    taskInfo.completed = true;

    _sendArrivedMessage(taskInfo);

    setState(() {});
  }

  _processCommissionNumber(TaskInfo taskInfo) {
    _popup = showComissionNumberPopup(context, taskInfo, (text) => {
      _finishProcessCommissionNumber(taskInfo, text)
    });
  }

  _finishProcessCommissionNumber(TaskInfo taskInfo, String comissionNumber) {
    _popup.dismiss(context);

    taskInfo.additionalText = comissionNumber;
    taskInfo.completed = true;

    setState(() {});
  }

  _processScanBarcodes(TaskInfo taskInfo) {
    _popup = showScanBarcodesPopup(context, taskInfo, (List<String> barcodes) => {
      _finishProcessScanBarcodes(taskInfo, barcodes)
    });
  }

  _finishProcessScanBarcodes(TaskInfo taskInfo, List<String> barcodess) {
    _popup.dismiss(context);

    taskInfo.additionalText = "Barcodes gescannt";
    taskInfo.completed = true;

    setState(() {});
  }

  _processTakePhotos(TaskInfo taskInfo) {
    _popup = showTakePhotosPopup(context, taskInfo, () => {
      _finishProcessTakePhotos(taskInfo)
    });
  }

  _finishProcessTakePhotos(TaskInfo taskInfo) {
    _popup.dismiss(context);

    taskInfo.additionalText = "Fotos aufgenommen";
    taskInfo.completed = true;

    setState(() {});
  }

  void _processStationNotice(TaskInfo taskInfo) {
    _popup = showStationNoticePopup(context, taskInfo, (notice) => {
      _finishProcessStationNotice(taskInfo, notice)
    });
  }

  _finishProcessStationNotice(TaskInfo taskInfo, String notice) {
    _popup.dismiss(context);

    taskInfo.additionalText = notice;
    taskInfo.completed = true;

    setState(() {});
  }

  void _processReceiptGiver(TaskInfo taskInfo) {
    _popup = showReceiptGiverPopup(context, taskInfo, (receiptGiver) => {
      _finishReceiptGiver(taskInfo, receiptGiver)
    });
  }

  _finishReceiptGiver(TaskInfo taskInfo, String receiptGiver) {
    _popup.dismiss(context);

    taskInfo.additionalText = receiptGiver;
    taskInfo.completed = true;

    setState(() {});
  }

  void _processPickupDeliveryStatusTask(TaskInfo taskInfo) {
    Future.delayed(const Duration(seconds: 1), () async {
      _popup = showPickupDeliveryStatusPopup(context, taskInfo, (tourEntry) => {
        _popup.dismiss(context),

        taskInfo.completed = true,
      });
    });
  }

  void _processSignature(TaskInfo taskInfo) {
    SystemChrome.setPreferredOrientations([DeviceOrientation.landscapeLeft]);

    Future.delayed(const Duration(seconds: 1), () async {
      _popup = showSignaturePopup(context, taskInfo, () {
        _popup.dismiss(context);

          taskInfo.completed = true;

          SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);

          _sendFinTourMessage();
      });
    });
  }

  bool isTaskActive(int index) {
    for (int i = 0; i < index; i++) {
      var taskInfo = _taskList[i];

      if (!taskInfo.completed) return false;
    }

    return true;
  }

  _sendArrivedMessage(TaskInfo taskInfo) {
    var finTaskMessage = FinTaskMessage();
    finTaskMessage.finTask = FinTask();
    finTaskMessage.finTask.trId = widget.tour.id;
    finTaskMessage.finTask.task = Task();
    finTaskMessage.finTask.task.sId = taskInfo.task.sId;
    finTaskMessage.finTask.task.time = DateTime.now().toIso8601String();

    var position = MyApp.currentPosition;
    if (position != null) {
      finTaskMessage.finTask.task.pos = FinTaskPos();
      finTaskMessage.finTask.task.pos!.lat = position.latitude;
      finTaskMessage.finTask.task.pos!.long = position.longitude;
    }

    MqttCore.instance.publishPayloadMessage("job", finTaskMessage.toJson());
  }

  _sendTrackStationMessage(TaskInfo taskInfo)
  {
    var trackStationMessage = TrackStationMessage();
    trackStationMessage.sid = taskInfo.task.sId;
    trackStationMessage.time = DateTime.now().toIso8601String();

    var position = MyApp.currentPosition;
    if (position != null) {
      trackStationMessage.pos = FinTaskPos();
      trackStationMessage.pos!.lat = position.latitude;
      trackStationMessage.pos!.long = position.latitude;
    }

    MqttCore.instance.publishPayloadMessage("", trackStationMessage.toJson());
  }

  /*
		"fin_tour": {
			"tr_id": 211,
			"com": "changed com#",
			"track": {
				"time": "2021-02-18T12:35:51Z",
				"pos":
				{
					"lat": 53.595121,
					"long": 9.907433,
					"acc": 35
				}
			},
			"tasks": [
				{
					"s_id": 1,
					"time": "2021-02-18T12:32:10Z",
					"pos":
					{
						"lat": 53.595124,
						"long": 9.907435
					}
				},
		}
	}
}
   */
  _sendFinTourMessage() async {
    var finTourMessage = FinTourMessage();
    finTourMessage.finTour = FinTour();
    finTourMessage.finTour.trId = widget.tour.id;
    finTourMessage.finTour.com = "Mir doch egal!";

    var position = MyApp.currentPosition;
    if (position != null) {
      finTourMessage.finTour.track = Track();
      finTourMessage.finTour.track.time = DateTime.now().toIso8601String();
      finTourMessage.finTour.track.pos = FinTaskPos();
      finTourMessage.finTour.track.pos.lat = position.latitude;
      finTourMessage.finTour.track.pos.long = position.longitude;
    }

    finTourMessage.finTour.tasks = [];
    for(var taskInfo in _taskList) {
      var finTourTask = FinTourTask();
      finTourTask.sId = taskInfo.task.sId;
      finTourTask.time = DateTime.now().toIso8601String();
      finTourTask.pos = FinTaskPos();
      finTourTask.pos.lat = 0;
      finTourTask.pos.long = 0;

      finTourMessage.finTour.tasks.add(finTourTask);
    }

    MqttCore.instance.publishPayloadMessage("fin_tour", finTourMessage.toJson());

    widget.tour.state = 9;
    await MyApp.isarInstance.writeTxn(() async {
      await MyApp.isarInstance.jobs.put(widget.job);
    });

    Navigator.of(context).popUntil((route) => route.isFirst);
  }
}